{"pageNumber":"844","pageRowStart":"21075","pageSize":"25","recordCount":46733,"records":[{"id":81293,"text":"pp17031 - 2007 - Thermal Methods for Investigating Ground-Water Recharge","interactions":[],"lastModifiedDate":"2012-02-10T00:11:42","indexId":"pp17031","displayToPublicDate":"2008-05-20T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1703-1","title":"Thermal Methods for Investigating Ground-Water Recharge","docAbstract":"Recharge of aquifers within arid and semiarid environments is defined as the downward flux of water across the regional water table. The introduction of recharging water at the land surface can occur at discreet locations, such as in stream channels, or be distributed over the landscape, such as across broad interarroyo areas within an alluvial ground-water basin. The occurrence of recharge at discreet locations is referred to as focused recharge, whereas the occurrence of recharge over broad regions is referred to as diffuse recharge. The primary interest of this appendix is focused recharge, but regardless of the type of recharge, estimation of downward fluxes is essential to its quantification. \r\n\r\nLike chemical tracers, heat can come from natural sources or be intentionally introduced to infer transport properties and aquifer recharge. The admission and redistribution of heat from natural processes such as insolation, infiltration, and geothermal activity can be used to quantify subsurface flow regimes. Heat is well suited as a ground-water tracer because it provides a naturally present dynamic signal and is relatively harmless over a useful range of induced perturbations. Thermal methods have proven valuable for recharge investigations for several reasons. First, theoretical descriptions of coupled water-and-heat transport are available for the hydrologic processes most often encountered in practice. These include land-surface mechanisms such as radiant heating from the sun, radiant cooling into space, and evapotranspiration, in addition to the advective and conductive mechanisms that usually dominate at depth. Second, temperature is theoretically well defined and readily measured. Third, thermal methods for depths ranging from the land surface to depths of hundreds of meters are based on similar physical principles. Fourth, numerical codes for simulating heat and water transport have become increasingly reliable and widely available. \r\n\r\nDirect measurement of water flux in the subsurface is difficult, prompting investigators to pursue indirect methods. Geophysical approaches that exploit the coupled relation between heat and water transport provide an attractive class of methods that have become widely used in investigations of recharge. This appendix reviews the application of heat to the problem of recharge estimation. Its objective is to provide a fairly complete account of the theoretical underpinnings together with a comprehensive review of thermal methods in practice. Investigators began using subsurface temperatures to delineate recharge areas and infer directions of ground-water flow around the turn of the 20th century. During the 1960s, analytical and numerical solutions for simplified heat- and fluid-flow problems became available. These early solutions, though one-dimensional and otherwise restricted, provided a strong impetus for applying thermal methods to problems of liquid and vapor movement in systems ranging from soils to geothermal reservoirs. Today?s combination of fast processors, massive data-storage units, and efficient matrix techniques provide numerical solutions to complex, three-dimensional transport problems. These approaches allow researchers to take advantage of the considerable information content routinely achievable in high-accuracy temperature work.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Ground-Water Recharge in the Arid and Semiarid Southwestern United States","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/pp17031","usgsCitation":"Blasch, K.W., Constantz, J., and Stonestrom, D.A., 2007, Thermal Methods for Investigating Ground-Water Recharge (Version 1.0): U.S. Geological Survey Professional Paper 1703-1, Appendix 1: p. 351-373, https://doi.org/10.3133/pp17031.","productDescription":"Appendix 1: p. 351-373","onlineOnly":"Y","costCenters":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"links":[{"id":190636,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11334,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/pp1703/app1/","linkFileType":{"id":5,"text":"html"}}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124,25 ], [ -124,49 ], [ -93,49 ], [ -93,25 ], [ -124,25 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a57e4b07f02db62de5a","contributors":{"authors":[{"text":"Blasch, Kyle W. 0000-0002-0590-0724 kblasch@usgs.gov","orcid":"https://orcid.org/0000-0002-0590-0724","contributorId":1631,"corporation":false,"usgs":true,"family":"Blasch","given":"Kyle","email":"kblasch@usgs.gov","middleInitial":"W.","affiliations":[{"id":5050,"text":"WY-MT Water Science Center","active":true,"usgs":true}],"preferred":true,"id":295098,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Constantz, Jim","contributorId":66338,"corporation":false,"usgs":true,"family":"Constantz","given":"Jim","affiliations":[],"preferred":false,"id":295100,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stonestrom, David A. 0000-0001-7883-3385 dastones@usgs.gov","orcid":"https://orcid.org/0000-0001-7883-3385","contributorId":2280,"corporation":false,"usgs":true,"family":"Stonestrom","given":"David","email":"dastones@usgs.gov","middleInitial":"A.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":295099,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":81289,"text":"pp1703H - 2007 - Estimated infiltration, percolation, and recharge rates at the Rillito Creek focused recharge investigation site, Pima County, Arizona","interactions":[{"subject":{"id":81289,"text":"pp1703H - 2007 - Estimated infiltration, percolation, and recharge rates at the Rillito Creek focused recharge investigation site, Pima County, Arizona","indexId":"pp1703H","publicationYear":"2007","noYear":false,"chapter":"H","title":"Estimated infiltration, percolation, and recharge rates at the Rillito Creek focused recharge investigation site, Pima County, Arizona"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":1}],"isPartOf":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"lastModifiedDate":"2022-02-16T20:28:40.10625","indexId":"pp1703H","displayToPublicDate":"2008-05-20T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1703","chapter":"H","title":"Estimated infiltration, percolation, and recharge rates at the Rillito Creek focused recharge investigation site, Pima County, Arizona","docAbstract":"

A large fraction of ground water stored in the alluvial aquifers in the Southwest is recharged by water that percolates through ephemeral stream-channel deposits. The amount of water currently recharging many of these aquifers is insufficient to meet current and future demands. Improving the understanding of streambed infiltration and the subsequent redistribution of water within the unsaturated zone is fundamental to quantifying and forming an accurate description of streambed recharge. In addition, improved estimates of recharge from ephemeral-stream channels will reduce uncertainties in water-budget components used in current ground-water models.

This chapter presents a summary of findings related to a focused recharge investigation along Rillito Creek in Tucson, Arizona. A variety of approaches used to estimate infiltration, percolation, and recharge fluxes are presented that provide a wide range of temporal- and spatial-scale measurements of recharge beneath Rillito Creek. The approaches discussed include analyses of (1) cores and cuttings for hydraulic and textural properties, (2) environmental tracers from the water extracted from the cores and cuttings, (3) seepage measurements made during sustained streamflow, (4) heat as a tracer and numerical simulations of the movement of heat through the streambed sediments, (5) water-content variations, (6) water-level responses to streamflow in piezometers within the stream channel, and (7) gravity changes in response to recharge events. Hydraulic properties of the materials underlying Rillito Creek were used to estimate long-term potential recharge rates. Seepage measurements and analyses of temperature and water content were used to estimate infiltration rates, and environmental tracers were used to estimate percolation rates through the thick unsaturated zone. The presence or lack of tritium in the water was used to determine whether or not water in the unsaturated zone infiltrated within the past 40 years. Analysis of water-level and temporal-gravity data were used to estimate recharge volumes. Data presented in this chapter were collected from 1999 though 2002. Precipitation and streamflow during this period were less than the long-term average; however, two periods of significant streamflow resulted in recharge—one in the summer of 1999 and the other in the fall/winter of 2000.

Flux estimates of infiltration and recharge vary from less than 0.1 to 1.0 cubic meter per second per kilometer of streamflow. Recharge-flux estimates are larger than infiltration estimates. Larger recharge fluxes than infiltration fluxes are explained by the scale of measurements. Methods used to estimate recharge rates incorporate the largest volumetric and temporal scales and are likely to have fluxes from other nearby sources, such as unmeasured tributaries, whereas the methods used to estimate infiltration incorporate the smallest scales, reflecting infiltration rates at individual measurement sites.

","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Ground-water recharge in the arid and semiarid southwestern United States (Professional Paper 1703)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1703H","usgsCitation":"Hoffmann, J.P., Blasch, K.W., Pool, D.R., Bailey, M.A., and Callegary, J.B., 2007, Estimated infiltration, percolation, and recharge rates at the Rillito Creek focused recharge investigation site, Pima County, Arizona (Version 1.0; March 20, 2008): U.S. Geological Survey Professional Paper 1703, 36 p., https://doi.org/10.3133/pp1703H.","productDescription":"36 p.","startPage":"185","endPage":"220","onlineOnly":"Y","costCenters":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"links":[{"id":195279,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":396032,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_83591.htm"},{"id":11330,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/pp1703/h/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Arizona","county":"Pima County","city":"Tucson","otherGeospatial":"Rillito Creek","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -111.1431884765625,\n 32.12329032304639\n ],\n [\n -110.61447143554688,\n 32.12329032304639\n ],\n [\n -110.61447143554688,\n 32.41938487611333\n ],\n [\n -111.1431884765625,\n 32.41938487611333\n ],\n [\n -111.1431884765625,\n 32.12329032304639\n ]\n ]\n ]\n }\n }\n ]\n}","edition":"Version 1.0; 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Ground-water recharge in the arid and semiarid southwestern United States results from the complex interplay of climate, geology, and vegetation across widely ranging spatial and temporal scales. Present-day recharge tends to be narrowly focused in time and space. Widespread water-table declines accompanied agricultural development during the twentieth century, demonstrating that sustainable ground-water supplies are not guaranteed when part of the extracted resource represents paleorecharge. Climatic controls on ground-water recharge range from seasonal cycles of summer monsoonal and winter frontal storms to multimillennial cycles of glacial and interglacial periods. Precipitation patterns reflect global-scale interactions among the oceans, atmosphere, and continents. Large-scale climatic influences associated with El Niño and Pacific Decadal Oscillations strongly but irregularly control weather in the study area, so that year-to-year variations in precipitation and ground-water recharge are large and difficult to predict. Proxy data indicate geologically recent periods of multidecadal droughts unlike any in the modern instrumental record. Anthropogenically induced climate change likely will reduce ground-water recharge through diminished snowpack at higher elevations, and perhaps through increased drought. Future changes in El Niño and monsoonal patterns, both crucial to precipitation in the study area, are highly uncertain in current models. Land-use modifications influence ground-water recharge directly through vegetation, irrigation, and impermeable area, and indirectly through climate change. High ranges bounding the study area—the San Bernadino Mountains and Sierra Nevada to the west, and the Wasatch and southern Colorado Rocky Mountains to the east—provide external geologic controls on ground-water recharge. Internal geologic controls stem from tectonic processes that led to numerous, variably connected alluvial-filled basins, exposure of extensive Paleozoic aquifers in mountainous recharge areas, and distinct modes of recharge in the Colorado Plateau and Basin and Range subregions.

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Multiyear studies were done to examine meteorologic and hydrogeologic controls on ephemeral streamflow and focused ground-water recharge at eight sites across the arid and semiarid southwestern United States. Campaigns of intensive data collection were conducted in the Great Basin, Mojave Desert, Sonoran Desert, Rio Grande Rift, and Colorado Plateau physiographic areas. During the study period (1997 to 2002), the southwestern region went from wetter than normal conditions associated with a strong El Niño climatic pattern (1997–1998) to drier than normal conditions associated with a La Niña climatic pattern marked by unprecedented warmth in the western tropical Pacific and Indian Oceans (1998–2002). The strong El Niño conditions roughly doubled precipitation at the Great Basin, Mojave Desert, and Colorado Plateau study sites. Precipitation at all sites trended generally lower, producing moderate- to severe-drought conditions by the end of the study. Streamflow in regional rivers indicated diminishing ground-water recharge conditions, with annual-flow volumes declining to 10–46 percent of their respective long-term averages by 2002. Local streamflows showed higher variability, reflecting smaller scales of integration (in time and space) of the study-site watersheds. By the end of the study, extended periods (9–15 months) of zero or negligible flow were observed at half the sites. Summer monsoonal rains generated the majority of streamflow and associated recharge in the Sonoran Desert sites and the more southerly Rio Grande Rift site, whereas winter storms and spring snowmelt dominated the northern and westernmost sites. Proximity to moisture sources (primarily the Pacific Ocean and Gulf of California) and meteorologic fluctuations, in concert with orography, largely control the generation of focused ground-water recharge from ephemeral streamflow, although other factors (geology, soil, and vegetation) also are important. Watershed area correlated weakly with focused infiltration volumes, the latter providing an upper bound on associated ground-water recharge. Estimates of annual focused infiltration for the research sites ranged from about 105 to 107 cubic meters from contributing areas that ranged from 26 to 2,260 square kilometers.

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Western Branch","active":true,"usgs":true}],"preferred":true,"id":295064,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":81285,"text":"pp1703D - 2007 - Streamflow, infiltration, and ground-water recharge at Abo Arroyo, New Mexico","interactions":[{"subject":{"id":81285,"text":"pp1703D - 2007 - Streamflow, infiltration, and ground-water recharge at Abo Arroyo, New Mexico","indexId":"pp1703D","publicationYear":"2007","noYear":false,"chapter":"D","title":"Streamflow, infiltration, and ground-water recharge at Abo Arroyo, New Mexico"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":1}],"isPartOf":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"lastModifiedDate":"2022-06-07T19:05:57.142446","indexId":"pp1703D","displayToPublicDate":"2008-05-20T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1703","chapter":"D","title":"Streamflow, infiltration, and ground-water recharge at Abo Arroyo, New Mexico","docAbstract":"

Abo Arroyo, an ephemeral tributary to the Rio Grande, rises in the largest upland catchment on the eastern side of the Middle Rio Grande Basin (MRGB). The 30-kilometer reach of channel between the mountain front and its confluence with the Rio Grande is incised into basin-fill sediments and separated from the regional water table by an unsaturated zone that reaches 120 meters thick. The MRGB portion of the arroyo is dry except for brief flows generated by runoff from the upland catchment. Though brief, ephemeral flows provide a substantial fraction of ground-water recharge in the southeastern portion of the MRGB. Previous estimates of average annual recharge from Abo Arroyo range from 1.3 to 21 million cubic meters. The current study examined the timing, location, and amount of channel infiltration using streamflow data and environmental tracers during a four-year period (water years 1997–2000). A streamflow-gaging station (“gage”) was installed in a bedrock-controlled reach near the catchment outlet to provide high-frequency data on runoff entering the basin. Streamflow at the gage, an approximate bound on potential tributary recharge to the basin, ranged from 0.8 to 15 million cubic meters per year. Storm-generated runoff produced about 98 percent of the flow in the wettest year and 80 percent of the flow in the driest year. Nearly all flows that enter the MRGB arise from monsoonal storms in July through October. A newly developed streambed temperature method indicated the presence and duration of ephemeral flows downstream of the gage. During the monsoon season, abrupt downward shifts in streambed temperatures and suppressed diurnal ranges provided generally clear indications of flow. Streambed temperatures during winter showed that snowmelt is also effective in generating channel infiltration. Controlled infiltration experiments in dry arroyo sediments indicated that most ephemeral flow is lost to seepage before reaching the Rio Grande. Streambed temperature records confirmed this, providing evidence of only two flows reaching the Rio Grande during a three-year period (water years 1998–2000). Sub-channel chloride concentrations indicate that approximately half of the seepage loss eventually becomes ground-water recharge. Vertical profiles of pore-water chloride in transects adjacent to the channel indicate that basin-floor recharge outside the arroyo is negligible under current climatic conditions.

","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Ground-water recharge in the arid and semiarid southwestern United States (Professional Paper 1703)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1703D","usgsCitation":"Stewart-Deaker, A.E., Stonestrom, D.A., and Moore, S.J., 2007, Streamflow, infiltration, and ground-water recharge at Abo Arroyo, New Mexico (Version 1.0): U.S. Geological Survey Professional Paper 1703, 23 p., https://doi.org/10.3133/pp1703D.","productDescription":"23 p.","startPage":"83","endPage":"105","onlineOnly":"Y","costCenters":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"links":[{"id":195061,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11326,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/pp1703/d/","linkFileType":{"id":5,"text":"html"}},{"id":401878,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_83587.htm"}],"country":"United States","state":"New Mexico","otherGeospatial":"Abo Arroyo","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -106.9,\n 34.8\n ],\n [\n -106.2,\n 34.8\n ],\n [\n -106.2,\n 34.2\n ],\n [\n -106.9,\n 34.2\n ],\n [\n -106.9,\n 34.8\n ]\n ]\n ]\n }\n }\n ]\n}","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b15e4b07f02db6a4d12","contributors":{"editors":[{"text":"Stonestrom, David A. 0000-0001-7883-3385 dastones@usgs.gov","orcid":"https://orcid.org/0000-0001-7883-3385","contributorId":2280,"corporation":false,"usgs":true,"family":"Stonestrom","given":"David","email":"dastones@usgs.gov","middleInitial":"A.","affiliations":[{"id":438,"text":"National Research Program - 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2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"lastModifiedDate":"2022-06-07T20:09:34.772586","indexId":"pp1703B","displayToPublicDate":"2008-05-20T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1703","chapter":"B","title":"Regional analysis of ground-water recharge","docAbstract":"

A modeling analysis of runoff and ground-water recharge for the arid and semiarid southwestern United States was performed to investigate the interactions of climate and other controlling factors and to place the eight study-site investigations into a regional context. A distributed-parameter water-balance model (the Basin Characterization Model, or BCM) was used in the analysis. Data requirements of the BCM included digital representations of topography, soils, geology, and vegetation, together with monthly time-series of precipitation and air-temperature data. Time-series of potential evapotranspiration were generated by using a submodel for solar radiation, taking into account topographic shading, cloudiness, and vegetation density. Snowpack accumulation and melting were modeled using precipitation and air-temperature data. Amounts of water available for runoff and ground-water recharge were calculated on the basis of water-budget considerations by using measured- and generated-meteorologic time series together with estimates of soil-water storage and saturated hydraulic conductivity of subsoil geologic units. Calculations were made on a computational grid with a horizontal resolution of about 270 meters for the entire 1,033,840 square-kilometer study area. The modeling analysis was composed of 194 basins, including the eight basins containing ground-water recharge-site investigations. For each grid cell, the BCM computed monthly values of potential evapotranspiration, soil-water storage, in-place ground-water recharge, and runoff (potential stream flow). A fixed percentage of runoff was assumed to become recharge beneath channels operating at a finer resolution than the computational grid of the BCM. Monthly precipitation and temperature data from 1941 to 2004 were used to explore climatic variability in runoff and ground-water recharge.

The selected approach provided a framework for classifying study-site basins with respect to climate and dominant recharge processes. The average climate for all 194 basins ranged from hyperarid to humid, with arid and semiarid basins predominating (fig. 6, chapter A, this volume). Four of the 194 basins had an aridity index of dry subhumid; two of the basins were humid. Of the eight recharge-study sites, six were in semiarid basins, and two were in arid basins. Average-annual potential evapotranspiration showed a regional gradient from less than 1 m/yr in the northeastern part of the study area to more than 2 m/yr in the southwestern part of the study area. Average-annual precipitation was lowest in the two arid-site basins and highest in the two study-site basins in southern Arizona. The relative amount of runoff to in-place recharge varied throughout the study area, reflecting differences primarily in soil water-holding capacity, saturated hydraulic conductivity of subsoil materials, and snowpack dynamics. Climatic forcing expressed in El Niño and Pacific Decadal Oscillation indices strongly influenced the generation of precipitation throughout the study area. Positive values of both indices correlated with the highest amounts of runoff and ground-water recharge.

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Model calibration provides initial estimates of ground-water recharge. Calibrated models are important yet crude tools for addressing questions about the spatial and temporal distribution of recharge. An inverse approach to recharge estimation is taken of necessity, due to inherent difficulties in making direct measurements of flow across the water table. Difficulties arise because recharging fluxes are typically small, even in humid regions, and because the location of the water table changes with time. Deep water tables in arid and semiarid regions make recharge monitoring especially difficult. Nevertheless, recharge monitoring must advance in order to improve assessments of ground-water recharge. Improved characterization of basin-scale recharge is critical for informed water-resources management. \r\n\r\nDifficulties in directly measuring recharge have prompted many efforts to develop indirect methods. The mass-balance approach of estimating recharge as the residual of generally much larger terms has persisted despite the use of increasing complex and finely gridded large-scale hydrologic models. Geophysical data pertaining to recharge rates, timing, and patterns have the potential to substantially improve modeling efforts by providing information on boundary conditions, by constraining model inputs, by testing simplifying assumptions, and by identifying the spatial and temporal resolutions needed to predict recharge to a specified tolerance in space and in time. Moreover, under certain conditions, geophysical measurements can yield direct estimates of recharge rates or changes in water storage, largely eliminating the need for indirect measures of recharge. \r\n\r\nThis appendix presents an overview of physically based, geophysical methods that are currently available or under development for recharge monitoring. The material is written primarily for hydrogeologists. Uses of geophysical methods for improving recharge monitoring are explored through brief discussions and case studies. The intent is to indicate how geophysical methods can be used effectively in studying recharge processes and quantifying recharge. As such, the material constructs a framework for matching the strengths of individual geophysical methods with the manners in which they can be applied for hydrologic analyses. \r\n\r\nThe appendix is organized in three sections. First, the key hydrologic parameters necessary to determine the rate, timing, and patterns of recharge are identified. Second, the basic operating principals of the relevant geophysical methods are discussed. Methods are grouped by the physical property that they measure directly. Each measured property is related to one or more of the key hydrologic properties for recharge monitoring. Third, the emerging conceptual framework for applying geophysics to recharge monitoring is presented. Examples of the application of selected geophysical methods to recharge monitoring are presented in nine case studies. These studies illustrate hydrogeophysical applications under a wide range of conditions and measurement scales, which vary from tenths of a meter to hundreds of meters. The case studies include practice-proven as well as emerging applications of geophysical methods to recharge monitoring.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Ground-Water Recharge in the Arid and Semiarid Southwestern United States","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/pp17032","usgsCitation":"Ferre, T.P., Binley, A.M., Blasch, K.W., Callegary, J.B., Crawford, S.M., Fink, J.B., Flint, A.L., Flint, L.E., Hoffmann, J.P., Izbicki, J., Levitt, M.T., Pool, D.R., and Scanlon, B., 2007, Geophysical Methods for Investigating Ground-Water Recharge (Version 1.0): U.S. Geological Survey Professional Paper 1703-2, Appendix 2: p. 375-412, https://doi.org/10.3133/pp17032.","productDescription":"Appendix 2: p. 375-412","onlineOnly":"Y","costCenters":[{"id":128,"text":"Arizona Water Science 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Center","active":true,"usgs":true}],"preferred":true,"id":295107,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Crawford, Steven M.","contributorId":80714,"corporation":false,"usgs":true,"family":"Crawford","given":"Steven","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":295111,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Fink, James B.","contributorId":11658,"corporation":false,"usgs":true,"family":"Fink","given":"James","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":295108,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Flint, Alan L. 0000-0002-5118-751X aflint@usgs.gov","orcid":"https://orcid.org/0000-0002-5118-751X","contributorId":1492,"corporation":false,"usgs":true,"family":"Flint","given":"Alan","email":"aflint@usgs.gov","middleInitial":"L.","affiliations":[{"id":657,"text":"Western Geographic Science Center","active":true,"usgs":true},{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":295105,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Flint, Lorraine E. 0000-0002-7868-441X lflint@usgs.gov","orcid":"https://orcid.org/0000-0002-7868-441X","contributorId":1184,"corporation":false,"usgs":true,"family":"Flint","given":"Lorraine","email":"lflint@usgs.gov","middleInitial":"E.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":295102,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Hoffmann, John P. jphoffma@usgs.gov","contributorId":1337,"corporation":false,"usgs":true,"family":"Hoffmann","given":"John","email":"jphoffma@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":295103,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Izbicki, John A. 0000-0003-0816-4408 jaizbick@usgs.gov","orcid":"https://orcid.org/0000-0003-0816-4408","contributorId":1375,"corporation":false,"usgs":true,"family":"Izbicki","given":"John A.","email":"jaizbick@usgs.gov","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":295104,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Levitt, Marc T.","contributorId":70874,"corporation":false,"usgs":true,"family":"Levitt","given":"Marc","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":295109,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Pool, Donald R. drpool@usgs.gov","contributorId":1121,"corporation":false,"usgs":true,"family":"Pool","given":"Donald","email":"drpool@usgs.gov","middleInitial":"R.","affiliations":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"preferred":true,"id":295101,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Scanlon, Bridget R.","contributorId":74093,"corporation":false,"usgs":true,"family":"Scanlon","given":"Bridget R.","affiliations":[],"preferred":false,"id":295110,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}} ,{"id":81288,"text":"pp1703G - 2007 - Ground-water recharge from small intermittent streams in the western Mojave Desert, California","interactions":[{"subject":{"id":81288,"text":"pp1703G - 2007 - Ground-water recharge from small intermittent streams in the western Mojave Desert, California","indexId":"pp1703G","publicationYear":"2007","noYear":false,"chapter":"G","title":"Ground-water recharge from small intermittent streams in the western Mojave Desert, California"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":1}],"isPartOf":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"lastModifiedDate":"2022-02-18T21:29:56.312483","indexId":"pp1703G","displayToPublicDate":"2008-05-20T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1703","chapter":"G","title":"Ground-water recharge from small intermittent streams in the western Mojave Desert, California","docAbstract":"

Population growth has impacted ground-water resources in the western Mojave Desert, where declining water levels suggest that recharge rates have not kept pace with withdrawals. Recharge from the Mojave River, the largest hydrographic feature in the study area, is relatively well characterized. In contrast, recharge from numerous smaller streams that convey runoff from the bounding mountains is poorly characterized. The current study examined four representative streams to assess recharge from these intermittent sources. Hydraulic, thermal, geomorphic, chemical, and isotopic data were used to study recharge processes, from streamflow generation and infiltration to percolation through the unsaturated zone. Ground-water movement away from recharge areas was also assessed.

Infiltration in amounts sufficient to have a measurable effect on subsurface temperature profiles did not occur in every year in instrumented study reaches. In addition to streamflow availability, results showed the importance of sediment texture in controlling infiltration and eventual recharge. Infiltration amounts of about 0.7 meters per year were an approximate threshold for the occurrence of ground-water recharge. Estimated travel times through the thick unsaturated zones underlying channels reached several hundred years. Recharging fluxes were influenced by stratigraphic complexity and depositional dynamics. Because of channel meandering, not all water that penetrates beneath the root zone can be assumed to become recharge on active alluvial fans.

Away from study washes, elevated chloride concentrations and highly negative water potentials beneath the root zone indicated negligible recharge from direct infiltration of precipitation under current climatic conditions. In upstream portions of washes, generally low subsurface chloride concentrations and near-zero water potentials indicated downward movement of water toward the water table, driven primarily by gravity. Recharging conditions did not extend to the distal ends of all washes. Where urbanization had concentrated spatially distributed runoff into a small number of fixed channels, enhanced infiltration induced recharging conditions, mobilizing accumulated chloride.

Estimated amounts of ground-water recharge from the studied reaches were small. Extrapolating on the basis of drainage areas, the estimated aggregate recharge from small intermittent streams is minor compared to recharge from the Mojave River. Recharge is largely controlled by streamflow availability, which primarily reflects precipitation patterns. Precipitation in the Mojave Desert is strongly controlled by topography. Cool moist air masses from the Pacific Ocean are mostly blocked from entering the desert by the high mountains bordering its southern edge. Storms do, however, readily enter the region through Cajon Pass. These storms generate flow in the Mojave River that often reaches Afton Canyon, more than 150 kilometers downstream. The isotopic composition of ground water reflects the localization of recharge beneath the Mojave River. Similar processes occur near San Gorgonio Pass, 75 kilometers southeast from Cajon Pass along the bounding San Andreas Fault.

","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Ground-water recharge in the arid and semiarid southwestern United States (Professional Paper 1703)","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1703G","usgsCitation":"Izbicki, J., Johnson, R.U., Kulongoski, J., and Predmore, S., 2007, Ground-water recharge from small intermittent streams in the western Mojave Desert, California (Version 1.0; March 20, 2008): U.S. Geological Survey Professional Paper 1703, 28 p., https://doi.org/10.3133/pp1703G.","productDescription":"28 p.","startPage":"157","endPage":"184","onlineOnly":"Y","costCenters":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true},{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":396203,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_83590.htm"},{"id":195304,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11329,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/pp1703/g/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"California","otherGeospatial":"Mojave Desert","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -116,\n 34.75\n ],\n [\n -118,\n 34.75\n ],\n [\n -118,\n 34\n ],\n [\n -116,\n 34\n ],\n [\n -116,\n 34.75\n ]\n ]\n ]\n }\n }\n ]\n}","edition":"Version 1.0; March 20, 2008","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab0e4b07f02db66d51c","contributors":{"editors":[{"text":"Stonestrom, David A. 0000-0001-7883-3385 dastones@usgs.gov","orcid":"https://orcid.org/0000-0001-7883-3385","contributorId":2280,"corporation":false,"usgs":true,"family":"Stonestrom","given":"David","email":"dastones@usgs.gov","middleInitial":"A.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":725753,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Constantz, Jim","contributorId":66338,"corporation":false,"usgs":true,"family":"Constantz","given":"Jim","affiliations":[],"preferred":false,"id":725754,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Ferré, Ty P.A.","contributorId":35647,"corporation":false,"usgs":false,"family":"Ferré","given":"Ty P.A.","affiliations":[],"preferred":false,"id":725755,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Leake, Stanley A. 0000-0003-3568-2542 saleake@usgs.gov","orcid":"https://orcid.org/0000-0003-3568-2542","contributorId":1846,"corporation":false,"usgs":true,"family":"Leake","given":"Stanley","email":"saleake@usgs.gov","middleInitial":"A.","affiliations":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"preferred":true,"id":725756,"contributorType":{"id":2,"text":"Editors"},"rank":4}],"authors":[{"text":"Izbicki, John A. 0000-0003-0816-4408 jaizbick@usgs.gov","orcid":"https://orcid.org/0000-0003-0816-4408","contributorId":1375,"corporation":false,"usgs":true,"family":"Izbicki","given":"John A.","email":"jaizbick@usgs.gov","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":295081,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, Russell U.","contributorId":79977,"corporation":false,"usgs":true,"family":"Johnson","given":"Russell","email":"","middleInitial":"U.","affiliations":[],"preferred":false,"id":295082,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kulongoski, Justin T. 0000-0002-3498-4154 kulongos@usgs.gov","orcid":"https://orcid.org/0000-0002-3498-4154","contributorId":919,"corporation":false,"usgs":true,"family":"Kulongoski","given":"Justin T.","email":"kulongos@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":false,"id":295080,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Predmore, Steven","contributorId":105004,"corporation":false,"usgs":true,"family":"Predmore","given":"Steven","affiliations":[],"preferred":false,"id":295083,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":81264,"text":"sir20075279 - 2007 - Effects of Hardened Low-Water Crossings on Periphyton and Water Quality in Selected Streams at the Fort Polk Military Reservation, Louisiana, 1998-99 and 2003-04","interactions":[],"lastModifiedDate":"2012-03-08T17:16:27","indexId":"sir20075279","displayToPublicDate":"2008-05-16T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5279","title":"Effects of Hardened Low-Water Crossings on Periphyton and Water Quality in Selected Streams at the Fort Polk Military Reservation, Louisiana, 1998-99 and 2003-04","docAbstract":"In 2003, the U.S. Geological Survey (USGS), at the request of the U.S. Army Joint Readiness Training Center and Fort Polk, began a follow-up study to determine whether installation and modification of hardened low-water crossings had short-term (less than 1 year) or long-term (greater than 1 year) effects on periphyton or water quality in five streams at the Fort Polk Military Reservation, Louisiana. Periphyton data were statistically analyzed for possible differences between samples collected at upstream and downstream sites and before and after low-water crossings were modified on three streams, Big Brushy Creek, Tributary to East Fork of Sixmile Creek, and Tributary to Birds Creek, during 2003?04. Periphyton data also were analyzed for possible differences between samples collected at upstream and downstream sites on two streams, Tributary to Big Brushy Creek and Little Brushy Creek, during 1998?99 and 2003. Variations in periphyton communities could not be conclusively attributed to the modifications. Most of the significant changes in percent frequency of occurrence and average cell density of the 10 most frequently occurring periphyton taxa were increases at downstream sites after the hardened low-water crossing installations or modifications. However, these changes in the periphyton community are not necessarily deleterious to the community structure.\r\n\r\nWater-quality data collected from upstream and downstream sites on the five streams during 2003?04 were analyzed for possible differences caused by the hardened crossings. Generally, average water-quality values and concentrations were similar at upstream and downstream sites. When average water-quality values or concentrations changed significantly, they almost always changed significantly at both the upstream and downstream sites. It is probable that observed variations in water quality at both upstream and downstream sites are related to differences in rainfall and streamflow during the sample collection periods rather than an effect of the hardened low-water crossing installations or modifications, but additional study is needed.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/sir20075279","collaboration":"Prepared in cooperation with the U.S. Army Joint Readiness Training Center and Fort Polk","usgsCitation":"Bryan, B.W., Bryan, C., Lovelace, J.K., and Tollett, R.W., 2007, Effects of Hardened Low-Water Crossings on Periphyton and Water Quality in Selected Streams at the Fort Polk Military Reservation, Louisiana, 1998-99 and 2003-04 (Version 1.0): U.S. Geological Survey Scientific Investigations Report 2007-5279, vi, 36 p., https://doi.org/10.3133/sir20075279.","productDescription":"vi, 36 p.","costCenters":[{"id":369,"text":"Louisiana Water Science Center","active":true,"usgs":true}],"links":[{"id":194998,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11305,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5279/","linkFileType":{"id":5,"text":"html"}}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -93.58333333333333,30.833333333333332 ], [ -93.58333333333333,31.416666666666668 ], [ -92.75,31.416666666666668 ], [ -92.75,30.833333333333332 ], [ -93.58333333333333,30.833333333333332 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae2e4b07f02db688d02","contributors":{"authors":[{"text":"Bryan, Barbara W.","contributorId":102938,"corporation":false,"usgs":true,"family":"Bryan","given":"Barbara","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":295002,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bryan, C. Frederick","contributorId":106997,"corporation":false,"usgs":true,"family":"Bryan","given":"C. Frederick","affiliations":[],"preferred":false,"id":295003,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lovelace, John K. 0000-0002-8532-2599 jlovelac@usgs.gov","orcid":"https://orcid.org/0000-0002-8532-2599","contributorId":999,"corporation":false,"usgs":true,"family":"Lovelace","given":"John","email":"jlovelac@usgs.gov","middleInitial":"K.","affiliations":[{"id":369,"text":"Louisiana Water Science Center","active":true,"usgs":true},{"id":24708,"text":"Lower Mississippi-Gulf Water Science Center","active":true,"usgs":true}],"preferred":true,"id":295000,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tollett, Roland W. 0000-0002-4726-5845 rtollett@usgs.gov","orcid":"https://orcid.org/0000-0002-4726-5845","contributorId":1896,"corporation":false,"usgs":true,"family":"Tollett","given":"Roland","email":"rtollett@usgs.gov","middleInitial":"W.","affiliations":[{"id":24708,"text":"Lower Mississippi-Gulf Water Science Center","active":true,"usgs":true}],"preferred":true,"id":295001,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":81245,"text":"ofr20071285 - 2007 - Digital mapping techniques '06 - Workshop proceedings","interactions":[{"subject":{"id":70180392,"text":"70180392 - 2007 - USGS national surveys and analysis projects: Preliminary compilation of integrated geological datasets for the United States: A section in Digital mapping techniques '06 - Workshop proceedings","indexId":"70180392","publicationYear":"2007","noYear":false,"title":"USGS national surveys and analysis projects: Preliminary compilation of integrated geological datasets for the United States: A section in Digital mapping techniques '06 - Workshop proceedings"},"predicate":"IS_PART_OF","object":{"id":81245,"text":"ofr20071285 - 2007 - Digital mapping techniques '06 - Workshop proceedings","indexId":"ofr20071285","publicationYear":"2007","noYear":false,"title":"Digital mapping techniques '06 - Workshop proceedings"},"id":1}],"lastModifiedDate":"2019-04-01T08:47:47","indexId":"ofr20071285","displayToPublicDate":"2008-05-15T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1285","title":"Digital mapping techniques '06 - Workshop proceedings","docAbstract":"

The Digital Mapping Techniques '06 (DMT'06) workshop was attended by more than 110 technical experts from 51 agencies, universities, and private companies, including representatives from 27 state geological surveys (see Appendix A of these Proceedings). This workshop was similar in nature to the previous nine meetings, which were held in Lawrence, Kansas (Soller, 1997), Champaign, Illinois (Soller, 1998), Madison, Wisconsin (Soller, 1999), Lexington, Kentucky (Soller, 2000), Tuscaloosa, Alabama (Soller, 2001), Salt Lake City, Utah (Soller, 2002), Millersville, Pennsylvania (Soller, 2003), Portland, Oregon (Soller, 2004), and Baton Rouge, Louisiana (Soller, 2005). This year's meeting was hosted by the Ohio Geological Survey, from June 11-14, 2006, on the Ohio State University campus in Columbus, Ohio. As in the previous meetings, the objective was to foster informal discussion and exchange of technical information. It is with great pleasure that I note that the objective was successfully met, as attendees continued to share and exchange knowledge and information, and renew friendships and collegial work begun at past DMT workshops.

Each DMT workshop has been coordinated by the Association of American State Geologists (AASG) and U.S. Geological Survey (USGS) Data Capture Working Group, the latter of which was formed in August 1996 to support the AASG and the USGS in their effort to build a National Geologic Map Database (see Soller, this volume, and http://ngmdb.usgs.gov/info/standards/datacapt/). The Working Group was formed because increased production efficiencies, standardization, and quality of digital map products were needed for the database - and for the State and Federal geological surveys - to provide more high-quality digital maps to the public.

At the 2006 meeting, oral and poster presentations and special discussion sessions emphasized: 1) methods for creating and publishing map products (here, \"publishing\" includes Web-based release); 2) field data capture software and techniques, including the use of LIDAR; 3) digital cartographic techniques; 4) migration of digital maps into ArcGIS Geodatabase format; 5) analytical GIS techniques; and 6) continued development of the National Geologic Map Database.

","conferenceTitle":"Digital mapping techniques '06","conferenceDate":"June 11-14, 2006","conferenceLocation":"Columbus, OH","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071285","usgsCitation":"2007, Digital mapping techniques '06 - Workshop proceedings: U.S. Geological Survey Open-File Report 2007-1285, vi, 217 p., https://doi.org/10.3133/ofr20071285.","productDescription":"vi, 217 p.","numberOfPages":"223","temporalStart":"2006-06-11","temporalEnd":"2006-06-14","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":190498,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":362514,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1285/pdf/ofr2007-1285hr.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":11288,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1285/contents.html","linkFileType":{"id":5,"text":"html"}}],"publicComments":"Convened by the Association of American State Geologists and the United States Geological Survey; Hosted by the Ohio Geological Survey","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9ae4b07f02db65d58d","contributors":{"editors":[{"text":"Soller, David R. 0000-0001-6177-8332 drsoller@usgs.gov","orcid":"https://orcid.org/0000-0001-6177-8332","contributorId":2700,"corporation":false,"usgs":true,"family":"Soller","given":"David","email":"drsoller@usgs.gov","middleInitial":"R.","affiliations":[{"id":5061,"text":"National Cooperative Geologic Mapping and Landslide Hazards","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":661510,"contributorType":{"id":2,"text":"Editors"},"rank":1}]}} ,{"id":81248,"text":"tm11C2 - 2007 - Geographic Information System Software to Remodel Population Data Using Dasymetric Mapping Methods","interactions":[],"lastModifiedDate":"2012-02-02T00:14:31","indexId":"tm11C2","displayToPublicDate":"2008-05-15T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":335,"text":"Techniques and Methods","code":"TM","onlineIssn":"2328-7055","printIssn":"2328-7047","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"11-C2","title":"Geographic Information System Software to Remodel Population Data Using Dasymetric Mapping Methods","docAbstract":"The U.S. Census Bureau provides decadal demographic data collected at the household level and aggregated to larger enumeration units for anonymity purposes. Although this system is appropriate for the dissemination of large amounts of national demographic data, often the boundaries of the enumeration units do not reflect the distribution of the underlying statistical phenomena. Conventional mapping methods such as choropleth mapping, are primarily employed due to their ease of use. However, the analytical drawbacks of choropleth methods are well known ranging from (1) the artificial transition of population at the boundaries of mapping units to (2) the assumption that the phenomena is evenly distributed across the enumeration unit (when in actuality there can be significant variation). Many methods to map population distribution have been practiced in geographic information systems (GIS) and remote sensing fields. Many cartographers prefer dasymetric mapping to map population because of its ability to more accurately distribute data over geographic space. Similar to ?choropleth maps?, a dasymetric map utilizes standardized data (for example, census data). However, rather than using arbitrary enumeration zones to symbolize population distribution, a dasymetric approach introduces ancillary information to redistribute the standardized data into zones relative to land use and land cover (LULC), taking into consideration actual changing densities within the boundaries of the enumeration unit. Thus, new zones are created that correlate to the function of the map, capturing spatial variations in population density. The transfer of data from census enumeration units to ancillary-driven homogenous zones is performed by a process called areal interpolation.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/tm11C2","usgsCitation":"Sleeter, R., and Gould, M., 2007, Geographic Information System Software to Remodel Population Data Using Dasymetric Mapping Methods (Version 1.0): U.S. Geological Survey Techniques and Methods 11-C2, iii, 15 p., https://doi.org/10.3133/tm11C2.","productDescription":"iii, 15 p.","costCenters":[{"id":293,"text":"Geographic Analysis and Monitoring Program","active":false,"usgs":true}],"links":[{"id":195114,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11291,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/tm/tm11c2/","linkFileType":{"id":5,"text":"html"}}],"edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1de4b07f02db6a996f","contributors":{"authors":[{"text":"Sleeter, Rachel 0000-0003-3477-0436 rsleeter@usgs.gov","orcid":"https://orcid.org/0000-0003-3477-0436","contributorId":666,"corporation":false,"usgs":true,"family":"Sleeter","given":"Rachel","email":"rsleeter@usgs.gov","affiliations":[{"id":242,"text":"Eastern Geographic Science Center","active":true,"usgs":true}],"preferred":true,"id":294956,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gould, Michael mgould@usgs.gov","contributorId":4498,"corporation":false,"usgs":true,"family":"Gould","given":"Michael","email":"mgould@usgs.gov","affiliations":[],"preferred":true,"id":294957,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":81257,"text":"ds277 - 2007 - Surficial Geologic Map and Geochronologic Database, Fish Lake Valley, Esmeralda County, Nevada, and Mono County, California","interactions":[],"lastModifiedDate":"2014-02-28T13:22:22","indexId":"ds277","displayToPublicDate":"2008-05-15T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"277","title":"Surficial Geologic Map and Geochronologic Database, Fish Lake Valley, Esmeralda County, Nevada, and Mono County, California","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/ds277","isbn":"9781411318724","collaboration":"The USGS does not provide technical support for the software associated with this publication.","usgsCitation":"Reheis, M., and Block, D., 2007, Surficial Geologic Map and Geochronologic Database, Fish Lake Valley, Esmeralda County, Nevada, and Mono County, California (Version 1.0): U.S. Geological Survey Data Series 277, Available on DVD-ROM, https://doi.org/10.3133/ds277.","productDescription":"Available on DVD-ROM","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":282954,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/ds/277/report.pdf"},{"id":282955,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/ds/277/application.zip"},{"id":282956,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -118.25,37.3 ], [ -118.25,38 ], [ -117.65,38 ], [ -117.65,37.3 ], [ -118.25,37.3 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae4e4b07f02db68a253","contributors":{"authors":[{"text":"Reheis, Marith C. 0000-0002-8359-323X","orcid":"https://orcid.org/0000-0002-8359-323X","contributorId":101244,"corporation":false,"usgs":true,"family":"Reheis","given":"Marith C.","affiliations":[],"preferred":false,"id":294982,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Block, Debra L.","contributorId":66351,"corporation":false,"usgs":true,"family":"Block","given":"Debra L.","affiliations":[],"preferred":false,"id":294981,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":81230,"text":"sir20075243 - 2007 - An initial-abstraction, constant-loss model for unit hydrograph modeling for applicable watersheds in Texas","interactions":[],"lastModifiedDate":"2016-08-23T13:36:39","indexId":"sir20075243","displayToPublicDate":"2008-05-14T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5243","title":"An initial-abstraction, constant-loss model for unit hydrograph modeling for applicable watersheds in Texas","docAbstract":"

Estimation of representative hydrographs from design storms, which are known as design hydrographs, provides for cost-effective, riskmitigated design of drainage structures such as bridges, culverts, roadways, and other infrastructure. During 2001?07, the U.S. Geological Survey (USGS), in cooperation with the Texas Department of Transportation, investigated runoff hydrographs, design storms, unit hydrographs,and watershed-loss models to enhance design hydrograph estimation in Texas. Design hydrographs ideally should mimic the general volume, peak, and shape of observed runoff hydrographs. Design hydrographs commonly are estimated in part by unit hydrographs. A unit hydrograph is defined as the runoff hydrograph that results from a unit pulse of excess rainfall uniformly distributed over the watershed at a constant rate for a specific duration. A time-distributed, watershed-loss model is required for modeling by unit hydrographs. This report develops a specific time-distributed, watershed-loss model known as an initial-abstraction, constant-loss model. For this watershed-loss model, a watershed is conceptualized to have the capacity to store or abstract an absolute depth of rainfall at and near the beginning of a storm. Depths of total rainfall less than this initial abstraction do not produce runoff. The watershed also is conceptualized to have the capacity to remove rainfall at a constant rate (loss) after the initial abstraction is satisfied. Additional rainfall inputs after the initial abstraction is satisfied contribute to runoff if the rainfall rate (intensity) is larger than the constant loss. The initial abstraction, constant-loss model thus is a two-parameter model. The initial-abstraction, constant-loss model is investigated through detailed computational and statistical analysis of observed rainfall and runoff data for 92 USGS streamflow-gaging stations (watersheds) in Texas with contributing drainage areas from 0.26 to 166 square miles. The analysis is limited to a previously described, watershed-specific, gamma distribution model of the unit hydrograph. In particular, the initial-abstraction, constant-loss model is tuned to the gamma distribution model of the unit hydrograph. A complex computational analysis of observed rainfall and runoff for the 92 watersheds was done to determine, by storm, optimal values of initial abstraction and constant loss. Optimal parameter values for a given storm were defined as those values that produced a modeled runoff hydrograph with volume equal to the observed runoff hydrograph and also minimized the residual sum of squares of the two hydrographs. Subsequently, the means of the optimal parameters were computed on a watershed-specific basis. These means for each watershed are considered the most representative, are tabulated, and are used in further statistical analyses. Statistical analyses of watershed-specific, initial abstraction and constant loss include documentation of the distribution of each parameter using the generalized lambda distribution. The analyses show that watershed development has substantial influence on initial abstraction and limited influence on constant loss. The means and medians of the 92 watershed-specific parameters are tabulated with respect to watershed development; although they have considerable uncertainty, these parameters can be used for parameter prediction for ungaged watersheds. The statistical analyses of watershed-specific, initial abstraction and constant loss also include development of predictive procedures for estimation of each parameter for ungaged watersheds. Both regression equations and regression trees for estimation of initial abstraction and constant loss are provided. The watershed characteristics included in the regression analyses are (1) main-channel length, (2) a binary factor representing watershed development, (3) a binary factor representing watersheds with an abundance of rocky and thin-soiled terrain, and (4) curve numb

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20075243","collaboration":"Prepared in cooperation with the Texas Department of Transportation","usgsCitation":"Asquith, W.H., and Roussel, M.C., 2007, An initial-abstraction, constant-loss model for unit hydrograph modeling for applicable watersheds in Texas (Version 1.0): U.S. Geological Survey Scientific Investigations Report 2007-5243, Report: vi, 82 p.; Downloads Directory, https://doi.org/10.3133/sir20075243.","productDescription":"Report: vi, 82 p.; Downloads Directory","onlineOnly":"N","additionalOnlineFiles":"Y","costCenters":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"links":[{"id":121192,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir_2007_5243.jpg"},{"id":327685,"rank":101,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2007/5243/downloads/pdf/sir2007-5243.pdf","size":"20.3 MB","linkFileType":{"id":1,"text":"pdf"}},{"id":11272,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5243/","linkFileType":{"id":5,"text":"html"}},{"id":327686,"rank":102,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/sir/2007/5243/downloads/","text":"Downloads Directory"}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -102,27 ], [ -102,34.25 ], [ -94,34.25 ], [ -94,27 ], [ -102,27 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4adce4b07f02db686366","contributors":{"authors":[{"text":"Asquith, William H. 0000-0002-7400-1861 wasquith@usgs.gov","orcid":"https://orcid.org/0000-0002-7400-1861","contributorId":1007,"corporation":false,"usgs":true,"family":"Asquith","given":"William","email":"wasquith@usgs.gov","middleInitial":"H.","affiliations":[{"id":48595,"text":"Oklahoma-Texas Water Science Center","active":true,"usgs":true}],"preferred":true,"id":294895,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Roussel, Meghan C. mroussel@usgs.gov","contributorId":1578,"corporation":false,"usgs":true,"family":"Roussel","given":"Meghan","email":"mroussel@usgs.gov","middleInitial":"C.","affiliations":[],"preferred":true,"id":294896,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":81225,"text":"ofr20071422 - 2007 - EAARL topography: Gulf Islands National Seashore: Florida","interactions":[],"lastModifiedDate":"2022-12-05T20:20:18.40996","indexId":"ofr20071422","displayToPublicDate":"2008-05-13T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1422","title":"EAARL topography: Gulf Islands National Seashore: Florida","docAbstract":"

This Web site contains 33 lidar-derived bare earth topography maps and GIS files for the Gulf Islands National Seashore-Florida.

These lidar-derived topography maps were produced as a collaborative effort between the U.S. Geological Survey (USGS) Coastal and Marine Geology Program, FISC St. Petersburg, Florida, the National Park Service (NPS), Gulf Coast Network, Network Inventory and Monitoring Program, and the National Aeronautics and Space Administration (NASA) Wallops Flight Facility. One objective of this research is to create techniques to survey coral reefs and barrier islands for the purposes of geomorphic change studies, habitat mapping, ecological monitoring, change detection, and event assessment. As part of this project, data from an innovative instrument under development at the NASA Wallops Flight Facility, the NASA Experimental Airborne Advanced Research Lidar (EAARL) are being used. This sensor has the potential to make significant contributions in this realm for measuring subaerial and submarine topography wthin cross-environment surveys. High spectral resolution, water-column correction, and low costs were found to be key factors in providing accurate and affordable imagery to costal resource managers.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071422","usgsCitation":"Brock, J., Wright, C.W., Nayegandhi, A., Patterson, M., Wilson, I., and Travers, L.J., 2007, EAARL topography: Gulf Islands National Seashore: Florida: U.S. Geological Survey Open-File Report 2007-1422, HTML Document, https://doi.org/10.3133/ofr20071422.","productDescription":"HTML Document","onlineOnly":"Y","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":11267,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1422/","linkFileType":{"id":5,"text":"html"}},{"id":190497,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071422.gif"},{"id":292704,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1422/start.html","linkFileType":{"id":1,"text":"pdf"}},{"id":410057,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_83553.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Florida","otherGeospatial":"Gulf Islands National Seashore","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -87.4069,\n 30.3056\n ],\n [\n -87.4069,\n 30.3808\n ],\n [\n -86.9236,\n 30.3808\n ],\n [\n -86.9236,\n 30.3056\n ],\n [\n -87.4069,\n 30.3056\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a54e4b07f02db62c38f","contributors":{"authors":[{"text":"Brock, John 0000-0002-5289-9332 jbrock@usgs.gov","orcid":"https://orcid.org/0000-0002-5289-9332","contributorId":2261,"corporation":false,"usgs":true,"family":"Brock","given":"John","email":"jbrock@usgs.gov","affiliations":[{"id":5061,"text":"National Cooperative Geologic Mapping and Landslide Hazards","active":true,"usgs":true}],"preferred":true,"id":294879,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wright, C. Wayne wwright@usgs.gov","contributorId":57422,"corporation":false,"usgs":true,"family":"Wright","given":"C.","email":"wwright@usgs.gov","middleInitial":"Wayne","affiliations":[],"preferred":false,"id":294883,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nayegandhi, Amar","contributorId":37292,"corporation":false,"usgs":true,"family":"Nayegandhi","given":"Amar","affiliations":[],"preferred":false,"id":294881,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Patterson, Matt","contributorId":93982,"corporation":false,"usgs":true,"family":"Patterson","given":"Matt","email":"","affiliations":[],"preferred":false,"id":294884,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wilson, Iris","contributorId":37420,"corporation":false,"usgs":true,"family":"Wilson","given":"Iris","email":"","affiliations":[],"preferred":false,"id":294882,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Travers, Laurinda J. ltravers@usgs.gov","contributorId":3002,"corporation":false,"usgs":true,"family":"Travers","given":"Laurinda","email":"ltravers@usgs.gov","middleInitial":"J.","affiliations":[],"preferred":true,"id":294880,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":81224,"text":"ofr20071375 - 2007 - EAARL topography: Cape Cod National Seashore","interactions":[],"lastModifiedDate":"2022-12-15T20:37:10.754531","indexId":"ofr20071375","displayToPublicDate":"2008-05-13T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1375","title":"EAARL topography: Cape Cod National Seashore","docAbstract":"

This Web site contains 90 Lidar-derived bare earth topography maps and GIS files for the Cape Cod National Seashore.

\n
\n

These Lidar-derived topography maps were produced as a collaborative effort between the U.S. Geological Survey (USGS) Florida Integrated Science Center (FISC) St. Petersburg, Florida, the National Park Service (NPS), Northeast Coastal and Barrier Network, Inventory and Monitoring Program, and the National Aeronautics and Space Administration (NASA) Wallops Flight Facility. One objective of this research is to create techniques to survey coral reefs and barrier islands for the purposes of geomorphic change studies, habitat mapping, ecological monitoring, change detection, and event assessment. As part of this project, data from an innovative instrument under development at the NASA Wallops Flight Facility, the NASA Experimental Airborne Advanced Research Lidar (EAARL) are being used. This sensor has the potential to make significant contributions in this realm for measuring subaerial and submarine topography wthin cross-environment surveys. High spectral resolution, water-column correction, and low costs were found to be key factors in providing accurate and affordable imagery to coastal resource managers.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20071375","usgsCitation":"Brock, J., Wright, C.W., Patterson, M., Nayegandhi, A., and Travers, L.J., 2007, EAARL topography: Cape Cod National Seashore: U.S. Geological Survey Open-File Report 2007-1375, HTML Document, https://doi.org/10.3133/ofr20071375.","productDescription":"HTML Document","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":410571,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_83552.htm","linkFileType":{"id":5,"text":"html"}},{"id":11266,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1375/","linkFileType":{"id":5,"text":"html"}},{"id":292736,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2007/1375/start.html","linkFileType":{"id":5,"text":"html"}},{"id":195308,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20071375.gif"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Cape Cod National Seashore","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -70.2506,41.6371 ], [ -70.2506,42.0858 ], [ -69.9235,42.0858 ], [ -69.9235,41.6371 ], [ -70.2506,41.6371 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a59e4b07f02db62fc01","contributors":{"authors":[{"text":"Brock, John 0000-0002-5289-9332 jbrock@usgs.gov","orcid":"https://orcid.org/0000-0002-5289-9332","contributorId":2261,"corporation":false,"usgs":true,"family":"Brock","given":"John","email":"jbrock@usgs.gov","affiliations":[{"id":5061,"text":"National Cooperative Geologic Mapping and Landslide Hazards","active":true,"usgs":true}],"preferred":true,"id":294874,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wright, C. Wayne wwright@usgs.gov","contributorId":57422,"corporation":false,"usgs":true,"family":"Wright","given":"C.","email":"wwright@usgs.gov","middleInitial":"Wayne","affiliations":[],"preferred":false,"id":294877,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Patterson, Matt","contributorId":93982,"corporation":false,"usgs":true,"family":"Patterson","given":"Matt","email":"","affiliations":[],"preferred":false,"id":294878,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nayegandhi, Amar","contributorId":37292,"corporation":false,"usgs":true,"family":"Nayegandhi","given":"Amar","affiliations":[],"preferred":false,"id":294876,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Travers, Laurinda J. ltravers@usgs.gov","contributorId":3002,"corporation":false,"usgs":true,"family":"Travers","given":"Laurinda","email":"ltravers@usgs.gov","middleInitial":"J.","affiliations":[],"preferred":true,"id":294875,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","interactions":[{"subject":{"id":81282,"text":"pp1703A - 2007 - Ground-water recharge in the arid and semiarid southwestern United States: Climatic and geologic framework","indexId":"pp1703A","publicationYear":"2007","noYear":false,"chapter":"A","title":"Ground-water recharge in the arid and semiarid southwestern United States: Climatic and geologic framework"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":1},{"subject":{"id":81283,"text":"pp1703B - 2007 - Regional analysis of ground-water recharge","indexId":"pp1703B","publicationYear":"2007","noYear":false,"chapter":"B","title":"Regional analysis of ground-water recharge"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 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2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":4},{"subject":{"id":81286,"text":"pp1703E - 2007 - Focused ground-water recharge in the Amargosa Desert Basin","indexId":"pp1703E","publicationYear":"2007","noYear":false,"chapter":"E","title":"Focused ground-water recharge in the Amargosa Desert Basin"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":5},{"subject":{"id":81287,"text":"pp1703F - 2007 - Streamflow, infiltration, and recharge in Arroyo Hondo, New Mexico","indexId":"pp1703F","publicationYear":"2007","noYear":false,"chapter":"F","title":"Streamflow, infiltration, and recharge in Arroyo Hondo, New Mexico"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":6},{"subject":{"id":81288,"text":"pp1703G - 2007 - Ground-water recharge from small intermittent streams in the western Mojave Desert, California","indexId":"pp1703G","publicationYear":"2007","noYear":false,"chapter":"G","title":"Ground-water recharge from small intermittent streams in the western Mojave Desert, California"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":7},{"subject":{"id":81289,"text":"pp1703H - 2007 - Estimated infiltration, percolation, and recharge rates at the Rillito Creek focused recharge investigation site, Pima County, Arizona","indexId":"pp1703H","publicationYear":"2007","noYear":false,"chapter":"H","title":"Estimated infiltration, percolation, and recharge rates at the Rillito Creek focused recharge investigation site, Pima County, Arizona"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":8},{"subject":{"id":81290,"text":"pp1703I - 2007 - Infiltration and recharge at Sand Hollow, an upland bedrock basin in southwestern Utah","indexId":"pp1703I","publicationYear":"2007","noYear":false,"chapter":"I","title":"Infiltration and recharge at Sand Hollow, an upland bedrock basin in southwestern Utah"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":9},{"subject":{"id":81291,"text":"pp1703J - 2007 - Ephemeral-stream channel and basin-floor infiltration and recharge in the Sierra Vista subwatershed of the upper San Pedro Basin, southeastern Arizona","indexId":"pp1703J","publicationYear":"2007","noYear":false,"chapter":"J","title":"Ephemeral-stream channel and basin-floor infiltration and recharge in the Sierra Vista subwatershed of the upper San Pedro Basin, southeastern Arizona"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":10},{"subject":{"id":81292,"text":"pp1703K - 2007 - Streambed infiltration and ground-water flow from the Trout Creek drainage, an intermittent tributary to the Humboldt River, north-central Nevada","indexId":"pp1703K","publicationYear":"2007","noYear":false,"chapter":"K","title":"Streambed infiltration and ground-water flow from the Trout Creek drainage, an intermittent tributary to the Humboldt River, north-central Nevada"},"predicate":"IS_PART_OF","object":{"id":81138,"text":"pp1703 - 2007 - Ground-water recharge in the arid and semiarid southwestern United States","indexId":"pp1703","publicationYear":"2007","noYear":false,"title":"Ground-water recharge in the arid and semiarid southwestern United States"},"id":11}],"lastModifiedDate":"2018-01-24T14:51:34","indexId":"pp1703","displayToPublicDate":"2008-05-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1703","title":"Ground-water recharge in the arid and semiarid southwestern United States","docAbstract":"

Ground-water recharge in the arid and semiarid southwestern United States results from the complex interplay of climate, geology, and vegetation across widely ranging spatial and temporal scales. Present-day recharge tends to be narrowly focused in time and space. Widespread water-table declines accompanied agricultural development during the twentieth century, demonstrating that sustainable ground-water supplies are not guaranteed when part of the extracted resource represents paleorecharge. Climatic controls on ground-water recharge range from seasonal cycles of summer monsoonal and winter frontal storms to multimillennial cycles of glacial and interglacial periods. Precipitation patterns reflect global-scale interactions among the oceans, atmosphere, and continents. Large-scale climatic influences associated with El Niño and Pacific Decadal Oscillations strongly, but irregularly, control weather in the study area, so that year-to-year variations in precipitation and ground-water recharge are large and difficult to predict. Proxy data indicate geologically recent periods of naturally occurring multidecadal droughts unlike any in the modern instrumental record. Any anthropogenically induced climate change will likely reduce ground-water recharge through diminished snowpack at higher elevations. Future changes in El Niño and monsoonal patterns, both crucial to precipitation in the study area, are highly uncertain in current models. Current land-use modifications influence ground-water recharge through vegetation, irrigation, and impermeable area. High mountain ranges bounding the study area—the San Bernadino Mountains and Sierra Nevada to the west, and the Wasatch and southern Colorado Rocky Mountains to the east—provide external geologic controls on ground-water recharge. Internal geologic controls stem from tectonic processes that led to numerous, variably connected alluvial-filled basins, exposure of extensive Paleozoic aquifers in mountainous recharge areas, and distinct modes of recharge in the Colorado Plateau and Basin and Range subregions.

The chapters in this professional paper present (first) an overview of climatic and hydrogeologic framework (chapter A), followed by a regional analysis of ground-water recharge across the entire study area (chapter B). These are followed by an overview of site-specific case studies representing different subareas of the geographically diverse arid and semiarid southwestern United States (chapter C); the case studies themselves follow in chapters D–K. The regional analysis includes detailed hydrologic modeling within the framework of a high-resolution geographic-information system (GIS). Results from the regional analysis are used to explore both the distribution of ground-water recharge for mean climatic conditions as well as the influence of two climatic patterns—the El Niño-Southern Oscillation and Pacific Decadal Oscillation—that impart a high degree of variability to the hydrologic cycle. Individual case studies employ a variety of geophysical and geochemical techniques to investigate recharge processes and relate the processes to local geologic and climatic conditions. All of the case studies made use of naturally occurring tracers to quantify recharge. Thermal and geophysical techniques that were developed in the course of the studies are presented in appendices.

The quantification of ground-water recharge in arid settings is inherently difficult due to the generally low amount of recharge, its spatially and temporally spotty nature, and the absence of techniques for directly measuring fluxes entering the saturated zone from the unsaturated zone. Deep water tables in arid alluvial basins correspond to thick unsaturated zones that produce up to millennial time lags between changes in hydrologic conditions at the land surface and subsequent changes in recharge to underlying ground water. Recent advances in physical, chemical, isotopic, and modeling techniques have fostered new types of recharge assessments. Chemical and isotopic techniques include an increasing variety of environmental tracers that are useful and robust. Physically based techniques include the use of heat as a tracer and computationally intensive geophysical imaging tools for characterizing hydrologic conditions in the unsaturated zone. Modeling-based techniques include spatially distributed water-budget computations using high-resolution remotely sensed and ground-based geographic data. Application of these techniques to arid and semiarid settings in the southwestern United States reveals distinct patterns of recharge corresponding to geologic setting, climatic and vegetative history, and land use. Analysis of recharge patterns shows that large expanses of alluvial basin floors are drying out under current climatic conditions, with little to no recharge to underlying ground water. Ground-water recharge occurs mainly beneath upland catchments in which thin soils overlie permeable bedrock, ephemeral channels in which flow may average only several hours per year, and active agricultural areas. The chapters in this professional paper represent a coordinated attempt to develop a better understanding of one of the Nation's most critical yet difficult-to-quantify renewable resources.

","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/pp1703","usgsCitation":"2007, Ground-water recharge in the arid and semiarid southwestern United States (Version 1.0): U.S. Geological Survey Professional Paper 1703, 11 Chapters: A-K; 2 Appendices, https://doi.org/10.3133/pp1703.","productDescription":"11 Chapters: A-K; 2 Appendices","onlineOnly":"Y","additionalOnlineFiles":"Y","costCenters":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"links":[{"id":195710,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11161,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/pp1703/","linkFileType":{"id":5,"text":"html"}}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -124,25 ], [ -124,49 ], [ -93,49 ], [ -93,25 ], [ -124,25 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab0e4b07f02db66d4b5","contributors":{"editors":[{"text":"Stonestrom, David A. 0000-0001-7883-3385 dastones@usgs.gov","orcid":"https://orcid.org/0000-0001-7883-3385","contributorId":2280,"corporation":false,"usgs":true,"family":"Stonestrom","given":"David","email":"dastones@usgs.gov","middleInitial":"A.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":725729,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Constantz, Jim","contributorId":66338,"corporation":false,"usgs":true,"family":"Constantz","given":"Jim","affiliations":[],"preferred":false,"id":725730,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Ferré, Ty P.A.","contributorId":35647,"corporation":false,"usgs":false,"family":"Ferré","given":"Ty P.A.","affiliations":[],"preferred":false,"id":725731,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Leake, Stanley A. 0000-0003-3568-2542 saleake@usgs.gov","orcid":"https://orcid.org/0000-0003-3568-2542","contributorId":1846,"corporation":false,"usgs":true,"family":"Leake","given":"Stanley","email":"saleake@usgs.gov","middleInitial":"A.","affiliations":[{"id":128,"text":"Arizona Water Science Center","active":true,"usgs":true}],"preferred":true,"id":725732,"contributorType":{"id":2,"text":"Editors"},"rank":4}]}} ,{"id":81137,"text":"sir20075197 - 2007 - Consumptive Water-Use Coefficients for the Great Lakes Basin and Climatically Similar Areas","interactions":[],"lastModifiedDate":"2012-02-02T00:14:26","indexId":"sir20075197","displayToPublicDate":"2008-05-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-5197","title":"Consumptive Water-Use Coefficients for the Great Lakes Basin and Climatically Similar Areas","docAbstract":"Consumptive water use is the portion of water withdrawn (for a particular use) that is evaporated, transpired, incorporated into products or crops, consumed by humans or livestock, or otherwise removed from the immediate water environment. This report, which is organized by water?use categories, includes consumptive?use coefficients for the Great Lakes Basin (including Canada) and for areas climatically similar to the Great Lakes Basin. This report also contains an annotated bibliography of consumptive water?use coefficients. Selected references are listed for consumptive?use data from elsewhere in the world.\r\n\r\nFor the industrial water?use category, the median consumptive?use coefficients were 10 percent for the Great Lakes Basin, climatically similar areas, and the world; the 25th and 75th percentiles for these geographic areas were comparable within 6 percent. The combined domestic and public?supply consumptive?use statistics (median, 25th and 75th percentiles) were between 10 to 20 percent for the various geographic areas. Although summary statistics were similar for coefficients in the livestock and irrigation water?use categories for the Great Lakes Basin and climatically similar areas, statistic values for the world on a whole were substantially lower (15 to 28 percent lower). Commercial and thermoelectric power consumptive?use coefficient statistics (median, 25th, and 75th percentile) also were comparable for the Great Lakes Basin and climatically similar areas, within 2 percent. References for other countries were not found for commercial and thermoelectric power water?use categories. The summary statistics for the mining consumptive?use coefficients varied, likely because of differences in types of mining, processes, or equipment.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/sir20075197","usgsCitation":"Shaffer, K., and Runkle, D.L., 2007, Consumptive Water-Use Coefficients for the Great Lakes Basin and Climatically Similar Areas: U.S. Geological Survey Scientific Investigations Report 2007-5197, viii, 191 p., https://doi.org/10.3133/sir20075197.","productDescription":"viii, 191 p.","costCenters":[{"id":448,"text":"National Water Availability and Use Program","active":false,"usgs":true}],"links":[{"id":195435,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11160,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2007/5197/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afde4b07f02db696afa","contributors":{"authors":[{"text":"Shaffer, Kimberly H.","contributorId":98275,"corporation":false,"usgs":true,"family":"Shaffer","given":"Kimberly H.","affiliations":[],"preferred":false,"id":294442,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Runkle, Donna L. dlrunkle@usgs.gov","contributorId":2556,"corporation":false,"usgs":true,"family":"Runkle","given":"Donna","email":"dlrunkle@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":true,"id":294441,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":81132,"text":"ds332 - 2007 - Streamflow Measurements in North-Central Nebraska, November 2006","interactions":[],"lastModifiedDate":"2013-06-04T10:44:42","indexId":"ds332","displayToPublicDate":"2008-04-22T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"332","title":"Streamflow Measurements in North-Central Nebraska, November 2006","docAbstract":"Streamflow measurements were made during November of 2006 in the Elkhorn and Loup River basins and selected streams in the Niobrara and Platte River basins in north-central Nebraska. At these 531 sites, flows ranging from no flow to 2,600 ft3/s were measured or observed. The data are presented in a table along with the quality of measurement and the method that was used. Maps show the location of the study area and the sites.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/ds332","collaboration":"Prepared in cooperation with the Elkhorn-Loup Model Group","usgsCitation":"Peterson, S.M., and Strauch, K.R., 2007, Streamflow Measurements in North-Central Nebraska, November 2006: U.S. Geological Survey Data Series 332, iv, 29 p., https://doi.org/10.3133/ds332.","productDescription":"iv, 29 p.","temporalStart":"2006-11-01","temporalEnd":"2006-11-30","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":273175,"type":{"id":16,"text":"Metadata"},"url":"https://water.usgs.gov/GIS/metadata/usgswrd/XML/ds332.xml"},{"id":195442,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11154,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/ds/332/","linkFileType":{"id":5,"text":"html"}}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -104,40 ], [ -104,43 ], [ -95,43 ], [ -95,40 ], [ -104,40 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b15e4b07f02db6a4f90","contributors":{"authors":[{"text":"Peterson, Steven M. 0000-0002-9130-1284 speterson@usgs.gov","orcid":"https://orcid.org/0000-0002-9130-1284","contributorId":847,"corporation":false,"usgs":true,"family":"Peterson","given":"Steven","email":"speterson@usgs.gov","middleInitial":"M.","affiliations":[{"id":464,"text":"Nebraska Water Science Center","active":true,"usgs":true}],"preferred":true,"id":294428,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Strauch, Kellan R. 0000-0002-7218-2099 kstrauch@usgs.gov","orcid":"https://orcid.org/0000-0002-7218-2099","contributorId":1006,"corporation":false,"usgs":true,"family":"Strauch","given":"Kellan","email":"kstrauch@usgs.gov","middleInitial":"R.","affiliations":[{"id":464,"text":"Nebraska Water Science Center","active":true,"usgs":true}],"preferred":true,"id":294429,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":81123,"text":"i2600H - 2007 - Coastal-Change and Glaciological Map of the Northern Ross Ice Shelf Area, Antarctica: 1962-2004","interactions":[],"lastModifiedDate":"2012-02-10T00:11:47","indexId":"i2600H","displayToPublicDate":"2008-04-22T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2600","chapter":"H","title":"Coastal-Change and Glaciological Map of the Northern Ross Ice Shelf Area, Antarctica: 1962-2004","docAbstract":"Changes in the area and volume of polar ice sheets are intricately linked to changes in global climate, and the resulting changes in sea level could severely impact the densely populated coastal regions on Earth. Melting of the West Antarctic part alone of the Antarctic ice sheet would cause a sea-level rise of approximately 6 meters (m). The potential sea-level rise after melting of the entire Antarctic ice sheet is estimated to be 65 m (Lythe and others, 2001) to 73 m (Williams and Hall, 1993). The mass balance (the net volumetric gain or loss) of the Antarctic ice sheet is highly complex, responding differently to different conditions in each region (Vaughan, 2005). In a review paper, Rignot and Thomas (2002) concluded that the West Antarctic ice sheet is probably becoming thinner overall; although it is thickening in the west, it is thinning in the north. Thomas and others (2004), on the basis of aircraft and satellite laser altimetry surveys, believe the thinning may be accelerating. Joughin and Tulaczyk (2002), on the basis of analysis of ice-flow velocities derived from synthetic aperture radar, concluded that most of the Ross ice streams (ice streams on the east side of the Ross Ice Shelf) have a positive mass balance, whereas Rignot and others (2004) infer even larger negative mass balance for glaciers flowing northward into the Amundsen Sea, a trend suggested by Swithinbank and others (2003a,b; 2004). The mass balance of the East Antarctic ice sheet is thought by Davis and others (2005) to be strongly positive on the basis of the change in satellite altimetry measurements made between 1992 and 2003.\r\n\r\nMeasurement of changes in area and mass balance of the Antarctic ice sheet was given a very high priority in recommendations by the Polar Research Board of the National Research Council (1986), in subsequent recommendations by the Scientific Committee on Antarctic Research (SCAR) (1989, 1993), and by the National Science Foundation?s (1990) Division of Polar Programs. On the basis of these recommendations, the U.S. Geological Survey (USGS) decided that the archive of early 1970s Landsat 1, 2, and 3 Multispectral Scanner (MSS) images of Antarctica and the subsequent repeat coverage made possible with Landsat and other satellite images provided an excellent means of documenting changes in the coastline of Antarctica (Ferrigno and Gould, 1987). The availability of this information provided the impetus for carrying out a comprehensive analysis of the glaciological features of the coastal regions and changes in ice fronts of Antarctica (Swithinbank, 1988; Williams and Ferrigno, 1988). The project was later modified to include Landsat 4 and 5 MSS and Thematic Mapper (TM) images (and in some areas Landsat 7 Enhanced Thematic Mapper Plus [ETM+] images), RADARSAT images, and other data where available, in order to compare changes that occurred during a 20- to 25- or 30-year time interval (or longer where data were available, as in the Antarctic Peninsula). The results of the analysis are being used to produce a digital database and a series of USGS Geologic Investigations Series Maps (I?2600) (Williams and others, 1995; Williams and Ferrigno, 1998; Ferrigno and others, 2002) (available online at http://www.glaciers.er.usgs.gov).","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/i2600H","isbn":"9781411309616","collaboration":"Prepared in cooperation with the Scott Polar Research Institute, University of Cambridge, United Kingdom","usgsCitation":"Ferrigno, J.G., Foley, K.M., Swithinbank, C., and Williams, R., 2007, Coastal-Change and Glaciological Map of the Northern Ross Ice Shelf Area, Antarctica: 1962-2004: U.S. Geological Survey IMAP 2600, Pamphlet: iv, 11 p.; Plate: 43 x 27 inches, https://doi.org/10.3133/i2600H.","productDescription":"Pamphlet: iv, 11 p.; Plate: 43 x 27 inches","additionalOnlineFiles":"Y","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":195438,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":11145,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/imap/i-2600-h/","linkFileType":{"id":5,"text":"html"}}],"scale":"1000000","projection":"Polar Stereographic","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 169,-81 ], [ 169,-76 ], [ -158,-76 ], [ -158,-81 ], [ 169,-81 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9be4b07f02db65de37","contributors":{"authors":[{"text":"Ferrigno, Jane G. jferrign@usgs.gov","contributorId":39825,"corporation":false,"usgs":true,"family":"Ferrigno","given":"Jane","email":"jferrign@usgs.gov","middleInitial":"G.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":false,"id":294408,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Foley, Kevin M. 0000-0003-1013-462X kfoley@usgs.gov","orcid":"https://orcid.org/0000-0003-1013-462X","contributorId":2543,"corporation":false,"usgs":true,"family":"Foley","given":"Kevin","email":"kfoley@usgs.gov","middleInitial":"M.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":294406,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Swithinbank, Charles","contributorId":26368,"corporation":false,"usgs":true,"family":"Swithinbank","given":"Charles","email":"","affiliations":[],"preferred":false,"id":294407,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Williams, Richard S. Jr.","contributorId":90679,"corporation":false,"usgs":true,"family":"Williams","given":"Richard S.","suffix":"Jr.","affiliations":[],"preferred":false,"id":294409,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":81097,"text":"sim2889 - 2007 - Geologic Map of the Frederick 30' x 60' Quadrangle, Maryland, Virginia, and West Virginia","interactions":[],"lastModifiedDate":"2012-02-10T00:11:47","indexId":"sim2889","displayToPublicDate":"2008-04-16T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":333,"text":"Scientific Investigations Map","code":"SIM","onlineIssn":"2329-132X","printIssn":"2329-1311","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2889","title":"Geologic Map of the Frederick 30' x 60' Quadrangle, Maryland, Virginia, and West Virginia","docAbstract":"The Frederick 30? ? 60? quadrangle lies within the Potomac River watershed of the Chesapeake Bay drainage basin. The map area covers parts of Montgomery, Howard, Carroll, Frederick, and Washington Counties in Maryland; Loudoun, Clarke, and Fairfax Counties in Virginia; and Jefferson and Berkeley Counties in West Virginia. Many geologic features (such as faults and folds) are named for geographic features that may or may not be shown on the 1:100,000-scale base map. \r\n\r\nThe geology of the Frederick 30? ? 60? quadrangle, Maryland, Virginia, and West Virginia, was first mapped on the 32 1:24,000-scale 7.5-minute quadrangle base maps between 1989 and 1994. The geologic data were compiled manually at 1:100,000 scale in 1997 and were digitized between 1998 and 1999. The geologic map and database may be used to support activities such as land-use planning, soil mapping, groundwater availability and quality studies, identifying aggregate resources, and conducting engineering and environmental studies. \r\n\r\nThe map area covers distinct geologic provinces and sections of the central Appalachian region that are defined by unique bedrock and resulting landforms. From west to east, the provinces include the Great Valley section of the Valley and Ridge province, the Blue Ridge province, and the Piedmont province; in the extreme southeastern corner, a small part of the Coastal Plain province is present. The Piedmont province is divided into several sections; from west to east, hey are the Frederick Valley synclinorium, the Culpeper and Gettysburg basins, the Sugarloaf Mountain anticlinorium, the Westminster terrane, and the Potomac terrane. The geology of the Frederick quadrangle is discussed by geologic province and sections; the geologic units within each province are discussed from oldest to youngest. Where applicable, the discussion includes information on tectonic origins. \r\n\r\nFor more information concerning the report, please contact the author.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/sim2889","isbn":"9781411311657","collaboration":"Prepared in cooperation with the Maryland Geological Survey","usgsCitation":"Southworth, S., Brezinski, D.K., Drake, A., Burton, W.C., Orndorff, R.C., Froelich, A., Reddy, J.E., Denenny, D., and Daniels, D.L., 2007, Geologic Map of the Frederick 30' x 60' Quadrangle, Maryland, Virginia, and West Virginia: U.S. Geological Survey Scientific Investigations Map 2889, Pamphlet: vi, 42 p.; Map Sheet: 57 x 38 inches, https://doi.org/10.3133/sim2889.","productDescription":"Pamphlet: vi, 42 p.; Map Sheet: 57 x 38 inches","additionalOnlineFiles":"Y","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":110770,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_83523.htm","linkFileType":{"id":5,"text":"html"},"description":"83523"},{"id":195690,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":10966,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sim/2889/","linkFileType":{"id":5,"text":"html"}}],"scale":"1","projection":"Universal Transverse Mercator","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -78,39 ], [ -78,39.5 ], [ -77,39.5 ], [ -77,39 ], [ -78,39 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a8501","contributors":{"authors":[{"text":"Southworth, Scott","contributorId":93933,"corporation":false,"usgs":true,"family":"Southworth","given":"Scott","affiliations":[],"preferred":false,"id":294333,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brezinski, David K.","contributorId":49428,"corporation":false,"usgs":true,"family":"Brezinski","given":"David","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":294329,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Drake, Avery Jr.","contributorId":62582,"corporation":false,"usgs":true,"family":"Drake","given":"Avery","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":294331,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Burton, William C. 0000-0001-7519-5787 bburton@usgs.gov","orcid":"https://orcid.org/0000-0001-7519-5787","contributorId":1293,"corporation":false,"usgs":true,"family":"Burton","given":"William","email":"bburton@usgs.gov","middleInitial":"C.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":294326,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Orndorff, Randall C. 0000-0002-8956-5803 rorndorf@usgs.gov","orcid":"https://orcid.org/0000-0002-8956-5803","contributorId":2739,"corporation":false,"usgs":true,"family":"Orndorff","given":"Randall","email":"rorndorf@usgs.gov","middleInitial":"C.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true},{"id":501,"text":"Office of Science Quality and Integrity","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":true,"id":294328,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Froelich, Albert J.","contributorId":60200,"corporation":false,"usgs":true,"family":"Froelich","given":"Albert J.","affiliations":[],"preferred":false,"id":294330,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Reddy, James E. 0000-0002-6998-7267 jreddy@usgs.gov","orcid":"https://orcid.org/0000-0002-6998-7267","contributorId":1080,"corporation":false,"usgs":true,"family":"Reddy","given":"James","email":"jreddy@usgs.gov","middleInitial":"E.","affiliations":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"preferred":true,"id":294325,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Denenny, Danielle","contributorId":78804,"corporation":false,"usgs":true,"family":"Denenny","given":"Danielle","affiliations":[],"preferred":false,"id":294332,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Daniels, David L. 0000-0003-0599-8036 dave@usgs.gov","orcid":"https://orcid.org/0000-0003-0599-8036","contributorId":1792,"corporation":false,"usgs":true,"family":"Daniels","given":"David","email":"dave@usgs.gov","middleInitial":"L.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":294327,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":81092,"text":"tm6A24 - 2007 - Documentation of a Conduit Flow Process (CFP) for MODFLOW-2005","interactions":[],"lastModifiedDate":"2012-02-02T00:07:18","indexId":"tm6A24","displayToPublicDate":"2008-04-15T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":335,"text":"Techniques and Methods","code":"TM","onlineIssn":"2328-7055","printIssn":"2328-7047","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"6-A24","title":"Documentation of a Conduit Flow Process (CFP) for MODFLOW-2005","docAbstract":"This report documents the Conduit Flow Process (CFP) for the modular finite-difference ground-water flow model, MODFLOW-2005. The CFP has the ability to simulate turbulent ground-water flow conditions by: (1) coupling the traditional ground-water flow equation with formulations for a discrete network of cylindrical pipes (Mode 1), (2) inserting a high-conductivity flow layer that can switch between laminar and turbulent flow (Mode 2), or (3) simultaneously coupling a discrete pipe network while inserting a high-conductivity flow layer that can switch between laminar and turbulent flow (Mode 3). Conduit flow pipes (Mode 1) may represent dissolution or biological burrowing features in carbonate aquifers, voids in fractured rock, and (or) lava tubes in basaltic aquifers and can be fully or partially saturated under laminar or turbulent flow conditions. Preferential flow layers (Mode 2) may represent: (1) a porous media where turbulent flow is suspected to occur under the observed hydraulic gradients; (2) a single secondary porosity subsurface feature, such as a well-defined laterally extensive underground cave; or (3) a horizontal preferential flow layer consisting of many interconnected voids. In this second case, the input data are effective parameters, such as a very high hydraulic conductivity, representing multiple features.\r\n\r\nData preparation is more complex for CFP Mode 1 (CFPM1) than for CFP Mode 2 (CFPM2). Specifically for CFPM1, conduit pipe locations, lengths, diameters, tortuosity, internal roughness, critical Reynolds numbers (NRe), and exchange conductances are required. CFPM1, however, solves the pipe network equations in a matrix that is independent of the porous media equation matrix, which may mitigate numerical instability associated with solution of dual flow components within the same matrix. CFPM2 requires less hydraulic information and knowledge about the specific location and hydraulic properties of conduits, and turbulent flow is approximated by modifying horizontal conductances assembled by the Block-Centered Flow (BCF), Layer-Property Flow (LPF), or Hydrogeologic-Unit Flow Packages (HUF) of MODFLOW-2005.\r\n\r\nFor both conduit flow pipes (CFPM1) and preferential flow layers (CFPM2), critical Reynolds numbers are used to determine if flow is laminar or turbulent. Due to conservation of momentum, flow in a laminar state tends to remain laminar and flow in a turbulent state tends to remain turbulent. This delayed transition between laminar and turbulent flow is introduced in the CFP, which provides an additional benefit of facilitating convergence of the computer algorithm during iterations of transient simulations. Specifically, the user can specify a higher critical Reynolds number to determine when laminar flow within a pipe converts to turbulent flow, and a lower critical Reynolds number for determining when a pipe with turbulent flow switches to laminar flow. With CFPM1, the Hagen-Poiseuille equation is used for laminar flow conditions and the Darcy-Weisbach equation is applied to turbulent flow conditions. With CFPM2, turbulent flow is approximated by reducing the laminar hydraulic conductivity by a nonlinear function of the Reynolds number, once the critical head difference is exceeded. This adjustment approximates the reductions in mean velocity under turbulent ground-water flow conditions.","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Techniques and Methods, Book 6, Chapter A24","largerWorkSubtype":{"id":5,"text":"USGS Numbered Series"},"language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/tm6A24","usgsCitation":"Shoemaker, W., Kuniansky, E.L., Birk, S., Bauer, S., and Swain, E.D., 2007, Documentation of a Conduit Flow Process (CFP) for MODFLOW-2005: U.S. Geological Survey Techniques and Methods 6-A24, viii, 50 p., https://doi.org/10.3133/tm6A24.","productDescription":"viii, 50 p.","onlineOnly":"Y","additionalOnlineFiles":"N","costCenters":[{"id":275,"text":"Florida Integrated Science Center","active":false,"usgs":true}],"links":[{"id":125744,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/tm_6_a24.gif"},{"id":10961,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/tm/tm6a24/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e48c1e4b07f02db53c8e0","contributors":{"authors":[{"text":"Shoemaker, W. 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Lauderdale","active":true,"usgs":true}],"preferred":true,"id":294311,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kuniansky, Eve L. 0000-0002-5581-0225 elkunian@usgs.gov","orcid":"https://orcid.org/0000-0002-5581-0225","contributorId":932,"corporation":false,"usgs":true,"family":"Kuniansky","given":"Eve","email":"elkunian@usgs.gov","middleInitial":"L.","affiliations":[{"id":509,"text":"Office of the Associate Director for Water","active":true,"usgs":true},{"id":5064,"text":"Southeast Regional Director's Office","active":true,"usgs":true}],"preferred":true,"id":294310,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Birk, Steffen","contributorId":61055,"corporation":false,"usgs":true,"family":"Birk","given":"Steffen","email":"","affiliations":[],"preferred":false,"id":294314,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bauer, Sebastian","contributorId":40232,"corporation":false,"usgs":true,"family":"Bauer","given":"Sebastian","email":"","affiliations":[],"preferred":false,"id":294313,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Swain, Eric D. 0000-0001-7168-708X edswain@usgs.gov","orcid":"https://orcid.org/0000-0001-7168-708X","contributorId":1538,"corporation":false,"usgs":true,"family":"Swain","given":"Eric","email":"edswain@usgs.gov","middleInitial":"D.","affiliations":[{"id":27821,"text":"Caribbean-Florida Water Science Center","active":true,"usgs":true}],"preferred":true,"id":294312,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":81091,"text":"ds312 - 2007 - Bathymetric survey of the nearshore from Belle Pass to Caminada Pass, Louisiana: Methods and data report","interactions":[],"lastModifiedDate":"2024-07-30T18:37:33.803667","indexId":"ds312","displayToPublicDate":"2008-04-12T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"312","title":"Bathymetric survey of the nearshore from Belle Pass to Caminada Pass, Louisiana: Methods and data report","docAbstract":"

The U.S. Geological Survey (USGS), in cooperation with the University of New Orleans (UNO) and the Louisiana Department of Natural Resources (LDNR), conducted a high-resolution, single-beam bathymetric survey along the Louisiana southern coastal zone from Belle Pass to Caminada Pass. The survey consisted of 483 line kilometers of data acquired in July and August of 2005. This report outlines the methodology and provides the data from the survey. Analysis of the data and comparison to a similar bathymetric survey completed in 1989 show significant loss of seafloor and shoreline retreat, which is consistent with previously published estimates of shoreline change in the study area.

","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ds312","usgsCitation":"DeWitt, N.T., Flocks, J.G., Hansen, M., Kulp, M., and Reynolds, B., 2007, Bathymetric survey of the nearshore from Belle Pass to Caminada Pass, Louisiana: Methods and data report: U.S. Geological Survey Data Series 312, Report: vii, 29 p.; CSV File; ReadMe, https://doi.org/10.3133/ds312.","productDescription":"Report: vii, 29 p.; CSV File; ReadMe","numberOfPages":"36","temporalStart":"2005-07-01","temporalEnd":"2005-08-31","costCenters":[{"id":275,"text":"Florida Integrated Science Center","active":false,"usgs":true}],"links":[{"id":292868,"rank":4,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/ds/312/data/readme.txt","linkFileType":{"id":2,"text":"txt"}},{"id":292866,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/ds/312/ds-312.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":292867,"rank":2,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/ds/312/data/dataseries312_2005bathymetry.csv","linkFileType":{"id":7,"text":"csv"}},{"id":10960,"rank":5,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/ds/312/","linkFileType":{"id":5,"text":"html"}},{"id":190757,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ds312.jpg"},{"id":431631,"rank":6,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_83512.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Louisiana","otherGeospatial":"Belle Pass, Caminada Pass","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -90.2197,\n 29.0136\n ],\n [\n -90.2197,\n 29.1961\n ],\n [\n -90.0042,\n 29.1961\n ],\n [\n -90.0042,\n 29.0136\n ],\n [\n -90.2197,\n 29.0136\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a6fe4b07f02db640aa0","contributors":{"authors":[{"text":"DeWitt, Nancy T. 0000-0002-2419-4087 ndewitt@usgs.gov","orcid":"https://orcid.org/0000-0002-2419-4087","contributorId":4095,"corporation":false,"usgs":true,"family":"DeWitt","given":"Nancy","email":"ndewitt@usgs.gov","middleInitial":"T.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":true,"id":294306,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Flocks, James G. 0000-0002-6177-7433 jflocks@usgs.gov","orcid":"https://orcid.org/0000-0002-6177-7433","contributorId":816,"corporation":false,"usgs":true,"family":"Flocks","given":"James","email":"jflocks@usgs.gov","middleInitial":"G.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":294305,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hansen, Mark","contributorId":81893,"corporation":false,"usgs":true,"family":"Hansen","given":"Mark","affiliations":[],"preferred":false,"id":294309,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kulp, Mark","contributorId":77982,"corporation":false,"usgs":true,"family":"Kulp","given":"Mark","affiliations":[],"preferred":false,"id":294308,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Reynolds, B.J.","contributorId":47874,"corporation":false,"usgs":true,"family":"Reynolds","given":"B.J.","email":"","affiliations":[],"preferred":false,"id":294307,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":81075,"text":"sir20085022 - 2007 - Earth science and public health: Proceedings of the Second National Conference on USGS Health-Related Research","interactions":[],"lastModifiedDate":"2019-09-27T16:41:17","indexId":"sir20085022","displayToPublicDate":"2008-04-05T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2008-5022","displayTitle":"Earth Science and Public Health: Proceedings of the Second National Conference on USGS Health-Related Research","title":"Earth science and public health: Proceedings of the Second National Conference on USGS Health-Related Research","docAbstract":"The mission of the U.S. Geological Survey (USGS) is to serve the Nation by providing reliable scientific information to describe and understand the earth; minimize loss of life and property from natural disasters; manage water, biological, energy, and mineral resources; and enhance and protect our quality of life. As the Nation?s largest water, earth, and biological science and civilian mapping agency, the USGS can play a significant role in providing scientific knowledge and information that will improve our understanding of the relations of environment and wildlife to human health and disease. USGS human health-related research is unique in the Federal government because it brings together a broad spectrum of natural science expertise and information, including extensive data collection and monitoring on varied landscapes and ecosystems across the Nation.\r\n\r\nUSGS can provide a great service to the public health community by synthesizing the scientific information and knowledge on our natural and living resources that influence human health, and by bringing this science to the public health community in a manner that is most useful. Partnerships with health scientists and managers are essential to the success of these efforts. USGS scientists already are working closely with the public health community to pursue rigorous inquiries into the connections between natural science and public health. Partnering agencies include the Armed Forces Institute of Pathology, Agency for Toxic Substances Disease Registry, Centers for Disease Control and Prevention, U.S. Environmental Protection Agency, Food and Drug Administration, Mine Safety and Health Administration, National Cancer Institute, National Institute of Allergy and Infectious Disease, National Institute of Environmental Health Sciences, National Institute for Occupational Safety and Health, U.S. Public Health Service, and the U.S. Army Medical Research Institute of Infectious Diseases. Collaborations between public health scientists and earth scientists can lead to improved solutions for existing and emerging environmental health problems.\r\n\r\nThis report summarizes the presentations and discussions held at the Second National Conference on USGS Health-Related Research, held at the USGS national headquarters in Reston, Virginia. The report presents 68 abstracts of technical presentations made at the conference and summaries of six topical breakout sessions. The abstracts cover a broad range of issues and demonstrate connections between human health and the quality and condition of our environment and wildlife. The summaries of the topical breakout sessions present ideas for advancing interdisciplinary science in areas of earth science and human health.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20085022","usgsCitation":"Buxton, H.T., Griffin, D.W., and Pierce, B.S., 2007, Earth science and public health: Proceedings of the Second National Conference on USGS Health-Related Research: U.S. Geological Survey Scientific Investigations Report 2008-5022, viii, 48 p., https://doi.org/10.3133/sir20085022.","productDescription":"viii, 48 p.","onlineOnly":"Y","temporalStart":"2007-02-27","temporalEnd":"2007-03-01","costCenters":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":195163,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":10946,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2008/5022/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a54e4b07f02db62c1af","contributors":{"authors":[{"text":"Buxton, Herbert T. hbuxton@usgs.gov","contributorId":1911,"corporation":false,"usgs":true,"family":"Buxton","given":"Herbert","email":"hbuxton@usgs.gov","middleInitial":"T.","affiliations":[{"id":5056,"text":"Office of the AD Energy and Minerals, and Environmental Health","active":true,"usgs":true}],"preferred":true,"id":294264,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Griffin, Dale W. 0000-0003-1719-5812 dgriffin@usgs.gov","orcid":"https://orcid.org/0000-0003-1719-5812","contributorId":2178,"corporation":false,"usgs":true,"family":"Griffin","given":"Dale","email":"dgriffin@usgs.gov","middleInitial":"W.","affiliations":[{"id":574,"text":"St. Petersburg Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":294265,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pierce, Brenda S. bpierce@usgs.gov","contributorId":268,"corporation":false,"usgs":true,"family":"Pierce","given":"Brenda","email":"bpierce@usgs.gov","middleInitial":"S.","affiliations":[],"preferred":true,"id":294263,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":81046,"text":"ofr20071143 - 2007 - EL68D Wasteway Watershed Land-Cover Generation","interactions":[],"lastModifiedDate":"2012-02-02T00:14:26","indexId":"ofr20071143","displayToPublicDate":"2008-03-27T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2007-1143","title":"EL68D Wasteway Watershed Land-Cover Generation","docAbstract":"Classification of land cover from Landsat Enhanced Thematic Mapper Plus (ETM+) for the EL68D Wasteway Watershed in the State of Washington is documented. The procedures for classification include use of two ETM+ scenes in a simultaneous unsupervised classification process supported by extensive field data collection using Global Positioning System receivers and digital photos. The procedure resulted in a detailed classification at the individual crop species level.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/ofr20071143","usgsCitation":"Ruhl, S., Usery, E.L., and Finn, M.P., 2007, EL68D Wasteway Watershed Land-Cover Generation: U.S. Geological Survey Open-File Report 2007-1143, iv, 28 p., https://doi.org/10.3133/ofr20071143.","productDescription":"iv, 28 p.","costCenters":[{"id":425,"text":"National Geospatial Technical Operations Center","active":false,"usgs":true}],"links":[{"id":195412,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":10909,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2007/1143/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a54e4b07f02db62c367","contributors":{"authors":[{"text":"Ruhl, Sheila","contributorId":103759,"corporation":false,"usgs":true,"family":"Ruhl","given":"Sheila","email":"","affiliations":[],"preferred":false,"id":294212,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Usery, E. Lynn 0000-0002-2766-2173 usery@usgs.gov","orcid":"https://orcid.org/0000-0002-2766-2173","contributorId":231,"corporation":false,"usgs":true,"family":"Usery","given":"E.","email":"usery@usgs.gov","middleInitial":"Lynn","affiliations":[{"id":423,"text":"National Geospatial Program","active":true,"usgs":true}],"preferred":true,"id":294210,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Finn, Michael P. 0000-0003-0415-2194 mfinn@usgs.gov","orcid":"https://orcid.org/0000-0003-0415-2194","contributorId":2657,"corporation":false,"usgs":true,"family":"Finn","given":"Michael","email":"mfinn@usgs.gov","middleInitial":"P.","affiliations":[{"id":5047,"text":"NGTOC Denver","active":true,"usgs":true},{"id":5074,"text":"Center for Geospatial Information Science (CEGIS)","active":true,"usgs":true}],"preferred":true,"id":294211,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":81044,"text":"ds318 - 2007 - ASTER-Derived 30-Meter-Resolution Digital Elevation Models of Afghanistan","interactions":[],"lastModifiedDate":"2021-08-24T12:18:49.117255","indexId":"ds318","displayToPublicDate":"2008-03-25T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":310,"text":"Data Series","code":"DS","onlineIssn":"2327-638X","printIssn":"2327-0271","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"318","title":"ASTER-Derived 30-Meter-Resolution Digital Elevation Models of Afghanistan","docAbstract":"INTRODUCTION\r\n\r\nThe Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is an imaging instrument aboard the Terra satellite, launched on December 19, 1999, as part of the National Aeronautics and Space Administration's (NASA) Earth Observing System (EOS). The ASTER sensor consists of three subsystems: the visible and near infrared (VNIR), the shortwave infrared (SWIR), and the thermal infrared (TIR), each with a different spatial resolution (VNIR, 15 meters; SWIR, 30 meters, TIR 90 meters). The VNIR system has the capability to generate along-track stereo images that can be used to create digital elevation models (DEMs) at 30-meter resolution.\r\n\r\nCurrently, the only available DEM dataset for Afghanistan is the 90-meter-resolution Shuttle Radar Topography Mission (SRTM) data. This dataset is appropriate for macroscale DEM analysis and mapping. However, ASTER provides a low cost opportunity to generate higher resolution data. For this publication, study areas were identified around populated areas and areas where higher resolution elevation data were desired to assist in natural resource assessments. The higher resolution fidelity of these DEMs can also be used for other terrain analysis including landform classification and geologic structure analysis.\r\n\r\nFor this publication, ASTER scenes were processed and mosaicked to generate 36 DEMs which were created and extracted using PCI Geomatics' OrthoEngine 3D Stereo software. The ASTER images were geographically registered to Landsat data with at least 15 accurate and well distributed ground control points with a root mean square error (RMSE) of less that one pixel (15 meters). An elevation value was then assigned to each ground control point by extracting the elevation from the 90-meter SRTM data. The 36 derived DEMs demonstrate that the software correlated on nearly flat surfaces and smooth slopes accurately. Larger errors occur in cloudy and snow-covered areas, lakes, areas with steep slopes, and southeastern-facing slopes. In these areas, holes, large pits, and spikes were generated by the software during the correlation process and the automatic interpolation method. To eliminate these problems, overlapping DEMs were generated and filtered using a progressive morphologic filter.\r\n\r\nThe quadrangles used to delineate the DEMs in the publication were derived from the Afghan Geodesy and Cartography Head Office's (AGCHO) 1:100,000-scale maps series quadrangles. Each DEM was clipped and assigned a name according to the associated AGCHO quadrangle name. The geospatial data included in this publication are intended to be used with any GIS software packages including, but not limited to, ESRI's ArcGIS and ERDAS IMAGINE.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ds318","usgsCitation":"Chirico, P., and Warner, M.B., 2007, ASTER-Derived 30-Meter-Resolution Digital Elevation Models of Afghanistan: U.S. Geological Survey Data Series 318, Available online and on DVD-ROM, https://doi.org/10.3133/ds318.","productDescription":"Available online and on DVD-ROM","onlineOnly":"N","additionalOnlineFiles":"Y","costCenters":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":195281,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":10906,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/ds/318/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b14e4b07f02db6a477a","contributors":{"authors":[{"text":"Chirico, Peter G.","contributorId":27086,"corporation":false,"usgs":true,"family":"Chirico","given":"Peter G.","affiliations":[],"preferred":false,"id":294207,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Warner, Michael B.","contributorId":26767,"corporation":false,"usgs":true,"family":"Warner","given":"Michael","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":294206,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}