{"pageNumber":"947","pageRowStart":"23650","pageSize":"25","recordCount":40807,"records":[{"id":70029981,"text":"70029981 - 2007 - Effect of horseshoe crab spawning density on nest disturbance and exhumation of eggs: A simulation study","interactions":[],"lastModifiedDate":"2021-05-27T17:25:53.910872","indexId":"70029981","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Effect of horseshoe crab spawning density on nest disturbance and exhumation of eggs: A simulation study","docAbstract":"<p>Because the Delaware Bay horseshoe crab (<i>Limulus polyphemus</i>) population is managed to provide for dependent species, such as migratory shorebirds, there is a need to understand the process of egg exhumation and to predict eggs available to foraging shorebirds. A simple spatial model was used to simulate horseshoe crab spawning that would occur on a typical Delaware Bay beach during spring tide cycles to quantify density-dependent nest disturbance. At least 20% of nests and eggs were disturbed for levels of spawning greater than one third of the average density in Delaware Bay during 2004. Nest disturbance increased approximately linearly as spawning density increased from one half to twice the 2004 level. As spawning density increased further, the percentage of eggs that were disturbed reached an asymptote of 70% for densities up to 10 times the density in 2004. Nest disturbance was heaviest in the mid beach zone. Nest disturbance precedes entrainment and begins the process of exhumation of eggs to surface sediments. Model predictions were combined with observations from egg surveys to estimate a snap-shot exhumation rate of 5-9% of disturbed eggs. Because an unknown quantity of eggs were exhumed and removed from the beach prior to the survey, cumulative exhumation rate was likely to have been higher than the snap-shot estimate. Because egg exhumation is density-dependent, in addition to managing for a high population size, identification and conservation of beaches where spawning horseshoe crabs concentrate in high densities (i.e., hot spots) are important steps toward providing a reliable food supply for migratory shorebirds.&nbsp;</p>","language":"English","publisher":"SpringerLink","doi":"10.1007/BF02700171","usgsCitation":"Smith, D., 2007, Effect of horseshoe crab spawning density on nest disturbance and exhumation of eggs: A simulation study: Estuaries and Coasts, v. 30, no. 2, p. 287-295, https://doi.org/10.1007/BF02700171.","productDescription":"9 p.","startPage":"287","endPage":"295","costCenters":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"links":[{"id":240496,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Delaware","otherGeospatial":"Delaware Bay","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -75.35522460937499,\n              38.976492485539396\n            ],\n            [\n              -75.2398681640625,\n              38.852542390364235\n            ],\n            [\n              -74.970703125,\n              38.843986129756615\n            ],\n            [\n              -75.0421142578125,\n              39.0831721934762\n            ],\n            [\n              -75.1849365234375,\n              39.18117526158749\n            ],\n            [\n              -75.4156494140625,\n              39.142842478062505\n            ],\n            [\n              -75.35522460937499,\n              38.976492485539396\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"30","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a05e9e4b0c8380cd5100b","contributors":{"authors":[{"text":"Smith, D. R. 0000-0001-6074-9257","orcid":"https://orcid.org/0000-0001-6074-9257","contributorId":44108,"corporation":false,"usgs":true,"family":"Smith","given":"D. R.","affiliations":[{"id":365,"text":"Leetown Science Center","active":true,"usgs":true}],"preferred":false,"id":425168,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70029975,"text":"70029975 - 2007 - Year-class formation of upper St. Lawrence River northern pike","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029975","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Year-class formation of upper St. Lawrence River northern pike","docAbstract":"Variables associated with year-class formation in upper St. Lawrence River northern pike Esox lucius were examined to explore population trends. A partial least-squares (PLS) regression model (PLS 1) was used to relate a year-class strength index (YCSI; 1974-1997) to explanatory variables associated with spawning and nursery areas (seasonal water level and temperature and their variability, number of ice days, and last day of ice presence). A second model (PLS 2) incorporated four additional ecological variables: potential predators (abundance of double-crested cormorants Phalacrocorax auritus and yellow perch Perca flavescens), female northern pike biomass (as a measure of stock-recruitment effects), and total phosphorus (productivity). Trends in adult northern pike catch revealed a decline (1981-2005), and year-class strength was positively related to catch per unit effort (CPUE; R2 = 0.58). The YCSI exceeded the 23-year mean in only 2 of the last 10 years. Cyclic patterns in the YCSI time series (along with strong year-classes every 4-6 years) were apparent, as was a dampening effect of amplitude beginning around 1990. The PLS 1 model explained over 50% of variation in both explanatory variables and the dependent variable, YCSI first-order moving-average residuals. Variables retained (N = 10; Wold's statistic ??? 0.8) included negative YCSI associations with high summer water levels, high variability in spring and fall water levels, and variability in fall water temperature. The YCSI exhibited positive associations with high spring, summer, and fall water temperature, variability in spring temperature, and high winter and spring water level. The PLS 2 model led to positive YCSI associations with phosphorus and yellow perch CPUE and a negative correlation with double-crested cormorant abundance. Environmental variables (water level and temperature) are hypothesized to regulate northern pike YCSI cycles, and dampening in YCSI magnitude may be related to a combination of factors, including wetland habitat changes, reduced nutrient loading, and increased predation by double-crested cormorants. ?? Copyright by the American Fisheries Society 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M05-081.1","issn":"02755947","usgsCitation":"Smith, B., Farrell, J., Underwood, H., and Smith, S., 2007, Year-class formation of upper St. Lawrence River northern pike: North American Journal of Fisheries Management, v. 27, no. 2, p. 481-491, https://doi.org/10.1577/M05-081.1.","startPage":"481","endPage":"491","numberOfPages":"11","costCenters":[],"links":[{"id":212843,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M05-081.1"},{"id":240395,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-05-01","publicationStatus":"PW","scienceBaseUri":"505bd204e4b08c986b32f62c","contributors":{"authors":[{"text":"Smith, B.M.","contributorId":33926,"corporation":false,"usgs":true,"family":"Smith","given":"B.M.","email":"","affiliations":[],"preferred":false,"id":425144,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Farrell, J.M.","contributorId":54408,"corporation":false,"usgs":true,"family":"Farrell","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":425145,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Underwood, H.B. 0000-0002-2064-9128","orcid":"https://orcid.org/0000-0002-2064-9128","contributorId":90849,"corporation":false,"usgs":true,"family":"Underwood","given":"H.B.","affiliations":[],"preferred":false,"id":425146,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smith, S.J.","contributorId":23675,"corporation":false,"usgs":true,"family":"Smith","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":425143,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031610,"text":"70031610 - 2007 - Sorted bed forms as self-organized patterns: 2. complex forcing scenarios","interactions":[],"lastModifiedDate":"2014-08-22T10:49:48","indexId":"70031610","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2318,"text":"Journal of Geophysical Research F: Earth Surface","active":true,"publicationSubtype":{"id":10}},"title":"Sorted bed forms as self-organized patterns: 2. complex forcing scenarios","docAbstract":"<p>We employ a numerical model to study the development of sorted bed forms under a variety of hydrodynamic and sedimentary conditions. Results indicate that increased variability in wave height decreases the growth rate of the features and can potentially give rise to complicated, a priori unpredictable, behavior. This happens because the system responds to a change in wave characteristics by attempting to self-organize into a patterned seabed of different geometry and spacing. The new wavelength might not have enough time to emerge before a new change in wave characteristics occurs, leading to less regular seabed configurations. The new seabed configuration is also highly dependent on the preexisting morphology, which further limits the possibility of predicting future behavior. For the same reasons, variability in the mean current magnitude and direction slows down the growth of features and causes patterns to develop that differ from classical sorted bed forms. Spatial variability in grain size distribution and different types of net sediment aggradation/degradation can also result in the development of sorted bed forms characterized by a less regular shape. Numerical simulations qualitatively agree with observed geometry (spacing and height) of sorted bed forms. Also in agreement with observations is that at shallower depths, sorted bed forms are more likely to be affected by changes in the forcing conditions, which might also explain why, in shallow waters, sorted bed forms are described as ephemeral features. Finally, simulations indicate that the different sorted bed form shapes and patterns observed in the field might not necessarily be related to diverse physical mechanisms. Instead, variations in sorted bed form characteristics may result from variations in local hydrodynamic and/or sedimentary conditions.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research F: Earth Surface","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Wiley","doi":"10.1029/2006JF000666","issn":"01480227","usgsCitation":"Coco, G., Murray, A.B., Green, M.O., Thieler, E.R., and Hume, T., 2007, Sorted bed forms as self-organized patterns: 2. complex forcing scenarios: Journal of Geophysical Research F: Earth Surface, v. 112, no. F3, F03016; 14 p., https://doi.org/10.1029/2006JF000666.","productDescription":"F03016; 14 p.","numberOfPages":"14","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":477232,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jf000666","text":"Publisher Index Page"},{"id":212272,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2006JF000666"},{"id":239734,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"F3","noUsgsAuthors":false,"publicationDate":"2007-08-14","publicationStatus":"PW","scienceBaseUri":"505b9313e4b08c986b31a295","contributors":{"authors":[{"text":"Coco, Giovanni","contributorId":84978,"corporation":false,"usgs":true,"family":"Coco","given":"Giovanni","affiliations":[],"preferred":false,"id":432324,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Murray, A. Brad","contributorId":57585,"corporation":false,"usgs":true,"family":"Murray","given":"A.","email":"","middleInitial":"Brad","affiliations":[],"preferred":false,"id":432323,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Green, Malcom O.","contributorId":9462,"corporation":false,"usgs":true,"family":"Green","given":"Malcom","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":432321,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thieler, E. Robert 0000-0003-4311-9717 rthieler@usgs.gov","orcid":"https://orcid.org/0000-0003-4311-9717","contributorId":2488,"corporation":false,"usgs":true,"family":"Thieler","given":"E.","email":"rthieler@usgs.gov","middleInitial":"Robert","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":432320,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hume, T.M.","contributorId":10567,"corporation":false,"usgs":true,"family":"Hume","given":"T.M.","email":"","affiliations":[],"preferred":false,"id":432322,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70031587,"text":"70031587 - 2007 - A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change","interactions":[],"lastModifiedDate":"2012-03-12T17:21:10","indexId":"70031587","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1539,"text":"Environmental Geology","active":true,"publicationSubtype":{"id":10}},"title":"A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change","docAbstract":"Excessive nitrate-nitrogen (nitrate) loss from agricultural watersheds is an environmental concern. A common conservation practice to improve stream water quality is to retire vulnerable row croplands to grass. In this paper, a groundwater travel time model based on a geographic information system (GIS) analysis of readily available soil and topographic variables was used to evaluate the time needed to observe stream nitrate concentration reductions from conversion of row crop land to native prairie in Walnut Creek watershed, Iowa. Average linear groundwater velocity in 5-m cells was estimated by overlaying GIS layers of soil permeability, land slope (surrogates for hydraulic conductivity and gradient, respectively) and porosity. Cells were summed backwards from the stream network to watershed divide to develop a travel time distribution map. Results suggested that groundwater from half of the land planted in prairie has reached the stream network during the 10 years of ongoing water quality monitoring. The mean travel time for the watershed was estimated to be 10.1 years, consistent with results from a simple analytical model. The proportion of land in the watershed and subbasins with prairie groundwater reaching the stream (10-22%) was similar to the measured reduction of stream nitrate (11-36%). Results provide encouragement that additional nitrate reductions in Walnut Creek are probable in the future as reduced nitrate groundwater from distal locations discharges to the stream network in the coming years. The high spatial resolution of the model (5-m cells) and its simplicity may make it potentially applicable for land managers interested in communicating lag time issues to the public, particularly related to nitrate concentration reductions over time. ?? 2007 Springer-Verlag.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s00254-007-0659-0","issn":"09430105","usgsCitation":"Schilling, K.E., and Wolter, C., 2007, A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change: Environmental Geology, v. 53, no. 2, p. 433-443, https://doi.org/10.1007/s00254-007-0659-0.","startPage":"433","endPage":"443","numberOfPages":"11","costCenters":[],"links":[{"id":212479,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s00254-007-0659-0"},{"id":239969,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"53","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-02-14","publicationStatus":"PW","scienceBaseUri":"5059e2dee4b0c8380cd45ccf","contributors":{"authors":[{"text":"Schilling, K. E.","contributorId":61982,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":432232,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wolter, C.F.","contributorId":23301,"corporation":false,"usgs":true,"family":"Wolter","given":"C.F.","email":"","affiliations":[],"preferred":false,"id":432231,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031013,"text":"70031013 - 2007 - Deglacial climate variability in central Florida, USA","interactions":[],"lastModifiedDate":"2014-10-09T10:23:24","indexId":"70031013","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2996,"text":"Palaeogeography, Palaeoclimatology, Palaeoecology","printIssn":"0031-0182","active":true,"publicationSubtype":{"id":10}},"title":"Deglacial climate variability in central Florida, USA","docAbstract":"<p>Pollen and ostracode evidence from lacustrine sediments underlying modern Tampa Bay, Florida, document frequent and abrupt climatic and hydrological events superimposed on deglacial warming in the subtropics. Radiocarbon chronology on well-preserved mollusk shells and pollen residue from core MD02-2579 documents continuous sedimentation in a variety of non-marine habitats in a karst-controlled basin from 20 ka to 11.5 ka.</p>\n<br>\n<p>During the last glacial maximum (LGM), much drier and cooler-than-modern conditions are indicated by pollen assemblages enriched in Chenopodiaceae and <i>Carya</i>, with rare <i>Pinus</i> (< 10%). <i>Pinus</i> pollen increased to 20–40% during the warming of the initial deglaciation (∼ 17.2 ka), reaching near modern abundance (60–80%) during warmer, moister climates of the Bølling/Allerød interval (14.7–12.9 ka). Within the Bølling/Allerød, centennial-scale dry events corresponding to the Older Dryas and Intra-Allerød Cold Period indicate rapid vegetation response (< 50 years) to climate variability. The Younger Dryas (12.9–11.6 ka) was characterized by two distinct phases: slightly drier than the peak Bølling/Allerød between 12.9 and 12.3 ka and much drier from 12.3 to 11.5 ka. The Tampa Bay record of deglacial atmospheric temperature and moisture can be correlated with other paleoclimate records in the North Atlantic region and has implications for climate-forcing by ice-sheet fluctuation, thermohaline circulation, and atmospheric circulation.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeogeography, Palaeoclimatology, Palaeoecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.palaeo.2007.04.016","issn":"00310182","usgsCitation":"Willard, D., Bernhardt, C., Brooks, G.R., Cronin, T.M., Edgar, T., and Larson, R., 2007, Deglacial climate variability in central Florida, USA: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 251, no. 3-4, p. 366-382, https://doi.org/10.1016/j.palaeo.2007.04.016.","productDescription":"17 p.","startPage":"366","endPage":"382","numberOfPages":"17","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":211592,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.palaeo.2007.04.016"},{"id":238905,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","volume":"251","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fe51e4b0c8380cd4ec7c","contributors":{"authors":[{"text":"Willard, Debra  A. 0000-0003-4878-0942","orcid":"https://orcid.org/0000-0003-4878-0942","contributorId":85982,"corporation":false,"usgs":true,"family":"Willard","given":"Debra  A.","affiliations":[],"preferred":false,"id":429639,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bernhardt, C.E.","contributorId":65554,"corporation":false,"usgs":true,"family":"Bernhardt","given":"C.E.","email":"","affiliations":[],"preferred":false,"id":429637,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brooks, G. R.","contributorId":96312,"corporation":false,"usgs":true,"family":"Brooks","given":"G.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":429640,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cronin, T. M. 0000-0002-2643-0979","orcid":"https://orcid.org/0000-0002-2643-0979","contributorId":42613,"corporation":false,"usgs":true,"family":"Cronin","given":"T.","email":"","middleInitial":"M.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true}],"preferred":false,"id":429636,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Edgar, T.","contributorId":70595,"corporation":false,"usgs":true,"family":"Edgar","given":"T.","email":"","affiliations":[],"preferred":false,"id":429638,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Larson, R.","contributorId":30438,"corporation":false,"usgs":true,"family":"Larson","given":"R.","affiliations":[],"preferred":false,"id":429635,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70029964,"text":"70029964 - 2007 - Mountaintop island age determines species richness of boreal mammals in the American Southwest","interactions":[],"lastModifiedDate":"2017-03-10T15:08:10","indexId":"70029964","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1445,"text":"Ecography","active":true,"publicationSubtype":{"id":10}},"title":"Mountaintop island age determines species richness of boreal mammals in the American Southwest","docAbstract":"<p><span>Models that describe the mechanisms responsible for insular patterns of species richness include the equilibrium theory of island biogeography and the nonequilibrium vicariance model. The relative importance of dispersal or vicariance in structuring insular distribution patterns can be inferred from these models. Predictions of the alternative models were tested for boreal mammals in the American Southwest. Age of mountaintop islands of boreal habitat was determined by constructing a geographic cladogram based on characteristics of intervening valley barriers. Other independent variables included area and isolation of mountaintop islands. Island age was the most important predictor of species richness. In contrast with previous studies of species richness patterns in this system, these results supported the nonequilibrium vicariance model, which indicates that vicariance has been the primary determinant of species distribution patterns in this system.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.0906-7590.2007.04721.x","issn":"09067590","usgsCitation":"Frey, J., Bogan, M., and Yates, T.L., 2007, Mountaintop island age determines species richness of boreal mammals in the American Southwest: Ecography, v. 30, no. 2, p. 231-240, https://doi.org/10.1111/j.0906-7590.2007.04721.x.","productDescription":"16 p.","startPage":"231","endPage":"240","costCenters":[],"links":[{"id":240216,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"30","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-11-06","publicationStatus":"PW","scienceBaseUri":"505a5ebee4b0c8380cd70c48","contributors":{"authors":[{"text":"Frey, J.K.","contributorId":83068,"corporation":false,"usgs":true,"family":"Frey","given":"J.K.","email":"","affiliations":[],"preferred":false,"id":425089,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bogan, M.A.","contributorId":17939,"corporation":false,"usgs":true,"family":"Bogan","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":425088,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yates, Terry L.","contributorId":87489,"corporation":false,"usgs":false,"family":"Yates","given":"Terry","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":425090,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70031015,"text":"70031015 - 2007 - Evidence for a physical linkage between galactic cosmic rays and regional climate time series","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70031015","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":661,"text":"Advances in Space Research","active":true,"publicationSubtype":{"id":10}},"title":"Evidence for a physical linkage between galactic cosmic rays and regional climate time series","docAbstract":"The effects of solar variability on regional climate time series were examined using a sequence of physical connections between total solar irradiance (TSI) modulated by galactic cosmic rays (GCRs), and ocean and atmospheric patterns that affect precipitation and streamflow. The solar energy reaching the Earth's surface and its oceans is thought to be controlled through an interaction between TSI and GCRs, which are theorized to ionize the atmosphere and increase cloud formation and its resultant albedo. High (low) GCR flux may promote cloudiness (clear skies) and higher (lower) albedo at the same time that TSI is lowest (highest) in the solar cycle which in turn creates cooler (warmer) ocean temperature anomalies. These anomalies have been shown to affect atmospheric flow patterns and ultimately affect precipitation over the Midwestern United States. This investigation identified a relation among TSI and geomagnetic index aa (GI-AA), and streamflow in the Mississippi River Basin for the period 1878-2004. The GI-AA was used as a proxy for GCRs. The lag time between the solar signal and streamflow in the Mississippi River at St. Louis, Missouri is approximately 34 years. The current drought (1999-2007) in the Mississippi River Basin appears to be caused by a period of lower solar activity that occurred between 1963 and 1977. There appears to be a solar \"fingerprint\" that can be detected in climatic time series in other regions of the world, with each series having a unique lag time between the solar signal and the hydroclimatic response. A progression of increasing lag times can be spatially linked to the ocean conveyor belt, which may transport the solar signal over a time span of several decades. The lag times for any one region vary slightly and may be linked to the fluctuations in the velocity of the ocean conveyor belt.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Advances in Space Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.asr.2007.02.079","issn":"02731177","usgsCitation":"Perry, C.A., 2007, Evidence for a physical linkage between galactic cosmic rays and regional climate time series: Advances in Space Research, v. 40, no. 3, p. 353-364, https://doi.org/10.1016/j.asr.2007.02.079.","startPage":"353","endPage":"364","numberOfPages":"12","costCenters":[],"links":[{"id":211619,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.asr.2007.02.079"},{"id":238938,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"40","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d30e4b0c8380cd52e79","contributors":{"authors":[{"text":"Perry, C. A.","contributorId":106149,"corporation":false,"usgs":true,"family":"Perry","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":429645,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031590,"text":"70031590 - 2007 - Characterisation and modelling of washover fans","interactions":[],"lastModifiedDate":"2014-08-22T14:16:01","indexId":"70031590","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Characterisation and modelling of washover fans","docAbstract":"<p>Pre- and post-storm topography and aerial photography, collected in regions where new washover fans were formed, were studied to determine the extent of morphologic, vegetative and anthropogenic control on washover shape and extent. When overwash is funnelled through a gap in a dune ridge and then spreads laterally on the back barrier, decelerating and depositing sediment, it forms washover fans. Fans were shown to primarily occur at pre-existing gaps in the foredune. During overwash, these gaps, or overwash throats, widened and deepened. The shape and extent of the fan was shown to depend on not only the pre-storm topography, but also the existence of beach tracks, roads and other anthropogenic influences and vegetation. The cross-shore overwash profile change model by Larson et al. and Donnelly et al. was modified to include pre-storm throat widths and a lateral spreading angle estimated from the pre-storm topography as inputs and tested using cross-shore profiles through the fan centres. These new inputs make the model more generalised, such that the calibrated model is applicable to a wider range of cross-shore profiles.</p>","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes","conferenceLocation":"New Orleans, LA","language":"English","publisher":"American Society of Civil Engineers","doi":"10.1061/40926(239)162","isbn":"0784409269; 9780784409268","usgsCitation":"Donnelly, C., and Sallenger, A., 2007, Characterisation and modelling of washover fans, <i>in</i> Coastal Sediments '07 - Proceedings of 6th International Symposium on Coastal Engineering and Science of Coastal Sediment Processes, New Orleans, LA, p. 2061-2073, https://doi.org/10.1061/40926(239)162.","productDescription":"13 p.","startPage":"2061","endPage":"2073","numberOfPages":"13","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":212508,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/40926(239)162"},{"id":240001,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationDate":"2012-04-26","publicationStatus":"PW","scienceBaseUri":"5059f489e4b0c8380cd4bd94","contributors":{"authors":[{"text":"Donnelly, Chantal","contributorId":74955,"corporation":false,"usgs":true,"family":"Donnelly","given":"Chantal","email":"","affiliations":[],"preferred":false,"id":432240,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sallenger, Asbury H. Jr.","contributorId":27458,"corporation":false,"usgs":true,"family":"Sallenger","given":"Asbury H.","suffix":"Jr.","affiliations":[],"preferred":false,"id":432239,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031528,"text":"70031528 - 2007 - Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water","interactions":[],"lastModifiedDate":"2012-03-12T17:21:14","indexId":"70031528","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2040,"text":"International Journal of Environmental Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water","docAbstract":"The Soil and Water Assessment Tool (SWAT) was used to characterize the fate and transport of fluometuron (a herbicide used on cotton) in the Bogue Phalia Basin in northwestern Mississippi, USA. SWAT is a basin-scale watershed model, able to simulate hydrological, chemical, and sediment transport processes. After adjustments to a few parameters (specifically the SURLAG variable, the runoff curve number, Manning's N for overland flow, soil available water capacity, and the base-flow alpha factor) the SWAT model fit the observed streamflow well (the Coefficient of Efficiency and R2 were greater than 60). The results from comparing observed fluometuron concentrations with simulated concentrations were reasonable. The simulated concentrations (which were daily averages) followed the pattern of observed concentrations (instantaneous values) closely, but could be off in magnitude at times. Further calibration might have improved the fit, but given the uncertainties in the input data, it was not clear that any improvement would be due to a better understanding of the input variables. ?? 2007 Taylor & Francis.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Environmental Analytical Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1080/03067310701627819","issn":"03067319","usgsCitation":"Coupe, R., 2007, Use of a watershed model to characterize the fate and transport of fluometuron, a soil-applied cotton herbicide, in surface water: International Journal of Environmental Analytical Chemistry, v. 87, no. 13-14, p. 883-896, https://doi.org/10.1080/03067310701627819.","startPage":"883","endPage":"896","numberOfPages":"14","costCenters":[],"links":[{"id":212538,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/03067310701627819"},{"id":240035,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"87","issue":"13-14","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbea1e4b08c986b3296cc","contributors":{"authors":[{"text":"Coupe, R.H.","contributorId":84778,"corporation":false,"usgs":true,"family":"Coupe","given":"R.H.","affiliations":[],"preferred":false,"id":431965,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70030902,"text":"70030902 - 2007 - Composite analysis for Escherichia coli at coastal beaches","interactions":[],"lastModifiedDate":"2012-03-12T17:21:15","indexId":"70030902","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"Composite analysis for Escherichia coli at coastal beaches","docAbstract":"At some coastal beaches, concentrations of fecal-indicator bacteria can differ substantially between multiple points at the same beach at the same time. Because of this spatial variability, the recreational water quality at beaches is sometimes determined by stratifying a beach into several areas and collecting a sample from each area to analyze for the concentration of fecal-indicator bacteria. The average concentration of bacteria from those points is often used to compare to the recreational standard for advisory postings. Alternatively, if funds are limited, a single sample is collected to represent the beach. Compositing the samples collected from each section of the beach may yield equally accurate data as averaging concentrations from multiple points, at a reduced cost. In the study described herein, water samples were collected at multiple points from three Lake Erie beaches and analyzed for Escherichia coli on modified mTEC agar (EPA Method 1603). From the multiple-point samples, a composite sample (n = 116) was formed at each beach by combining equal aliquots of well-mixed water from each point. Results from this study indicate that E. coli concentrations from the arithmetic average of multiple-point samples and from composited samples are not significantly different (t = 1.59, p = 0.1139) and yield similar measures of recreational water quality; additionally, composite samples could result in a significant cost savings.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Great Lakes Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.3394/0380-1330(2007)33[335:CAFECA]2.0.CO;2","issn":"03801330","usgsCitation":"Bertke, E., 2007, Composite analysis for Escherichia coli at coastal beaches: Journal of Great Lakes Research, v. 33, no. 2, p. 335-341, https://doi.org/10.3394/0380-1330(2007)33[335:CAFECA]2.0.CO;2.","startPage":"335","endPage":"341","numberOfPages":"7","costCenters":[],"links":[{"id":211444,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.3394/0380-1330(2007)33[335:CAFECA]2.0.CO;2"},{"id":238735,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f916e4b0c8380cd4d417","contributors":{"authors":[{"text":"Bertke, E.E.","contributorId":24990,"corporation":false,"usgs":true,"family":"Bertke","given":"E.E.","email":"","affiliations":[],"preferred":false,"id":429145,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70030891,"text":"70030891 - 2007 - Isotopic analysis of N and O in nitrite and nitrate by sequential selective bacterial reduction to N2O","interactions":[],"lastModifiedDate":"2018-10-17T08:54:35","indexId":"70030891","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":761,"text":"Analytical Chemistry","active":true,"publicationSubtype":{"id":10}},"displayTitle":"Isotopic analysis of N and O in nitrite and nitrate by sequential selective bacterial reduction to N<sub>2</sub>O","title":"Isotopic analysis of N and O in nitrite and nitrate by sequential selective bacterial reduction to N2O","docAbstract":"<p><span>Nitrite is an important intermediate species in the biogeochemical cycling of nitrogen, but its role in natural aquatic systems is poorly understood. Isotopic data can be used to study the sources and transformations of NO</span><sub>2</sub><sup>-</sup><span> in the environment, but methods for independent isotopic analyses of NO</span><sub>2</sub><sup>-</sup><span> in the presence of other N species are still new and evolving. This study demonstrates that isotopic analyses of N and O in NO</span><sub>2</sub><sup>-</sup><span> can be done by treating whole freshwater or saltwater samples with the denitrifying bacterium </span><i>Stenotrophomonas nitritireducens</i><span>, which selectively reduces NO</span><sub>2</sub><sup>-</sup><span> to N</span><sub>2</sub><span>O for isotope ratio mass spectrometry. When calibrated with solutions containing NO</span><sub>2</sub><sup>-</sup><span> with known isotopic compositions determined independently, reproducible δ</span><sup>15</sup><span>N and δ</span><sup>18</sup><span>O values were obtained at both natural-abundance levels (±0.2−0.5‰ for δ</span><sup>15</sup><span>N and ±0.4−1.0‰ for δ</span><sup>18</sup><span>O) and moderately enriched </span><sup>15</sup><span>N tracer levels (±20−50‰ for δ</span><sup>15</sup><span>N near 5000‰) for 5−20 nmol of NO</span><sub>2</sub><sup>-</sup><span> (1−20 μmol/L in 1−5 mL aliquots). This method is highly selective for NO</span><sub>2</sub><sup>-</sup><span>and was used for mixed samples containing both NO</span><sub>2</sub><sup>-</sup><span> and NO</span><sub>3</sub><sup>-</sup><span> with little or no measurable cross-contamination. In addition, mixed samples that were analyzed with </span><i>S. nitritireducens</i><span> were treated subsequently with </span><i>Pseudomonas aureofaciens</i><span> to reduce the NO</span><sub>3</sub><sup>-</sup><span> in the absence of NO</span><sub>2</sub><sup>-</sup><span>, providing isotopic analyses of NO</span><sub>2</sub><sup>-</sup><span> and NO</span><sub>3</sub><sup>-</sup><span> separately in the same aliquot. Sequential bacterial reduction methods like this one should be useful for a variety of isotopic studies aimed at understanding nitrogen cycling in aquatic environments. A test of these methods in an agricultural watershed in Indiana provides isotopic evidence for both nitrification and denitrification as sources of NO</span><sub>2</sub><sup>-</sup><span> in a small stream.</span></p>","language":"English","publisher":"ACS","doi":"10.1021/ac070176k","issn":"00032700","usgsCitation":"Bohlke, J.K., Smith, R.L., and Hannon, J.E., 2007, Isotopic analysis of N and O in nitrite and nitrate by sequential selective bacterial reduction to N2O: Analytical Chemistry, v. 79, no. 15, p. 5888-5895, https://doi.org/10.1021/ac070176k.","productDescription":"8 p.","startPage":"5888","endPage":"5895","numberOfPages":"8","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":238563,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211294,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/ac070176k"}],"country":"United States","state":"Indiana","volume":"79","issue":"15","noUsgsAuthors":false,"publicationDate":"2007-06-21","publicationStatus":"PW","scienceBaseUri":"505a3f93e4b0c8380cd64613","contributors":{"authors":[{"text":"Bohlke, John Karl 0000-0001-5693-6455 jkbohlke@usgs.gov","orcid":"https://orcid.org/0000-0001-5693-6455","contributorId":127841,"corporation":false,"usgs":true,"family":"Bohlke","given":"John","email":"jkbohlke@usgs.gov","middleInitial":"Karl","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":false,"id":429110,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Smith, Richard L. 0000-0002-3829-0125 rlsmith@usgs.gov","orcid":"https://orcid.org/0000-0002-3829-0125","contributorId":1592,"corporation":false,"usgs":true,"family":"Smith","given":"Richard","email":"rlsmith@usgs.gov","middleInitial":"L.","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true},{"id":38175,"text":"Toxics Substances Hydrology Program","active":true,"usgs":true}],"preferred":true,"id":429109,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hannon, Janet E. jehannon@usgs.gov","contributorId":3177,"corporation":false,"usgs":true,"family":"Hannon","given":"Janet","email":"jehannon@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":429108,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030890,"text":"70030890 - 2007 - Ecohydrological controls on soil moisture and hydraulic conductivity within a pinyon‐juniper woodland","interactions":[],"lastModifiedDate":"2018-04-03T12:16:30","indexId":"70030890","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Ecohydrological controls on soil moisture and hydraulic conductivity within a pinyon‐juniper woodland","docAbstract":"<p><span>The impact of pinyon‐juniper woodland encroachment on rangeland ecosystems is often associated with a reduction of streamflow and recharge and an increase in soil erosion. The objective of this study is to investigate vegetational control on seasonal soil hydrologic properties along a 15‐m transect in pinyon‐juniper woodland with biocrust. We demonstrate that the juniper tree controls soil water content (SWC) patterns directly under the canopy via interception, and beyond the canopy via shading in a preferred orientation, opposite to the prevailing wind direction. The juniper also controls the SWC and unsaturated hydraulic conductivity measured close to water saturation (</span><i>K</i><span>(</span><i>h</i><span>)) under the canopy by the creation of soil water repellency due to needle drop. We use this information to refine the hydrologic functional unit (HFU) concept into three interacting hydrologic units: canopy patches, intercanopy patches, and a transitional unit formed by intercanopy patches in the rain shadow of the juniper tree. Spatial autoregressive state‐space models show the close relationship between<span>&nbsp;</span></span><i>K</i><span>(</span><i>h</i><span>) close to soil water saturation and SWC at medium and low levels, integrating a number of influences on hydraulic conductivity.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006WR005398","usgsCitation":"Lebron, I., Madsen, M., Chandler, D., Robinson, D., Wendroth, O., and Belnap, J., 2007, Ecohydrological controls on soil moisture and hydraulic conductivity within a pinyon‐juniper woodland: Water Resources Research, v. 43, no. 8, Article W08422; 15 p., https://doi.org/10.1029/2006WR005398.","productDescription":"Article W08422; 15 p.","costCenters":[],"links":[{"id":477215,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006wr005398","text":"Publisher Index Page"},{"id":238530,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"8","noUsgsAuthors":false,"publicationDate":"2007-08-22","publicationStatus":"PW","scienceBaseUri":"505a053de4b0c8380cd50d04","contributors":{"authors":[{"text":"Lebron, I.","contributorId":94170,"corporation":false,"usgs":true,"family":"Lebron","given":"I.","email":"","affiliations":[],"preferred":false,"id":429106,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Madsen, M.D.","contributorId":37216,"corporation":false,"usgs":true,"family":"Madsen","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":429103,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Chandler, D.G.","contributorId":105180,"corporation":false,"usgs":true,"family":"Chandler","given":"D.G.","email":"","affiliations":[],"preferred":false,"id":429107,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Robinson, D.A.","contributorId":64895,"corporation":false,"usgs":true,"family":"Robinson","given":"D.A.","email":"","affiliations":[],"preferred":false,"id":429104,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Wendroth, O.","contributorId":82533,"corporation":false,"usgs":true,"family":"Wendroth","given":"O.","email":"","affiliations":[],"preferred":false,"id":429105,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Belnap, J. 0000-0001-7471-2279","orcid":"https://orcid.org/0000-0001-7471-2279","contributorId":23872,"corporation":false,"usgs":true,"family":"Belnap","given":"J.","affiliations":[],"preferred":false,"id":429102,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031370,"text":"70031370 - 2007 - Cross-calibration of the Terra MODIS, Landsat 7 ETM+ and EO-1 ALI sensors using near-simultaneous surface observation over the Railroad Valley Playa, Nevada, test site","interactions":[],"lastModifiedDate":"2024-09-17T15:06:35.171594","indexId":"70031370","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Cross-calibration of the Terra MODIS, Landsat 7 ETM+ and EO-1 ALI sensors using near-simultaneous surface observation over the Railroad Valley Playa, Nevada, test site","docAbstract":"A cross-calibration methodology has been developed using coincident image pairs from the Terra Moderate Resolution Imaging Spectroradiometer (MODIS), the Landsat 7 (L7) Enhanced Thematic Mapper Plus (ETM+) and the Earth Observing EO-1 Advanced Land Imager (ALI) to verify the absolute radiometric calibration accuracy of these sensors with respect to each other. To quantify the effects due to different spectral responses, the Relative Spectral Responses (RSR) of these sensors were studied and compared by developing a set of \"figures-of-merit.\" Seven cloud-free scenes collected over the Railroad Valley Playa, Nevada (RVPN), test site were used to conduct the cross-calibration study. This cross-calibration approach was based on image statistics from near-simultaneous observations made by different satellite sensors. Homogeneous regions of interest (ROI) were selected in the image pairs, and the mean target statistics were converted to absolute units of at-sensor reflectance. Using these reflectances, a set of cross-calibration equations were developed giving a relative gain and bias between the sensor pair.","conferenceTitle":"Earth Observing Systems XII","conferenceDate":"August 26-28, 2007","conferenceLocation":"San Diego, CA","language":"English","doi":"10.1117/12.734292","issn":"0277786X","isbn":"9780819468253","usgsCitation":"Chander, G., Angal, A., Choi, T., Meyer, D.J., Xiong, X., and Teillet, P., 2007, Cross-calibration of the Terra MODIS, Landsat 7 ETM+ and EO-1 ALI sensors using near-simultaneous surface observation over the Railroad Valley Playa, Nevada, test site, Earth Observing Systems XII, v. 6677, San Diego, CA, August 26-28, 2007, 66770Y, 12 p., https://doi.org/10.1117/12.734292.","productDescription":"66770Y, 12 p.","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":239786,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6677","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059fcc1e4b0c8380cd4e400","contributors":{"authors":[{"text":"Chander, G.","contributorId":51449,"corporation":false,"usgs":true,"family":"Chander","given":"G.","affiliations":[],"preferred":false,"id":431230,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Angal, A.","contributorId":52716,"corporation":false,"usgs":true,"family":"Angal","given":"A.","affiliations":[],"preferred":false,"id":431231,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Choi, T.","contributorId":48698,"corporation":false,"usgs":true,"family":"Choi","given":"T.","affiliations":[],"preferred":false,"id":431229,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Meyer, D. J.","contributorId":46721,"corporation":false,"usgs":true,"family":"Meyer","given":"D.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":431228,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Xiong, X.","contributorId":37885,"corporation":false,"usgs":true,"family":"Xiong","given":"X.","affiliations":[],"preferred":false,"id":431227,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Teillet, P.M.","contributorId":23717,"corporation":false,"usgs":true,"family":"Teillet","given":"P.M.","email":"","affiliations":[],"preferred":false,"id":431226,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031374,"text":"70031374 - 2007 - Finite-frequency traveltime tomography of San Francisco Bay region crustal velocity structure","interactions":[],"lastModifiedDate":"2023-07-20T11:16:06.730061","indexId":"70031374","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Finite-frequency traveltime tomography of San Francisco Bay region crustal velocity structure","docAbstract":"<p class=\"chapter-para\">Seismic velocity structure of the San Francisco Bay region crust is derived using measurements of finite-frequency traveltimes. A total of 57 801 relative traveltimes are measured by cross-correlation over the frequency range 0.5–1.5 Hz. From these are derived 4862 ‘summary’ traveltimes, which are used to derive 3-D<span>&nbsp;</span><i>P</i>-wave velocity structure over a 341 × 140 km<sup>2</sup><span>&nbsp;</span>area from the surface to 25 km depth. The seismic tomography is based on sensitivity kernels calculated on a spherically symmetric reference model. Robust elements of the derived<span>&nbsp;</span><i>P</i>-wave velocity structure are: a pronounced velocity contrast across the San Andreas fault in the south Bay region (west side faster); a moderate velocity contrast across the Hayward fault (west side faster); moderately low velocity crust around the Quien Sabe volcanic field and the Sacramento River delta; very low velocity crust around Lake Berryessa. These features are generally explicable with surface rock types being extrapolated to depth ∼10 km in the upper crust. Generally high mid-lower crust velocity and high inferred Poisson's ratio suggest a mafic lower crust.</p>","language":"English","publisher":"Oxford Academic","doi":"10.1111/j.1365-246X.2007.03532.x","issn":"0956540X","usgsCitation":"Pollitz, F., 2007, Finite-frequency traveltime tomography of San Francisco Bay region crustal velocity structure: Geophysical Journal International, v. 171, no. 2, p. 630-656, https://doi.org/10.1111/j.1365-246X.2007.03532.x.","productDescription":"27 p.","startPage":"630","endPage":"656","numberOfPages":"27","costCenters":[],"links":[{"id":239853,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"San Francisco Bay region","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -123.44690589033075,\n              38.695260367185796\n            ],\n            [\n              -123.44690589033075,\n              36.92551991847962\n            ],\n            [\n              -121.2505826039804,\n              36.92551991847962\n            ],\n            [\n              -121.2505826039804,\n              38.695260367185796\n            ],\n            [\n              -123.44690589033075,\n              38.695260367185796\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"171","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1030e4b0c8380cd53b7e","contributors":{"authors":[{"text":"Pollitz, F. F.","contributorId":108280,"corporation":false,"usgs":true,"family":"Pollitz","given":"F. F.","affiliations":[],"preferred":false,"id":431246,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031378,"text":"70031378 - 2007 - Postearthquake relaxation and aftershock accumulation linearly related after the 2003 M 6.5 Chengkung, Taiwan, and the 2004 M 6.0 Parkfield, California, earthquakes","interactions":[],"lastModifiedDate":"2023-07-24T11:08:50.253038","indexId":"70031378","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Postearthquake relaxation and aftershock accumulation linearly related after the 2003 M 6.5 Chengkung, Taiwan, and the 2004 M 6.0 Parkfield, California, earthquakes","docAbstract":"<div id=\"16137073\" class=\"article-section-wrapper js-article-section js-content-section  \" data-section-parent-id=\"0\"><p>We treat both the number of earthquakes and the deformation following a mainshock as the superposition of a steady background accumulation and the postearthquake process. The preseismic displacement and seismicity rates<span>&nbsp;</span><i>r<sub>u</sub></i><span>&nbsp;</span>and<span>&nbsp;</span><i>r<sub>E</sub></i><span>&nbsp;</span>are used as estimates of the background rates. Let<span>&nbsp;</span><i>t</i><span>&nbsp;</span>be the time after the mainshock,<span>&nbsp;</span><i>u</i>(<i>t</i>) +<span>&nbsp;</span><i>u</i><sub>0</sub><span>&nbsp;</span>the postseismic displacement less the background accumulation<span>&nbsp;</span><i>r<sub>u</sub>t</i>, and Δ<i>N</i>(<i>t</i>) the observed cumulative number of postseismic earthquakes less the background accumulation<span>&nbsp;</span><i>r<sub>E</sub>t</i>. For the first 160 days (duration limited by the occurrence of another nearby earthquake) following the Chengkung (<i>M</i><span>&nbsp;</span>6.5, 10 December 2003, eastern Taiwan) and the first 560 days following the Parkfield (<i>M</i><span>&nbsp;</span>6.0, 28 September 2004, central California) earthquakes<span>&nbsp;</span><i>u</i>(<i>t</i>) +<span>&nbsp;</span><i>u</i><sub>0</sub><span>&nbsp;</span>is a linear function of Δ<i>N</i>(<i>t</i>). The aftershock accumulation Δ<i>N</i>(<i>t</i>) for both earthquakes is described by the modified Omori Law<span>&nbsp;</span><i>d</i>Δ<i>N</i>/<i>dt</i><span>&nbsp;</span>∝ (1 +<span>&nbsp;</span><i>t</i>/<i>τ</i>)<sup>−<i>p</i></sup><span>&nbsp;</span>with<span>&nbsp;</span><i>p</i><span>&nbsp;</span>= 0.96 and<span>&nbsp;</span><i>τ</i><span>&nbsp;</span>= 0.03 days. Although the Chengkung earthquake involved sinistral, reverse slip on a moderately dipping fault and the Parkfield earthquake right-lateral slip on a near-vertical fault, the earthquakes share an unusual feature: both occurred on faults exhibiting interseismic fault creep at the surface. The source of the observed postseismic deformation appears to be afterslip on the coseismic rupture. The linear relation between<span>&nbsp;</span><i>u</i>(<i>t</i>) +<span>&nbsp;</span><i>u</i><sub>0</sub><span>&nbsp;</span>and<span>&nbsp;</span><i>N</i>(<i>t</i>) suggests that this afterslip also generates the aftershocks. The linear relation between<span>&nbsp;</span><i>u</i>(<i>t</i>) +<span>&nbsp;</span><i>u</i><sub>0</sub><span>&nbsp;</span>and Δ<i>N</i>(<i>t</i>) obtains after neither the 1999<span>&nbsp;</span><i>M</i><span>&nbsp;</span>7.1 Hector Mine (southern California) nor the 1999<span>&nbsp;</span><i>M</i><span>&nbsp;</span>7.6 Chi-Chi (central Taiwan) earthquakes, neither of which occurred on fault segments exhibiting fault creep.</p></div>","language":"English","publisher":"Seismological Society of America","doi":"10.1785/0120070069","issn":"00371106","usgsCitation":"Savage, J., and Yu, S., 2007, Postearthquake relaxation and aftershock accumulation linearly related after the 2003 M 6.5 Chengkung, Taiwan, and the 2004 M 6.0 Parkfield, California, earthquakes: Bulletin of the Seismological Society of America, v. 97, no. 5, p. 1632-1645, https://doi.org/10.1785/0120070069.","productDescription":"14 p.","startPage":"1632","endPage":"1645","numberOfPages":"14","costCenters":[],"links":[{"id":239921,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7e7be4b0c8380cd7a586","contributors":{"authors":[{"text":"Savage, J.C. 0000-0002-5114-7673","orcid":"https://orcid.org/0000-0002-5114-7673","contributorId":102876,"corporation":false,"usgs":true,"family":"Savage","given":"J.C.","affiliations":[],"preferred":false,"id":431263,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Yu, S.-B.","contributorId":101075,"corporation":false,"usgs":true,"family":"Yu","given":"S.-B.","email":"","affiliations":[],"preferred":false,"id":431262,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031389,"text":"70031389 - 2007 - Magnesium and calcium sulfate stabilities and the water budget of Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70031389","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2317,"text":"Journal of Geophysical Research E: Planets","active":true,"publicationSubtype":{"id":10}},"title":"Magnesium and calcium sulfate stabilities and the water budget of Mars","docAbstract":"Magnesium sulfate probably plays a dominant role in the water cycle of Mars away from the polar ice caps through hydration and dehydration reactions. This prominence is due to its abundance, its occurrence in numerous hydration states, and its ability to hydrate and dehydrate rapidly. New experimental studies on the metastable reaction between hexahydrite (MgSO4??6H2O) and starkeyite (MgSO4-4H2O) as a function of temperature and relative humidity, supplemented by recent investigations of the stable reaction between epsomite (MgSO4??7H2O) and hexahydrite and by phase equilibrium calculations, suggest that the most important magnesium sulfate phases involved in the Martian water cycle are MgSO4??11 H2O, epsomite, starkeyite, and possibly kieserite (MgSO4??H2O). Hexahydrite is not predicted to be stable on the surface of Mars. During diurnal variations in temperature and relative humidity, 1 kg of MgSO4 can release or remove from the atmosphere 1.5 kg of H2O by cycling between kieserite and MgSO4??11 H2O. Despite subequal abundances of calcium sulfate, calcium sulfates are not likely to be important in the water cycle of the planet because of sluggish rates of hydration and dehydration and a more limited range of H2O concentrations per kilogram of CaSO4 (0.00 to 0.26 kg kg-1). Modern or recent erosion on Mars attributed to liquid water may be due to the dehydration Of MgSO4??11 H2O because of the inferred abundance and likelihood of occurrence of this phase and its limited stability relative to known variations in temperature and relative humidity.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2007JE002898","issn":"01480227","usgsCitation":"Chou, I., and Seal, R., 2007, Magnesium and calcium sulfate stabilities and the water budget of Mars: Journal of Geophysical Research E: Planets, v. 112, no. 11, https://doi.org/10.1029/2007JE002898.","costCenters":[],"links":[{"id":477118,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2007je002898","text":"Publisher Index Page"},{"id":212590,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2007JE002898"},{"id":240096,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"11","noUsgsAuthors":false,"publicationDate":"2007-11-08","publicationStatus":"PW","scienceBaseUri":"505a4b57e4b0c8380cd69489","contributors":{"authors":[{"text":"Chou, I.-M. 0000-0001-5233-6479","orcid":"https://orcid.org/0000-0001-5233-6479","contributorId":44283,"corporation":false,"usgs":true,"family":"Chou","given":"I.-M.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":431298,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Seal, R.R. II","contributorId":102097,"corporation":false,"usgs":true,"family":"Seal","given":"R.R.","suffix":"II","email":"","affiliations":[],"preferred":false,"id":431299,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031390,"text":"70031390 - 2007 - Summer microhabitat use of fluvial bull trout in Eastern Oregon streams","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70031390","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2886,"text":"North American Journal of Fisheries Management","active":true,"publicationSubtype":{"id":10}},"title":"Summer microhabitat use of fluvial bull trout in Eastern Oregon streams","docAbstract":"The management and recovery of populations of bull trout Salvelinus confluentus requires a comprehensive understanding of habitat use across different systems, life stages, and life history forms. To address these needs, we collected microhabitat use and availability data in three fluvial populations of bull trout in eastern Oregon. We evaluated diel differences in microhabitat use, the consistency of microhabitat use across systems and size-classes based on preference, and our ability to predict bull trout microhabitat use. Diel comparisons suggested bull trout continue to use deeper microhabitats with cover but shift into significantly slower habitats during nighttime periods; however, we observed no discrete differences in substrate use patterns across diel periods. Across life stages, we found that both juvenile and adult bull trout used slow-velocity microhabitats with cover, but the use of specific types varied. Both logistic regression and habitat preference analyses suggested that adult bull trout used deeper habitats than juveniles. Habitat preference analyses suggested that bull trout habitat use was consistent across all three systems, as chi-square tests rejected the null hypotheses that microhabitats were used in proportion to those available (P < 0.0001). Validation analyses indicated that the logistic regression models (juvenile and adult) were effective at predicting bull trout absence across all tests (specificity values = 100%); however, our ability to accurately predict bull trout absence was limited (sensitivity values = 0% across all tests). Our results highlight the limitations of the models used to predict microhabitat use for fish species like bull trout, which occur at naturally low densities. However, our results also demonstrate that bull trout microhabitat use patterns are generally consistent across systems, a pattern that parallels observations at both similar and larger scales and across life history forms. Thus, our results, in combination with previous bull trout habitat studies, provide managers with benchmarks for restoration in highly degraded systems.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"North American Journal of Fisheries Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1577/M06-154.1","issn":"02755947","usgsCitation":"Al-Chokhachy, R., and Budy, P., 2007, Summer microhabitat use of fluvial bull trout in Eastern Oregon streams: North American Journal of Fisheries Management, v. 27, no. 4, p. 1068-1081, https://doi.org/10.1577/M06-154.1.","startPage":"1068","endPage":"1081","numberOfPages":"14","costCenters":[],"links":[{"id":212618,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1577/M06-154.1"},{"id":240132,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-11-01","publicationStatus":"PW","scienceBaseUri":"505b9f3ee4b08c986b31e430","contributors":{"authors":[{"text":"Al-Chokhachy, R.","contributorId":42431,"corporation":false,"usgs":true,"family":"Al-Chokhachy","given":"R.","affiliations":[],"preferred":false,"id":431300,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Budy, P.","contributorId":68091,"corporation":false,"usgs":true,"family":"Budy","given":"P.","affiliations":[],"preferred":false,"id":431301,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030354,"text":"70030354 - 2007 - Red-shouldered hawk occupancy surveys in central Minnesota, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:03","indexId":"70030354","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Red-shouldered hawk occupancy surveys in central Minnesota, USA","docAbstract":"Forest-dwelling raptors are often difficult to detect because many species occur at low density or are secretive. Broadcasting conspecific vocalizations can increase the probability of detecting forest-dwelling raptors and has been shown to be an effective method for locating raptors and assessing their relative abundance. Recent advances in statistical techniques based on presence-absence data use probabilistic arguments to derive probability of detection when it is <1 and to provide a model and likelihood-based method for estimating proportion of sites occupied. We used these maximum-likelihood models with data from red-shouldered hawk (Buteo lineatus) call-broadcast surveys conducted in central Minnesota, USA, in 1994-1995 and 2004-2005. Our objectives were to obtain estimates of occupancy and detection probability 1) over multiple sampling seasons (yr), 2) incorporating within-season time-specific detection probabilities, 3) with call type and breeding stage included as covariates in models of probability of detection, and 4) with different sampling strategies. We visited individual survey locations 2-9 times per year, and estimates of both probability of detection (range = 0.28-0.54) and site occupancy (range = 0.81-0.97) varied among years. Detection probability was affected by inclusion of a within-season time-specific covariate, call type, and breeding stage. In 2004 and 2005 we used survey results to assess the effect that number of sample locations, double sampling, and discontinued sampling had on parameter estimates. We found that estimates of probability of detection and proportion of sites occupied were similar across different sampling strategies, and we suggest ways to reduce sampling effort in a monitoring program.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Wildlife Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2193/2006-013","issn":"00225","usgsCitation":"Henneman, C., McLeod, M., and Andersen, D., 2007, Red-shouldered hawk occupancy surveys in central Minnesota, USA: Journal of Wildlife Management, v. 71, no. 2, p. 526-533, https://doi.org/10.2193/2006-013.","startPage":"526","endPage":"533","numberOfPages":"8","costCenters":[],"links":[{"id":211950,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2193/2006-013"},{"id":239338,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"2","noUsgsAuthors":false,"publicationDate":"2010-12-13","publicationStatus":"PW","scienceBaseUri":"50e4a3a0e4b0e8fec6cdb8de","contributors":{"authors":[{"text":"Henneman, C.","contributorId":64879,"corporation":false,"usgs":true,"family":"Henneman","given":"C.","affiliations":[],"preferred":false,"id":426816,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McLeod, M.A.","contributorId":66437,"corporation":false,"usgs":true,"family":"McLeod","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":426817,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Andersen, D. E.","contributorId":27816,"corporation":false,"usgs":true,"family":"Andersen","given":"D. E.","affiliations":[],"preferred":false,"id":426815,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":79828,"text":"sir20065323 - 2007 - Hydrology and Flood Profiles of Duck Creek and Jordan Creek Downstream from Egan Drive, Juneau, Alaska","interactions":[],"lastModifiedDate":"2012-02-02T00:14:13","indexId":"sir20065323","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2006-5323","title":"Hydrology and Flood Profiles of Duck Creek and Jordan Creek Downstream from Egan Drive, Juneau, Alaska","docAbstract":"Hydrologic and hydraulic updates for Duck Creek and the lower part of Jordan Creek in Juneau, Alaska, included computation of new estimates of peak streamflow magnitudes and new water-surface profiles for the 10-, 50-, 100-, and 500-year floods. Computations for the 2-, 5-, 10-, 25-, 50-, 100-, 200-, and 500-year recurrence interval flood magnitudes for both streams used data from U.S. Geological Survey stream-gaging stations weighted with regional regression equations for southeast Alaska. The study area for the hydraulic model consisted of three channels: Duck Creek from Taku Boulevard near the stream's headwaters to Radcliffe Road near the end of the Juneau International Airport runway, an unnamed tributary to Duck Creek from Valley Boulevard to its confluence with Duck Creek, and Jordan Creek from a pedestrian bridge upstream from Egan Drive to Crest Street at Juneau International Airport. Field surveys throughout the study area provided channel geometry for 206 cross sections, and geometric and hydraulic characteristics for 29 culverts and 15 roadway, driveway, or pedestrian bridges. Hydraulic modeling consisted of application of the U.S. Army Corps of Engineers' Hydrologic Engineering Center River Analysis System (HEC-RAS) for steady-state flow at the selected recurrence intervals using an assumed high tide of 20 feet and roughness coefficients refined by calibration to measured water-surface elevations from a 2- to 5-year flood that occurred on November 21, 2005. Model simulation results identify inter-basin flow from Jordan Creek to the southeast at Egan Drive and from Duck Creek to Jordan Creek downstream from Egan Drive at selected recurrence intervals.","language":"English","publisher":"Geological Survey (U.S.)","doi":"10.3133/sir20065323","collaboration":"Prepared in cooperation with the City and Borough of Juneau","usgsCitation":"Curran, J.H., 2007, Hydrology and Flood Profiles of Duck Creek and Jordan Creek Downstream from Egan Drive, Juneau, Alaska: U.S. Geological Survey Scientific Investigations Report 2006-5323, vi, 36 p., https://doi.org/10.3133/sir20065323.","productDescription":"vi, 36 p.","startPage":"0","endPage":"0","additionalOnlineFiles":"Y","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":190863,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9524,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2006/5323/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ab0e4b07f02db66d587","contributors":{"authors":[{"text":"Curran, Janet H. 0000-0002-3899-6275 jcurran@usgs.gov","orcid":"https://orcid.org/0000-0002-3899-6275","contributorId":690,"corporation":false,"usgs":true,"family":"Curran","given":"Janet","email":"jcurran@usgs.gov","middleInitial":"H.","affiliations":[{"id":120,"text":"Alaska Science Center Water","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":290945,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70031402,"text":"70031402 - 2007 - Butterfly responses to prairie restoration through fire and grazing","interactions":[],"lastModifiedDate":"2012-03-12T17:21:15","indexId":"70031402","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1015,"text":"Biological Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Butterfly responses to prairie restoration through fire and grazing","docAbstract":"The development of land for modern agriculture has resulted in losses of native prairie habitat. The small, isolated patches of prairie habitat that remain are threatened by fire suppression, overgrazing, and invasion by non-native species. We evaluated the effects of three restoration practices (grazing only, burning only, and burning and grazing) on the vegetation characteristics and butterfly communities of remnant prairies. Total butterfly abundance was highest on prairies that were managed with burning and grazing and lowest on those that were only burned. Butterfly species richness did not differ among any of the restoration practices. Butterfly species diversity was highest on sites that were only burned. Responses of individual butterfly species to restoration practices were highly variable. In the best predictive regression model, total butterfly abundance was negatively associated with the percent cover of bare ground and positively associated with the percent cover of forbs. Canonical correspondence analysis revealed that sites with burned only and grazed only practices could be separated based on their butterfly community composition. Butterfly communities in each of the three restoration practices are equally species rich but different practices yield compositionally different butterfly communities. Because of this variation in butterfly species responses to different restoration practices, there is no single practice that will benefit all species or even all species within habitat-specialist or habitat-generalist habitat guilds. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.biocon.2007.07.027","issn":"00063207","usgsCitation":"Vogel, J.A., Debinski, D.M., Koford, R.R., and Miller, J., 2007, Butterfly responses to prairie restoration through fire and grazing: Biological Conservation, v. 140, no. 1-2, p. 78-90, https://doi.org/10.1016/j.biocon.2007.07.027.","startPage":"78","endPage":"90","numberOfPages":"13","costCenters":[],"links":[{"id":477166,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1016/j.biocon.2007.07.027","text":"External Repository"},{"id":239754,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212290,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biocon.2007.07.027"}],"volume":"140","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f2bde4b0c8380cd4b326","contributors":{"authors":[{"text":"Vogel, Jennifer A.","contributorId":9463,"corporation":false,"usgs":true,"family":"Vogel","given":"Jennifer","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":431349,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Debinski, Diane M.","contributorId":25361,"corporation":false,"usgs":true,"family":"Debinski","given":"Diane","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":431351,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Koford, Rolf R.","contributorId":16347,"corporation":false,"usgs":true,"family":"Koford","given":"Rolf","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":431350,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Miller, J.R.","contributorId":86555,"corporation":false,"usgs":true,"family":"Miller","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":431352,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031416,"text":"70031416 - 2007 - Influence of light and temperature on Prochlorococcus ecotype distributions in the Atlantic Ocean","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031416","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2620,"text":"Limnology and Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Influence of light and temperature on Prochlorococcus ecotype distributions in the Atlantic Ocean","docAbstract":"In a focused analysis of Prochlorococcus population structure in the western North Atlantic, we found that the relative abundances of ecotypes varied significantly with depth and, at seasonally stratified locations, with degree of vertical mixing. More limited regional variation was observed (e.g., Sargasso Sea, Gulf Stream, continental slope, and equatorial current), and local patchiness was minimal. Modeling of a combined North and South Atlantic data set revealed significant, independent effects of light and temperature on ecotype abundances, suggesting that they are key ecological determinants that establish the different habitat ranges of the physiologically and genetically distinct ecotypes. This was in sharp contrast with the genus Synechococcus, whose total abundance was related to light but did not vary in a predictable way with temperature. Comparisons of field abundances with growth characteristics of cultured isolates of Prochlorococcus suggested the presence of ecotype-specific thermal and light adaptations that could be responsible for the distinct distribution patterns of the four dominant ecotypes. Significantly, we discovered that one \"low-light-adapted\" ecotype, eNATL2A, can thrive in deeply mixed surface layers, whereas another, eMIT9313, cannot, even though they have the same growth optimum for (low) light. ?? 2007, by the American Society of Limnology and Oceanography, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Limnology and Oceanography","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"00243590","usgsCitation":"Zinser, E., Johnson, Z., Coe, A., Karaca, E., Veneziano, D., and Chisholm, S., 2007, Influence of light and temperature on Prochlorococcus ecotype distributions in the Atlantic Ocean: Limnology and Oceanography, v. 52, no. 5, p. 2205-2220.","startPage":"2205","endPage":"2220","numberOfPages":"16","costCenters":[],"links":[{"id":239990,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"52","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a3b4ee4b0c8380cd623ee","contributors":{"authors":[{"text":"Zinser, E.R.","contributorId":98946,"corporation":false,"usgs":true,"family":"Zinser","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":431415,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnson, Z.I.","contributorId":12696,"corporation":false,"usgs":true,"family":"Johnson","given":"Z.I.","email":"","affiliations":[],"preferred":false,"id":431410,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Coe, A.","contributorId":79300,"corporation":false,"usgs":true,"family":"Coe","given":"A.","email":"","affiliations":[],"preferred":false,"id":431413,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Karaca, E.","contributorId":81696,"corporation":false,"usgs":true,"family":"Karaca","given":"E.","affiliations":[],"preferred":false,"id":431414,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Veneziano, D.","contributorId":55641,"corporation":false,"usgs":true,"family":"Veneziano","given":"D.","email":"","affiliations":[],"preferred":false,"id":431411,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Chisholm, S.W.","contributorId":70192,"corporation":false,"usgs":true,"family":"Chisholm","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":431412,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030212,"text":"70030212 - 2007 - Sub-sampling genetic data to estimate black bear population size: A case study","interactions":[],"lastModifiedDate":"2021-06-11T18:04:08.647347","indexId":"70030212","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3671,"text":"Ursus","active":true,"publicationSubtype":{"id":10}},"title":"Sub-sampling genetic data to estimate black bear population size: A case study","docAbstract":"<p>Costs for genetic analysis of hair samples collected for individual identification of bears average approximately US$50 [2004] per sample. This can easily exceed budgetary allowances for large-scale studies or studies of high-density bear populations. We used 2 genetic datasets from 2 areas in the southeastern United States to explore how reducing costs of analysis by sub-sampling affected precision and accuracy of resulting population estimates. We used several sub-sampling scenarios to create subsets of the full datasets and compared summary statistics, population estimates, and precision of estimates generated from these subsets to estimates generated from the complete datasets. Our results suggested that bias and precision of estimates improved as the proportion of total samples used increased, and heterogeneity models (e.g., <i>M<sub>h</sub></i><sub><span>[</span>C<span>hao]</span></sub>) were more robust to reduced sample sizes than other models (e.g., behavior models). We recommend that only high-quality samples (&gt;5 hair follicles) be used when budgets are constrained, and efforts should be made to maximize capture and recapture rates in the field.</p>","largerWorkTitle":"Ursus","language":"English","publisher":"BioOne Complete","doi":"10.2192/1537-6176(2007)18[179:SGDTEB]2.0.CO;2","usgsCitation":"Tredick, C., Vaughan, M., Stauffer, D., Simek, S., and Eason, T., 2007, Sub-sampling genetic data to estimate black bear population size: A case study: Ursus, v. 18, no. 2, p. 179-188, https://doi.org/10.2192/1537-6176(2007)18[179:SGDTEB]2.0.CO;2.","productDescription":"10 p.","startPage":"179","endPage":"188","costCenters":[],"links":[{"id":239293,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","otherGeospatial":"southeastern United States","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -94.04296874999999,\n              31.353636941500987\n            ],\n            [\n              -93.515625,\n              29.38217507514529\n            ],\n            [\n              -89.56054687499999,\n              29.075375179558346\n            ],\n            [\n              -85.69335937499999,\n              29.53522956294847\n            ],\n            [\n              -83.056640625,\n              27.21555620902969\n            ],\n            [\n              -80.947265625,\n              24.926294766395593\n            ],\n            [\n              -79.541015625,\n              26.27371402440643\n            ],\n            [\n              -80.68359375,\n              31.12819929911196\n            ],\n            [\n              -75.41015624999999,\n              35.67514743608467\n            ],\n            [\n              -77.080078125,\n              39.095962936305476\n            ],\n            [\n              -79.365234375,\n              38.47939467327645\n            ],\n            [\n              -81.5625,\n              37.23032838760387\n            ],\n            [\n              -84.0234375,\n              39.027718840211605\n            ],\n            [\n              -87.71484375,\n              37.78808138412046\n            ],\n            [\n              -89.384765625,\n              36.527294814546245\n            ],\n            [\n              -94.5703125,\n              36.59788913307022\n            ],\n            [\n              -94.04296874999999,\n              31.353636941500987\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"18","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9cf6e4b08c986b31d563","contributors":{"authors":[{"text":"Tredick, C.A.","contributorId":57659,"corporation":false,"usgs":true,"family":"Tredick","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":426145,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vaughan, M.R.","contributorId":74925,"corporation":false,"usgs":true,"family":"Vaughan","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":426146,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stauffer, D.F.","contributorId":9317,"corporation":false,"usgs":true,"family":"Stauffer","given":"D.F.","email":"","affiliations":[],"preferred":false,"id":426143,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Simek, S.L.","contributorId":13033,"corporation":false,"usgs":true,"family":"Simek","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":426144,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Eason, T.","contributorId":106705,"corporation":false,"usgs":true,"family":"Eason","given":"T.","affiliations":[],"preferred":false,"id":426147,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030186,"text":"70030186 - 2007 - Potential effects of regional pumpage on groundwater age distribution","interactions":[],"lastModifiedDate":"2018-10-11T19:04:32","indexId":"70030186","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Potential effects of regional pumpage on groundwater age distribution","docAbstract":"<p><span>Groundwater ages estimated from environmental tracers can help calibrate groundwater flow models. Groundwater age represents a mixture of traveltimes, with the distribution of ages determined by the detailed structure of the flow field, which can be prone to significant transient variability. Effects of pumping on age distribution were assessed using direct age simulation in a hypothetical layered aquifer system. A steady state predevelopment age distribution was computed first. A well field was then introduced, and pumpage caused leakage into the confined aquifer of older water from an overlying confining unit. Large changes in simulated groundwater ages occurred in both the aquifer and the confining unit at high pumping rates, and the effects propagated a substantial distance downgradient from the wells. The range and variance of ages contributing to the well increased substantially during pumping. The results suggest that the groundwater age distribution in developed aquifers may be affected by transient leakage from low‐permeability material, such as confining units, under certain hydrogeologic conditions.</span></p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006WR004865","usgsCitation":"Zinn, B.A., and Konikow, L.F., 2007, Potential effects of regional pumpage on groundwater age distribution: Water Resources Research, v. 43, no. 6, W06418; 17 p., https://doi.org/10.1029/2006WR004865.","productDescription":"W06418; 17 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477032,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006wr004865","text":"Publisher Index Page"},{"id":239431,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"6","noUsgsAuthors":false,"publicationDate":"2007-06-21","publicationStatus":"PW","scienceBaseUri":"505a7edde4b0c8380cd7a7c9","contributors":{"authors":[{"text":"Zinn, Brendan A.","contributorId":102953,"corporation":false,"usgs":true,"family":"Zinn","given":"Brendan","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":426060,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Konikow, Leonard F. 0000-0002-0940-3856 lkonikow@usgs.gov","orcid":"https://orcid.org/0000-0002-0940-3856","contributorId":158,"corporation":false,"usgs":true,"family":"Konikow","given":"Leonard","email":"lkonikow@usgs.gov","middleInitial":"F.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true}],"preferred":true,"id":426059,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031418,"text":"70031418 - 2007 - Study of a prehistoric landslide using seismic reflection methods integrated with geological data in the Wasatch Mountains, Utah, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:13","indexId":"70031418","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1517,"text":"Engineering Geology","active":true,"publicationSubtype":{"id":10}},"title":"Study of a prehistoric landslide using seismic reflection methods integrated with geological data in the Wasatch Mountains, Utah, USA","docAbstract":"An integration of geological and geophysical techniques characterizes the internal and basal structure of a landslide along the western margin of the Wasatch Mountains in northern Utah, USA. The study area is within a region of planned and continuing residential development. The Little Valley Landslide is a prehistoric landslide as old as 13??ka B.P. Drilling and trenching at the site indicate that the landslide consists of chaotic and disturbed weathered volcanic material derived from Tertiary age volcanic rocks that comprise a great portion of the Wasatch Range. Five short high-resolution common mid-point seismic reflection profiles over selected portions of the site examine the feasibility of using seismic reflection to study prehistoric landslides in the Wasatch Mountain region. Due to the expected complexity of the near-surface geology, we have pursued an experimental approach in the data processing, examining the effects of muting first arrivals, frequency filtering, model-based static corrections, and seismic migration. The results provide a framework for understanding the overall configuration of the landslide, its basal (failure) surface, and the structure immediately underlying this surface. A glide surface or de??collement is interpreted to underlie the landslide suggesting a large mass movement. The interpretation of a glide surface is based on the onset of coherent reflectivity, calibrated by information from a borehole located along one of the seismic profiles. The glide surface is deepest in the center portion of the landslide and shallows up slope, suggesting a trough-like feature. This study shows that seismic reflection techniques can be successfully used in complex alpine landslide regions to (1) provide a framework in which to link geological data and (2) reduce the need for an extensive trenching and drilling program. ?? 2007 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Engineering Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.enggeo.2007.08.006","issn":"00137952","usgsCitation":"Tingey, B., McBride, J., Thompson, T., Stephenson, W.J., South, J., and Bushman, M., 2007, Study of a prehistoric landslide using seismic reflection methods integrated with geological data in the Wasatch Mountains, Utah, USA: Engineering Geology, v. 95, no. 1-2, p. 1-29, https://doi.org/10.1016/j.enggeo.2007.08.006.","startPage":"1","endPage":"29","numberOfPages":"29","costCenters":[],"links":[{"id":212529,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.enggeo.2007.08.006"},{"id":240026,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"95","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9cd1e4b08c986b31d4d1","contributors":{"authors":[{"text":"Tingey, B.E.","contributorId":73397,"corporation":false,"usgs":true,"family":"Tingey","given":"B.E.","email":"","affiliations":[],"preferred":false,"id":431423,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McBride, J.H.","contributorId":99712,"corporation":false,"usgs":true,"family":"McBride","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":431427,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thompson, T.J.","contributorId":86969,"corporation":false,"usgs":true,"family":"Thompson","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":431425,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stephenson, W. J.","contributorId":87982,"corporation":false,"usgs":true,"family":"Stephenson","given":"W.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":431426,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"South, J.V.","contributorId":72188,"corporation":false,"usgs":true,"family":"South","given":"J.V.","email":"","affiliations":[],"preferred":false,"id":431422,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bushman, M.","contributorId":75335,"corporation":false,"usgs":true,"family":"Bushman","given":"M.","email":"","affiliations":[],"preferred":false,"id":431424,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031513,"text":"70031513 - 2007 - MODIS imagery as a tool for synoptic water quality assessments in the southern California coastal ocean","interactions":[],"lastModifiedDate":"2023-07-05T12:14:26.557776","indexId":"70031513","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"MODIS imagery as a tool for synoptic water quality assessments in the southern California coastal ocean","docAbstract":"The dynamics of rainstorm plumes in the coastal waters of southern California was studied during the Bight'03 Regional Water Quality Program surveys. Measurements of surface salinity and bacterial counts collected from research vessels were compared to MODIS-Aqua satellite imagery. The spectra of normalized water-leaving radiation (nLw) were different in plumes and ambient ocean waters, enabling plumes discrimination and plume area size assessments from remotely-sensed data. The plume/ocean nLw differences (i.e., plume optical signatures) were most evident during first days after the rainstorm over the San Pedro shelf and in the San Diego region and less evident in Santa Monica Bay, where suspended sediments concentration in discharged water was lower than in other regions. In the Ventura area, plumes contained more suspended sediments than in other regions, but the grid of ship-based stations covered only a small part of the freshwater plume and was insufficient to reveal the differences between the plume and ocean optical signatures. The accuracy of plume area assessments from satellite imagery was not high (77% on average), seemingly because of inexactitude in satellite data processing. Nevertheless, satellite imagery is a useful tool for the estimation of the extent of polluted plumes, which is hardly achievable by contact methods.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of SPIE - The International Society for Optical Engineering","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Coastal Ocean Remote Sensing","conferenceDate":"August 26-27, 2007","conferenceLocation":"San Diego, CA","language":"English","publisher":"SPIE","doi":"10.1117/12.732754","issn":"0277786X","isbn":"9780819468284","usgsCitation":"Nezlin, N., DiGiacomo, P., Jones, B., Reifel, K., Warrick, J., Johnson, S., and Mengel, M., 2007, MODIS imagery as a tool for synoptic water quality assessments in the southern California coastal ocean, <i>in</i> Proceedings of SPIE - The International Society for Optical Engineering, v. 6680, San Diego, CA, August 26-27, 2007, https://doi.org/10.1117/12.732754.","costCenters":[],"links":[{"id":239794,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6680","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4ae6e4b0c8380cd69127","contributors":{"authors":[{"text":"Nezlin, N.P.","contributorId":77644,"corporation":false,"usgs":true,"family":"Nezlin","given":"N.P.","affiliations":[],"preferred":false,"id":431873,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"DiGiacomo, P.M.","contributorId":39501,"corporation":false,"usgs":true,"family":"DiGiacomo","given":"P.M.","affiliations":[],"preferred":false,"id":431870,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jones, B.H.","contributorId":96810,"corporation":false,"usgs":true,"family":"Jones","given":"B.H.","email":"","affiliations":[],"preferred":false,"id":431875,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Reifel, K.M.","contributorId":49327,"corporation":false,"usgs":true,"family":"Reifel","given":"K.M.","affiliations":[],"preferred":false,"id":431871,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Warrick, J.A.","contributorId":53503,"corporation":false,"usgs":true,"family":"Warrick","given":"J.A.","affiliations":[],"preferred":false,"id":431872,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Johnson, S.C.","contributorId":93008,"corporation":false,"usgs":true,"family":"Johnson","given":"S.C.","email":"","affiliations":[],"preferred":false,"id":431874,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Mengel, M.J.","contributorId":21267,"corporation":false,"usgs":true,"family":"Mengel","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":431869,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}}
]}