{"pageNumber":"792","pageRowStart":"19775","pageSize":"25","recordCount":46882,"records":[{"id":70035010,"text":"70035010 - 2009 - How does landscape structure influence catchment transit time across different geomorphic provinces?","interactions":[],"lastModifiedDate":"2012-03-12T17:21:56","indexId":"70035010","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1924,"text":"Hydrological Processes","active":true,"publicationSubtype":{"id":10}},"title":"How does landscape structure influence catchment transit time across different geomorphic provinces?","docAbstract":"Despite an increasing number of empirical investigations of catchment transit times (TTs), virtually all are based on individual catchments and there are few attempts to synthesize understanding across different geographical regions. Uniquely, this paper examines data from 55 catchments in five geomorphic provinces in northern temperate regions (Scotland, United States of America and Sweden). The objective is to understand how the role of catchment topography as a control on the TTs differs in contrasting geographical settings. Catchment inverse transit time proxies (ITTPs) were inferred by a simple metric of isotopic tracer damping, using the ratio of standard deviation of ??18O in streamwater to the standard deviation of ??18O in precipitation. Quantitative landscape analysis was undertaken to characterize the catchments according to hydrologically relevant topographic indices that could be readily determined from a digital terrain model (DTM). The nature of topographic controls on transit times varied markedly in different geomorphic regions. In steeper montane regions, there are stronger gravitational influences on hydraulic gradients and TTs tend to be lower in the steepest catchments. In provinces where terrain is more subdued, direct topographic control weakened; in particular, where flatter areas with less permeable soils give rise to overland flow and lower TTs. The steeper slopes within this flatter terrain appear to have a greater coverage of freely draining soils, which increase sub-surface flow, therefore increasing TTs. Quantitative landscape analysis proved a useful tool for intercatchment comparison. However, the critical influence of sub-surface permeability and connectivity may limit the transferability of predictive tools of hydrological function based on topographic parameters alone. Copyright ?? 2009 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrological Processes","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/hyp.7240","issn":"08856087","usgsCitation":"Tetzlaff, D., Seibert, J., McGuire, K., Laudon, H., Burns, D.A., Dunn, S., and Soulsby, C., 2009, How does landscape structure influence catchment transit time across different geomorphic provinces?: Hydrological Processes, v. 23, no. 6, p. 945-953, https://doi.org/10.1002/hyp.7240.","startPage":"945","endPage":"953","numberOfPages":"9","costCenters":[],"links":[{"id":215291,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/hyp.7240"},{"id":243085,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"6","noUsgsAuthors":false,"publicationDate":"2009-01-28","publicationStatus":"PW","scienceBaseUri":"505a3249e4b0c8380cd5e6a0","contributors":{"authors":[{"text":"Tetzlaff, D.","contributorId":106622,"corporation":false,"usgs":true,"family":"Tetzlaff","given":"D.","email":"","affiliations":[],"preferred":false,"id":448870,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Seibert, J.","contributorId":37513,"corporation":false,"usgs":true,"family":"Seibert","given":"J.","email":"","affiliations":[],"preferred":false,"id":448865,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McGuire, K.J.","contributorId":88943,"corporation":false,"usgs":true,"family":"McGuire","given":"K.J.","email":"","affiliations":[],"preferred":false,"id":448868,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Laudon, H.","contributorId":82444,"corporation":false,"usgs":false,"family":"Laudon","given":"H.","email":"","affiliations":[],"preferred":false,"id":448867,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Burns, Douglas A. 0000-0001-6516-2869","orcid":"https://orcid.org/0000-0001-6516-2869","contributorId":29450,"corporation":false,"usgs":true,"family":"Burns","given":"Douglas","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":448864,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Dunn, S.M.","contributorId":93177,"corporation":false,"usgs":true,"family":"Dunn","given":"S.M.","email":"","affiliations":[],"preferred":false,"id":448869,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Soulsby, C.","contributorId":40713,"corporation":false,"usgs":true,"family":"Soulsby","given":"C.","affiliations":[],"preferred":false,"id":448866,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70035018,"text":"70035018 - 2009 - Ultraviolet absorbance as a proxy for total dissolved mercury in streams","interactions":[],"lastModifiedDate":"2018-10-05T08:54:20","indexId":"70035018","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1555,"text":"Environmental Pollution","active":true,"publicationSubtype":{"id":10}},"title":"Ultraviolet absorbance as a proxy for total dissolved mercury in streams","docAbstract":"

Stream water samples were collected over a range of hydrologic and seasonal conditions at three forested watersheds in the northeastern USA. Samples were analyzed for dissolved total mercury (THgd), DOC concentration and DOC composition, and UV254 absorbance across the three sites over different seasons and flow conditions. Pooling data from all sites, we found a strong positive correlation of THgd to DOC (r2 = 0.87), but progressively stronger correlations of THgd with the hydrophobic acid fraction (HPOA) of DOC (r2 = 0.91) and with UV254 absorbance (r2 = 0.92). The strength of the UV254 absorbance-THgd relationship suggests that optical properties associated with dissolved organic matter may be excellent proxies for THgd concentration in these streams. Ease of sample collection and analysis, the potential application of in-situ optical sensors, and the possibility for intensive monitoring over the hydrograph make this an effective, inexpensive approach to estimate THgd flux in drainage waters.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.envpol.2009.01.031","issn":"02697491","usgsCitation":"Dittman, J., Shanley, J.B., Driscoll, C.T., Aiken, G., Chalmers, A., and Towse, J., 2009, Ultraviolet absorbance as a proxy for total dissolved mercury in streams: Environmental Pollution, v. 157, no. 6, p. 1953-1956, https://doi.org/10.1016/j.envpol.2009.01.031.","productDescription":"4 p.","startPage":"1953","endPage":"1956","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":243250,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215443,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.envpol.2009.01.031"}],"volume":"157","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bbc0be4b08c986b3289c4","contributors":{"authors":[{"text":"Dittman, J.A.","contributorId":67745,"corporation":false,"usgs":true,"family":"Dittman","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":448905,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shanley, J. B.","contributorId":52226,"corporation":false,"usgs":true,"family":"Shanley","given":"J.","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":448903,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Driscoll, C. T.","contributorId":47530,"corporation":false,"usgs":false,"family":"Driscoll","given":"C.","email":"","middleInitial":"T.","affiliations":[],"preferred":false,"id":448902,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Aiken, G. R. 0000-0001-8454-0984","orcid":"https://orcid.org/0000-0001-8454-0984","contributorId":14452,"corporation":false,"usgs":true,"family":"Aiken","given":"G. R.","affiliations":[],"preferred":false,"id":448900,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Chalmers, A.T. 0000-0002-5199-8080","orcid":"https://orcid.org/0000-0002-5199-8080","contributorId":63576,"corporation":false,"usgs":true,"family":"Chalmers","given":"A.T.","affiliations":[],"preferred":false,"id":448904,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Towse, J.E.","contributorId":46788,"corporation":false,"usgs":true,"family":"Towse","given":"J.E.","affiliations":[],"preferred":false,"id":448901,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70036691,"text":"70036691 - 2009 - Evidence that pairing with genetically similar mates is maladaptive in a monogamous bird","interactions":[],"lastModifiedDate":"2020-11-03T15:42:13.997327","indexId":"70036691","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":955,"text":"BMC Evolutionary Biology","active":true,"publicationSubtype":{"id":10}},"title":"Evidence that pairing with genetically similar mates is maladaptive in a monogamous bird","docAbstract":"

Background

Evidence of multiple genetic criteria of mate choice is accumulating in numerous taxa. In many species, females have been shown to pair with genetically dissimilar mates or with extra-pair partners that are more genetically compatible than their social mates, thereby increasing their offsprings' heterozygosity which often correlates with offspring fitness. While most studies have focused on genetically promiscuous species, few studies have addressed genetically monogamous species, in which mate choice tends to be mutual.

Results

Here, we used microsatellite markers to assess individual global heterozygosity and genetic similarity of pairs in a socially and genetically monogamous seabird, the black-legged kittiwake Rissa tridactyla. We found that pairs were more genetically dissimilar than expected by chance. We also identified fitness costs of breeding with genetically similar partners: (i) genetic similarity of pairs was negatively correlated with the number of chicks hatched, and (ii) offspring heterozygosity was positively correlated with growth rate and survival.

Conclusion

These findings provide evidence that breeders in a genetically monogamous species may avoid the fitness costs of reproducing with a genetically similar mate. In such species that lack the opportunity to obtain extra-pair fertilizations, mate choice may therefore be under high selective pressure.

","language":"English","publisher":"BMC","doi":"10.1186/1471-2148-9-147","usgsCitation":"Mulard, H., Danchin, E., Talbot, S.L., Ramey, A.M., Hatch, S.A., White, J., Helfenstein, F., and Wagner, R., 2009, Evidence that pairing with genetically similar mates is maladaptive in a monogamous bird: BMC Evolutionary Biology, v. 9, no. 1, 147, 12 p., https://doi.org/10.1186/1471-2148-9-147.","productDescription":"147, 12 p.","costCenters":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"links":[{"id":476305,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1186/1471-2148-9-147","text":"Publisher Index Page"},{"id":245821,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Middleton Island","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -146.41616821289062,\n 59.39442265678515\n ],\n [\n -146.2451934814453,\n 59.39442265678515\n ],\n [\n -146.2451934814453,\n 59.47543020423106\n ],\n [\n -146.41616821289062,\n 59.47543020423106\n ],\n [\n -146.41616821289062,\n 59.39442265678515\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"9","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0d73e4b0c8380cd53015","contributors":{"authors":[{"text":"Mulard, Herve","contributorId":104602,"corporation":false,"usgs":false,"family":"Mulard","given":"Herve","email":"","affiliations":[],"preferred":false,"id":457388,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Danchin, E.","contributorId":89635,"corporation":false,"usgs":true,"family":"Danchin","given":"E.","affiliations":[],"preferred":false,"id":457387,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Talbot, Sandra L. 0000-0002-3312-7214 stalbot@usgs.gov","orcid":"https://orcid.org/0000-0002-3312-7214","contributorId":140512,"corporation":false,"usgs":true,"family":"Talbot","given":"Sandra","email":"stalbot@usgs.gov","middleInitial":"L.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":457382,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ramey, Andrew M. 0000-0002-3601-8400 aramey@usgs.gov","orcid":"https://orcid.org/0000-0002-3601-8400","contributorId":1872,"corporation":false,"usgs":true,"family":"Ramey","given":"Andrew","email":"aramey@usgs.gov","middleInitial":"M.","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":457386,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hatch, Scott A. 0000-0002-0064-8187 shatch@usgs.gov","orcid":"https://orcid.org/0000-0002-0064-8187","contributorId":2625,"corporation":false,"usgs":true,"family":"Hatch","given":"Scott","email":"shatch@usgs.gov","middleInitial":"A.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true}],"preferred":true,"id":457383,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"White, J.F.","contributorId":36369,"corporation":false,"usgs":true,"family":"White","given":"J.F.","affiliations":[],"preferred":false,"id":457381,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Helfenstein, F.","contributorId":63922,"corporation":false,"usgs":true,"family":"Helfenstein","given":"F.","email":"","affiliations":[],"preferred":false,"id":457384,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Wagner, R.H.","contributorId":69276,"corporation":false,"usgs":true,"family":"Wagner","given":"R.H.","email":"","affiliations":[],"preferred":false,"id":457385,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70036916,"text":"70036916 - 2009 - Spatial and temporal spawning dynamics of native westslope cutthroat trout, Oncorhynchus clarkii lewisi, introduced rainbow trout, Oncorhynchus mykiss, and their hybrids","interactions":[],"lastModifiedDate":"2012-03-12T17:22:00","indexId":"70036916","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1169,"text":"Canadian Journal of Fisheries and Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Spatial and temporal spawning dynamics of native westslope cutthroat trout, Oncorhynchus clarkii lewisi, introduced rainbow trout, Oncorhynchus mykiss, and their hybrids","docAbstract":"We used radiotelemetry to assess spatial and temporal spawning distributions of native westslope cutthroat trout (Oncorhynchus clarkii lewisi; WCT), introduced rainbow trout (Oncorhynchus mykiss; RBT), and their hybrids in the upper Flathead River system, Montana (USA) and British Columbia (Canada), from 2000 to 2007. Radio-tagged trout (N = 125) moved upriver towards spawning sites as flows increased during spring runoff and spawned in 29 tributaries. WCT migrated greater distances and spawned in headwater streams during peak flows and as flows declined, whereas RBT and RBT hybrids (backcrosses to RBT) spawned earlier during increasing flows and lower in the system. WCT hybrids (backcrosses to WCT) spawned intermediately in time and space to WCT and RBT and RBT hybrids. Both hybrid groups and RBT, however, spawned over time periods that produced temporal overlap with spawning WCT in most years. Our data indicate that hybridization is spreading via long-distance movements of individuals with high amounts of RBT admixture into WCT streams and stepping-stone invasion at small scales by later generation backcrosses. This study provides evidence that hybridization increases the likelihood of reproductive overlap in time and space, promoting extinction by introgression, and that the spread of hybridization is likely to continue if hybrid source populations are not reduced or eliminated.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Canadian Journal of Fisheries and Aquatic Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1139/F09-073","issn":"0706652X","usgsCitation":"Muhlfeld, C., McMahon, T., Belcer, D., and Kershner, J.L., 2009, Spatial and temporal spawning dynamics of native westslope cutthroat trout, Oncorhynchus clarkii lewisi, introduced rainbow trout, Oncorhynchus mykiss, and their hybrids: Canadian Journal of Fisheries and Aquatic Sciences, v. 66, no. 7, p. 1153-1168, https://doi.org/10.1139/F09-073.","startPage":"1153","endPage":"1168","numberOfPages":"16","costCenters":[],"links":[{"id":217636,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1139/F09-073"},{"id":245593,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"66","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9446e4b08c986b31a992","contributors":{"authors":[{"text":"Muhlfeld, C.C.","contributorId":97850,"corporation":false,"usgs":true,"family":"Muhlfeld","given":"C.C.","affiliations":[],"preferred":false,"id":458461,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McMahon, T.E.","contributorId":56463,"corporation":false,"usgs":true,"family":"McMahon","given":"T.E.","affiliations":[],"preferred":false,"id":458460,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Belcer, D.","contributorId":100659,"corporation":false,"usgs":true,"family":"Belcer","given":"D.","email":"","affiliations":[],"preferred":false,"id":458463,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kershner, J. L.","contributorId":100322,"corporation":false,"usgs":true,"family":"Kershner","given":"J.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":458462,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70036914,"text":"70036914 - 2009 - A regional soil and sediment geochemical study in northern California","interactions":[],"lastModifiedDate":"2012-03-12T17:22:00","indexId":"70036914","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"A regional soil and sediment geochemical study in northern California","docAbstract":"Regional-scale variations in soil geochemistry were investigated in a 20,000-km2 study area in northern California that includes the western slope of the Sierra Nevada, the southern Sacramento Valley and the northern Coast Ranges. Over 1300 archival soil samples collected from the late 1970s to 1980 in El Dorado, Placer, Sutter, Sacramento, Yolo and Solano counties were analyzed for 42 elements by inductively coupled plasma-atomic emission spectrometry and inductively coupled plasma-mass spectrometry following a near-total dissolution. These data were supplemented by analysis of more than 500 stream-sediment samples from higher elevations in the Sierra Nevada from the same study site. The relatively high-density data (1 sample per 15 km2 for much of the study area) allows the delineation of regional geochemical patterns and the identification of processes that produced these patterns. The geochemical results segregate broadly into distinct element groupings whose distribution reflects the interplay of geologic, hydrologic, geomorphic and anthropogenic factors. One such group includes elements associated with mafic and ultramafic rocks including Cr, Ni, V, Co, Cu and Mg. Using Cr as an example, elevated concentrations occur in soils overlying ultramafic rocks in the foothills of the Sierra Nevada (median Cr = 160 mg/kg) as well as in the northern Coast Ranges. Low concentrations of these elements occur in soils located further upslope in the Sierra Nevada overlying Tertiary volcanic, metasedimentary and plutonic rocks (granodiorite and diorite). Eastern Sacramento Valley soil samples, defined as those located east of the Sacramento River, are lower in Cr (median Cr = 84 mg/kg), and are systematically lower in this suite compared to soils from the west side of the Sacramento Valley (median Cr = 130 mg/kg). A second group of elements showing a coherent pattern, including Ca, K, Sr and REE, is derived from relatively silicic rocks types. This group occurs at elevated concentrations in soils overlying volcanic and plutonic rocks at higher elevations in the Sierras (e.g. median La = 28 mg/kg) and the east side of the Sacramento Valley (median 20 mg/kg) compared to soils overlying ultramafic rocks in the Sierra Nevada foothills (median 15 mg/kg) and the western Sacramento Valley (median 14 mg/kg). The segregation of soil geochemistry into distinctive groupings across the Sacramento River arises from the former presence of a natural levee (now replaced by an artificial one) along the banks of the river. This levee has been a barrier to sediment transport. Sediment transport to the Valley by glacial outwash from higher elevations in the Sierra Nevada and, more recently, debris from placer Au mining has dominated sediment transport to the eastern Valley. High content of mafic elements (and low content of silicic elements) in surface soil in the west side of the valley is due to a combination of lack of silicic source rocks, transport of ultramafic rock material from the Coast Ranges, and input of sediment from the late Mesozoic Great Valley Group, which is itself enriched in mafic elements. A third group of elements (Zn, Cd, As and Cu) reflect the impact of mining activity. Soil with elevated content of these elements occurs along the Sacramento River in both levee and adjacent flood basin settings. It is interpreted that transport of sediment down the Sacramento River from massive sulfide mines in the Klamath Mountains to the north has caused this pattern. The Pb, and to some extent Zn, distribution patterns are strongly impacted by anthropogenic inputs. Elevated Pb content is localized in major cites and along major highways due to inputs from leaded gasoline. Zinc has a similar distribution pattern but the source is tire wear.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Applied Geochemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.apgeochem.2009.04.018","issn":"08832927","usgsCitation":"Goldhaber, M., Morrison, J., Holloway, J., Wanty, R., Helsel, D., and Smith, D.B., 2009, A regional soil and sediment geochemical study in northern California: Applied Geochemistry, v. 24, no. 8, p. 1482-1499, https://doi.org/10.1016/j.apgeochem.2009.04.018.","startPage":"1482","endPage":"1499","numberOfPages":"18","costCenters":[],"links":[{"id":217605,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.apgeochem.2009.04.018"},{"id":245561,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"24","issue":"8","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e543e4b0c8380cd46c47","contributors":{"authors":[{"text":"Goldhaber, M. B. 0000-0002-1785-4243","orcid":"https://orcid.org/0000-0002-1785-4243","contributorId":103280,"corporation":false,"usgs":true,"family":"Goldhaber","given":"M. B.","affiliations":[],"preferred":false,"id":458455,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morrison, J.M.","contributorId":9063,"corporation":false,"usgs":true,"family":"Morrison","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":458450,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Holloway, J.M. 0000-0003-3603-7668","orcid":"https://orcid.org/0000-0003-3603-7668","contributorId":103041,"corporation":false,"usgs":true,"family":"Holloway","given":"J.M.","affiliations":[],"preferred":false,"id":458454,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wanty, R. B. 0000-0002-2063-6423","orcid":"https://orcid.org/0000-0002-2063-6423","contributorId":66704,"corporation":false,"usgs":true,"family":"Wanty","given":"R. B.","affiliations":[],"preferred":false,"id":458453,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Helsel, D.R.","contributorId":57448,"corporation":false,"usgs":false,"family":"Helsel","given":"D.R.","email":"","affiliations":[{"id":7242,"text":"Wisconsin Department of Natural Resources, Madison, WI, USA","active":true,"usgs":false}],"preferred":false,"id":458452,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Smith, D. B. davidsmith@usgs.gov","contributorId":12840,"corporation":false,"usgs":true,"family":"Smith","given":"D.","email":"davidsmith@usgs.gov","middleInitial":"B.","affiliations":[],"preferred":false,"id":458451,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70036886,"text":"70036886 - 2009 - Louisiana wetland water level monitoring using retracked TOPEX/POSEIDON altimetry","interactions":[],"lastModifiedDate":"2017-04-03T16:10:39","indexId":"70036886","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2666,"text":"Marine Geodesy","active":true,"publicationSubtype":{"id":10}},"title":"Louisiana wetland water level monitoring using retracked TOPEX/POSEIDON altimetry","docAbstract":"

Previous studies using satellite radar altimetry to observe inland river and wetland water level changes usually spatially average high-rate (10-Hz for TOPEX, 18-Hz for Envisat) measurements. Here we develop a technique to apply retracking of TOPEX waveforms by optimizing the estimated retracked gate positions using the Offset Center of Gravity retracker. This study, for the first time, utilizes stacking of retracked TOPEX data over Louisiana wetland and concludes that the water level observed by each of 10-Hz data with along-track sampling of ∼660 m exhibit variations, indicating detection of wetland dynamics. After further validations using nearby river gauges, we conclude that TOPEX is capable of measuring accurate water level changes beneath heavy-vegetation canopy region (swamp forest), and that it revealed wetland dynamic flow characteristics along track with spatial scale of 660 m or longer.

","language":"English","publisher":"Taylor & Francis","doi":"10.1080/01490410903094767","issn":"01490419","usgsCitation":"Lee, H., Shum, C., Yi, Y., Ibaraki, M., Kim, J., Braun, A., Kuo, C., and Lu, Z., 2009, Louisiana wetland water level monitoring using retracked TOPEX/POSEIDON altimetry: Marine Geodesy, v. 32, no. 3, p. 284-302, https://doi.org/10.1080/01490410903094767.","productDescription":"19 p.","startPage":"284","endPage":"302","numberOfPages":"19","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":245591,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217634,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01490410903094767"}],"volume":"32","issue":"3","noUsgsAuthors":false,"publicationDate":"2009-08-11","publicationStatus":"PW","scienceBaseUri":"505a49fee4b0c8380cd68a36","contributors":{"authors":[{"text":"Lee, H.","contributorId":40739,"corporation":false,"usgs":true,"family":"Lee","given":"H.","affiliations":[],"preferred":false,"id":458306,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shum, C. K.","contributorId":85373,"corporation":false,"usgs":true,"family":"Shum","given":"C. K.","affiliations":[],"preferred":false,"id":458312,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Yi, Y.","contributorId":79274,"corporation":false,"usgs":true,"family":"Yi","given":"Y.","email":"","affiliations":[],"preferred":false,"id":458310,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Ibaraki, M.","contributorId":42813,"corporation":false,"usgs":true,"family":"Ibaraki","given":"M.","email":"","affiliations":[],"preferred":false,"id":458307,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kim, J.-W.","contributorId":75731,"corporation":false,"usgs":true,"family":"Kim","given":"J.-W.","email":"","affiliations":[],"preferred":false,"id":458309,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Braun, Andreas","contributorId":80877,"corporation":false,"usgs":true,"family":"Braun","given":"Andreas","email":"","affiliations":[],"preferred":false,"id":458311,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kuo, C.-Y.","contributorId":69822,"corporation":false,"usgs":true,"family":"Kuo","given":"C.-Y.","email":"","affiliations":[],"preferred":false,"id":458308,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Lu, Z.","contributorId":106241,"corporation":false,"usgs":true,"family":"Lu","given":"Z.","affiliations":[],"preferred":false,"id":458313,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70035033,"text":"70035033 - 2009 - Late Pleistocene eolian features in southeastern Maryland and Chesapeake Bay region indicate strong WNW-NW winds accompanied growth of the Laurentide Ice Sheet","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035033","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Late Pleistocene eolian features in southeastern Maryland and Chesapeake Bay region indicate strong WNW-NW winds accompanied growth of the Laurentide Ice Sheet","docAbstract":"Inactive parabolic dunes are present in southeastern Maryland, USA, along the east bank of the Potomac River. More elongate and finer-grained eolian deposits and paha-like ridges characterize the Potomac River-Patuxent River upland and the west side of Chesapeake Bay. These ridges are streamlined erosional features, veneered with eolian sediment and interspersed with dunes in the low-relief headwaters of Potomac- and Patuxent-river tributaries. Axis data for the dunes and ridges indicate formation by WNW-NW winds. Optically stimulated luminescence and radiocarbon age data suggest dune formation from ??? 33-15??ka, agreeing with the 30-13??ka ages Denny, C.S., Owens, J.P., Sirkin, L., Rubin, M., 1979. The Parsonburg Sand in the central Delmarva Peninsula, Maryland and Delaware. U.S. Geol. Surv. Prof. Pap. 1067-B, 16??pp. suggested for eolian deposits east of Chesapeake Bay. Age range and paleowind direction(s) for eolian features in the Bay region approximate those for late Wisconsin loess in the North American midcontinent. Formation of midcontinent loess and Bay-region eolian features was coeval with rapid growth of the Laurentide Ice Sheet and strong cooling episodes (??18O minima) evident in Greenland ice cores. Age and paleowind-direction coincidence, for eolian features in the midcontinent and Bay region, indicates strong mid-latitude WNW-NW winds for several hundred kilometers south of the Laurentide glacial terminus that were oblique to previously simulated anticyclonic winds for the last glacial maximum.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.yqres.2009.02.001","issn":"00335894","usgsCitation":"Markewich, H.W., Litwin, R.J., Pavich, M., and Brook, G., 2009, Late Pleistocene eolian features in southeastern Maryland and Chesapeake Bay region indicate strong WNW-NW winds accompanied growth of the Laurentide Ice Sheet: Quaternary Research, v. 71, no. 3, p. 409-425, https://doi.org/10.1016/j.yqres.2009.02.001.","startPage":"409","endPage":"425","numberOfPages":"17","costCenters":[],"links":[{"id":215173,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.yqres.2009.02.001"},{"id":242955,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"3","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"505a4511e4b0c8380cd66ff1","contributors":{"authors":[{"text":"Markewich, H. W.","contributorId":31426,"corporation":false,"usgs":true,"family":"Markewich","given":"H.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":448969,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Litwin, R. J.","contributorId":92284,"corporation":false,"usgs":true,"family":"Litwin","given":"R.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":448972,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pavich, M.J.","contributorId":70788,"corporation":false,"usgs":true,"family":"Pavich","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":448971,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brook, G.A.","contributorId":66503,"corporation":false,"usgs":true,"family":"Brook","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":448970,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035043,"text":"70035043 - 2009 - Regression models for explaining and predicting concentrations of organochlorine pesticides in fish from streams in the United States","interactions":[],"lastModifiedDate":"2016-06-01T15:53:47","indexId":"70035043","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1571,"text":"Environmental Toxicology and Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Regression models for explaining and predicting concentrations of organochlorine pesticides in fish from streams in the United States","docAbstract":"

Empirical regression models were developed for estimating concentrations of dieldrin, total chlordane, and total DDT in whole fish from U.S. streams. Models were based on pesticide concentrations measured in whole fish at 648 stream sites nationwide (1992-2001) as part of the U.S. Geological Survey's National Water Quality Assessment Program. Explanatory variables included fish lipid content, estimates (or surrogates) representing historical agricultural and urban sources, watershed characteristics, and geographic location. Models were developed using Tobit regression methods appropriate for data with censoring. Typically, the models explain approximately 50 to 70% of the variability in pesticide concentrations measured in whole fish. The models were used to predict pesticide concentrations in whole fish for streams nationwide using the U.S. Environmental Protection Agency's River Reach File 1 and to estimate the probability that whole-fish concentrations exceed benchmarks for protection of fish-eating wildlife. Predicted concentrations were highest for dieldrin in the Corn Belt, Texas, and scattered urban areas; for total chlordane in the Corn Belt, Texas, the Southeast, and urbanized Northeast; and for total DDT in the Southeast, Texas, California, and urban areas nationwide. The probability of exceeding wildlife benchmarks for dieldrin and chlordane was predicted to be low for most U.S. streams. The probability of exceeding wildlife benchmarks for total DDT is higher but varies depending on the fish taxon and on the benchmark used. Because the models in the present study are based on fish data collected during the 1990s and organochlorine pesticide residues in the environment continue to decline decades after their uses were discontinued, these models may overestimate present-day pesticide concentrations in fish. ?? 2009 SETAC.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Toxicology and Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1897/08-508.1","issn":"07307268","usgsCitation":"Nowell, L.H., Crawford, C.G., Gilliom, R.J., Nakagaki, N., Stone, W.W., Thelin, G., and Wolock, D.M., 2009, Regression models for explaining and predicting concentrations of organochlorine pesticides in fish from streams in the United States: Environmental Toxicology and Chemistry, v. 28, no. 6, p. 1346-1358, https://doi.org/10.1897/08-508.1.","startPage":"1346","endPage":"1358","numberOfPages":"13","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":243086,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215292,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1897/08-508.1"}],"volume":"28","issue":"6","noUsgsAuthors":false,"publicationDate":"2009-06-01","publicationStatus":"PW","scienceBaseUri":"50e4a5d1e4b0e8fec6cdc012","contributors":{"authors":[{"text":"Nowell, Lisa H. 0000-0001-5417-7264 lhnowell@usgs.gov","orcid":"https://orcid.org/0000-0001-5417-7264","contributorId":490,"corporation":false,"usgs":true,"family":"Nowell","given":"Lisa","email":"lhnowell@usgs.gov","middleInitial":"H.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true}],"preferred":true,"id":449011,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Crawford, Charles G. 0000-0003-1653-7841 cgcrawfo@usgs.gov","orcid":"https://orcid.org/0000-0003-1653-7841","contributorId":1064,"corporation":false,"usgs":true,"family":"Crawford","given":"Charles","email":"cgcrawfo@usgs.gov","middleInitial":"G.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true},{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"preferred":true,"id":449009,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gilliom, Robert J. rgilliom@usgs.gov","contributorId":488,"corporation":false,"usgs":true,"family":"Gilliom","given":"Robert","email":"rgilliom@usgs.gov","middleInitial":"J.","affiliations":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true}],"preferred":true,"id":449013,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nakagaki, Naomi 0000-0003-3653-0540 nakagaki@usgs.gov","orcid":"https://orcid.org/0000-0003-3653-0540","contributorId":1067,"corporation":false,"usgs":true,"family":"Nakagaki","given":"Naomi","email":"nakagaki@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":449012,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Stone, Wesley W. 0000-0003-0239-2063 wwstone@usgs.gov","orcid":"https://orcid.org/0000-0003-0239-2063","contributorId":1496,"corporation":false,"usgs":true,"family":"Stone","given":"Wesley","email":"wwstone@usgs.gov","middleInitial":"W.","affiliations":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true},{"id":27231,"text":"Indiana-Kentucky Water Science Center","active":true,"usgs":true},{"id":346,"text":"Indiana Water Science Center","active":true,"usgs":true}],"preferred":true,"id":449014,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Thelin, Gail gpthelin@usgs.gov","contributorId":1065,"corporation":false,"usgs":true,"family":"Thelin","given":"Gail","email":"gpthelin@usgs.gov","affiliations":[],"preferred":true,"id":449015,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wolock, David M. 0000-0002-6209-938X dwolock@usgs.gov","orcid":"https://orcid.org/0000-0002-6209-938X","contributorId":540,"corporation":false,"usgs":true,"family":"Wolock","given":"David","email":"dwolock@usgs.gov","middleInitial":"M.","affiliations":[{"id":451,"text":"National Water Quality Assessment Program","active":true,"usgs":true},{"id":503,"text":"Office of Water Quality","active":true,"usgs":true},{"id":27111,"text":"National Water Quality Program","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true},{"id":353,"text":"Kansas Water Science Center","active":false,"usgs":true}],"preferred":true,"id":449010,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70035048,"text":"70035048 - 2009 - Source analysis using regional empirical Green's functions: The 2008 Wells, Nevada, earthquake","interactions":[],"lastModifiedDate":"2016-01-27T15:13:57","indexId":"70035048","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1807,"text":"Geophysical Research Letters","active":true,"publicationSubtype":{"id":10}},"title":"Source analysis using regional empirical Green's functions: The 2008 Wells, Nevada, earthquake","docAbstract":"

We invert three-component, regional broadband waveforms recorded for the 21 February 2008 Wells, Nevada, earthquake using a finite-fault methodology that prescribes subfault responses using eight MW∼4 aftershocks as empirical Green's functions (EGFs) distributed within a 20-km by 21.6-km fault area. The inversion identifies a seismic moment of 6.2 x 1024 dyne-cm (5.8 MW) with slip concentrated in a compact 6.5-km by 4-km region updip from the hypocenter. The peak slip within this localized area is 88 cm and the stress drop is 72 bars, which is higher than expected for Basin and Range normal faults in the western United States. The EGF approach yields excellent fits to the complex regional waveforms, accounting for strong variations in wave propagation and site effects. This suggests that the procedure is useful for studying moderate-size earthquakes with limited teleseismic or strong-motion data and for examining uncertainties in slip models obtained using theoretical Green's functions.

","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Research Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"American Geophysical Union","publisherLocation":"Washington","doi":"10.1029/2009GL038073","issn":"00948276","usgsCitation":"Mendoza, C., and Hartzell, S., 2009, Source analysis using regional empirical Green's functions: The 2008 Wells, Nevada, earthquake: Geophysical Research Letters, v. 36, no. 11, 6 p., https://doi.org/10.1029/2009GL038073.","productDescription":"6 p.","numberOfPages":"6","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":243153,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215356,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2009GL038073"}],"country":"United States","state":"Nevada","city":"Wells","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -114.96574401855469,\n 41.138330326939034\n ],\n [\n -114.98016357421875,\n 41.11557271185201\n ],\n [\n -114.96917724609374,\n 41.0948771219984\n ],\n [\n -114.94102478027342,\n 41.09073722135943\n ],\n [\n -114.88746643066406,\n 41.1238491214713\n ],\n [\n -114.84695434570311,\n 41.14867208811923\n ],\n [\n -114.84901428222658,\n 41.185888923673645\n ],\n [\n -114.85382080078125,\n 41.20603921623881\n ],\n [\n -114.8902130126953,\n 41.211204958730455\n ],\n [\n -114.92591857910155,\n 41.193123075718695\n ],\n [\n -114.96025085449219,\n 41.16056309723075\n ],\n [\n -114.96574401855469,\n 41.138330326939034\n ]\n ]\n ]\n }\n }\n ]\n}","volume":"36","issue":"11","noUsgsAuthors":false,"publicationDate":"2009-06-03","publicationStatus":"PW","scienceBaseUri":"505b9317e4b08c986b31a2b5","contributors":{"authors":[{"text":"Mendoza, C.","contributorId":82059,"corporation":false,"usgs":true,"family":"Mendoza","given":"C.","email":"","affiliations":[],"preferred":false,"id":449040,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hartzell, S.","contributorId":12603,"corporation":false,"usgs":true,"family":"Hartzell","given":"S.","email":"","affiliations":[],"preferred":false,"id":449039,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036881,"text":"70036881 - 2009 - A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter","interactions":[],"lastModifiedDate":"2012-03-12T17:22:00","indexId":"70036881","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","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":"A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter","docAbstract":"Martian aqueous mineral deposits have been examined and characterized using data acquired during Mars Reconnaissance Orbiter's (MRO) primary science phase, including Compact Reconnaissance Imaging Spectrometer for Mars hyperspectral images covering the 0.4-3.9 ??m wavelength range, coordinated with higher-spatial resolution HiRISE and Context Imager images. MRO's new high-resolution measurements, combined with earlier data from Thermal Emission Spectrometer; Thermal Emission Imaging System; and Observatoire pour la Min??ralogie, L'Eau, les Glaces et l'Activiti?? on Mars Express, indicate that aqueous minerals are both diverse and widespread on the Martian surface. The aqueous minerals occur in 9-10 classes of deposits characterized by distinct mineral assemblages, morphologies, and geologic settings. Phyllosilicates occur in several settings: in compositionally layered blankets hundreds of meters thick, superposed on eroded Noachian terrains; in lower layers of intracrater depositional fans; in layers with potential chlorides in sediments on intercrater plains; and as thousands of deep exposures in craters and escarpments. Carbonate-bearing rocks form a thin unit surrounding the Isidis basin. Hydrated silica occurs with hydrated sulfates in thin stratified deposits surrounding Valles Marineris. Hydrated sulfates also occur together with crystalline ferric minerals in thick, layered deposits in Terra Meridiani and in Valles Marineris and together with kaolinite in deposits that partially infill some highland craters. In this paper we describe each of the classes of deposits, review hypotheses for their origins, identify new questions posed by existing measurements, and consider their implications for ancient habitable environments. On the basis of current data, two to five classes of Noachian-aged deposits containing phyllosilicates and carbonates may have formed in aqueous environments with pH and water activities suitable for life. Copyright 2009 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2009JE003342","issn":"01480227","usgsCitation":"Murchie, S., Mustard, J., Ehlmann, B., Milliken, R., Bishop, J., McKeown, N., Noe Dobrea, E., Seelos, F., Buczkowski, D., Wiseman, S., Arvidson, R., Wray, J., Swayze, G., Clark, R.N., Des Marais, D., McEwen, A.S., and Bibring, J., 2009, A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter: Journal of Geophysical Research E: Planets, v. 114, no. 9, https://doi.org/10.1029/2009JE003342.","costCenters":[],"links":[{"id":476321,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2009je003342","text":"Publisher Index Page"},{"id":245528,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217575,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2009JE003342"}],"volume":"114","issue":"9","noUsgsAuthors":false,"publicationDate":"2009-09-22","publicationStatus":"PW","scienceBaseUri":"5059e5e6e4b0c8380cd4700a","contributors":{"authors":[{"text":"Murchie, S.L.","contributorId":7369,"corporation":false,"usgs":true,"family":"Murchie","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":458275,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mustard, J.F.","contributorId":91605,"corporation":false,"usgs":true,"family":"Mustard","given":"J.F.","email":"","affiliations":[],"preferred":false,"id":458287,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ehlmann, B.L.","contributorId":107837,"corporation":false,"usgs":true,"family":"Ehlmann","given":"B.L.","email":"","affiliations":[],"preferred":false,"id":458290,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Milliken, R.E.","contributorId":98022,"corporation":false,"usgs":true,"family":"Milliken","given":"R.E.","email":"","affiliations":[],"preferred":false,"id":458289,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Bishop, J.L.","contributorId":83244,"corporation":false,"usgs":true,"family":"Bishop","given":"J.L.","affiliations":[],"preferred":false,"id":458284,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"McKeown, N.K.","contributorId":10529,"corporation":false,"usgs":true,"family":"McKeown","given":"N.K.","email":"","affiliations":[],"preferred":false,"id":458276,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Noe Dobrea, E.Z.","contributorId":97316,"corporation":false,"usgs":true,"family":"Noe Dobrea","given":"E.Z.","email":"","affiliations":[],"preferred":false,"id":458288,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Seelos, F.P.","contributorId":44350,"corporation":false,"usgs":true,"family":"Seelos","given":"F.P.","affiliations":[],"preferred":false,"id":458279,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Buczkowski, D.L.","contributorId":66512,"corporation":false,"usgs":true,"family":"Buczkowski","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":458283,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Wiseman, S.M.","contributorId":58097,"corporation":false,"usgs":true,"family":"Wiseman","given":"S.M.","email":"","affiliations":[],"preferred":false,"id":458282,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Arvidson, R. E.","contributorId":46666,"corporation":false,"usgs":true,"family":"Arvidson","given":"R. E.","affiliations":[],"preferred":false,"id":458280,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Wray, J.J.","contributorId":26049,"corporation":false,"usgs":true,"family":"Wray","given":"J.J.","email":"","affiliations":[],"preferred":false,"id":458278,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Swayze, G. 0000-0002-1814-7823","orcid":"https://orcid.org/0000-0002-1814-7823","contributorId":55131,"corporation":false,"usgs":true,"family":"Swayze","given":"G.","affiliations":[],"preferred":false,"id":458281,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Clark, R. N.","contributorId":6568,"corporation":false,"usgs":true,"family":"Clark","given":"R.","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":458274,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Des Marais, D.J.","contributorId":84075,"corporation":false,"usgs":true,"family":"Des Marais","given":"D.J.","affiliations":[],"preferred":false,"id":458285,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"McEwen, A. S.","contributorId":11317,"corporation":false,"usgs":true,"family":"McEwen","given":"A.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":458277,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Bibring, J.-P.","contributorId":86083,"corporation":false,"usgs":true,"family":"Bibring","given":"J.-P.","email":"","affiliations":[],"preferred":false,"id":458286,"contributorType":{"id":1,"text":"Authors"},"rank":17}]}} ,{"id":70036863,"text":"70036863 - 2009 - Dynamics of national forests assessed using the Landsat record: Case studies in eastern United States","interactions":[],"lastModifiedDate":"2017-04-03T16:04:15","indexId":"70036863","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3254,"text":"Remote Sensing of Environment","printIssn":"0034-4257","active":true,"publicationSubtype":{"id":10}},"title":"Dynamics of national forests assessed using the Landsat record: Case studies in eastern United States","docAbstract":"

The national forests (NFs) in the United States are protected areas managed for multiple purposes, and therefore are subject to both natural and anthropogenic disturbances. Monitoring forest changes arising from such disturbances and the post-disturbance recovery processes is essential for assessing the conditions of the NFs and the effectiveness of management approaches. In this study, we used time series stacks of Landsat images (LTSS) to evaluate the dynamics of seven NFs in eastern United States, including the De Soto NF, the Talladega NF, the Francis Marion NF, and the Uwharrie NF in southeastern U.S., and the Chequamegon NF, the Hiawatha NF, and the Superior NF in northern U.S. Each LTSS consisted of 12–14 Landsat images acquired for the same location, spanning from 1984 to 2006 with a nominal interval of one image every 2 years. Each LTSS was analyzed using a vegetation change tracker (VCT) algorithm to map forest disturbance. Accuracy assessments of the derived disturbance maps revealed that they had overall accuracy values of about 80%, with most of the disturbance classes having user's accuracies ranging from 70% to 95%. The producer's accuracies were generally lower, with the majority being in the range between 50% and 70%. While this may suggest that the disturbance maps could slightly underestimate disturbances, a more detailed assessment of the omission errors revealed that the majority of the disagreements were due to minor disturbances like thinning or storm damages that were identified by the image analysts but were not captured by the VCT algorithm.

The derived disturbance year maps revealed that while each of the seven NFs consisted of 90% or more forest land, significant portions of the forests were disturbed since 1984. Mapped disturbances accounted for about 30%–45% of total land area in the four NFs in southeastern U.S. and about 10%–20% in the three NFs in northern U.S. The disturbance rates were generally higher in the buffer zones surrounding each NF, and varied considerably over time. The time series approach employed in this study represents a new approach for monitoring forest resources using the Landsat or similar satellite data records. The disturbance products derived using this approach were spatially explicit and contained much more temporal details than conventional bi-temporal change products, and likely will be found more useful by many users including ecologists and resources managers. The high disturbance rates found in the southeastern U.S. suggest that this region may have a more significant role in modulating the atmospheric carbon budget than currently recognized.

","language":"English","publisher":"Elsevier","doi":"10.1016/j.rse.2008.06.016","issn":"00344257","usgsCitation":"Huang, C., Goward, S., Schleeweis, K., Thomas, N., Masek, J.G., and Zhu, Z., 2009, Dynamics of national forests assessed using the Landsat record: Case studies in eastern United States: Remote Sensing of Environment, v. 113, no. 7, p. 1430-1442, https://doi.org/10.1016/j.rse.2008.06.016.","productDescription":"13 p.","startPage":"1430","endPage":"1442","numberOfPages":"13","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":245679,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217718,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2008.06.016"}],"volume":"113","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0434e4b0c8380cd50855","contributors":{"authors":[{"text":"Huang, C.","contributorId":65255,"corporation":false,"usgs":true,"family":"Huang","given":"C.","email":"","affiliations":[],"preferred":false,"id":458182,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goward, S.N.","contributorId":94514,"corporation":false,"usgs":true,"family":"Goward","given":"S.N.","affiliations":[],"preferred":false,"id":458184,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schleeweis, K.","contributorId":10258,"corporation":false,"usgs":true,"family":"Schleeweis","given":"K.","affiliations":[],"preferred":false,"id":458180,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thomas, N.","contributorId":72490,"corporation":false,"usgs":true,"family":"Thomas","given":"N.","email":"","affiliations":[],"preferred":false,"id":458183,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Masek, J. G.","contributorId":105883,"corporation":false,"usgs":true,"family":"Masek","given":"J.","email":"","middleInitial":"G.","affiliations":[],"preferred":false,"id":458185,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zhu, Z.","contributorId":10898,"corporation":false,"usgs":true,"family":"Zhu","given":"Z.","email":"","affiliations":[],"preferred":false,"id":458181,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70035064,"text":"70035064 - 2009 - VP Structure of Mount St. Helens, Washington, USA, imaged with local earthquake tomography","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035064","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2499,"text":"Journal of Volcanology and Geothermal Research","active":true,"publicationSubtype":{"id":10}},"title":"VP Structure of Mount St. Helens, Washington, USA, imaged with local earthquake tomography","docAbstract":"We present a new P-wave velocity model for Mount St. Helens using local earthquake data recorded by the Pacific Northwest Seismograph Stations and Cascades Volcano Observatory since the 18 May 1980 eruption. These data were augmented with records from a dense array of 19 temporary stations deployed during the second half of 2005. Because the distribution of earthquakes in the study area is concentrated beneath the volcano and within two nearly linear trends, we used a graded inversion scheme to compute a coarse-grid model that focused on the regional structure, followed by a fine-grid inversion to improve spatial resolution directly beneath the volcanic edifice. The coarse-grid model results are largely consistent with earlier geophysical studies of the area; we find high-velocity anomalies NW and NE of the edifice that correspond with igneous intrusions and a prominent low-velocity zone NNW of the edifice that corresponds with the linear zone of high seismicity known as the St. Helens Seismic Zone. This low-velocity zone may continue past Mount St. Helens to the south at depths below 5??km. Directly beneath the edifice, the fine-grid model images a low-velocity zone between about 2 and 3.5??km below sea level that may correspond to a shallow magma storage zone. And although the model resolution is poor below about 6??km, we found low velocities that correspond with the aseismic zone between about 5.5 and 8??km that has previously been modeled as the location of a large magma storage volume. ?? 2009 Elsevier B.V.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Volcanology and Geothermal Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jvolgeores.2009.02.009","issn":"03770273","usgsCitation":"Waite, G., and Moran, S., 2009, VP Structure of Mount St. Helens, Washington, USA, imaged with local earthquake tomography: Journal of Volcanology and Geothermal Research, v. 182, no. 1-2, p. 113-122, https://doi.org/10.1016/j.jvolgeores.2009.02.009.","startPage":"113","endPage":"122","numberOfPages":"10","costCenters":[],"links":[{"id":215144,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jvolgeores.2009.02.009"},{"id":242922,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"182","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc0e3e4b08c986b32a394","contributors":{"authors":[{"text":"Waite, G.P.","contributorId":82121,"corporation":false,"usgs":true,"family":"Waite","given":"G.P.","email":"","affiliations":[],"preferred":false,"id":449116,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moran, S.C. 0000-0001-7308-9649","orcid":"https://orcid.org/0000-0001-7308-9649","contributorId":78896,"corporation":false,"usgs":true,"family":"Moran","given":"S.C.","affiliations":[],"preferred":false,"id":449115,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036862,"text":"70036862 - 2009 - THEMIS high-resolution digital terrain: Topographic and thermophysical mapping of Gusev Crater, Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:21:59","indexId":"70036862","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","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":"THEMIS high-resolution digital terrain: Topographic and thermophysical mapping of Gusev Crater, Mars","docAbstract":"We discuss a new technique to generate high-resolution digital terrain models (DTMs) and to quantitatively derive and map slope-corrected thermophysical properties such as albedo, thermal inertia, and surface temperatures. This investigation is a continuation of work started by Kirk et al. (2005), who empirically deconvolved Thermal Emission Imaging System (THEMIS) visible and thermal infrared data of this area, isolating topographic information that produced an accurate DTM. Surface temperatures change as a function of many variables such as slope, albedo, thermal inertia, time, season, and atmospheric opacity. We constrain each of these variables to construct a DTM and maps of slope-corrected albedo, slope- and albedo-corrected thermal inertia, and surface temperatures across the scene for any time of day or year and at any atmospheric opacity. DTMs greatly facilitate analyses of the Martian surface, and the MOLA global data set is not finely scaled enough (128 pixels per degree, ???0.5 km per pixel near the equator) to be combined with newer data sets (e.g., High Resolution Imaging Science Experiment, Context Camera, and Compact Reconnaissance Imaging Spectrometer for Mars at ???0.25, ???6, and ???20 m per pixel, respectively), so new techniques to derive high-resolution DTMs are always being explored. This paper discusses our technique of combining a set of THEMIS visible and thermal infrared observations such that albedo and thermal inertia variations within the scene are eliminated and only topographic variations remain. This enables us to produce a high-resolution DTM via photoclinometry techniques that are largely free of albedo-induced errors. With this DTM, THEMIS observations, and a subsurface thermal diffusion model, we generate slope-corrected maps of albedo, thermal inertia, and surface temperatures. In addition to greater accuracy, these products allow thermophysical properties to be directly compared with topography.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2008JE003292","issn":"01480227","usgsCitation":"Cushing, G., Titus, T., Soderblom, L., and Kirk, R.L., 2009, THEMIS high-resolution digital terrain: Topographic and thermophysical mapping of Gusev Crater, Mars: Journal of Geophysical Research E: Planets, v. 114, no. 7, https://doi.org/10.1029/2008JE003292.","costCenters":[],"links":[{"id":217687,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2008JE003292"},{"id":245647,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"114","issue":"7","noUsgsAuthors":false,"publicationDate":"2009-07-15","publicationStatus":"PW","scienceBaseUri":"505ba383e4b08c986b31fd2c","contributors":{"authors":[{"text":"Cushing, G.E.","contributorId":56778,"corporation":false,"usgs":true,"family":"Cushing","given":"G.E.","email":"","affiliations":[],"preferred":false,"id":458177,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Titus, T.N.","contributorId":102615,"corporation":false,"usgs":true,"family":"Titus","given":"T.N.","email":"","affiliations":[],"preferred":false,"id":458179,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Soderblom, L.A. 0000-0002-0917-853X","orcid":"https://orcid.org/0000-0002-0917-853X","contributorId":6139,"corporation":false,"usgs":true,"family":"Soderblom","given":"L.A.","affiliations":[],"preferred":false,"id":458176,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kirk, R. L.","contributorId":94698,"corporation":false,"usgs":true,"family":"Kirk","given":"R.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":458178,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70032784,"text":"70032784 - 2009 - A mass balance mercury budget for a mine-dominated lake: Clear Lake, California","interactions":[],"lastModifiedDate":"2017-07-20T11:08:34","indexId":"70032784","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3728,"text":"Water, Air, & Soil Pollution","onlineIssn":"1573-2932","printIssn":"0049-6979","active":true,"publicationSubtype":{"id":10}},"title":"A mass balance mercury budget for a mine-dominated lake: Clear Lake, California","docAbstract":"

The Sulphur Bank Mercury Mine (SBMM), active intermittently from 1873–1957 and now a USEPA Superfund site, was previously estimated to have contributed at least 100 metric tons (105 kg) of mercury (Hg) into the Clear Lake aquatic ecosystem. We have confirmed this minimum estimate. To better quantify the contribution of the mine in relation to other sources of Hg loading into Clear Lake and provide data that might help reduce that loading, we analyzed Inputs and Outputs of Hg to Clear Lake and Storage of Hg in lakebed sediments using a mass balance approach. We evaluated Inputs from (1) wet and dry atmospheric deposition from both global/regional and local sources, (2) watershed tributaries, (3) groundwater inflows, (4) lakebed springs and (5) the mine. Outputs were quantified from (1) efflux (volatilization) of Hg from the lake surface to the atmosphere, (2) municipal and agricultural water diversions, (3) losses from out-flowing drainage of Cache Creek that feeds into the California Central Valley and (4) biotic Hg removal by humans and wildlife. Storage estimates include (1) sediment burial from historic and prehistoric periods (over the past 150–3,000 years) from sediment cores to ca. 2.5m depth dated using dichloro diphenyl dichloroethane (DDD), 210Pb and 14C and (2) recent Hg deposition in surficial sediments. Surficial sediments collected in October 2003 (11 years after mine site remediation) indicate no reduction (but a possible increase) in sediment Hg concentrations over that time and suggest that remediation has not significantly reduced overall Hg loading to the lake. Currently, the mine is believed to contribute ca. 322–331 kg of Hg annually to Clear Lake, which represents ca. 86–99% of the total Hg loading to the lake. We estimate that natural sedimentation would cover the existing contaminated sediments within ca. 150–300 years.

","language":"English","publisher":"Springer","doi":"10.1007/s11270-008-9757-1","issn":"00496","usgsCitation":"Suchanek, T., Cooke, J., Keller, K., Jorgensen, S., Richerson, P., Eagles-Smith, C.A., Harner, E., and Adam, D., 2009, A mass balance mercury budget for a mine-dominated lake: Clear Lake, California: Water, Air, & Soil Pollution, v. 196, no. 1-4, p. 51-73, https://doi.org/10.1007/s11270-008-9757-1.","productDescription":"23 p.","startPage":"51","endPage":"73","numberOfPages":"23","costCenters":[],"links":[{"id":241266,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213620,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11270-008-9757-1"}],"volume":"196","issue":"1-4","noUsgsAuthors":false,"publicationDate":"2008-08-03","publicationStatus":"PW","scienceBaseUri":"5059e2e9e4b0c8380cd45d18","contributors":{"authors":[{"text":"Suchanek, T.H.","contributorId":20682,"corporation":false,"usgs":true,"family":"Suchanek","given":"T.H.","email":"","affiliations":[],"preferred":false,"id":437891,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cooke, J.","contributorId":6447,"corporation":false,"usgs":true,"family":"Cooke","given":"J.","email":"","affiliations":[],"preferred":false,"id":437888,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Keller, K.","contributorId":25322,"corporation":false,"usgs":true,"family":"Keller","given":"K.","email":"","affiliations":[],"preferred":false,"id":437892,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jorgensen, S.","contributorId":67301,"corporation":false,"usgs":true,"family":"Jorgensen","given":"S.","affiliations":[],"preferred":false,"id":437893,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Richerson, P.J.","contributorId":100619,"corporation":false,"usgs":true,"family":"Richerson","given":"P.J.","affiliations":[],"preferred":false,"id":437895,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Eagles-Smith, Collin A. 0000-0003-1329-5285 ceagles-smith@usgs.gov","orcid":"https://orcid.org/0000-0003-1329-5285","contributorId":505,"corporation":false,"usgs":true,"family":"Eagles-Smith","given":"Collin","email":"ceagles-smith@usgs.gov","middleInitial":"A.","affiliations":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true},{"id":289,"text":"Forest and Rangeland Ecosys Science Center","active":true,"usgs":true}],"preferred":true,"id":437894,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Harner, E.J.","contributorId":16230,"corporation":false,"usgs":true,"family":"Harner","given":"E.J.","email":"","affiliations":[],"preferred":false,"id":437890,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Adam, D.P.","contributorId":14815,"corporation":false,"usgs":true,"family":"Adam","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":437889,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":70035065,"text":"70035065 - 2009 - CHRONOS architecture: Experiences with an open-source services-oriented architecture for geoinformatics","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035065","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1315,"text":"Computers & Geosciences","printIssn":"0098-3004","active":true,"publicationSubtype":{"id":10}},"title":"CHRONOS architecture: Experiences with an open-source services-oriented architecture for geoinformatics","docAbstract":"CHRONOS's purpose is to transform Earth history research by seamlessly integrating stratigraphic databases and tools into a virtual on-line stratigraphic record. In this paper, we describe the various components of CHRONOS's distributed data system, including the encoding of semantic and descriptive data into a service-based architecture. We give examples of how we have integrated well-tested resources available from the open-source and geoinformatic communities, like the GeoSciML schema and the simple knowledge organization system (SKOS), into the services-oriented architecture to encode timescale and phylogenetic synonymy data. We also describe on-going efforts to use geospatially enhanced data syndication and informally including semantic information by embedding it directly into the XHTML Document Object Model (DOM). XHTML DOM allows machine-discoverable descriptive data such as licensing and citation information to be incorporated directly into data sets retrieved by users. ?? 2008 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Computers and Geosciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.cageo.2008.02.035","issn":"00983004","usgsCitation":"Fils, D., Cervato, C., Reed, J., Diver, P., Tang, X., Bohling, G., and Greer, D., 2009, CHRONOS architecture: Experiences with an open-source services-oriented architecture for geoinformatics: Computers & Geosciences, v. 35, no. 4, p. 774-782, https://doi.org/10.1016/j.cageo.2008.02.035.","startPage":"774","endPage":"782","numberOfPages":"9","costCenters":[],"links":[{"id":215145,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.cageo.2008.02.035"},{"id":242923,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f2cfe4b0c8380cd4b3b9","contributors":{"authors":[{"text":"Fils, D.","contributorId":91318,"corporation":false,"usgs":true,"family":"Fils","given":"D.","email":"","affiliations":[],"preferred":false,"id":449122,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Cervato, C.","contributorId":70201,"corporation":false,"usgs":true,"family":"Cervato","given":"C.","email":"","affiliations":[],"preferred":false,"id":449120,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Reed, J.","contributorId":98966,"corporation":false,"usgs":false,"family":"Reed","given":"J.","affiliations":[],"preferred":false,"id":449123,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Diver, P.","contributorId":23779,"corporation":false,"usgs":true,"family":"Diver","given":"P.","affiliations":[],"preferred":false,"id":449117,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tang, X.","contributorId":43082,"corporation":false,"usgs":true,"family":"Tang","given":"X.","email":"","affiliations":[],"preferred":false,"id":449118,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bohling, G.","contributorId":60789,"corporation":false,"usgs":true,"family":"Bohling","given":"G.","email":"","affiliations":[],"preferred":false,"id":449119,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Greer, D.","contributorId":84997,"corporation":false,"usgs":true,"family":"Greer","given":"D.","email":"","affiliations":[],"preferred":false,"id":449121,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70035066,"text":"70035066 - 2009 - Evaluation of a moderate resolution, satellite-based impervious surface map using an independent, high-resolution validation data set","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035066","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2341,"text":"Journal of Hydrologic Engineering","active":true,"publicationSubtype":{"id":10}},"title":"Evaluation of a moderate resolution, satellite-based impervious surface map using an independent, high-resolution validation data set","docAbstract":"Given the relatively high cost of mapping impervious surfaces at regional scales, substantial effort is being expended in the development of moderate-resolution, satellite-based methods for estimating impervious surface area (ISA). To rigorously assess the accuracy of these data products high quality, independently derived validation data are needed. High-resolution data were collected across a gradient of development within the Mid-Atlantic region to assess the accuracy of National Land Cover Data (NLCD) Landsat-based ISA estimates. Absolute error (satellite predicted area - \"reference area\") and relative error [satellite (predicted area - \"reference area\")/ \"reference area\"] were calculated for each of 240 sample regions that are each more than 15 Landsat pixels on a side. The ability to compile and examine ancillary data in a geographic information system environment provided for evaluation of both validation and NLCD data and afforded efficient exploration of observed errors. In a minority of cases, errors could be explained by temporal discontinuities between the date of satellite image capture and validation source data in rapidly changing places. In others, errors were created by vegetation cover over impervious surfaces and by other factors that bias the satellite processing algorithms. On average in the Mid-Atlantic region, the NLCD product underestimates ISA by approximately 5%. While the error range varies between 2 and 8%, this underestimation occurs regardless of development intensity. Through such analyses the errors, strengths, and weaknesses of particular satellite products can be explored to suggest appropriate uses for regional, satellite-based data in rapidly developing areas of environmental significance. ?? 2009 ASCE.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrologic Engineering","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1061/(ASCE)1084-0699(2009)14:4(369)","issn":"10840699","usgsCitation":"Jones, J.W., and Jarnagin, T., 2009, Evaluation of a moderate resolution, satellite-based impervious surface map using an independent, high-resolution validation data set: Journal of Hydrologic Engineering, v. 14, no. 4, p. 369-376, https://doi.org/10.1061/(ASCE)1084-0699(2009)14:4(369).","startPage":"369","endPage":"376","numberOfPages":"8","costCenters":[],"links":[{"id":215176,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1061/(ASCE)1084-0699(2009)14:4(369)"},{"id":242958,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"14","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0c32e4b0c8380cd52a8a","contributors":{"authors":[{"text":"Jones, J. W.","contributorId":89233,"corporation":false,"usgs":true,"family":"Jones","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":449125,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jarnagin, T.","contributorId":15422,"corporation":false,"usgs":true,"family":"Jarnagin","given":"T.","email":"","affiliations":[],"preferred":false,"id":449124,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035067,"text":"70035067 - 2009 - Seasonal source-sink dynamics at the edge of a species' range","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035067","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal source-sink dynamics at the edge of a species' range","docAbstract":"The roles of dispersal and population dynamics in determining species' range boundaries recently have received theoretical attention but little empirical work. Here we provide data on survival, reproduction, and movement for a Virginia opossum (Didelphis virginiana) population at a local distributional edge in central Massachusetts (USA). Most juvenile females that apparently exploited anthropogenic resources survived their first winter, whereas those using adjacent natural resources died of starvation. In spring, adult females recolonized natural areas. A life-table model suggests that a population exploiting anthropogenic resources may grow, acting as source to a geographically interlaced sink of opossums using only natural resources, and also providing emigrants for further range expansion to new human-dominated landscapes. In a geographical model, this source-sink dynamic is consistent with the local distribution identified through road-kill surveys. The Virginia opossum's exploitation of human resources likely ameliorates energetically restrictive winters and may explain both their local distribution and their northward expansion in unsuitable natural climatic regimes. Landscape heterogeneity, such as created by urbanization, may result in source-sink dynamics at highly localized scales. Differential fitness and individual dispersal movements within local populations are key to generating regional distributions, and thus species ranges, that exceed expectations. ?? 2009 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/08-1263.1","issn":"00129658","usgsCitation":"Kanda, L., Fuller, T., Sievert, P., and Kellogg, R., 2009, Seasonal source-sink dynamics at the edge of a species' range: Ecology, v. 90, no. 6, p. 1574-1585, https://doi.org/10.1890/08-1263.1.","startPage":"1574","endPage":"1585","numberOfPages":"12","costCenters":[],"links":[{"id":242959,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215177,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/08-1263.1"}],"volume":"90","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b88d8e4b08c986b316bd0","contributors":{"authors":[{"text":"Kanda, L.L.","contributorId":74978,"corporation":false,"usgs":true,"family":"Kanda","given":"L.L.","email":"","affiliations":[],"preferred":false,"id":449127,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fuller, T.K.","contributorId":98252,"corporation":false,"usgs":true,"family":"Fuller","given":"T.K.","email":"","affiliations":[],"preferred":false,"id":449128,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sievert, P.R.","contributorId":104858,"corporation":false,"usgs":true,"family":"Sievert","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":449129,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kellogg, R.L.","contributorId":74080,"corporation":false,"usgs":true,"family":"Kellogg","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":449126,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70035071,"text":"70035071 - 2009 - Hybridization rapidly reduces fitness of a native trout in the wild","interactions":[],"lastModifiedDate":"2012-03-12T17:21:53","indexId":"70035071","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1028,"text":"Biology Letters","active":true,"publicationSubtype":{"id":10}},"title":"Hybridization rapidly reduces fitness of a native trout in the wild","docAbstract":"Human-mediated hybridization is a leading cause of biodiversity loss worldwide. How hybridization affects fitness and what level of hybridization is permissible pose difficult conservation questions with little empirical information to guide policy and management decisions. This is particularly true for salmonids, where widespread introgression among non-native and native taxa has often created hybrid swarms over extensive geographical areas resulting in genomic extinction. Here, we used parentage analysis with multilocus microsatellite markers to measure how varying levels of genetic introgression with non-native rainbow trout (Oncorhynchus mykiss) affect reproductive success (number of offspring per adult) of native westslope cutthroat trout (Oncorhynchus clarkii lewisi) in the wild. Small amounts of hybridization markedly reduced fitness of male and female trout, with reproductive success sharply declining by approximately 50 per cent, with only 20 per cent admixture. Despite apparent fitness costs, our data suggest that hybridization may spread due to relatively high reproductive success of first-generation hybrids and high reproductive success of a few males with high levels of admixture. This outbreeding depression suggests that even low levels of admixture may have negative effects on fitness in the wild and that policies protecting hybridized populations may need reconsideration. ?? 2009 The Royal Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biology Letters","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1098/rsbl.2009.0033","issn":"17449561","usgsCitation":"Muhlfeld, C., Kalinowski, S., McMahon, T., Taper, M., Painter, S., Leary, R., and Allendorf, F., 2009, Hybridization rapidly reduces fitness of a native trout in the wild: Biology Letters, v. 5, no. 3, p. 328-331, https://doi.org/10.1098/rsbl.2009.0033.","startPage":"328","endPage":"331","numberOfPages":"4","costCenters":[],"links":[{"id":476388,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/2679930","text":"External Repository"},{"id":215268,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1098/rsbl.2009.0033"},{"id":243058,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"5","issue":"3","noUsgsAuthors":false,"publicationDate":"2009-03-18","publicationStatus":"PW","scienceBaseUri":"505a32c3e4b0c8380cd5ea66","contributors":{"authors":[{"text":"Muhlfeld, C.C.","contributorId":97850,"corporation":false,"usgs":true,"family":"Muhlfeld","given":"C.C.","affiliations":[],"preferred":false,"id":449170,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kalinowski, S.T.","contributorId":26899,"corporation":false,"usgs":true,"family":"Kalinowski","given":"S.T.","affiliations":[],"preferred":false,"id":449165,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"McMahon, T.E.","contributorId":56463,"corporation":false,"usgs":true,"family":"McMahon","given":"T.E.","affiliations":[],"preferred":false,"id":449169,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Taper, M.L.","contributorId":36514,"corporation":false,"usgs":true,"family":"Taper","given":"M.L.","email":"","affiliations":[],"preferred":false,"id":449168,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Painter, S.","contributorId":28799,"corporation":false,"usgs":true,"family":"Painter","given":"S.","affiliations":[],"preferred":false,"id":449166,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Leary, R.F.","contributorId":31221,"corporation":false,"usgs":true,"family":"Leary","given":"R.F.","email":"","affiliations":[],"preferred":false,"id":449167,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Allendorf, F.W.","contributorId":99937,"corporation":false,"usgs":true,"family":"Allendorf","given":"F.W.","affiliations":[],"preferred":false,"id":449171,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70035072,"text":"70035072 - 2009 - Potential environmental issues of CO2 storage in deep saline aquifers: Geochemical results from the Frio-I Brine Pilot test, Texas, USA","interactions":[],"lastModifiedDate":"2018-10-15T07:54:00","indexId":"70035072","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":835,"text":"Applied Geochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Potential environmental issues of CO2 storage in deep saline aquifers: Geochemical results from the Frio-I Brine Pilot test, Texas, USA","docAbstract":"

Sedimentary basins in general, and deep saline aquifers in particular, are being investigated as possible repositories for large volumes of anthropogenic CO2 that must be sequestered to mitigate global warming and related climate changes. To investigate the potential for the long-term storage of CO2 in such aquifers, 1600 t of CO2 were injected at 1500 m depth into a 24-m-thick \"C\" sandstone unit of the Frio Formation, a regional aquifer in the US Gulf Coast. Fluid samples obtained before CO2 injection from the injection well and an observation well 30 m updip showed a Na–Ca–Cl type brine with ∼93,000 mg/L TDS at saturation with CH4 at reservoir conditions; gas analyses showed that CH4 comprised ∼95% of dissolved gas, but CO2 was low at 0.3%. Following CO2 breakthrough, 51 h after injection, samples showed sharp drops in pH (6.5–5.7), pronounced increases in alkalinity (100–3000 mg/L as HCO3) and in Fe (30–1100 mg/L), a slug of very high DOC values, and significant shifts in the isotopic compositions of H2O, DIC, and CH4. These data, coupled with geochemical modeling, indicate corrosion of pipe and well casing as well as rapid dissolution of minerals, especially calcite and iron oxyhydroxides, both caused by lowered pH (initially ∼3.0 at subsurface conditions) of the brine in contact with supercritical CO2.

These geochemical parameters, together with perfluorocarbon tracer gases (PFTs), were used to monitor migration of the injected CO2 into the overlying Frio “B”, composed of a 4-m-thick sandstone and separated from the “C” by ∼15 m of shale and siltstone beds. Results obtained from the Frio “B” 6 months after injection gave chemical and isotopic markers that show significant CO2 (2.9% compared with 0.3% CO2 in dissolved gas) migration into the “B” sandstone. Results of samples collected 15 months after injection, however, are ambiguous, and can be interpreted to show no additional injected CO2 in the “B” sandstone. The presence of injected CO2 may indicate migration from “C” to “B” through the intervening beds or, more likely, a short-term leakage through the remedial cement around the casing of a 50-year old well. Results obtained to date from four shallow monitoring groundwater wells show no brine or CO2 leakage through the Anahuac Formation, the regional cap rock.

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\"}}]}","volume":"24","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7ef8e4b0c8380cd7a84b","contributors":{"authors":[{"text":"Kharaka, Yousif K. 0000-0001-9861-8260 ykharaka@usgs.gov","orcid":"https://orcid.org/0000-0001-9861-8260","contributorId":1928,"corporation":false,"usgs":true,"family":"Kharaka","given":"Yousif","email":"ykharaka@usgs.gov","middleInitial":"K.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":449173,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thordsen, James J. jthordsn@usgs.gov","contributorId":3329,"corporation":false,"usgs":true,"family":"Thordsen","given":"James J.","email":"jthordsn@usgs.gov","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":449174,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hovorka, Susan D.","contributorId":175572,"corporation":false,"usgs":false,"family":"Hovorka","given":"Susan","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":449178,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nance, H. Seay","contributorId":59310,"corporation":false,"usgs":false,"family":"Nance","given":"H.","email":"","middleInitial":"Seay","affiliations":[{"id":12933,"text":"Bureau of Economic Geology, The University of Texas at Austin","active":true,"usgs":false}],"preferred":false,"id":449177,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Cole, David R.","contributorId":79044,"corporation":false,"usgs":true,"family":"Cole","given":"David","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":449175,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Phelps, Tommy J.","contributorId":175588,"corporation":false,"usgs":false,"family":"Phelps","given":"Tommy","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":449172,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Knauss, Kevin G.","contributorId":177240,"corporation":false,"usgs":false,"family":"Knauss","given":"Kevin","email":"","middleInitial":"G.","affiliations":[{"id":13621,"text":"Lawrence Livermore National Laboratory","active":true,"usgs":false}],"preferred":false,"id":449176,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70035077,"text":"70035077 - 2009 - Intra-annual NDVI validation of the Landsat 5 TM radiometric calibration","interactions":[],"lastModifiedDate":"2017-04-03T14:59:21","indexId":"70035077","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2068,"text":"International Journal of Remote Sensing","active":true,"publicationSubtype":{"id":10}},"title":"Intra-annual NDVI validation of the Landsat 5 TM radiometric calibration","docAbstract":"

Multispectral data from the Landsat 5 (L5) Thematic Mapper (TM) sensor provide the backbone of the extensive archive of moderate‐resolution Earth imagery. Even after more than 24 years of service, the L5 TM is still operational. Given the longevity of the satellite, the detectors have aged and the sensor's radiometric characteristics have changed since launch. The calibration procedures and parameters in the National Land Archive Production System (NLAPS) have also changed with time. Revised radiometric calibrations in 2003 and 2007 have improved the radiometric accuracy of recently processed data. This letter uses the Normalized Difference Vegetation Index (NDVI) as a metric to evaluate the radiometric calibration. The calibration change has improved absolute calibration accuracy, consistency over time, and consistency with Landsat 7 (L7) Enhanced Thematic radiometry and will provide the basis for continued long‐term studies of the Earth's land surfaces.

","language":"English","publisher":"Taylor & Francis","doi":"10.1080/01431160802524545","issn":"01431161","usgsCitation":"Chander, G., and Groeneveld, D., 2009, Intra-annual NDVI validation of the Landsat 5 TM radiometric calibration: International Journal of Remote Sensing, v. 30, no. 6, p. 1621-1628, https://doi.org/10.1080/01431160802524545.","productDescription":"8 p.","startPage":"1621","endPage":"1628","numberOfPages":"8","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":243155,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":215358,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1080/01431160802524545"}],"volume":"30","issue":"6","noUsgsAuthors":false,"publicationDate":"2009-04-22","publicationStatus":"PW","scienceBaseUri":"505a3dbae4b0c8380cd637c0","contributors":{"authors":[{"text":"Chander, G.","contributorId":51449,"corporation":false,"usgs":true,"family":"Chander","given":"G.","affiliations":[],"preferred":false,"id":449193,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Groeneveld, D.P.","contributorId":77161,"corporation":false,"usgs":true,"family":"Groeneveld","given":"D.P.","email":"","affiliations":[],"preferred":false,"id":449194,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70035081,"text":"70035081 - 2009 - Survival of radio-implanted drymarchon couperi (Eastern Indigo Snake) in relation to body size and sex","interactions":[],"lastModifiedDate":"2012-03-12T17:21:57","indexId":"70035081","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1892,"text":"Herpetologica","active":true,"publicationSubtype":{"id":10}},"title":"Survival of radio-implanted drymarchon couperi (Eastern Indigo Snake) in relation to body size and sex","docAbstract":"Drymarchon couperi (eastern indigo snake) has experienced population declines across its range primarily as a result of extensive habitat loss, fragmentation, and degradation. Conservation efforts for D. couperi have been hindered, in part, because of informational gaps regarding the species, including a lack of data on population ecology and estimates of demographic parameters such as survival. We conducted a 2- year radiotelemetry study of D. couperi on Fort Stewart Military Reservation and adjacent private lands located in southeastern Georgia to assess individual characteristics associated with probability of survival. We used known-fate modeling to estimate survival, and an information-theoretic approach, based on a priori hypotheses, to examine intraspecific differences in survival probabilities relative to individual covariates (sex, size, size standardized by sex, and overwintering location). Annual survival in 2003 and 2004 was 0.89 (95% CI = 0.73-0.97, n = 25) and 0.72 (95% CI = 0.52-0.86; n = 27), respectively. Results indicated that body size, standardized by sex, was the most important covariate determining survival of adult D. couperi, suggesting lower survival for larger individuals within each sex. We are uncertain of the mechanisms underlying this result, but possibilities may include greater resource needs for larger individuals within each sex, necessitating larger or more frequent movements, or a population with older individuals. Our results may also have been influenced by analysis limitations because of sample size, other sources of individual variation, or environmental conditions. ?? 2009 by The Herpetologists' League, Inc.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Herpetologica","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1655/08-004R1.1","issn":"00180831","usgsCitation":"Hyslop, N., Meyers, J., Cooper, R., and Norton, T., 2009, Survival of radio-implanted drymarchon couperi (Eastern Indigo Snake) in relation to body size and sex: Herpetologica, v. 65, no. 2, p. 199-206, https://doi.org/10.1655/08-004R1.1.","startPage":"199","endPage":"206","numberOfPages":"8","costCenters":[],"links":[{"id":215389,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1655/08-004R1.1"},{"id":243188,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"65","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba2dae4b08c986b31f9f0","contributors":{"authors":[{"text":"Hyslop, N.L.","contributorId":22066,"corporation":false,"usgs":true,"family":"Hyslop","given":"N.L.","email":"","affiliations":[],"preferred":false,"id":449201,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Meyers, J.M.","contributorId":54307,"corporation":false,"usgs":true,"family":"Meyers","given":"J.M.","email":"","affiliations":[],"preferred":false,"id":449202,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cooper, R.J.","contributorId":89077,"corporation":false,"usgs":true,"family":"Cooper","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":449204,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Norton, Terry M.","contributorId":71020,"corporation":false,"usgs":true,"family":"Norton","given":"Terry M.","affiliations":[],"preferred":false,"id":449203,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70036684,"text":"70036684 - 2009 - Spatial fuel data products of the LANDFIRE Project","interactions":[],"lastModifiedDate":"2017-04-05T11:07:27","indexId":"70036684","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2083,"text":"International Journal of Wildland Fire","active":true,"publicationSubtype":{"id":10}},"title":"Spatial fuel data products of the LANDFIRE Project","docAbstract":"

The Landscape Fire and Resource Management Planning Tools (LANDFIRE) Project is mapping wildland fuels, vegetation, and fire regime characteristics across the United States. The LANDFIRE project is unique because of its national scope, creating an integrated product suite at 30-m spatial resolution and complete spatial coverage of all lands within the 50 states. Here we describe development of the LANDFIRE wildland fuels data layers for the conterminous 48 states: surface fire behavior fuel models, canopy bulk density, canopy base height, canopy cover, and canopy height. Surface fire behavior fuel models are mapped by developing crosswalks to vegetation structure and composition created by LANDFIRE. Canopy fuels are mapped using regression trees relating field-referenced estimates of canopy base height and canopy bulk density to satellite imagery, biophysical gradients and vegetation structure and composition data. Here we focus on the methods and data used to create the fuel data products, discuss problems encountered with the data, provide an accuracy assessment, demonstrate recent use of the data during the 2007 fire season, and discuss ideas for updating, maintaining and improving LANDFIRE fuel data products.

","language":"English","publisher":"CSIRO","doi":"10.1071/WF08086","issn":"10498001","usgsCitation":"Reeves, M., Ryan, K., Rollins, M., and Thompson, T., 2009, Spatial fuel data products of the LANDFIRE Project: International Journal of Wildland Fire, v. 18, no. 3, p. 250-267, https://doi.org/10.1071/WF08086.","productDescription":"18 p.","startPage":"250","endPage":"267","numberOfPages":"18","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":245728,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217764,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1071/WF08086"}],"volume":"18","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b947ce4b08c986b31ab07","contributors":{"authors":[{"text":"Reeves, M.C.","contributorId":15047,"corporation":false,"usgs":true,"family":"Reeves","given":"M.C.","email":"","affiliations":[],"preferred":false,"id":457358,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ryan, K.C.","contributorId":34455,"corporation":false,"usgs":true,"family":"Ryan","given":"K.C.","email":"","affiliations":[],"preferred":false,"id":457361,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rollins, M.G.","contributorId":30434,"corporation":false,"usgs":true,"family":"Rollins","given":"M.G.","email":"","affiliations":[],"preferred":false,"id":457360,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Thompson, T.G.","contributorId":26911,"corporation":false,"usgs":true,"family":"Thompson","given":"T.G.","email":"","affiliations":[],"preferred":false,"id":457359,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70036858,"text":"70036858 - 2009 - Geomorphic applications of stream-gage information","interactions":[],"lastModifiedDate":"2012-03-12T17:21:59","indexId":"70036858","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3301,"text":"River Research and Applications","active":true,"publicationSubtype":{"id":10}},"title":"Geomorphic applications of stream-gage information","docAbstract":"In the United States, several thousand stream gages provide what typically is the only source of continuous, long-term streamflow and channel-geometry information for the locations being monitored. In this paper, the geomorphic content of stream-gage information, previous and potential applications of stream-gage information in fluvial geomorphic research and various possible limitations are described. Documented applications include studies of hydraulic geometry, channel bankfull characteristics, sediment transport and channel geomorphic response to various types of disturbance. Potential applications include studies to determine the geomorphic effectiveness of large floods and in-stream habitat change in response to disturbance. For certain applications, various spatial, temporal and data limitations may render the stream-gage information of limited use; however, such information often is of considerable value to enable or enhance geomorphic investigations.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"River Research and Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/rra.1163","issn":"15351459","usgsCitation":"Juracek, K.E., and Fitzpatrick, F., 2009, Geomorphic applications of stream-gage information: River Research and Applications, v. 25, no. 3, p. 329-347, https://doi.org/10.1002/rra.1163.","startPage":"329","endPage":"347","numberOfPages":"19","costCenters":[],"links":[{"id":245588,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":217631,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/rra.1163"}],"volume":"25","issue":"3","noUsgsAuthors":false,"publicationDate":"2009-02-18","publicationStatus":"PW","scienceBaseUri":"505a2781e4b0c8380cd59950","contributors":{"authors":[{"text":"Juracek, K. E. 0000-0002-2102-8980","orcid":"https://orcid.org/0000-0002-2102-8980","contributorId":44570,"corporation":false,"usgs":true,"family":"Juracek","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":458152,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fitzpatrick, F. A. 0000-0002-9748-7075","orcid":"https://orcid.org/0000-0002-9748-7075","contributorId":61446,"corporation":false,"usgs":true,"family":"Fitzpatrick","given":"F. A.","affiliations":[],"preferred":false,"id":458153,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036849,"text":"70036849 - 2009 - Predicting lesser scaup wetland use during spring migration in eastern South Dakota","interactions":[],"lastModifiedDate":"2012-03-12T17:21:59","indexId":"70036849","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1859,"text":"Great Plains Research","active":true,"publicationSubtype":{"id":10}},"title":"Predicting lesser scaup wetland use during spring migration in eastern South Dakota","docAbstract":"The relative influence of physical, chemical, and biotic wetland characteristics on wetland use by spring migrating lesser scaup (Aythya affinis [Eyton]; hereafter \"scaup\") is not well understood. We compared characteristics of used and unused wetlands in eastern South Dakota. Used wetlands were larger (>2 ha; P = 0.05), with higher amphipod densities (>500 individuals m-2; P = 0.01) and higher chlorophyll-a concentrations (>0.2; P < 0.05). These wetlands had lower ionic conductivity (1.8 mS; P = 0.02), lower nitrates (1.0 ppm; P = 0.01), lower submerged aquatic vegetation density (P < 0.01), and lower fine sediment proportions (???150 ??m grain size; P < 0.01). Wetland use was best described by amphipod and submerged aquatic vegetation densities. The predictive model explained 50.4% of the variation in scaup use in a reserve dataset. Thresholds of tolerance by amphipods in relation to wetland habitats in the upper Midwest should be investigated further as indicators of a broader range of water and habitat quality characteristics for scaup. ?? 2009 Copyright by the Center for Great Ploins Studies, University of Nebraska-Lincoln.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Great Plains Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","issn":"10525165","usgsCitation":"Kahara, S., and Chipps, S., 2009, Predicting lesser scaup wetland use during spring migration in eastern South Dakota: Great Plains Research, v. 19, no. 2, p. 157-167.","startPage":"157","endPage":"167","numberOfPages":"11","costCenters":[],"links":[{"id":245467,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"19","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a81b9e4b0c8380cd7b6c5","contributors":{"authors":[{"text":"Kahara, S.N.","contributorId":104298,"corporation":false,"usgs":true,"family":"Kahara","given":"S.N.","affiliations":[],"preferred":false,"id":458130,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Chipps, S. R. 0000-0001-6511-7582","orcid":"https://orcid.org/0000-0001-6511-7582","contributorId":40369,"corporation":false,"usgs":true,"family":"Chipps","given":"S. R.","affiliations":[],"preferred":false,"id":458129,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70036846,"text":"70036846 - 2009 - Using simulation to improve wildlife surveys: Wintering mallards in Mississippi, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:22:10","indexId":"70036846","displayToPublicDate":"2009-01-01T00:00:00","publicationYear":"2009","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3777,"text":"Wildlife Research","active":true,"publicationSubtype":{"id":10}},"title":"Using simulation to improve wildlife surveys: Wintering mallards in Mississippi, USA","docAbstract":"Wildlife conservation plans generally require reliable data about population abundance and density. Aerial surveys often can provide these data; however, associated costs necessitate designing and conducting surveys efficiently. We developed methods to simulate population distributions of mallards (Anas platyrhynchos) wintering in western Mississippi, USA, by combining bird observations from three previous strip-transect surveys and habitat data from three sets of satellite images representing conditions when surveys were conducted. For each simulated population distribution, we compared 12 primary survey designs and two secondary design options by using coefficients of variation (CV) of population indices as the primary criterion for assessing survey performance. In all, 3 of the 12 primary designs provided the best precision (CV???11.7%) and performed equally well (WR08082E1d.gif diff???0.6%). Features of the designs that provided the largest gains in precision were optimal allocation of sample effort among strata and configuring the study area into five rather than four strata, to more precisely estimate mallard indices in areas of consistently high density. Of the two secondary design options, we found including a second observer to double the size of strip transects increased precision or decreased costs, whereas ratio estimation using auxiliary habitat data from satellite images did not increase precision appreciably. We recommend future surveys of mallard populations in our study area use the strata we developed, optimally allocate samples among strata, employ PPS or EPS sampling, and include two observers when qualified staff are available. More generally, the methods we developed to simulate population distributions from prior survey data provide a cost-effective method to assess performance of alternative wildlife surveys critical to informing management decisions, and could be extended to account for effects of detectability on estimates of true abundance. ?? 2009 CSIRO.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wildlife Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1071/WR08082","issn":"10353712","usgsCitation":"Pearse, A., Reinecke, K.J., Dinsmore, S., and Kaminski, R., 2009, Using simulation to improve wildlife surveys: Wintering mallards in Mississippi, USA: Wildlife Research, v. 36, no. 4, p. 279-288, https://doi.org/10.1071/WR08082.","startPage":"279","endPage":"288","numberOfPages":"10","costCenters":[],"links":[{"id":217486,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1071/WR08082"},{"id":245437,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bc0a1e4b08c986b32a22f","contributors":{"authors":[{"text":"Pearse, A.T.","contributorId":56333,"corporation":false,"usgs":true,"family":"Pearse","given":"A.T.","email":"","affiliations":[],"preferred":false,"id":458120,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reinecke, K. J.","contributorId":54537,"corporation":false,"usgs":true,"family":"Reinecke","given":"K.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":458119,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dinsmore, S.J.","contributorId":85114,"corporation":false,"usgs":true,"family":"Dinsmore","given":"S.J.","email":"","affiliations":[],"preferred":false,"id":458121,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kaminski, R.M.","contributorId":53330,"corporation":false,"usgs":true,"family":"Kaminski","given":"R.M.","email":"","affiliations":[],"preferred":false,"id":458118,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}