{"pageNumber":"197","pageRowStart":"4900","pageSize":"25","recordCount":11004,"records":[{"id":70037560,"text":"70037560 - 2010 - Mapping irrigated lands at 250-m scale by merging MODIS data and National Agricultural Statistics","interactions":[],"lastModifiedDate":"2013-03-04T14:11:43","indexId":"70037560","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3250,"text":"Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Mapping irrigated lands at 250-m scale by merging MODIS data and National Agricultural Statistics","docAbstract":"Accurate geospatial information on the extent of irrigated land improves our understanding of agricultural water use, local land surface processes, conservation or depletion of water resources, and components of the hydrologic budget. We have developed a method in a geospatial modeling framework that assimilates irrigation statistics with remotely sensed parameters describing vegetation growth conditions in areas with agricultural land cover to spatially identify irrigated lands at 250-m cell size across the conterminous United States for 2002. The geospatial model result, known as the Moderate Resolution Imaging Spectroradiometer (MODIS) Irrigated Agriculture Dataset (MIrAD-US), identified irrigated lands with reasonable accuracy in California and semiarid Great Plains states with overall accuracies of 92% and 75% and kappa statistics of 0.75 and 0.51, respectively. A quantitative accuracy assessment of MIrAD-US for the eastern region has not yet been conducted, and qualitative assessment shows that model improvements are needed for the humid eastern regions where the distinction in annual peak NDVI between irrigated and non-irrigated crops is minimal and county sizes are relatively small. This modeling approach enables consistent mapping of irrigated lands based upon USDA irrigation statistics and should lead to better understanding of spatial trends in irrigated lands across the conterminous United States. An improved version of the model with revised datasets is planned and will employ 2007 USDA irrigation statistics.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Remote Sensing","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3390/rs2102388","issn":"20724292","usgsCitation":"Pervez, M., and Brown, J., 2010, Mapping irrigated lands at 250-m scale by merging MODIS data and National Agricultural Statistics: Remote Sensing, v. 2, no. 10, p. 2388-2412, https://doi.org/10.3390/rs2102388.","productDescription":"25 p.","startPage":"2388","endPage":"2412","numberOfPages":"25","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":475793,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.3390/rs2102388","text":"Publisher Index Page"},{"id":245932,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217959,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3390/rs2102388"}],"volume":"2","issue":"10","noUsgsAuthors":false,"publicationDate":"2010-10-19","publicationStatus":"PW","scienceBaseUri":"505a505ee4b0c8380cd6b657","contributors":{"authors":[{"text":"Pervez, Md Shahriar 0000-0003-3417-1871 shahriar.pervez.ctr@usgs.gov","orcid":"https://orcid.org/0000-0003-3417-1871","contributorId":74230,"corporation":false,"usgs":true,"family":"Pervez","given":"Md Shahriar","email":"shahriar.pervez.ctr@usgs.gov","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":false,"id":461601,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Brown, Jesslyn F. 0000-0002-9976-1998","orcid":"https://orcid.org/0000-0002-9976-1998","contributorId":85123,"corporation":false,"usgs":true,"family":"Brown","given":"Jesslyn F.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":461602,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70037563,"text":"70037563 - 2010 - The thermal regime in the resurgent dome of Long Valley Caldera, California: Inferences from precision temperature logs in deep wells","interactions":[],"lastModifiedDate":"2012-03-12T17:22:00","indexId":"70037563","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"The thermal regime in the resurgent dome of Long Valley Caldera, California: Inferences from precision temperature logs in deep wells","docAbstract":"Long Valley Caldera in eastern California formed 0.76Ma ago in a cataclysmic eruption that resulted in the deposition of 600km3 of Bishop Tuff. The total current heat flow from the caldera floor is estimated to be ~290MW, and a geothermal power plant in Casa Diablo on the flanks of the resurgent dome (RD) generates ~40MWe. The RD in the center of the caldera was uplifted by ~80cm between 1980 and 1999 and was explained by most models as a response to magma intrusion into the shallow crust. This unrest has led to extensive research on geothermal resources and volcanic hazards in the caldera. Here we present results from precise, high-resolution, temperature-depth profiles in five deep boreholes (327-1,158m) on the RD to assess its thermal state, and more specifically 1) to provide bounds on the advective heat transport as a guide for future geothermal exploration, 2) to provide constraints on the occurrence of magma at shallow crustal depths, and 3) to provide a baseline for future transient thermal phenomena in response to large earthquakes, volcanic activity, or geothermal production. The temperature profiles display substantial non-linearity within each profile and variability between the different profiles. All profiles display significant temperature reversals with depth and temperature gradients <50??C/km at their bottom. The maximum temperature in the individual boreholes ranges between 124.7??C and 129.5??C and bottom hole temperatures range between 99.4??C and 129.5??C. The high-temperature units in the three Fumarole Valley boreholes are at the approximate same elevation as the high-temperature unit in borehole M-1 in Casa Diablo indicating lateral or sub-lateral hydrothermal flow through the resurgent dome. Small differences in temperature between measurements in consecutive years in three of the wells suggest slow cooling of the shallow hydrothermal flow system. By matching theoretical curves to segments of the measured temperature profiles, we calculate horizontal groundwater velocities in the hydrothermal flow unit under the RD that range from 1.9 to 2.8m/yr, which corresponds to a maximum power flowing through the RD of 3-4MW. The relatively low temperatures and large isothermal segments at the bottom of the temperature profiles are inconsistent with the presence of magma at shallow crustal levels. ?? 2010.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Volcanology and Geothermal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jvolgeores.2010.08.023","issn":"03770273","usgsCitation":"Hurwitz, S., Farrar, C.D., and Williams, C., 2010, The thermal regime in the resurgent dome of Long Valley Caldera, California: Inferences from precision temperature logs in deep wells: Journal of Volcanology and Geothermal Research, v. 198, no. 1-2, p. 233-240, https://doi.org/10.1016/j.jvolgeores.2010.08.023.","startPage":"233","endPage":"240","numberOfPages":"8","costCenters":[],"links":[{"id":217973,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jvolgeores.2010.08.023"},{"id":245946,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"198","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb0f7e4b08c986b32516f","contributors":{"authors":[{"text":"Hurwitz, S.","contributorId":61110,"corporation":false,"usgs":true,"family":"Hurwitz","given":"S.","email":"","affiliations":[],"preferred":false,"id":461610,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Farrar, C. D.","contributorId":71978,"corporation":false,"usgs":true,"family":"Farrar","given":"C.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":461611,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Williams, C.F. 0000-0003-2196-5496","orcid":"https://orcid.org/0000-0003-2196-5496","contributorId":20401,"corporation":false,"usgs":true,"family":"Williams","given":"C.F.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":461609,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70037571,"text":"70037571 - 2010 - Probabilistic seismic hazard estimates incorporating site effects - An example from Indiana, U.S.A","interactions":[],"lastModifiedDate":"2012-03-12T17:22:06","indexId":"70037571","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1574,"text":"Environmental & Engineering Geoscience","printIssn":"1078-7275","active":true,"publicationSubtype":{"id":10}},"title":"Probabilistic seismic hazard estimates incorporating site effects - An example from Indiana, U.S.A","docAbstract":"The U.S. Geological Survey (USGS) has published probabilistic earthquake hazard maps for the United States based on current knowledge of past earthquake activity and geological constraints on earthquake potential. These maps for the central and eastern United States assume standard site conditions with Swave velocities of 760 m/s in the top 30 m. For urban and infrastructure planning and long-term budgeting, the public is interested in similar probabilistic seismic hazard maps that take into account near-surface geological materials. We have implemented a probabilistic method for incorporating site effects into the USGS seismic hazard analysis that takes into account the first-order effects of the surface geologic conditions. The thicknesses of sediments, which play a large role in amplification, were derived from a P-wave refraction database with over 13, 000 profiles, and a preliminary geology-based velocity model was constructed from available information on S-wave velocities. An interesting feature of the preliminary hazard maps incorporating site effects is the approximate factor of two increases in the 1-Hz spectral acceleration with 2 percent probability of exceedance in 50 years for parts of the greater Indianapolis metropolitan region and surrounding parts of central Indiana. This effect is primarily due to the relatively thick sequence of sediments infilling ancient bedrock topography that has been deposited since the Pleistocene Epoch. As expected, the Late Pleistocene and Holocene depositional systems of the Wabash and Ohio Rivers produce additional amplification in the southwestern part of Indiana. Ground motions decrease, as would be expected, toward the bedrock units in south-central Indiana, where motions are significantly lower than the values on the USGS maps.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental and Engineering Geoscience","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2113/gseegeosci.16.4.369","issn":"10787275","usgsCitation":"Hasse, J., Park, C., Nowack, R., and Hill, J., 2010, Probabilistic seismic hazard estimates incorporating site effects - An example from Indiana, U.S.A: Environmental & Engineering Geoscience, v. 16, no. 4, p. 369-388, https://doi.org/10.2113/gseegeosci.16.4.369.","startPage":"369","endPage":"388","numberOfPages":"20","costCenters":[],"links":[{"id":218033,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2113/gseegeosci.16.4.369"},{"id":246010,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"16","issue":"4","noUsgsAuthors":false,"publicationDate":"2010-10-26","publicationStatus":"PW","scienceBaseUri":"505a8c9ce4b0c8380cd7e7b3","contributors":{"authors":[{"text":"Hasse, J.S.","contributorId":77779,"corporation":false,"usgs":true,"family":"Hasse","given":"J.S.","affiliations":[],"preferred":false,"id":461670,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Park, C.H.","contributorId":24606,"corporation":false,"usgs":true,"family":"Park","given":"C.H.","email":"","affiliations":[],"preferred":false,"id":461668,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nowack, R.L.","contributorId":78594,"corporation":false,"usgs":true,"family":"Nowack","given":"R.L.","affiliations":[],"preferred":false,"id":461671,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hill, J.R.","contributorId":40834,"corporation":false,"usgs":true,"family":"Hill","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":461669,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70037595,"text":"70037595 - 2010 - Shallow magma accumulation at Kīlauea Volcano, Hawai‘i, revealed by microgravity surveys","interactions":[],"lastModifiedDate":"2019-11-12T14:48:06","indexId":"70037595","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Shallow magma accumulation at Kīlauea Volcano, Hawai‘i, revealed by microgravity surveys","docAbstract":"

Using microgravity data collected at Kīlauea Volcano, Hawai‘i (United States), between November 1975 and January 2008, we document significant mass increase beneath the east margin of Halema‘uma‘u Crater, within Kīlauea's summit caldera. Surprisingly, there was no sustained uplift accompanying the mass accumulation. We propose that the positive gravity residual in the absence of significant uplift is indicative of magma accumulation in void space (probably a network of interconnected cracks), which may have been created when magma withdrew from the summit in response to the 29 November 1975 M = 7.2 south flank earthquake. Subsequent refilling documented by gravity represents a gradual recovery from that earthquake. A new eruptive vent opened at the summit of Kīlauea in 2008 within a few hundred meters of the positive gravity residual maximum, probably tapping the reservoir that had been accumulating magma since the 1975 earthquake.

","language":"English","publisher":"Geological Society of America","doi":"10.1130/G31323.1","issn":"00917613","usgsCitation":"Johnson, D., Eggers, A.A., Bagnardi, M., Battaglia, M., Poland, M., and Miklius, A., 2010, Shallow magma accumulation at Kīlauea Volcano, Hawai‘i, revealed by microgravity surveys: Geology, v. 38, no. 12, p. 1139-1142, https://doi.org/10.1130/G31323.1.","productDescription":"4 p.","startPage":"1139","endPage":"1142","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":245964,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217989,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G31323.1"}],"country":"United States","state":"Hawaii","otherGeospatial":"Kilauea Volcano","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -155.29037475585938,\n 19.25216359015986\n ],\n [\n -155.25466918945312,\n 19.25929414046391\n ],\n [\n -155.24574279785156,\n 19.25929414046391\n ],\n [\n -155.21896362304688,\n 19.24957058592488\n ],\n [\n -155.19287109375,\n 19.24632927300332\n ],\n [\n -155.1393127441406,\n 19.26123878219602\n ],\n [\n -155.10635375976562,\n 19.283924564443133\n ],\n [\n -155.05760192871094,\n 19.30660720441715\n ],\n [\n -155.00885009765625,\n 19.326046963894623\n ],\n [\n -155.02120971679688,\n 19.362976133341846\n ],\n [\n -155.0335693359375,\n 19.385647795879144\n ],\n [\n -155.05966186523438,\n 19.405725775580528\n ],\n [\n -155.11734008789062,\n 19.44393185624604\n ],\n [\n -155.21827697753906,\n 19.41867799583191\n ],\n [\n -155.22720336914062,\n 19.41414483611448\n ],\n [\n -155.26634216308594,\n 19.35714576748661\n ],\n [\n -155.28488159179688,\n 19.31308738110667\n ],\n [\n -155.29861450195312,\n 19.270961644869896\n ],\n [\n -155.29037475585938,\n 19.25216359015986\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"38","issue":"12","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8e32e4b08c986b3187b2","contributors":{"authors":[{"text":"Johnson, Daniel J.","contributorId":71970,"corporation":false,"usgs":true,"family":"Johnson","given":"Daniel J.","affiliations":[],"preferred":false,"id":461836,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eggers, Albert A.","contributorId":9552,"corporation":false,"usgs":true,"family":"Eggers","given":"Albert","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":461838,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bagnardi, Marco","contributorId":62106,"corporation":false,"usgs":true,"family":"Bagnardi","given":"Marco","affiliations":[],"preferred":false,"id":461834,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Battaglia, Maurizio","contributorId":32602,"corporation":false,"usgs":true,"family":"Battaglia","given":"Maurizio","affiliations":[],"preferred":false,"id":461835,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Poland, Michael P. 0000-0001-5240-6123 mpoland@usgs.gov","orcid":"https://orcid.org/0000-0001-5240-6123","contributorId":635,"corporation":false,"usgs":true,"family":"Poland","given":"Michael P.","email":"mpoland@usgs.gov","affiliations":[{"id":336,"text":"Hawaiian Volcano Observatory","active":false,"usgs":true}],"preferred":false,"id":461839,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Miklius, Asta 0000-0002-2286-1886 asta@usgs.gov","orcid":"https://orcid.org/0000-0002-2286-1886","contributorId":2060,"corporation":false,"usgs":true,"family":"Miklius","given":"Asta","email":"asta@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":461837,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70037617,"text":"70037617 - 2010 - Sedimentary basins reconnaissance using the magnetic Tilt-Depth method","interactions":[],"lastModifiedDate":"2012-03-12T17:22:00","indexId":"70037617","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1612,"text":"Exploration Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Sedimentary basins reconnaissance using the magnetic Tilt-Depth method","docAbstract":"We compute the depth to the top of magnetic basement using the Tilt-Depth method from the best available magnetic anomaly grids covering the continental USA and Australia. For the USA, the Tilt-Depth estimates were compared with sediment thicknesses based on drilling data and show a correlation of 0.86 between the datasets. If random data were used then the correlation value goes to virtually zero. There is little to no lateral offset of the depth of basinal features although there is a tendency for the Tilt-Depth results to be slightly shallower than the drill depths. We also applied the Tilt-Depth method to a local-scale, relatively high-resolution aeromagnetic survey over the Olympic Peninsula of Washington State. The Tilt-Depth method successfully identified a variety of important tectonic elements known from geological mapping. Of particular interest, the Tilt-Depth method illuminated deep (3km) contacts within the non-magnetic sedimentary core of the Olympic Mountains, where magnetic anomalies are subdued and low in amplitude. For Australia, the Tilt-Depth estimates also give a good correlation with known areas of shallow basement and sedimentary basins. Our estimates of basement depth are not restricted to regional analysis but work equally well at the micro scale (basin scale) with depth estimates agreeing well with drill hole and seismic data. We focus on the eastern Officer Basin as an example of basin scale studies and find a good level of agreement between previously-derived basin models. However, our study potentially reveals depocentres not previously mapped due to the sparse distribution of well data. This example thus shows the potential additional advantage of the method in geological interpretation. The success of this study suggests that the Tilt-Depth method is useful in estimating the depth to crystalline basement when appropriate quality aeromagnetic anomaly data are used (i.e. line spacing on the order of or less than the expected depth to basement). The method is especially valuable as a reconnaissance tool in regions where drillhole or seismic information are either scarce, lacking, or ambiguous.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Exploration Geophysics","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1071/EG10007","issn":"08123985","usgsCitation":"Salem, A., Williams, S., Samson, E., Fairhead, D., Ravat, D., and Blakely, R., 2010, Sedimentary basins reconnaissance using the magnetic Tilt-Depth method: Exploration Geophysics, v. 41, no. 3, p. 198-209, https://doi.org/10.1071/EG10007.","startPage":"198","endPage":"209","numberOfPages":"12","costCenters":[],"links":[{"id":245881,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217908,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1071/EG10007"}],"volume":"41","issue":"3","noUsgsAuthors":false,"publicationDate":"2018-12-06","publicationStatus":"PW","scienceBaseUri":"505b8a15e4b08c986b317011","contributors":{"authors":[{"text":"Salem, A.","contributorId":47604,"corporation":false,"usgs":true,"family":"Salem","given":"A.","email":"","affiliations":[],"preferred":false,"id":461937,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Williams, S.","contributorId":18514,"corporation":false,"usgs":true,"family":"Williams","given":"S.","email":"","affiliations":[],"preferred":false,"id":461936,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Samson, E.","contributorId":105569,"corporation":false,"usgs":true,"family":"Samson","given":"E.","email":"","affiliations":[],"preferred":false,"id":461940,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fairhead, D.","contributorId":106352,"corporation":false,"usgs":true,"family":"Fairhead","given":"D.","email":"","affiliations":[],"preferred":false,"id":461941,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ravat, D.","contributorId":102971,"corporation":false,"usgs":true,"family":"Ravat","given":"D.","email":"","affiliations":[],"preferred":false,"id":461939,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Blakely, R.J. 0000-0003-1701-5236","orcid":"https://orcid.org/0000-0003-1701-5236","contributorId":70755,"corporation":false,"usgs":true,"family":"Blakely","given":"R.J.","affiliations":[],"preferred":false,"id":461938,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70037639,"text":"70037639 - 2010 - Landscape characteristics affecting streams in urbanizing regions of the Delaware River Basin (New Jersey, New York, and Pennsylvania, U.S.)","interactions":[],"lastModifiedDate":"2012-03-12T17:22:03","indexId":"70037639","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2602,"text":"Landscape Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Landscape characteristics affecting streams in urbanizing regions of the Delaware River Basin (New Jersey, New York, and Pennsylvania, U.S.)","docAbstract":"Widespread and increasing urbanization has resulted in the need to assess, monitor, and understand its effects on stream water quality. Identifying relations between stream ecological condition and urban intensity indicators such as impervious surface provides important, but insufficient information to effectively address planning and management needs in such areas. In this study we investigate those specific landscape metrics which are functionally linked to indicators of stream ecological condition, and in particular, identify those characteristics that exacerbate or mitigate changes in ecological condition over and above impervious surface. The approach used addresses challenges associated with redundancy of landscape metrics, and links landscape pattern and composition to an indicator of stream ecological condition across a broad area of the eastern United States. Macroinvertebrate samples were collected during 2000-2001 from forty-two sites in the Delaware River Basin, and landscape data of high spatial and thematic resolution were obtained from photointerpretation of 1999 imagery. An ordination-derived 'biotic score' was positively correlated with assemblage tolerance, and with urban-related chemical characteristics such as chloride concentration and an index of potential pesticide toxicity. Impervious surface explained 56% of the variation in biotic score, but the variation explained increased to as high as 83% with the incorporation of a second land use, cover, or configuration metric at catchment or riparian scales. These include land use class-specific cover metrics such as percent of urban land with tree cover, forest fragmentation metrics such as aggregation index, riparian metrics such as percent tree cover, and metrics related to urban aggregation. Study results indicate that these metrics will be important to monitor in urbanizing areas in addition to impervious surface. ?? 2010 US Government.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Landscape Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10980-010-9513-y","issn":"09212973","usgsCitation":"Riva-Murray, K., Riemann, R., Murdoch, P., Fischer, J., and Brightbill, R., 2010, Landscape characteristics affecting streams in urbanizing regions of the Delaware River Basin (New Jersey, New York, and Pennsylvania, U.S.): Landscape Ecology, v. 25, no. 10, p. 1489-1503, https://doi.org/10.1007/s10980-010-9513-y.","startPage":"1489","endPage":"1503","numberOfPages":"15","costCenters":[],"links":[{"id":218078,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10980-010-9513-y"},{"id":246059,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"25","issue":"10","noUsgsAuthors":false,"publicationDate":"2010-09-01","publicationStatus":"PW","scienceBaseUri":"505a4400e4b0c8380cd66781","contributors":{"authors":[{"text":"Riva-Murray, K.","contributorId":82481,"corporation":false,"usgs":true,"family":"Riva-Murray","given":"K.","affiliations":[],"preferred":false,"id":462037,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Riemann, R.","contributorId":44396,"corporation":false,"usgs":true,"family":"Riemann","given":"R.","affiliations":[],"preferred":false,"id":462035,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Murdoch, P.","contributorId":40457,"corporation":false,"usgs":true,"family":"Murdoch","given":"P.","email":"","affiliations":[],"preferred":false,"id":462034,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fischer, J.M. 0000-0003-2996-9272","orcid":"https://orcid.org/0000-0003-2996-9272","contributorId":74419,"corporation":false,"usgs":true,"family":"Fischer","given":"J.M.","affiliations":[],"preferred":false,"id":462036,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Brightbill, R.","contributorId":87788,"corporation":false,"usgs":true,"family":"Brightbill","given":"R.","email":"","affiliations":[],"preferred":false,"id":462038,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70037657,"text":"70037657 - 2010 - Effects of exploitation on black bear populations at White River National Wildlife Refuge","interactions":[],"lastModifiedDate":"2016-04-13T16:23:57","indexId":"70037657","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Effects of exploitation on black bear populations at White River National Wildlife Refuge","docAbstract":"

We live-trapped American black bears (Ursus americanus) and sampled DNA from hair at White River National Wildlife Refuge, Arkansas, USA, to estimate annual population size (N), growth (λ), and density. We estimated N and λ with open population models, based on live-trapping data collected from 1998 through 2006, and robust design models for genotyped hair samples collected from 2004 through 2007. Population growth was weakly negative (i.e., 95% CI included 1.0) for males (0.901, 95% CI  =  0.645–1.156) and strongly negative (i.e., 95% CI excluded 1.0) for females (0.846, 95% CI  =  0.711–0.981), based on live-trapping data, with N from 1999 to 2006 ranging from 94.1 (95% CI  =  70.3–137.1) to 45.2 (95% CI  =  27.1–109.3), respectively, for males and from 151.4 (95% CI  =  127.6–185.8) to 47.1 (95% CI  =  24.4–140.4), respectively, for females. Likewise, mean annual λ based on hair-sampling data was weakly negative for males (0.742, 95% CI  =  0.043–1.441) and strongly negative for females (0.782, 95% CI  =  0.661–0.903), with abundance estimates from 2004 to 2007 ranging from 29.1 (95% CI  =  21.2–65.8) to 11.9 (95% CI  =  11.0–26.9), respectively, for males and from 54.4 (95% CI  =  44.3–77.1) to 27.4 (95% CI  = 24.9–36.6), respectively, for females. We attribute the decline in the number of females in this isolated population to a decrease in survival caused by a past translocation program and by hunting adjacent to the refuge. We suggest that managers restructure the quota-based harvest limits until these growth rates recover.

","language":"English","publisher":"Wildlife Society","doi":"10.2193/2009-529","issn":"0022541X","usgsCitation":"Clark, J.D., Eastridge, R., and Hooker, M., 2010, Effects of exploitation on black bear populations at White River National Wildlife Refuge: Journal of Wildlife Management, v. 74, no. 7, p. 1448-1456, https://doi.org/10.2193/2009-529.","startPage":"1448","endPage":"1456","numberOfPages":"9","costCenters":[],"links":[{"id":245938,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217965,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/2009-529"}],"country":"United States","state":"Arkansas","otherGeospatial":"White River National Wildlife Refuge","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -91.27716064453125,\n 34.67161743636362\n ],\n [\n -91.25244140624999,\n 34.610605760914666\n ],\n [\n -91.1590576171875,\n 34.55407346090556\n ],\n [\n -91.16455078125,\n 34.511083202999714\n ],\n [\n -91.0382080078125,\n 34.4069096565206\n ],\n [\n -90.99426269531249,\n 34.39104576945997\n ],\n [\n -91.02996826171875,\n 34.15045403191448\n ],\n [\n -91.0272216796875,\n 34.10498222546687\n ],\n [\n -91.065673828125,\n 34.03672867489511\n ],\n [\n -91.0601806640625,\n 34.00258128543371\n ],\n [\n -91.0931396484375,\n 33.970697997361626\n ],\n [\n -91.11785888671875,\n 33.959308210392024\n ],\n [\n -91.1590576171875,\n 33.96386430820156\n ],\n [\n -91.1920166015625,\n 33.99347299511967\n ],\n [\n -91.22222900390625,\n 34.048108084909835\n ],\n [\n -91.19476318359375,\n 34.129994745824746\n ],\n [\n -91.21673583984375,\n 34.14136162745489\n ],\n [\n -91.25518798828125,\n 34.2594865145062\n ],\n [\n -91.23321533203125,\n 34.29579932143427\n ],\n [\n -91.19476318359375,\n 34.288991865037524\n ],\n [\n -91.17279052734375,\n 34.332096438353915\n ],\n [\n -91.18377685546875,\n 34.384246040152206\n ],\n [\n -91.22772216796875,\n 34.40917568058836\n ],\n [\n -91.27716064453125,\n 34.46127728843708\n ],\n [\n -91.33209228515625,\n 34.54502472496434\n ],\n [\n -91.395263671875,\n 34.6015631772409\n ],\n [\n -91.38702392578125,\n 34.66258150231496\n ],\n [\n -91.33209228515625,\n 34.68291096793206\n ],\n [\n -91.27716064453125,\n 34.67161743636362\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"74","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a06e8e4b0c8380cd51490","contributors":{"authors":[{"text":"Clark, J. D.","contributorId":85911,"corporation":false,"usgs":true,"family":"Clark","given":"J.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":462153,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Eastridge, R.","contributorId":46464,"corporation":false,"usgs":true,"family":"Eastridge","given":"R.","affiliations":[],"preferred":false,"id":462152,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hooker, M.J.","contributorId":86204,"corporation":false,"usgs":true,"family":"Hooker","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":462154,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70042347,"text":"70042347 - 2010 - Caution on the use of liquid nitrogen traps in stable hydrogen isotope-ratio mass spectrometry","interactions":[],"lastModifiedDate":"2018-10-11T10:23:51","indexId":"70042347","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":761,"text":"Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Caution on the use of liquid nitrogen traps in stable hydrogen isotope-ratio mass spectrometry","docAbstract":"

An anomalous stable hydrogen isotopic fractionation of 4 ‰ in gaseous hydrogen has been correlated with the process of adding liquid nitrogen (LN2) to top off the dewar of a stainless-steel water trap on a gaseous hydrogen-water platinum equilibration system. Although the cause of this isotopic fractionation is unknown, its effect can be mitigated by (1) increasing the capacity of any dewars so that they do not need to be filled during a daily analytic run, (2) interspersing isotopic reference waters among unknowns, and (3) applying a linear drift correction and linear normalization to isotopic results with a program such as Laboratory Information Management System (LIMS) for Light Stable Isotopes. With adoption of the above guidelines, measurement uncertainty can be substantially improved. For example, the long-term (months to years) δ2H reproducibility (1& sigma; standard deviation) of nine local isotopic reference waters analyzed daily improved substantially from about 1‰ to 0.58 ‰. This isotopically fractionating mechanism might affect other isotope-ratio mass spectrometers in which LN2 is used as a moisture trap for gaseous hydrogen

","language":"English","publisher":"ACS Publications","publisherLocation":"Washington, D.C.","doi":"10.1021/ac101570f","usgsCitation":"Coplen, T.B., and Qi, H., 2010, Caution on the use of liquid nitrogen traps in stable hydrogen isotope-ratio mass spectrometry: Analytical Chemistry, v. 82, no. 18, p. 7849-7851, https://doi.org/10.1021/ac101570f.","productDescription":"3 p.","startPage":"7849","endPage":"7851","ipdsId":"IP-020415","costCenters":[{"id":146,"text":"Branch of Regional Research-Eastern Region","active":false,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":265316,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":265271,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/ac101570f"}],"country":"United States","volume":"82","issue":"18","noUsgsAuthors":false,"publicationDate":"2010-08-18","publicationStatus":"PW","scienceBaseUri":"50ebfc76e4b07f1501afcfcb","contributors":{"authors":[{"text":"Coplen, Tyler B. 0000-0003-4884-6008 tbcoplen@usgs.gov","orcid":"https://orcid.org/0000-0003-4884-6008","contributorId":508,"corporation":false,"usgs":true,"family":"Coplen","given":"Tyler","email":"tbcoplen@usgs.gov","middleInitial":"B.","affiliations":[{"id":37464,"text":"WMA - Laboratory & Analytical Services Division","active":true,"usgs":true},{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":471357,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Qi, Haiping 0000-0002-8339-744X haipingq@usgs.gov","orcid":"https://orcid.org/0000-0002-8339-744X","contributorId":507,"corporation":false,"usgs":true,"family":"Qi","given":"Haiping","email":"haipingq@usgs.gov","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":471356,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70042429,"text":"70042429 - 2010 - Studies from the history of soil science and geology","interactions":[],"lastModifiedDate":"2013-05-07T15:06:51","indexId":"70042429","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3069,"text":"Physics and Chemistry of the Earth, Parts A/B/C","active":true,"publicationSubtype":{"id":10}},"title":"Studies from the history of soil science and geology","docAbstract":"The United Nations proclaimed the year 2008 as the official International Year of Planet Earth (IYPE), with science and outreach activities spanning 2007–2009. IYPE-sponsored outreach helped focus the attention of the general public on topics such as human health and the environment; ocean and natural resources sustainability; mitigating natural hazards and community resilience; and the effects of climate change. Within the earth science community, the IYPE was a stimulus for retrospection, and for efforts aimed at bridging divides within the community. One such effort was the first joint meeting of the Geological Society of America (GSA) and the Soil Science Society of America (SSSA), held in Houston, Texas, 5–9 October 2008.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Physics and Chemistry of the Earth, Parts A/B/C","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.pce.2010.10.005","usgsCitation":"Landa, E.R., and Cohen, B.R., 2010, Studies from the history of soil science and geology: Physics and Chemistry of the Earth, Parts A/B/C, v. 35, no. 15-18, p. 849-850, https://doi.org/10.1016/j.pce.2010.10.005.","productDescription":"2 p.","startPage":"849","endPage":"850","numberOfPages":"2","ipdsId":"IP-024226","costCenters":[{"id":146,"text":"Branch of Regional Research-Eastern Region","active":false,"usgs":true}],"links":[{"id":272041,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":272040,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.pce.2010.10.005"}],"country":"United States","volume":"35","issue":"15-18","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"518a227be4b061e1bd5334d6","contributors":{"authors":[{"text":"Landa, Edward R. erlanda@usgs.gov","contributorId":2112,"corporation":false,"usgs":true,"family":"Landa","given":"Edward","email":"erlanda@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":471513,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cohen, Benjamin R.","contributorId":35629,"corporation":false,"usgs":true,"family":"Cohen","given":"Benjamin","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":471514,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70043468,"text":"70043468 - 2010 - A review of the genus Agapetus Curtis (Trichoptera: Glossosomatidae) in eastern and central North America, with description of 12 new species","interactions":[],"lastModifiedDate":"2016-08-24T12:10:35","indexId":"70043468","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2005,"text":"Insecta Mundi","active":true,"publicationSubtype":{"id":10}},"title":"A review of the genus Agapetus Curtis (Trichoptera: Glossosomatidae) in eastern and central North America, with description of 12 new species","docAbstract":"

Twenty-nine species of caddisflies in the genus Agapetus Curtis in eastern and central North America are reviewed. Twelve are described as new species: Agapetus aphallus (known only from females); Agapetus baueri, Agapetus flinti, Agapetus harrisi, Agapetus hesperus, Agapetus ibis, Agapetus kirchneri, Agapetus meridionalis, Agapetus pegram, Agapetus ruiteri, Agapetus stylifer, and Agapetus tricornutus. Agapetus rossi Denning 1941 is recognized as a junior subjective synonym of Agapetus walkeri (Betten and Mosely 1940), new synonym. A key to males is provided, and species’ distributions are mapped.

","language":"English","publisher":"Center for Systematic Entomology","usgsCitation":"Etnier, D.A., Parker, C.R., Baxter, J.T., and Long, T.M., 2010, A review of the genus Agapetus Curtis (Trichoptera: Glossosomatidae) in eastern and central North America, with description of 12 new species: Insecta Mundi, v. 149, 78 p.","productDescription":"78 p.","numberOfPages":"80","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-025162","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":271671,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":271669,"type":{"id":15,"text":"Index Page"},"url":"https://journals.fcla.edu/mundi/article/view/76210"}],"country":"Canada, United States","state":"Alabama, Arkansas, Connecticut, Georgia, Idaho, Illinois, Indiana, Kentucky, Maine, Massachusetts, Minnesota, Mississippi, Missouri, New Brunswick, New Hampshire, New York, North Carolina, Oklahoma, 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}","volume":"149","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5180e7e2e4b0df838b924d41","contributors":{"authors":[{"text":"Etnier, David A.","contributorId":88243,"corporation":false,"usgs":true,"family":"Etnier","given":"David","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":473658,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parker, Charles R. chuck_parker@usgs.gov","contributorId":4489,"corporation":false,"usgs":true,"family":"Parker","given":"Charles","email":"chuck_parker@usgs.gov","middleInitial":"R.","affiliations":[],"preferred":true,"id":473656,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baxter, John T. Jr.","contributorId":99021,"corporation":false,"usgs":true,"family":"Baxter","given":"John","suffix":"Jr.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":473659,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Long, Todd M.","contributorId":55307,"corporation":false,"usgs":true,"family":"Long","given":"Todd","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":473657,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70044497,"text":"70044497 - 2010 - Some notes on the geology of Cave Mountain Cave, Pendleton County, West Virginia","interactions":[],"lastModifiedDate":"2013-06-17T16:28:12","indexId":"70044497","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3586,"text":"The West Virginia Caver","active":true,"publicationSubtype":{"id":10}},"title":"Some notes on the geology of Cave Mountain Cave, Pendleton County, West Virginia","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"The West Virginia Caver","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"The West Virginia Caver","usgsCitation":"Swezey, C., and Dulong, F., 2010, Some notes on the geology of Cave Mountain Cave, Pendleton County, West Virginia: The West Virginia Caver, v. 28, no. 2, p. 5-10.","productDescription":"6","startPage":"5","endPage":"10","ipdsId":"IP-017954","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":273871,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"West Virginia","county":"Pendleton","otherGeospatial":"Cave Mountain Cave","volume":"28","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"51c02ff7e4b0ee1529ed3d68","contributors":{"authors":[{"text":"Swezey, C.S.","contributorId":83722,"corporation":false,"usgs":true,"family":"Swezey","given":"C.S.","email":"","affiliations":[],"preferred":false,"id":475730,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Dulong, F.T.","contributorId":81490,"corporation":false,"usgs":true,"family":"Dulong","given":"F.T.","affiliations":[],"preferred":false,"id":475729,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70034191,"text":"70034191 - 2010 - Mineralogical and chemical characteristics of some natural jarosites","interactions":[],"lastModifiedDate":"2018-10-29T10:52:43","indexId":"70034191","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1759,"text":"Geochimica et Cosmochimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Mineralogical and chemical characteristics of some natural jarosites","docAbstract":"

This paper presents a detailed study of the mineralogical, microscopic, thermal, and spectral characteristics of jarosite and natrojarosite minerals. Systematic mineralogic and chemical examination of a suite of 32 natural stoichiometric jarosite and natrojarosite samples from diverse supergene and hydrothermal environments indicates that there is only limited solid solution between Na and K at low temperatures, which suggests the presence of a solvus in the jarosite-natrojarosite system at temperatures below about 140 C. The samples examined in this study consist of either end members or coexisting end-member pairs of jarosite and natrojarosite. Quantitative electron-probe microanalysis data for several natural hydrothermal samples show only end-member compositions for individual grains or zones, and no detectable alkali-site deficiencies, which indicates that there is no hydronium substitution within the analytical uncertainty of the method. In addition, there is no evidence of Fe deficiencies in the natural hydrothermal samples. Hydronium-bearing jarosite was detected in only one relatively young supergene sample suggesting that terrestrial hydronium-bearing jarosites generally are unstable over geologic timescales.


Unit-cell parameters of the 20 natural stoichiometric jarosites and 12 natural stoichiometric natrojarosites examined in this study have distinct and narrow ranges in the a- and c-cell dimensions. There is no overlap of these parameters at the 1r level for the two end-member compositions. Several hydrothermal samples consist of fine-scale (2–10 lm) intimate intergrowths of jarosite and natrojarosite, which could have resulted from solid-state diffusion segregation or growth zoning due to variations in the Na/K activity ratio of hydrothermal solutions.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geochimica et Cosmochimica Acta","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.gca.2009.11.006","issn":"00167037","usgsCitation":"Desborough, G.A., Smith, K.S., Lowers, H.A., Swayze, G.A., Hammarstrom, J.M., Diehl, S.F., Leinz, R.W., and Driscoll, R.L., 2010, Mineralogical and chemical characteristics of some natural jarosites: Geochimica et Cosmochimica Acta, v. 74, no. 3, p. 1041-1056, https://doi.org/10.1016/j.gca.2009.11.006.","productDescription":"16 p.","startPage":"1041","endPage":"1056","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":244647,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":216760,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.gca.2009.11.006"}],"volume":"74","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5a90e4b0c8380cd6ef7a","contributors":{"authors":[{"text":"Desborough, George A.","contributorId":101661,"corporation":false,"usgs":true,"family":"Desborough","given":"George","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":444538,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Kathleen S. 0000-0001-8547-9804 ksmith@usgs.gov","orcid":"https://orcid.org/0000-0001-8547-9804","contributorId":182,"corporation":false,"usgs":true,"family":"Smith","given":"Kathleen","email":"ksmith@usgs.gov","middleInitial":"S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":444539,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lowers, Heather A. 0000-0001-5360-9264 hlowers@usgs.gov","orcid":"https://orcid.org/0000-0001-5360-9264","contributorId":191307,"corporation":false,"usgs":true,"family":"Lowers","given":"Heather","email":"hlowers@usgs.gov","middleInitial":"A.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":444536,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Swayze, Gregg A. 0000-0002-1814-7823 gswayze@usgs.gov","orcid":"https://orcid.org/0000-0002-1814-7823","contributorId":518,"corporation":false,"usgs":true,"family":"Swayze","given":"Gregg","email":"gswayze@usgs.gov","middleInitial":"A.","affiliations":[{"id":309,"text":"Geology and Geophysics Science Center","active":true,"usgs":true},{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":444535,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hammarstrom, Jane M. 0000-0003-2742-3460 jhammars@usgs.gov","orcid":"https://orcid.org/0000-0003-2742-3460","contributorId":1226,"corporation":false,"usgs":true,"family":"Hammarstrom","given":"Jane","email":"jhammars@usgs.gov","middleInitial":"M.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":444537,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Diehl, Sharon F. diehl@usgs.gov","contributorId":1089,"corporation":false,"usgs":true,"family":"Diehl","given":"Sharon","email":"diehl@usgs.gov","middleInitial":"F.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":444541,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Leinz, Reinhard W.","contributorId":60628,"corporation":false,"usgs":true,"family":"Leinz","given":"Reinhard","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":444542,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Driscoll, Rhonda L. 0000-0001-7725-8956 rdriscoll@usgs.gov","orcid":"https://orcid.org/0000-0001-7725-8956","contributorId":745,"corporation":false,"usgs":true,"family":"Driscoll","given":"Rhonda","email":"rdriscoll@usgs.gov","middleInitial":"L.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":444540,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70187016,"text":"70187016 - 2010 - Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i","interactions":[],"lastModifiedDate":"2017-04-19T10:02:29","indexId":"70187016","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":5,"text":"Book chapter"},"publicationSubtype":{"id":24,"text":"Book Chapter"},"title":"Interpreting canopy water balance and fog screen observations: separating cloud water from wind-blown rainfall at two contrasting forest sites in Hawai'i","docAbstract":"

No abstract available.

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This field trip examines the geology and geohydrology of a dissected part of the Salem Plateau in the Ozark Plateaus province of south-central Missouri. Rocks exposed in this area include karstified, flat-lying, lower Paleozoic carbonate platform rocks deposited on Mesoproterozoic basement. The latter is exposed as an uplift located about 40 mi southwest of the St. Francois Mountains and form the core of the Ozark dome. On day 1, participants will examine and explore major karst features developed in Paleozoic carbonate strata on the Current River; this will include Devil's Well and Round Spring Cavern as well as Montauk, Round, Alley, and Big Springs. The average discharge of the latter is 276 × 106 gpd and is rated in the top 20 springs in the world. Another, Alley Spring, is equally spectacular with an average discharge of 81 × 106 gpd. Both are major contributors to the Current and Eleven Point River drainage system which includes about 50 Mesoproterozoic volcanic knobs and two granite outcrops. These knobs are mainly caldera-erupted ignimbrites with a total thickness of 7–8 km. They are overlain by post-collapse lavas and intruded by domes dated at 1470 Ma. Volcaniclastic sediment and air-fall lapilli tuff are widely distributed along this synvolcanic unconformity. On day 2, the group will examine the most important volcanic features and the southernmost granite exposure in Missouri. The trip concludes with a discussion of the Missouri Gravity Low, the Eminence caldera, and the volcanic history of southern Missouri as well as a discussion of geologic controls on regional groundwater flow through this part of the Ozark aquifer.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"From Precambrian rift volcanoes to the Mississippian Shelf margin: Geological field excursions in the Ozark Mountains","largerWorkSubtype":{"id":15,"text":"Monograph"},"language":"English","publisher":"Geological Society of America","publisherLocation":"Boulder, Colo.","usgsCitation":"Harrison, R., Weary, D.J., Orndorff, R.C., Repetski, J.E., Pierce, H.A., and Lowell, G.R., 2010, Rift-related volcanism and karst geohydrology of the southern Ozark Dome, chap. of From Precambrian rift volcanoes to the Mississippian Shelf margin: Geological field excursions in the Ozark Mountains, p. 99-158.","productDescription":"60 p.","startPage":"99","endPage":"158","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-020395","costCenters":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"links":[{"id":309792,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Missouri","otherGeospatial":"Salem Plateau","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -89.53857421875,\n 37.24782120155428\n ],\n [\n -89.1650390625,\n 36.84446074079564\n ],\n [\n -91.38427734374999,\n 36.914764288955936\n ],\n [\n -91.34033203125,\n 37.16031654673677\n ],\n [\n -89.53857421875,\n 37.24782120155428\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"561793cfe4b0cdb063e3fb9a","contributors":{"editors":[{"text":"Evans, Kevin R.","contributorId":35724,"corporation":false,"usgs":true,"family":"Evans","given":"Kevin","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":577058,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Aber, James S.","contributorId":149141,"corporation":false,"usgs":false,"family":"Aber","given":"James","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":577059,"contributorType":{"id":2,"text":"Editors"},"rank":2}],"authors":[{"text":"Harrison, Richard W. rharriso@usgs.gov","contributorId":544,"corporation":false,"usgs":true,"family":"Harrison","given":"Richard W.","email":"rharriso@usgs.gov","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":577060,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Weary, David J. 0000-0002-6115-6397 dweary@usgs.gov","orcid":"https://orcid.org/0000-0002-6115-6397","contributorId":545,"corporation":false,"usgs":true,"family":"Weary","given":"David","email":"dweary@usgs.gov","middleInitial":"J.","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":577061,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"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":501,"text":"Office of Science Quality and Integrity","active":true,"usgs":true},{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":577062,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Repetski, John E. 0000-0002-2298-7120 jrepetski@usgs.gov","orcid":"https://orcid.org/0000-0002-2298-7120","contributorId":2596,"corporation":false,"usgs":true,"family":"Repetski","given":"John","email":"jrepetski@usgs.gov","middleInitial":"E.","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":577063,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Pierce, Herbert A. hpierce@usgs.gov","contributorId":5995,"corporation":false,"usgs":true,"family":"Pierce","given":"Herbert","email":"hpierce@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":false,"id":577064,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lowell, Gary R.","contributorId":149142,"corporation":false,"usgs":false,"family":"Lowell","given":"Gary","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":577065,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70146187,"text":"70146187 - 2010 - Three-dimensional benchmark for variable-density flow and transport simulation: matching semi-analytic stability modes for steady unstable convection in an inclined porous box","interactions":[],"lastModifiedDate":"2018-10-09T10:52:46","indexId":"70146187","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Three-dimensional benchmark for variable-density flow and transport simulation: matching semi-analytic stability modes for steady unstable convection in an inclined porous box","docAbstract":"

This benchmark for three-dimensional (3D) numerical simulators of variable-density groundwater flow and solute or energy transport consists of matching simulation results with the semi-analytical solution for the transition from one steady-state convective mode to another in a porous box. Previous experimental and analytical studies of natural convective flow in an inclined porous layer have shown that there are a variety of convective modes possible depending on system parameters, geometry and inclination. In particular, there is a well-defined transition from the helicoidal mode consisting of downslope longitudinal rolls superimposed upon an upslope unicellular roll to a mode consisting of purely an upslope unicellular roll. Three-dimensional benchmarks for variable-density simulators are currently (2009) lacking and comparison of simulation results with this transition locus provides an unambiguous means to test the ability of such simulators to represent steady-state unstable 3D variable-density physics.

","language":"English","publisher":"Springer","doi":"10.1007/s10040-009-0556-6","usgsCitation":"Voss, C.I., Simmons, C.T., and Robinson, N.I., 2010, Three-dimensional benchmark for variable-density flow and transport simulation: matching semi-analytic stability modes for steady unstable convection in an inclined porous box: Hydrogeology Journal, v. 18, no. 1, p. 5-23, https://doi.org/10.1007/s10040-009-0556-6.","productDescription":"19 p.","startPage":"5","endPage":"23","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-015037","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":299647,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"18","issue":"1","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2009-12-10","publicationStatus":"PW","scienceBaseUri":"552e3a30e4b0b22a157fa0af","contributors":{"authors":[{"text":"Voss, Clifford I. 0000-0001-5923-2752 cvoss@usgs.gov","orcid":"https://orcid.org/0000-0001-5923-2752","contributorId":1559,"corporation":false,"usgs":true,"family":"Voss","given":"Clifford","email":"cvoss@usgs.gov","middleInitial":"I.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":544735,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Simmons, Craig T.","contributorId":71889,"corporation":false,"usgs":false,"family":"Simmons","given":"Craig","email":"","middleInitial":"T.","affiliations":[{"id":13412,"text":"Flinders University, Australia","active":true,"usgs":false}],"preferred":false,"id":544736,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Robinson, Neville I.","contributorId":140205,"corporation":false,"usgs":false,"family":"Robinson","given":"Neville","email":"","middleInitial":"I.","affiliations":[{"id":13412,"text":"Flinders University, Australia","active":true,"usgs":false}],"preferred":false,"id":544737,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}} ,{"id":70193187,"text":"70193187 - 2010 - Book review: Hollowed ground—Copper mining and community building on Lake Superior, 1840s–1990s","interactions":[],"lastModifiedDate":"2017-12-04T10:19:19","indexId":"70193187","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1472,"text":"Economic Geology","active":true,"publicationSubtype":{"id":10}},"title":"Book review: Hollowed ground—Copper mining and community building on Lake Superior, 1840s–1990s","docAbstract":"

In 1843, six years before the Forty-niners headed west for the goldfields of California, the United States’ first great mineral rush began to a land that was, as Patrick Henry told Congress, “beyond the most distant wilderness and remote as the moon.” He was referring to the Keweenaw Peninsula of northern Michigan. This rush was not for gold or silver, but for copper. And not just any copper, but native copper, so pure it required little refining before use. The early horde of fortune-seekers came with visions of finding mountains of solid copper, spurred on by stories of large masses of “float copper” that included the famous Ontonagon Boulder, a large mass of native copper originally found lying 32 km up the steep and rugged valley of the Ontonagon River (and now gathering dust in the Smithsonian Museum).

","language":"English","publisher":"Society of Economic Geologists","doi":"10.2113/econgeo.105.7.1353","usgsCitation":"Schulz, K.J., 2010, Book review: Hollowed ground—Copper mining and community building on Lake Superior, 1840s–1990s: Economic Geology, v. 105, no. 7, p. 1351-1354, https://doi.org/10.2113/econgeo.105.7.1353.","productDescription":"4 p.","startPage":"1351","endPage":"1354","ipdsId":"IP-023820","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":349645,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"105","issue":"7","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2011-03-02","publicationStatus":"PW","scienceBaseUri":"5a610acfe4b06e28e9c256f5","contributors":{"authors":[{"text":"Schulz, Klaus J. 0000-0003-2967-4765 kschulz@usgs.gov","orcid":"https://orcid.org/0000-0003-2967-4765","contributorId":2438,"corporation":false,"usgs":true,"family":"Schulz","given":"Klaus","email":"kschulz@usgs.gov","middleInitial":"J.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":718142,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":70190456,"text":"70190456 - 2010 - Geophysical framework of the northern San Francisco Bay region, California","interactions":[],"lastModifiedDate":"2017-09-01T09:18:12","indexId":"70190456","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1820,"text":"Geosphere","active":true,"publicationSubtype":{"id":10}},"title":"Geophysical framework of the northern San Francisco Bay region, California","docAbstract":"

We use geophysical data to examine the structural framework of the northern San Francisco Bay region, an area that hosts the northward continuation of the East Bay fault system. Although this fault system has accommodated ∼175 km of right-lateral offset since 12 Ma, how this offset is partitioned north of the bay is controversial and important for understanding where and how strain is accommodated along this stretch of the broader San Andreas transform margin. Using gravity and magnetic data, we map these faults, many of which influenced basin formation and volcanism. Continuity of magnetic anomalies in certain areas, such as Napa and Sonoma Valleys, the region north of Napa Valley, and the region south of the Santa Rosa Plain, preclude significant (>10 km) offset. Much of the slip is partitioned around Sonoma and Napa Valleys and onto the Carneros, Rodgers Creek, and Green Valley faults. The absence of correlative magnetic anomalies across the Hayward–Rodgers Creek–Maacama fault system suggests that this system reactivated older basement structures, which appear to influence seismicity patterns in the region.

","language":"English","publisher":"The Geological Society of America","doi":"10.1130/GES00510.1","usgsCitation":"Langenheim, V., Graymer, R.W., Jachens, R.C., McLaughlin, R.J., Wagner, D., and Sweetkind, D.S., 2010, Geophysical framework of the northern San Francisco Bay region, California: Geosphere, v. 6, no. 5, p. 594-620, https://doi.org/10.1130/GES00510.1.","productDescription":"27 p.","startPage":"594","endPage":"620","ipdsId":"IP-008075","costCenters":[{"id":309,"text":"Geology and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":475903,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1130/ges00510.1","text":"Publisher Index Page"},{"id":345405,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -123.1182861328125,\n 37.23470197166817\n ],\n [\n -121.234130859375,\n 37.23470197166817\n ],\n [\n -121.234130859375,\n 38.35888785866677\n ],\n [\n -123.1182861328125,\n 38.35888785866677\n ],\n [\n -123.1182861328125,\n 37.23470197166817\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"6","issue":"5","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"59aa71dde4b0e9bde130d01c","contributors":{"authors":[{"text":"Langenheim, Victoria E. 0000-0003-2170-5213 zulanger@usgs.gov","orcid":"https://orcid.org/0000-0003-2170-5213","contributorId":151042,"corporation":false,"usgs":true,"family":"Langenheim","given":"Victoria E.","email":"zulanger@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":709247,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Graymer, Russell W. 0000-0003-4910-5682 rgraymer@usgs.gov","orcid":"https://orcid.org/0000-0003-4910-5682","contributorId":1052,"corporation":false,"usgs":true,"family":"Graymer","given":"Russell","email":"rgraymer@usgs.gov","middleInitial":"W.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":709245,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jachens, Robert C. jachens@usgs.gov","contributorId":1180,"corporation":false,"usgs":true,"family":"Jachens","given":"Robert","email":"jachens@usgs.gov","middleInitial":"C.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":709244,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McLaughlin, Robert J. 0000-0002-4390-2288 rjmcl@usgs.gov","orcid":"https://orcid.org/0000-0002-4390-2288","contributorId":1428,"corporation":false,"usgs":true,"family":"McLaughlin","given":"Robert","email":"rjmcl@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":709246,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wagner, D.L.","contributorId":49178,"corporation":false,"usgs":true,"family":"Wagner","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":709242,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Sweetkind, Donald S. 0000-0003-0892-4796 dsweetkind@usgs.gov","orcid":"https://orcid.org/0000-0003-0892-4796","contributorId":139913,"corporation":false,"usgs":true,"family":"Sweetkind","given":"Donald","email":"dsweetkind@usgs.gov","middleInitial":"S.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":709243,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70192559,"text":"70192559 - 2010 - Coupled hydrology and biogeochemistry of Paleocene–Eocene coal beds, northern Gulf of Mexico","interactions":[],"lastModifiedDate":"2018-02-01T12:47:23","indexId":"70192559","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1723,"text":"GSA Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Coupled hydrology and biogeochemistry of Paleocene–Eocene coal beds, northern Gulf of Mexico","docAbstract":"

Thirty-six formation waters, gas, and microbial samples were collected and analyzed from natural gas and oil wells producing from the Paleocene to Eocene Wilcox Group coal beds and adjacent sandstones in north-central Louisiana, USA, to investigate the role hydrology plays on the generation and distribution of microbial methane. Major ion chemistry and Cl−Br relations of Wilcox Group formation waters suggest mixing of freshwater with halite-derived brines. High alkalinities (up to 47.8 meq/L), no detectable SO4, and elevated δ13C values of dissolved inorganic carbon (up to 20.5‰ Vienna Peedee belemnite [VPDB]) and CO2 (up to 17.67‰ VPDB) in the Wilcox Group coals and adjacent sandstones indicate the dominance of microbial methanogenesis. The δ13C and δD values of CH4, and carbon isotope fractionation of CO2 and CH4, suggest CO2 reduction is the major methanogenic pathway. Geochemical indicators for methanogenesis drop off significantly at chloride concentrations above ∼1.7 mol/L, suggesting that high salinities inhibit microbial activity at depths greater than ∼1.6 km. Formation waters in the Wilcox Group contain up to 1.6% modern carbon (A14C) to at least 1690 m depth; the covariance of δD values of co-produced H2O and CH4 indicate that the microbial methane was generated in situ with these Late Pleistocene or younger waters. The most enriched carbon isotope values for dissolved inorganic carbon (DIC) and CO2, and highest alkalinities, were detected in Wilcox Group sandstone reservoirs that were CO2 flooded in the 1980s for enhanced oil recovery, leading to the intriguing hypothesis that CO2 sequestration may actually enhance methanogenesis in organic-rich formations.

","language":"English","publisher":"The Geological Society of America","doi":"10.1130/B30039.1","usgsCitation":"McIntosh, J.C., Warwick, P.D., Martini, A.M., and Osborn, S.G., 2010, Coupled hydrology and biogeochemistry of Paleocene–Eocene coal beds, northern Gulf of Mexico: GSA Bulletin, v. 122, no. 7-8, p. 1248-1264, https://doi.org/10.1130/B30039.1.","productDescription":"17 p.","startPage":"1248","endPage":"1264","ipdsId":"IP-012265","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":347459,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -94.031982421875,\n 31.015278981711266\n ],\n [\n -89.307861328125,\n 31.015278981711266\n ],\n [\n -89.307861328125,\n 33.02708758002874\n ],\n [\n -94.031982421875,\n 33.02708758002874\n ],\n [\n -94.031982421875,\n 31.015278981711266\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"122","issue":"7-8","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationDate":"2010-03-29","publicationStatus":"PW","scienceBaseUri":"5a07f62ee4b09af898c8cdf6","contributors":{"authors":[{"text":"McIntosh, Jennifer C. 0000-0001-5055-4202","orcid":"https://orcid.org/0000-0001-5055-4202","contributorId":150557,"corporation":false,"usgs":false,"family":"McIntosh","given":"Jennifer","email":"","middleInitial":"C.","affiliations":[{"id":6624,"text":"University of Arizona, Laboratory of Tree-Ring Research","active":true,"usgs":false}],"preferred":false,"id":716194,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Warwick, Peter D. 0000-0002-3152-7783 pwarwick@usgs.gov","orcid":"https://orcid.org/0000-0002-3152-7783","contributorId":762,"corporation":false,"usgs":true,"family":"Warwick","given":"Peter","email":"pwarwick@usgs.gov","middleInitial":"D.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":716192,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Martini, Anna M.","contributorId":192675,"corporation":false,"usgs":false,"family":"Martini","given":"Anna","email":"","middleInitial":"M.","affiliations":[{"id":35249,"text":"Department of Geology, Amherst College","active":true,"usgs":false}],"preferred":false,"id":716208,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Osborn, Stephen G.","contributorId":198479,"corporation":false,"usgs":false,"family":"Osborn","given":"Stephen","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":716209,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70193766,"text":"70193766 - 2010 - Marine electrical resistivity imaging of submarine groundwater discharge: Sensitivity analysis and application in Waquoit Bay, Massachusetts, USA","interactions":[],"lastModifiedDate":"2019-10-21T12:49:34","indexId":"70193766","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"Marine electrical resistivity imaging of submarine groundwater discharge: Sensitivity analysis and application in Waquoit Bay, Massachusetts, USA","docAbstract":"

Electrical resistivity imaging has been used in coastal settings to characterize fresh submarine groundwater discharge and the position of the freshwater/salt-water interface because of the relation of bulk electrical conductivity to pore-fluid conductivity, which in turn is a function of salinity. Interpretation of tomograms for hydrologic processes is complicated by inversion artifacts, uncertainty associated with survey geometry limitations, measurement errors, and choice of regularization method. Variation of seawater over tidal cycles poses unique challenges for inversion. The capabilities and limitations of resistivity imaging are presented for characterizing the distribution of freshwater and saltwater beneath a beach. The experimental results provide new insight into fresh submarine groundwater discharge at Waquoit Bay National Estuarine Research Reserve, East Falmouth, Massachusetts (USA). Tomograms from the experimental data indicate that fresh submarine groundwater discharge may shut down at high tide, whereas temperature data indicate that the discharge continues throughout the tidal cycle. Sensitivity analysis and synthetic modeling provide insight into resolving power in the presence of a time-varying saline water layer. In general, vertical electrodes and cross-hole measurements improve the inversion results regardless of the tidal level, whereas the resolution of surface arrays is more sensitive to time-varying saline water layer.

","language":"English","publisher":"Springer","doi":"10.1007/s10040-009-0498-z","usgsCitation":"Henderson, R., Day-Lewis, F.D., Abarca, E., Harvey, C.F., Karam, H.N., Liu, L., and Lane, J.W., 2010, Marine electrical resistivity imaging of submarine groundwater discharge: Sensitivity analysis and application in Waquoit Bay, Massachusetts, USA: Hydrogeology Journal, v. 18, no. 1, p. 173-185, https://doi.org/10.1007/s10040-009-0498-z.","productDescription":"13 p.","startPage":"173","endPage":"185","ipdsId":"IP-011944","costCenters":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":348723,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts","otherGeospatial":"Waquoit Bay","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -70.54252624511719,\n 41.54815851009314\n ],\n [\n -70.46974182128906,\n 41.54815851009314\n ],\n [\n -70.46974182128906,\n 41.672398925907906\n ],\n [\n -70.54252624511719,\n 41.672398925907906\n ],\n [\n -70.54252624511719,\n 41.54815851009314\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"18","issue":"1","publishingServiceCenter":{"id":11,"text":"Pembroke PSC"},"noUsgsAuthors":false,"publicationDate":"2009-09-10","publicationStatus":"PW","scienceBaseUri":"5a610acde4b06e28e9c256e5","contributors":{"authors":[{"text":"Henderson, Rory rhenders@usgs.gov","contributorId":2083,"corporation":false,"usgs":true,"family":"Henderson","given":"Rory","email":"rhenders@usgs.gov","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true}],"preferred":false,"id":720313,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Day-Lewis, Frederick D. 0000-0003-3526-886X daylewis@usgs.gov","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":1672,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"Frederick","email":"daylewis@usgs.gov","middleInitial":"D.","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"preferred":true,"id":720311,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Abarca, Elena","contributorId":199905,"corporation":false,"usgs":false,"family":"Abarca","given":"Elena","email":"","affiliations":[{"id":13299,"text":"Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA","active":true,"usgs":false}],"preferred":false,"id":720312,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Harvey, Charles F.","contributorId":199836,"corporation":false,"usgs":false,"family":"Harvey","given":"Charles","email":"","middleInitial":"F.","affiliations":[{"id":12444,"text":"Massachusetts Institute of Technology","active":true,"usgs":false}],"preferred":false,"id":721861,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Karam, Hanan N.","contributorId":199837,"corporation":false,"usgs":false,"family":"Karam","given":"Hanan","email":"","middleInitial":"N.","affiliations":[{"id":13299,"text":"Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA","active":true,"usgs":false}],"preferred":false,"id":721862,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Liu, Lanbo","contributorId":199850,"corporation":false,"usgs":false,"family":"Liu","given":"Lanbo","email":"","affiliations":[{"id":6619,"text":"University of Connecticutt","active":true,"usgs":false}],"preferred":false,"id":720315,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Lane, John W. Jr. jwlane@usgs.gov","contributorId":1738,"corporation":false,"usgs":true,"family":"Lane","given":"John","suffix":"Jr.","email":"jwlane@usgs.gov","middleInitial":"W.","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true}],"preferred":false,"id":720314,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}} ,{"id":70193999,"text":"70193999 - 2010 - Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin","interactions":[],"lastModifiedDate":"2017-11-13T15:31:21","indexId":"70193999","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin","docAbstract":"Thermal maturation patterns of Pennsylvanian strata in the Appalachian basin were determined by\ncompiling and contouring published and unpublished vitrinite reflectance (VR) measurements. VR isograd\nvalues range from 0.6% in eastern Ohio and eastern Kentucky (western side of the East Kentucky coal field) to\ngreater than 5.5% in eastern Pennsylvania (Southern Anthracite field, Schuylkill County), corresponding to\nASTM coal rank classes of high volatile C bituminous to meta-anthracite. VR isograds show that thermal\nmaturity of Pennsylvanian coals generally increases from west to east across the basin. The isograds patterns,\nwhich are indicative of maximum temperatures during burial, can be explained by variations in paleodepth\nof burial, paleogeothermal gradient, or a combination of both. However, there are at least four areas of\nunusually high-rank coal in the Appalachian basin that depart from the regional trends and are difficult to\nexplain by depth of burial alone: 1) a west-northwestward salient centered in southwestern Pennsylvania;\n2) an elliptically-shaped, northeast-trending area centered in southern West Virginia and western Virginia;\n3) the eastern part of Black Warrior coal field, Alabama; and 4) the Pennsylvania Anthracite region, in\neastern Pennsylvania. High-rank excursions in southwest Pennsylvania, the Black Warrior coal field, and the\nPennsylvania Anthracite region are interpreted here to represent areas of higher paleo-heat flow related to\nsyntectonic movement of hot fluids towards the foreland, associated with Alleghanian deformation. In\naddition to higher heat flow from fluids, the Pennsylvania Anthracite region also experienced greater depth\nof burial. The high-rank excursion in southwest Virginia was probably primarily controlled by overburden\nthickness, but may also have been influenced by higher geothermal gradients.","language":"English","publisher":"Elsevier","doi":"10.1016/j.coal.2009.12.008","usgsCitation":"Ruppert, L.F., Hower, J., Ryder, R.T., Levine, J.R., Trippi, M.H., and Grady, W.C., 2010, Geologic controls on thermal maturity patterns in Pennsylvanian coal-bearing rocks in the Appalachian basin: International Journal of Coal Geology, v. 81, no. 3, p. 169-181, https://doi.org/10.1016/j.coal.2009.12.008.","productDescription":"23 p.","startPage":"169","endPage":"181","ipdsId":"IP-010795","costCenters":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"links":[{"id":348735,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"Appalachian basin","volume":"81","issue":"3","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a610acde4b06e28e9c256e3","contributors":{"authors":[{"text":"Ruppert, Leslie F. 0000-0002-7453-1061 lruppert@usgs.gov","orcid":"https://orcid.org/0000-0002-7453-1061","contributorId":660,"corporation":false,"usgs":true,"family":"Ruppert","given":"Leslie","email":"lruppert@usgs.gov","middleInitial":"F.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":721876,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hower, James C. 0000-0003-4694-2776","orcid":"https://orcid.org/0000-0003-4694-2776","contributorId":34561,"corporation":false,"usgs":false,"family":"Hower","given":"James C.","affiliations":[{"id":16123,"text":"University of Kentucky, Center for Applied Energy Research, 2540 Research Park Drive, Lexington, KY 40511, United States.","active":true,"usgs":false}],"preferred":false,"id":721877,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ryder, Robert T. rryder@usgs.gov","contributorId":119319,"corporation":false,"usgs":true,"family":"Ryder","given":"Robert","email":"rryder@usgs.gov","middleInitial":"T.","affiliations":[{"id":596,"text":"U.S. Geological Survey National Center","active":false,"usgs":true},{"id":164,"text":"Central Energy Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":721878,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Levine, Jeffrey R.","contributorId":116740,"corporation":false,"usgs":false,"family":"Levine","given":"Jeffrey","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":721879,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Trippi, Michael H. 0000-0002-1398-3427 mtrippi@usgs.gov","orcid":"https://orcid.org/0000-0002-1398-3427","contributorId":941,"corporation":false,"usgs":true,"family":"Trippi","given":"Michael","email":"mtrippi@usgs.gov","middleInitial":"H.","affiliations":[{"id":241,"text":"Eastern Energy Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":721880,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Grady, William C.","contributorId":22429,"corporation":false,"usgs":false,"family":"Grady","given":"William","email":"","middleInitial":"C.","affiliations":[{"id":35742,"text":"West Virginia Geological and Economic Survey","active":true,"usgs":false}],"preferred":false,"id":721881,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70146201,"text":"70146201 - 2010 - Predictive modeling of transient storage and nutrient uptake: Implications for stream restoration","interactions":[],"lastModifiedDate":"2018-10-09T10:30:51","indexId":"70146201","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2338,"text":"Journal of Hydraulic Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Predictive modeling of transient storage and nutrient uptake: Implications for stream restoration","docAbstract":"

This study examined two key aspects of reactive transport modeling for stream restoration purposes: the accuracy of the nutrient spiraling and transient storage models for quantifying reach-scale nutrient uptake, and the ability to quantify transport parameters using measurements and scaling techniques in order to improve upon traditional conservative tracer fitting methods. Nitrate (NO3–) uptake rates inferred using the nutrient spiraling model underestimated the total NO3– mass loss by 82%, which was attributed to the exclusion of dispersion and transient storage. The transient storage model was more accurate with respect to the NO3– mass loss (±20%) and also demonstrated that uptake in the main channel was more significant than in storage zones. Conservative tracer fitting was unable to produce transport parameter estimates for a riffle-pool transition of the study reach, while forward modeling of solute transport using measured/scaled transport parameters matched conservative tracer breakthrough curves for all reaches. Additionally, solute exchange between the main channel and embayment surface storage zones was quantified using first-order theory. These results demonstrate that it is vital to account for transient storage in quantifying nutrient uptake, and the continued development of measurement/scaling techniques is needed for reactive transport modeling of streams with complex hydraulic and geomorphic conditions.

","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/(ASCE)HY.1943-7900.0000180","usgsCitation":"O’Connor, B.L., Hondzo, M., and Harvey, J.W., 2010, Predictive modeling of transient storage and nutrient uptake: Implications for stream restoration: Journal of Hydraulic Engineering, v. 136, no. 12, p. 1018-1032, https://doi.org/10.1061/(ASCE)HY.1943-7900.0000180.","productDescription":"15 p.","startPage":"1018","endPage":"1032","numberOfPages":"15","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-014947","costCenters":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":299657,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Angelo Coast Range Reserve, Elder Creek","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -123.61202716827393,\n 39.71976445680303\n ],\n [\n -123.61108303070067,\n 39.72002853300599\n ],\n [\n -123.61168384552002,\n 39.720952791753206\n ],\n [\n -123.61322879791258,\n 39.721513942806254\n ],\n [\n -123.6144733428955,\n 39.72293330449948\n ],\n [\n -123.61734867095947,\n 39.72352744723169\n ],\n [\n -123.6211681365967,\n 39.72428662216186\n ],\n [\n -123.62245559692381,\n 39.72438564436263\n ],\n [\n -123.62588882446289,\n 39.72636605851521\n ],\n [\n -123.6285924911499,\n 39.72834641578584\n ],\n [\n -123.63108158111574,\n 39.730029674741864\n ],\n [\n -123.63378524780273,\n 39.73072276942534\n ],\n [\n -123.63644599914551,\n 39.731085816240494\n ],\n [\n -123.63953590393065,\n 39.731283840970164\n ],\n [\n -123.64176750183105,\n 39.731283840970164\n ],\n [\n -123.6454153060913,\n 39.730227702505324\n ],\n [\n -123.64768981933594,\n 39.72993066064683\n ],\n [\n -123.64837646484375,\n 39.730062679408604\n ],\n [\n -123.64893436431885,\n 39.729633617508426\n ],\n [\n -123.6481189727783,\n 39.72907253253283\n ],\n [\n -123.6461019515991,\n 39.72880849096423\n ],\n [\n -123.64369869232178,\n 39.72917154786034\n ],\n [\n -123.64159584045412,\n 39.72993066064683\n ],\n [\n -123.63850593566895,\n 39.730062679408604\n ],\n [\n -123.63438606262207,\n 39.729600612636276\n ],\n [\n -123.63073825836182,\n 39.72821439373746\n ],\n [\n -123.62794876098633,\n 39.72613501312839\n ],\n [\n -123.62571716308592,\n 39.724814738922724\n ],\n [\n -123.62322807312012,\n 39.72346143162536\n ],\n [\n -123.62052440643312,\n 39.7226032229918\n ],\n [\n -123.61803531646729,\n 39.7226032229918\n ],\n [\n -123.61520290374754,\n 39.72164597768456\n ],\n [\n -123.6131429672241,\n 39.71986348549764\n ],\n [\n -123.61164093017578,\n 39.71963241832235\n ],\n [\n -123.61202716827393,\n 39.71976445680303\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"136","issue":"12","publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"552e3a2fe4b0b22a157fa0aa","contributors":{"authors":[{"text":"O’Connor, Ben L.","contributorId":38872,"corporation":false,"usgs":false,"family":"O’Connor","given":"Ben","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":544787,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hondzo, Miki","contributorId":11816,"corporation":false,"usgs":false,"family":"Hondzo","given":"Miki","email":"","affiliations":[{"id":12693,"text":"Department of Civil, Environmental, and Geo- Engineering and St. Anthony Falls Laboratory, Minneapolis, MN","active":true,"usgs":false}],"preferred":false,"id":544789,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Harvey, Judson W. 0000-0002-2654-9873 jwharvey@usgs.gov","orcid":"https://orcid.org/0000-0002-2654-9873","contributorId":1796,"corporation":false,"usgs":true,"family":"Harvey","given":"Judson","email":"jwharvey@usgs.gov","middleInitial":"W.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":544788,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70189023,"text":"70189023 - 2010 - Transient electromagnetic mapping of clay units in the San Luis Valley, Colorado","interactions":[],"lastModifiedDate":"2017-09-20T15:04:08","indexId":"70189023","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Transient electromagnetic mapping of clay units in the San Luis Valley, Colorado","docAbstract":"

Transient electromagnetic soundings were used to obtain information needed to refine hydrologic models of the San Luis Valley, Colorado. The soundings were able to map an aquitard called the blue clay that separates an unconfined surface aquifer from a deeper confined aquifer. The blue clay forms a conductor with an average resistivity of 6.9 ohm‐m. Above the conductor are found a mixture of gray clay and sand. The gray clay has an average resistivity of 21 ohm‐m, while the sand has a resistivity of greater than 100 ohm‐m. The large difference in resistivity of these units makes mapping them with a surface geophysical method relatively easy. The blue clay was deposited at the bottom of Lake Alamosa which filled most of the San Luis Valley during the Pleistocene. The geometry of the blue clay is influenced by a graben on the eastern side of the valley. The depth to the blue clay is greater over the graben. Along the eastern edge of valley the blue clay appears to be truncated by faults.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010","language":"English","publisher":"Society of Exploration Geophysicists","doi":"10.4133/1.3445428","usgsCitation":"Fitterman, D.V., and Grauch, V.J., 2010, Transient electromagnetic mapping of clay units in the San Luis Valley, Colorado, in Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010, p. 154-164, https://doi.org/10.4133/1.3445428.","productDescription":"11 p.","startPage":"154","endPage":"164","ipdsId":"IP-019459","costCenters":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"links":[{"id":343155,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","otherGeospatial":"San Luis Valley","publishingServiceCenter":{"id":2,"text":"Denver PSC"},"noUsgsAuthors":false,"publicationDate":"2010-05-17","publicationStatus":"PW","scienceBaseUri":"595611c9e4b0d1f9f0506802","contributors":{"authors":[{"text":"Fitterman, David V. dfitterman@usgs.gov","contributorId":1106,"corporation":false,"usgs":true,"family":"Fitterman","given":"David","email":"dfitterman@usgs.gov","middleInitial":"V.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":702461,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grauch, V. J. S. 0000-0002-0761-3489 tien@usgs.gov","orcid":"https://orcid.org/0000-0002-0761-3489","contributorId":886,"corporation":false,"usgs":true,"family":"Grauch","given":"V.","email":"tien@usgs.gov","middleInitial":"J. S.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":702462,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70193742,"text":"70193742 - 2010 - Brine delineation and monitoring with electrical resistivity tomography and electromagnetic borehole logging at the Fort Knox well field near West Point, Kentucky","interactions":[],"lastModifiedDate":"2020-03-10T14:37:58","indexId":"70193742","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Brine delineation and monitoring with electrical resistivity tomography and electromagnetic borehole logging at the Fort Knox well field near West Point, Kentucky","docAbstract":"

The potable water system at Fort Knox is threatened by brine contamination from improperly abandoned natural gas exploration wells. The Fort Knox well field is located near the town of West Point, Kentucky, in the flood plain of the Ohio River. At the site, unconsolidated sediments approximately 30 – 40 m thick, overlie shale and porous limestone. Brine is believed to flow vertically from the underlying formations to the unconsolidated aquifer through damaged or leaky well casings under a high hydraulic gradient from the artificially pressurized porous limestone, which is utilized for natural gas storage by a regional energy company. Upon reaching the unconsolidated aquifer, brinecontaminated groundwater enters water supply production wells under the pumping‐induced gradient. As part of the Fort Knox remediation strategy to reduce the impact of brine contamination, electrical resistivity tomography (ERT) and borehole electromagnetic (EM) logs are being collected annually to detect gross changes in subsurface conductivity. The 2009 ERT data show areas of high conductivity on the western (contaminated) side of the site with conductivities more than an order of magnitude higher than on the eastern (uncontaminated) side of the site. The areas of high conductivity are interpreted as brine contamination, consistent with known regions of brine contamination. Conductivities from the EM logs are consistent with the results from the ERT inversions. The EM logs show little change between 2008 and 2009, except for some small changes in the brine distribution in well PZ1. Yearly ERT surveys will be continued to detect new areas of brine contamination and monitor the remediation effort.

","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010","largerWorkSubtype":{"id":12,"text":"Conference publication"},"language":"English","publisher":"Society of Exploration Geophysicists","doi":"10.4133/1.3445533","usgsCitation":"Henderson, R., Unthank, M.D., Zettwoch, D.D., and Lane, J.W., 2010, Brine delineation and monitoring with electrical resistivity tomography and electromagnetic borehole logging at the Fort Knox well field near West Point, Kentucky, in Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010, p. 913-922, https://doi.org/10.4133/1.3445533.","productDescription":"10 p.","startPage":"913","endPage":"922","ipdsId":"IP-019006","costCenters":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":350809,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Kentucky","city":"West Point","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -86.02844238281249,\n 37.92984646868451\n ],\n [\n -85.91892242431639,\n 37.92984646868451\n ],\n [\n -85.91892242431639,\n 38.0096892410326\n ],\n [\n -86.02844238281249,\n 38.0096892410326\n ],\n [\n -86.02844238281249,\n 37.92984646868451\n ]\n ]\n ]\n }\n }\n ]\n}","publishingServiceCenter":{"id":11,"text":"Pembroke PSC"},"noUsgsAuthors":false,"publicationDate":"2010-05-17","publicationStatus":"PW","scienceBaseUri":"5a719271e4b0a9a2e9dbde28","contributors":{"authors":[{"text":"Henderson, Rory rhenders@usgs.gov","contributorId":2083,"corporation":false,"usgs":true,"family":"Henderson","given":"Rory","email":"rhenders@usgs.gov","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true}],"preferred":false,"id":720151,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Unthank, Michael D. 0000-0003-2483-0431 munthank@usgs.gov","orcid":"https://orcid.org/0000-0003-2483-0431","contributorId":3902,"corporation":false,"usgs":true,"family":"Unthank","given":"Michael","email":"munthank@usgs.gov","middleInitial":"D.","affiliations":[{"id":27231,"text":"Indiana-Kentucky Water Science Center","active":true,"usgs":true}],"preferred":true,"id":720150,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zettwoch, Douglas D.","contributorId":56709,"corporation":false,"usgs":true,"family":"Zettwoch","given":"Douglas","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":720152,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lane, John W. Jr. 0000-0002-3558-243X jwlane@usgs.gov","orcid":"https://orcid.org/0000-0002-3558-243X","contributorId":189168,"corporation":false,"usgs":true,"family":"Lane","given":"John","suffix":"Jr.","email":"jwlane@usgs.gov","middleInitial":"W.","affiliations":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true}],"preferred":false,"id":720149,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70184310,"text":"70184310 - 2010 - Geometry and kinematics of the eastern Lake Mead fault system in the Virgin Mountains, Nevada and Arizona","interactions":[],"lastModifiedDate":"2017-03-07T11:17:49","indexId":"70184310","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1727,"text":"GSA Special Papers","active":true,"publicationSubtype":{"id":10}},"title":"Geometry and kinematics of the eastern Lake Mead fault system in the Virgin Mountains, Nevada and Arizona","docAbstract":"

The Lake Mead fault system is a northeast-striking, 130-km-long zone of left-slip in the southeast Great Basin, active from before 16 Ma to Quaternary time. The northeast end of the Lake Mead fault system in the Virgin Mountains of southeast Nevada and northwest Arizona forms a partitioned strain field comprising kinematically linked northeast-striking left-lateral faults, north-striking normal faults, and northwest-striking right-lateral faults. Major faults bound large structural blocks whose internal strain reflects their position within a left step-over of the left-lateral faults. Two north-striking large-displacement normal faults, the Lakeside Mine segment of the South Virgin–White Hills detachment fault and the Piedmont fault, intersect the left step-over from the southwest and northeast, respectively. The left step-over in the Lake Mead fault system therefore corresponds to a right-step in the regional normal fault system.

Within the left step-over, displacement transfer between the left-lateral faults and linked normal faults occurs near their junctions, where the left-lateral faults become oblique and normal fault displacement decreases away from the junction. Southward from the center of the step-over in the Virgin Mountains, down-to-the-west normal faults splay northward from left-lateral faults, whereas north and east of the center, down-to-the-east normal faults splay southward from left-lateral faults. Minimum slip is thus in the central part of the left step-over, between east-directed slip to the north and west-directed slip to the south. Attenuation faults parallel or subparallel to bedding cut Lower Paleozoic rocks and are inferred to be early structures that accommodated footwall uplift during the initial stages of extension.

Fault-slip data indicate oblique extensional strain within the left step-over in the South Virgin Mountains, manifested as east-west extension; shortening is partitioned between vertical for extension-dominated structural blocks and south-directed for strike-slip faults. Strike-slip faults are oblique to the extension direction due to structural inheritance from NE-striking fabrics in Proterozoic crystalline basement rocks.

We hypothesize that (1) during early phases of deformation oblique extension was partitioned to form east-west–extended domains bounded by left-lateral faults of the Lake Mead fault system, from ca. 16 to 14 Ma. (2) Beginning ca. 13 Ma, increased south-directed shortening impinged on the Virgin Mountains and forced uplift, faulting, and overturning along the north and west side of the Virgin Mountains. (3) By ca. 10 Ma, initiation of the younger Hen Spring to Hamblin Bay fault segment of the Lake Mead fault system accommodated westward tectonic escape, and the focus of south-directed shortening transferred to the western Lake Mead region. The shift from early partitioned oblique extension to south-directed shortening may have resulted from initiation of right-lateral shear of the eastern Walker Lane to the west coupled with left-lateral shear along the eastern margin of the Great Basin.


","language":"English","publisher":"Geological Society of America","doi":"10.1130/2010.2463(11)","usgsCitation":"Beard, S., Campagna, D.J., and Anderson, R.E., 2010, Geometry and kinematics of the eastern Lake Mead fault system in the Virgin Mountains, Nevada and Arizona: GSA Special Papers, v. 463, p. 243-274, https://doi.org/10.1130/2010.2463(11).","productDescription":"32 p.","startPage":"243","endPage":"274","ipdsId":"IP-013972","costCenters":[{"id":309,"text":"Geology and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":336940,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Arizona, Nevada","otherGeospatial":"Virgin Mountains","volume":"463","publishingServiceCenter":{"id":14,"text":"Menlo Park PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58bfd4f7e4b014cc3a3ba4d1","contributors":{"authors":[{"text":"Beard, Sue 0000-0001-9552-1893 sbeard@usgs.gov","orcid":"https://orcid.org/0000-0001-9552-1893","contributorId":167711,"corporation":false,"usgs":true,"family":"Beard","given":"Sue","email":"sbeard@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":680943,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Campagna, David J.","contributorId":187570,"corporation":false,"usgs":false,"family":"Campagna","given":"David","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":680944,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Anderson, R. Ernest","contributorId":104484,"corporation":false,"usgs":true,"family":"Anderson","given":"R.","email":"","middleInitial":"Ernest","affiliations":[],"preferred":false,"id":680945,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}} ,{"id":70193281,"text":"70193281 - 2010 - Maintenance of Eastern hemlock forests: Factors associated with hemlock vulnerability to hemlock woolly adelgid","interactions":[],"lastModifiedDate":"2017-11-15T14:27:03","indexId":"70193281","displayToPublicDate":"2010-01-01T00:00:00","publicationYear":"2010","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Maintenance of Eastern hemlock forests: Factors associated with hemlock vulnerability to hemlock woolly adelgid","docAbstract":"

Eastern hemlock (Tsuga canadensis [L.]) is the most shade-tolerant and long-lived tree species in eastern North America. The hemlock woolly adelgid (Adelges tsugae) (HWA), is a nonnative invasive insect that feeds on eastern hemlock and Carolina hemlock (Tsuga caroliniana Engelm.). HWA currently is established in 17 eastern states and is causing tree decline and wide-ranging tree mortality. Our data from West Virginia and Pennsylvania suggest that hemlock crown vigor (a ranking of amount of live crown) relates to a predictable pattern of hemlock vulnerability at light and moderate levels of HWA infestation. We found that crown variables, such as live crown ratio and crown density and transparency, are accurate predictors of hemlock decline; more vigorous trees appear to be less vulnerable to HWA. Thus, silvicultural thinning treatments may be a means for reducing stand densities and increasing crown vigor in colder areas where climate may slow HWA spread.

","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Proceedings from the Conference on the Ecology and Management of High-Elevation Forests in the Central and Southern Appalachian Mountains","largerWorkSubtype":{"id":1,"text":"Federal Government Series"},"language":"English","publisher":"USDA Forest Service","usgsCitation":"Fajvan, M.A., and Wood, P.B., 2010, Maintenance of Eastern hemlock forests: Factors associated with hemlock vulnerability to hemlock woolly adelgid, in Proceedings from the Conference on the Ecology and Management of High-Elevation Forests in the Central and Southern Appalachian Mountains, p. 31-38.","productDescription":"8 p.","startPage":"31","endPage":"38","ipdsId":"IP-014482","costCenters":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"links":[{"id":348907,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":348906,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://www.nrs.fs.fed.us/pubs/gtr/gtr_nrs-p-64.pdf"}],"publishingServiceCenter":{"id":9,"text":"Reston PSC"},"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5a610acee4b06e28e9c256ed","contributors":{"authors":[{"text":"Fajvan, Mary Ann","contributorId":200418,"corporation":false,"usgs":false,"family":"Fajvan","given":"Mary","email":"","middleInitial":"Ann","affiliations":[],"preferred":false,"id":722255,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wood, Petra Bohall pbwood@usgs.gov","contributorId":1791,"corporation":false,"usgs":true,"family":"Wood","given":"Petra","email":"pbwood@usgs.gov","middleInitial":"Bohall","affiliations":[{"id":199,"text":"Coop Res Unit Leetown","active":true,"usgs":true}],"preferred":false,"id":718524,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}