{"pageNumber":"888","pageRowStart":"22175","pageSize":"25","recordCount":46734,"records":[{"id":70029812,"text":"70029812 - 2007 - Circum-Arctic petroleum systems identified using decision-tree chemometrics","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029812","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Circum-Arctic petroleum systems identified using decision-tree chemometrics","docAbstract":"Source- and age-related biomarker and isotopic data were measured for more than 1000 crude oil samples from wells and seeps collected above approximately 55??N latitude. A unique, multitiered chemometric (multivariate statistical) decision tree was created that allowed automated classification of 31 genetically distinct circumArctic oil families based on a training set of 622 oil samples. The method, which we call decision-tree chemometrics, uses principal components analysis and multiple tiers of K-nearest neighbor and SIMCA (soft independent modeling of class analogy) models to classify and assign confidence limits for newly acquired oil samples and source rock extracts. Geochemical data for each oil sample were also used to infer the age, lithology, organic matter input, depositional environment, and identity of its source rock. These results demonstrate the value of large petroleum databases where all samples were analyzed using the same procedures and instrumentation. Copyright ?? 2007. The American Association of Petroleum Geologists. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Association of Petroleum Geologists Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1306/12290606097","issn":"01491423","usgsCitation":"Peters, K.E., Ramos, L., Zumberge, J., Valin, Z., Scotese, C., and Gautier, D.L., 2007, Circum-Arctic petroleum systems identified using decision-tree chemometrics: American Association of Petroleum Geologists Bulletin, v. 91, no. 6, p. 877-913, https://doi.org/10.1306/12290606097.","startPage":"877","endPage":"913","numberOfPages":"37","costCenters":[],"links":[{"id":212920,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1306/12290606097"},{"id":240485,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f605e4b0c8380cd4c55a","contributors":{"authors":[{"text":"Peters, K. E.","contributorId":17295,"corporation":false,"usgs":true,"family":"Peters","given":"K.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":424430,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ramos, L.S.","contributorId":47503,"corporation":false,"usgs":true,"family":"Ramos","given":"L.S.","email":"","affiliations":[],"preferred":false,"id":424432,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zumberge, J.E.","contributorId":37867,"corporation":false,"usgs":true,"family":"Zumberge","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":424431,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Valin, Z. C. 0000-0001-6199-6700","orcid":"https://orcid.org/0000-0001-6199-6700","contributorId":75165,"corporation":false,"usgs":true,"family":"Valin","given":"Z. C.","affiliations":[],"preferred":false,"id":424434,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Scotese, C.R.","contributorId":16138,"corporation":false,"usgs":true,"family":"Scotese","given":"C.R.","affiliations":[],"preferred":false,"id":424429,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Gautier, D. L.","contributorId":69996,"corporation":false,"usgs":true,"family":"Gautier","given":"D.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":424433,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70029809,"text":"70029809 - 2007 - Interferogram formation in the presence of complex and large deformation","interactions":[],"lastModifiedDate":"2019-03-25T11:46:46","indexId":"70029809","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Interferogram formation in the presence of complex and large deformation","docAbstract":"<p>Sierra Negra volcano in Isabela island, Galápagos, erupted from October 22 to October 30 in 2005. During the 8 days of eruption, the center of Sierra Negra's caldera subsided about 5.4 meters. Three hours prior to the onset of the eruption, an earthquake (Mw 5.4) occurred, near the caldera. Because of the large and complex phase gradient due to the huge subsidence and the earthquake, it is difficult to form an interferogram inside the caldera that spans the eruption. The deformation is so large and spatially variable that the approximations used in existing InSAR software (ROI, ROI_PAC, DORIS, GAMMA) cannot properly coregister SAR image pairs spanning the eruption. We have developed here a two-step algorithm that can form intra-caldera interferograms from these data. The first step involves a \"rubber-sheeting\" SAR image coregistration. In the second step we use range offset estimates to mitigate the steep phase gradient. Using this new algorithm, we retrieve an interferogram with the best coverage to date inside the caldera of Sierra Negra.</p>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2007GL029745","issn":"00948276","usgsCitation":"Yun, S., Zebker, H., Segall, P., Hooper, A., and Poland, M.P., 2007, Interferogram formation in the presence of complex and large deformation: Geophysical Research Letters, v. 34, no. 12, 6 p., https://doi.org/10.1029/2007GL029745.","productDescription":"6 p.","costCenters":[{"id":336,"text":"Hawaiian Volcano Observatory","active":false,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":240420,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"Galápagos","otherGeospatial":"Isabela island, Sierra Negra volcano","volume":"34","issue":"12","noUsgsAuthors":false,"publicationDate":"2007-06-22","publicationStatus":"PW","scienceBaseUri":"505a3cfde4b0c8380cd631ec","contributors":{"authors":[{"text":"Yun, S.-H.","contributorId":11004,"corporation":false,"usgs":true,"family":"Yun","given":"S.-H.","email":"","affiliations":[],"preferred":false,"id":424415,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zebker, H.","contributorId":25276,"corporation":false,"usgs":false,"family":"Zebker","given":"H.","affiliations":[],"preferred":false,"id":424417,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Segall, P.","contributorId":44231,"corporation":false,"usgs":false,"family":"Segall","given":"P.","affiliations":[],"preferred":false,"id":424418,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hooper, A.","contributorId":19781,"corporation":false,"usgs":true,"family":"Hooper","given":"A.","email":"","affiliations":[],"preferred":false,"id":424416,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Poland, Michael P. 0000-0001-5240-6123 mpoland@usgs.gov","orcid":"https://orcid.org/0000-0001-5240-6123","contributorId":146118,"corporation":false,"usgs":true,"family":"Poland","given":"Michael","email":"mpoland@usgs.gov","middleInitial":"P.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":424419,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029807,"text":"70029807 - 2007 - Postfire soil burn severity mapping with hyperspectral image unmixing","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029807","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Postfire soil burn severity mapping with hyperspectral image unmixing","docAbstract":"Burn severity is mapped after wildfires to evaluate immediate and long-term fire effects on the landscape. Remotely sensed hyperspectral imagery has the potential to provide important information about fine-scale ground cover components that are indicative of burn severity after large wildland fires. Airborne hyperspectral imagery and ground data were collected after the 2002 Hayman Fire in Colorado to assess the application of high resolution imagery for burn severity mapping and to compare it to standard burn severity mapping methods. Mixture Tuned Matched Filtering (MTMF), a partial spectral unmixing algorithm, was used to identify the spectral abundance of ash, soil, and scorched and green vegetation in the burned area. The overall performance of the MTMF for predicting the ground cover components was satisfactory (r2 = 0.21 to 0.48) based on a comparison to fractional ash, soil, and vegetation cover measured on ground validation plots. The relationship between Landsat-derived differenced Normalized Burn Ratio (dNBR) values and the ground data was also evaluated (r2 = 0.20 to 0.58) and found to be comparable to the MTMF. However, the quantitative information provided by the fine-scale hyperspectral imagery makes it possible to more accurately assess the effects of the fire on the soil surface by identifying discrete ground cover characteristics. These surface effects, especially soil and ash cover and the lack of any remaining vegetative cover, directly relate to potential postfire watershed response processes. ?? 2006 Elsevier Inc. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Remote Sensing of Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.rse.2006.11.027","issn":"00344257","usgsCitation":"Robichaud, P., Lewis, S., Laes, D., Hudak, A., Kokaly, R., and Zamudio, J., 2007, Postfire soil burn severity mapping with hyperspectral image unmixing: Remote Sensing of Environment, v. 108, no. 4, p. 467-480, https://doi.org/10.1016/j.rse.2006.11.027.","startPage":"467","endPage":"480","numberOfPages":"14","costCenters":[],"links":[{"id":212836,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2006.11.027"},{"id":240385,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"108","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a7e81e4b0c8380cd7a5a7","contributors":{"authors":[{"text":"Robichaud, P.R.","contributorId":102691,"corporation":false,"usgs":true,"family":"Robichaud","given":"P.R.","email":"","affiliations":[],"preferred":false,"id":424412,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lewis, S.A.","contributorId":82132,"corporation":false,"usgs":true,"family":"Lewis","given":"S.A.","email":"","affiliations":[],"preferred":false,"id":424411,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Laes, D.Y.M.","contributorId":48760,"corporation":false,"usgs":true,"family":"Laes","given":"D.Y.M.","email":"","affiliations":[],"preferred":false,"id":424409,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hudak, A.T.","contributorId":60023,"corporation":false,"usgs":true,"family":"Hudak","given":"A.T.","email":"","affiliations":[],"preferred":false,"id":424410,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kokaly, R.F. 0000-0003-0276-7101","orcid":"https://orcid.org/0000-0003-0276-7101","contributorId":42381,"corporation":false,"usgs":true,"family":"Kokaly","given":"R.F.","affiliations":[],"preferred":false,"id":424408,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Zamudio, J.A.","contributorId":29436,"corporation":false,"usgs":true,"family":"Zamudio","given":"J.A.","email":"","affiliations":[],"preferred":false,"id":424407,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70029805,"text":"70029805 - 2007 - Distributed energy-balance modeling of snow-cover evolution and melt in rugged terrain: Tobacco Root Mountains, Montana, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029805","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Distributed energy-balance modeling of snow-cover evolution and melt in rugged terrain: Tobacco Root Mountains, Montana, USA","docAbstract":"A distributed energy-balance model was developed for simulating snowpack evolution and melt in rugged terrain. The model, which was applied to a 43-km2 watershed in the Tobacco Root Mountains, Montana, USA, used measured ambient data from nearby weather stations to drive energy-balance calculations and to constrain the model of Liston and Sturm [Liston, G.E., Sturm, M., 1998. A snow-transport model for complex terrain. Journal of Glaciology 44 (148), 498-516] for calculating the initial snowpack thickness. Simulated initial snow-water equivalent ranged between 1 cm and 385 cm w.e. (water equivalent) with high values concentrated on east-facing slopes below tall summits. An interpreted satellite image of the snowcover distribution on May 6, 1998, closely matched the simulated distribution with the greatest discrepancy occurring in the floor of the main trunk valley. Model simulations indicated that snowmelt commenced early in the melt season, but rapid meltout of snow cover did not occur until after the average energy balance of the entire watershed became positive about 45 days into the melt season. Meltout was fastest in the lower part of the watershed where warmer temperatures and tree cover enhanced the energy income of the underlying snow. An interpreted satellite image of the snowcover distribution on July 9, 1998 compared favorably with the simulated distribution, and melt curves for modeled canopy-covered cells mimicked the trends measured at nearby snow pillow stations. By the end of the simulation period (August 3), 28% of the watershed remained snow covered, most of which was concentrated in the highest parts of the watershed where initially thick accumulations had been shaded by surrounding summits. The results of this study provide further demonstration of the critical role that topography plays in the timing and magnitude of snowmelt from high mountain watersheds. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2006.12.012","issn":"00221694","usgsCitation":"Letsinger, S., and Olyphant, G., 2007, Distributed energy-balance modeling of snow-cover evolution and melt in rugged terrain: Tobacco Root Mountains, Montana, USA: Journal of Hydrology, v. 336, no. 1-2, p. 48-60, https://doi.org/10.1016/j.jhydrol.2006.12.012.","startPage":"48","endPage":"60","numberOfPages":"13","costCenters":[],"links":[{"id":212805,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2006.12.012"},{"id":240349,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"336","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0254e4b0c8380cd4ffe8","contributors":{"authors":[{"text":"Letsinger, S.L.","contributorId":50731,"corporation":false,"usgs":true,"family":"Letsinger","given":"S.L.","affiliations":[],"preferred":false,"id":424403,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Olyphant, G.A.","contributorId":51023,"corporation":false,"usgs":true,"family":"Olyphant","given":"G.A.","email":"","affiliations":[],"preferred":false,"id":424404,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029804,"text":"70029804 - 2007 - Geologic framework of the Mississippian Barnett Shale, Barnett-Paleozoic total petroleum system, Bend arch-Fort Worth Basin, Texas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029804","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":701,"text":"American Association of Petroleum Geologists Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Geologic framework of the Mississippian Barnett Shale, Barnett-Paleozoic total petroleum system, Bend arch-Fort Worth Basin, Texas","docAbstract":"This article describes the primary geologic characteristics and criteria of the Barnett Shale and Barnett-Paleozoic total petroleum system (TPS) of the Fort Worth Basin used to define two geographic areas of the Barnett Shale for petroleum resource assessment. From these two areas, referred to as \"assessment units,\" the U.S. Geological Survey estimated a mean volume of about 26 tcf of undiscovered, technically recoverable hydrocarbon gas in the Barnett Shale. The Mississippian Barnett Shale is the primary source rock for oil and gas produced from Paleozoic reservoir rocks in the Bend arch-Fort Worth Basin area and is also one of the most significant gas-producing formations in Texas. Subsurface mapping from well logs and commercial databases and petroleum geochemistry demonstrate that the Barnett Shale is organic rich and thermally mature for hydrocarbon generation over most of the Bend arch-Fort Worth Basin area. In the northeastern and structurally deepest part of the Fort Worth Basin adjacent to the Muenster arch, the formation is more than 1000 ft (305 m) thick and interbedded with thick limestone units; westward, it thins rapidly over the Mississippian Chappel shelf to only a few tens of feet. The Barnett-Paleozoic TPS is identified where thermally mature Barnett Shale has generated large volumes of hydrocarbons and is (1) contained within the Barnett Shale unconventional continuous accumulation and (2) expelled and distributed among numerous conventional clastic- and carbonate-rock reservoirs of Paleozoic age. Vitrinite reflectance (Ro) measurements show little correlation with present-day burial depth. Contours of equal Ro values measured from Barnett Shale and typing of produced hydrocarbons indicate significant uplift and erosion. Furthermore, the thermal history of the formation was enhanced by hydrothermal events along the Ouachita thrust front and Mineral Wells-Newark East fault system. Stratigraphy and thermal maturity define two gas-producing assessment units for the Barnett Shale: (1) a greater Newark East fracture-barrier continuous Barnett Shale gas assessment unit, encompassing an area of optimal gas production where dense impermeable limestones enclose thick (???300 ft; ???91 m) Barnett Shale that is within the gas-generation window (Ro ??? 1.1%); and (2) an extended continuous Barnett Shale gas assessment unit covering an area where the Barnett Shale is within the gas-generation window, but is less than 300 ft (91 m) thick, and either one or both of the overlying and underlying limestone barriers are absent. Copyright ?? 2007. The American Association of Petroleum Geologists. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"American Association of Petroleum Geologists Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1306/10300606008","issn":"01491423","usgsCitation":"Pollastro, R.M., Jarvie, D., Hill, R., and Adams, C., 2007, Geologic framework of the Mississippian Barnett Shale, Barnett-Paleozoic total petroleum system, Bend arch-Fort Worth Basin, Texas: American Association of Petroleum Geologists Bulletin, v. 91, no. 4, p. 405-436, https://doi.org/10.1306/10300606008.","startPage":"405","endPage":"436","numberOfPages":"32","costCenters":[],"links":[{"id":212804,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1306/10300606008"},{"id":240348,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"91","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a196fe4b0c8380cd559b1","contributors":{"authors":[{"text":"Pollastro, R. M.","contributorId":6809,"corporation":false,"usgs":true,"family":"Pollastro","given":"R.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":424399,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jarvie, D.M.","contributorId":69768,"corporation":false,"usgs":true,"family":"Jarvie","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":424400,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hill, R.J.","contributorId":92850,"corporation":false,"usgs":true,"family":"Hill","given":"R.J.","email":"","affiliations":[],"preferred":false,"id":424402,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Adams, C.W.","contributorId":80903,"corporation":false,"usgs":true,"family":"Adams","given":"C.W.","email":"","affiliations":[],"preferred":false,"id":424401,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029801,"text":"70029801 - 2007 - Coupling chemical weathering with soil production across soil-mantled landscapes","interactions":[],"lastModifiedDate":"2023-08-22T11:19:57.75735","indexId":"70029801","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1425,"text":"Earth Surface Processes and Landforms","active":true,"publicationSubtype":{"id":10}},"title":"Coupling chemical weathering with soil production across soil-mantled landscapes","docAbstract":"<div class=\"abstract-group  metis-abstract\"><div class=\"article-section__content en main\"><p>Soil-covered upland landscapes constitute a critical part of the habitable world. Our understanding of how they evolve as a function of different climatic, tectonic and geological regimes is important across a wide range of disciplines and depends, in part, on understanding the links between chemical and physical weathering processes. Extensive previous work has shown that soil production rates decrease with increasing soil column thickness, but chemical weathering rates were not measured. Here we examine a granitic, soil-mantled hillslope at Point Reyes, California, where soil production rates were determined using<span>&nbsp;</span><i>in situ</i><span>&nbsp;</span>produced cosmogenic nuclides (<sup>10</sup>Be and<span>&nbsp;</span><sup>26</sup>Al), and we quantify the extent as well as the rates of chemical weathering of the saprolite from beneath soil from across the landscape. We collected saprolite samples from the base of soil pits and analysed them for abrasion pH as well as for major and trace elements by X-ray fluorescence spectroscopy, and for clay mineralogy by X-ray diffraction spectroscopy. Our results show for the first time that chemical weathering rates decrease with increasing soil thickness and account for 13 to 51 per cent of total denudation. We also show that spatial variation in chemical weathering appears to be topographically controlled: weathering rate decreases with slope across the divergent ridge and increases with upslope contributing area in the convergent swale. Furthermore, to determine the best measure for the extent of saprolite weathering, we compared four different chemical weathering indices – the Vogt ratio, the chemical index of alteration (CIA), Parker's index, and the silicon–aluminium ratio – with saprolite pH. Measurements of the CIA were the most closely correlated with saprolite pH, showing that weathering intensity decreases linearly with an increase in saprolite pH from 4·7 to almost 7. Data presented here are among the first to couple directly rates of soil production and chemical weathering with how topography is likely to control weathering at a hillslope scale.&nbsp;</p></div></div>","language":"English","publisher":"Wiley","doi":"10.1002/esp.1443","issn":"01979337","usgsCitation":"Burke, B., Heimsath, A., and White, A.F., 2007, Coupling chemical weathering with soil production across soil-mantled landscapes: Earth Surface Processes and Landforms, v. 32, no. 6, p. 853-873, https://doi.org/10.1002/esp.1443.","productDescription":"21 p.","startPage":"853","endPage":"873","numberOfPages":"21","costCenters":[],"links":[{"id":240278,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"6","noUsgsAuthors":false,"publicationDate":"2006-10-17","publicationStatus":"PW","scienceBaseUri":"5059fc8ce4b0c8380cd4e2eb","contributors":{"authors":[{"text":"Burke, B.C.","contributorId":45521,"corporation":false,"usgs":true,"family":"Burke","given":"B.C.","email":"","affiliations":[],"preferred":false,"id":424391,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Heimsath, A.M.","contributorId":52781,"corporation":false,"usgs":true,"family":"Heimsath","given":"A.M.","affiliations":[],"preferred":false,"id":424392,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"White, A. F.","contributorId":36546,"corporation":false,"usgs":true,"family":"White","given":"A.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":424390,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029789,"text":"70029789 - 2007 - Differentiating the Bishop ash bed and related tephra layers by elemental-based similarity coefficients of volcanic glass shards using solution inductively coupled plasma-mass spectrometry (S-ICP-MS)","interactions":[],"lastModifiedDate":"2023-08-25T11:13:36.003519","indexId":"70029789","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3217,"text":"Quaternary International","active":true,"publicationSubtype":{"id":10}},"title":"Differentiating the Bishop ash bed and related tephra layers by elemental-based similarity coefficients of volcanic glass shards using solution inductively coupled plasma-mass spectrometry (S-ICP-MS)","docAbstract":"<div id=\"abstracts\" class=\"Abstracts u-font-gulliver text-s\"><div id=\"aep-abstract-id7\" class=\"abstract author\"><div id=\"aep-abstract-sec-id8\"><p>Volcanic glass samples from the same volcanic center (intra-source) often have a similar major-element composition. Thus, it can be difficult to distinguish between individual tephra layers, particularly when using similarity coefficients calculated from electron microprobe major-element measurements. Minor/trace element concentrations in glass can be determined by solution inductively coupled plasma mass spectrometry (S-ICP-MS), but have not been shown as suitable for use in large tephrochronologic databases. Here, we present minor/trace-element concentrations measured by S-ICP-MS and compare these data by similarity coefficients, the method commonly used in large databases. Trial samples from the Bishop Tuff, the upper and lower tuffs of Glass Mountain and the tuffs of Mesquite Spring suites from eastern California, USA, which have an indistinguishable major-element composition, were analyzed using S-ICP-MS. The resulting minor/trace element similarity coefficients clearly separated the suites of tephra layers and, in most cases, individual tephra layers within each suite. Comparisons with previous instrumental neutron activation analysis (INAA) elemental measurements were marginally successful. This is important step toward quantitative correlation in large tephrochronologic databases to achieve definitive identification of volcanic glass samples and for high-resolution age determinations.</p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/j.quaint.2006.12.014","issn":"10406182","usgsCitation":"Knott, J., Sarna-Wojcicki, A., Montanez, I., and Wan, E., 2007, Differentiating the Bishop ash bed and related tephra layers by elemental-based similarity coefficients of volcanic glass shards using solution inductively coupled plasma-mass spectrometry (S-ICP-MS): Quaternary International, v. 166, no. 1, p. 79-86, https://doi.org/10.1016/j.quaint.2006.12.014.","productDescription":"8 p.","startPage":"79","endPage":"86","numberOfPages":"8","costCenters":[],"links":[{"id":240645,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"166","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0106e4b0c8380cd4fa59","contributors":{"authors":[{"text":"Knott, J.R.","contributorId":26847,"corporation":false,"usgs":true,"family":"Knott","given":"J.R.","affiliations":[],"preferred":false,"id":424343,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sarna-Wojcicki, A.M. 0000-0002-0244-9149","orcid":"https://orcid.org/0000-0002-0244-9149","contributorId":104022,"corporation":false,"usgs":true,"family":"Sarna-Wojcicki","given":"A.M.","affiliations":[],"preferred":false,"id":424345,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Montanez, I.P.","contributorId":64827,"corporation":false,"usgs":true,"family":"Montanez","given":"I.P.","affiliations":[],"preferred":false,"id":424344,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wan, E.","contributorId":15836,"corporation":false,"usgs":true,"family":"Wan","given":"E.","email":"","affiliations":[],"preferred":false,"id":424342,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029786,"text":"70029786 - 2007 - Mapping an invasive plant, Phragmites australis, in coastal wetlands using the EO-1 Hyperion hyperspectral sensor","interactions":[],"lastModifiedDate":"2017-04-14T13:15:45","indexId":"70029786","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Mapping an invasive plant, Phragmites australis, in coastal wetlands using the EO-1 Hyperion hyperspectral sensor","docAbstract":"Mapping tools are needed to document the location and extent of Phragmites australis, a tall grass that invades coastal marshes throughout North America, displacing native plant species and degrading wetland habitat. Mapping Phragmites is particularly challenging in the freshwater Great Lakes coastal wetlands due to dynamic lake levels and vegetation diversity. We tested the applicability of Hyperion hyperspectral satellite imagery for mapping Phragmites in wetlands of the west coast of Green Bay in Wisconsin, U.S.A. A reference spectrum created using Hyperion data from several pure Phragmites stands within the image was used with a Spectral Correlation Mapper (SCM) algorithm to create a raster map with values ranging from 0 to 1, where 0 represented the greatest similarity between the reference spectrum and the image spectrum and 1 the least similarity. The final two-class thematic classification predicted monodominant Phragmites covering 3.4% of the study area. Most of this was concentrated in long linear features parallel to the Green Bay shoreline, particularly in areas that had been under water only six years earlier when lake levels were 66??cm higher. An error matrix using spring 2005 field validation points (n = 129) showed good overall accuracy-81.4%. The small size and linear arrangement of Phragmites stands was less than optimal relative to the sensor resolution, and Hyperion's 30??m resolution captured few if any pure pixels. Contemporary Phragmites maps prepared with Hyperion imagery would provide wetland managers with a tool that they currently lack, which could aid attempts to stem the spread of this invasive species. ?? 2006 Elsevier Inc. All rights reserved.","language":"English","publisher":"Elsevier","doi":"10.1016/j.rse.2006.11.002","issn":"00344257","usgsCitation":"Pengra, B., Johnston, C., and Loveland, T.R., 2007, Mapping an invasive plant, Phragmites australis, in coastal wetlands using the EO-1 Hyperion hyperspectral sensor: Remote Sensing of Environment, v. 108, no. 1, p. 74-81, https://doi.org/10.1016/j.rse.2006.11.002.","productDescription":"8 p.","startPage":"74","endPage":"81","numberOfPages":"8","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":213032,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2006.11.002"},{"id":240612,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"108","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a504be4b0c8380cd6b5b2","contributors":{"authors":[{"text":"Pengra, Bruce 0000-0003-2497-8284 bpengra@usgs.gov","orcid":"https://orcid.org/0000-0003-2497-8284","contributorId":5132,"corporation":false,"usgs":true,"family":"Pengra","given":"Bruce","email":"bpengra@usgs.gov","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true},{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"preferred":true,"id":424331,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Johnston, C.A.","contributorId":42175,"corporation":false,"usgs":true,"family":"Johnston","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":424332,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Loveland, Thomas R. 0000-0003-3114-6646 loveland@usgs.gov","orcid":"https://orcid.org/0000-0003-3114-6646","contributorId":140256,"corporation":false,"usgs":true,"family":"Loveland","given":"Thomas","email":"loveland@usgs.gov","middleInitial":"R.","affiliations":[{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":false,"id":424333,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029785,"text":"70029785 - 2007 - L-moments and TL-moments of the generalized lambda distribution","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70029785","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1309,"text":"Computational Statistics and Data Analysis","active":true,"publicationSubtype":{"id":10}},"title":"L-moments and TL-moments of the generalized lambda distribution","docAbstract":"The 4-parameter generalized lambda distribution (GLD) is a flexible distribution capable of mimicking the shapes of many distributions and data samples including those with heavy tails. The method of L-moments and the recently developed method of trimmed L-moments (TL-moments) are attractive techniques for parameter estimation for heavy-tailed distributions for which the L- and TL-moments have been defined. Analytical solutions for the first five L- and TL-moments in terms of GLD parameters are derived. Unfortunately, numerical methods are needed to compute the parameters from the L- or TL-moments. Algorithms are suggested for parameter estimation. Application of the GLD using both L- and TL-moment parameter estimates from example data is demonstrated, and comparison of the L-moment fit of the 4-parameter kappa distribution is made. A small simulation study of the 98th percentile (far-right tail) is conducted for a heavy-tail GLD with high-outlier contamination. The simulations show, with respect to estimation of the 98th-percent quantile, that TL-moments are less biased (more robost) in the presence of high-outlier contamination. However, the robustness comes at the expense of considerably more sampling variability. ?? 2006 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Computational Statistics and Data Analysis","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.csda.2006.07.016","issn":"01679473","usgsCitation":"Asquith, W., 2007, L-moments and TL-moments of the generalized lambda distribution: Computational Statistics and Data Analysis, v. 51, no. 9, p. 4484-4496, https://doi.org/10.1016/j.csda.2006.07.016.","startPage":"4484","endPage":"4496","numberOfPages":"13","costCenters":[],"links":[{"id":213001,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.csda.2006.07.016"},{"id":240580,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"51","issue":"9","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a40d2e4b0c8380cd6507c","contributors":{"authors":[{"text":"Asquith, W.H.","contributorId":87980,"corporation":false,"usgs":true,"family":"Asquith","given":"W.H.","email":"","affiliations":[],"preferred":false,"id":424330,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70029784,"text":"70029784 - 2007 - Mapping moderate-scale land-cover over very large geographic areas within a collaborative framework: A case study of the Southwest Regional Gap Analysis Project (SWReGAP)","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70029784","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","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":"Mapping moderate-scale land-cover over very large geographic areas within a collaborative framework: A case study of the Southwest Regional Gap Analysis Project (SWReGAP)","docAbstract":"Land-cover mapping efforts within the USGS Gap Analysis Program have traditionally been state-centered; each state having the responsibility of implementing a project design for the geographic area within their state boundaries. The Southwest Regional Gap Analysis Project (SWReGAP) was the first formal GAP project designed at a regional, multi-state scale. The project area comprises the southwestern states of Arizona, Colorado, Nevada, New Mexico, and Utah. The land-cover map/dataset was generated using regionally consistent geospatial data (Landsat ETM+ imagery (1999-2001) and DEM derivatives), similar field data collection protocols, a standardized land-cover legend, and a common modeling approach (decision tree classifier). Partitioning of mapping responsibilities amongst the five collaborating states was organized around ecoregion-based \"mapping zones\". Over the course of 21/2 field seasons approximately 93,000 reference samples were collected directly, or obtained from other contemporary projects, for the land-cover modeling effort. The final map was made public in 2004 and contains 125 land-cover classes. An internal validation of 85 of the classes, representing 91% of the land area was performed. Agreement between withheld samples and the validated dataset was 61% (KHAT = .60, n = 17,030). This paper presents an overview of the methodologies used to create the regional land-cover dataset and highlights issues associated with large-area mapping within a coordinated, multi-institutional management framework. ?? 2006 Elsevier Inc. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Remote Sensing of Environment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.rse.2006.11.008","issn":"00344257","usgsCitation":"Lowry, J., Ramsey, R., Thomas, K., Schrupp, D., Sajwaj, T., Kirby, J., Waller, E., Schrader, S., Falzarano, S., Langs, L., Manis, G., Wallace, C., Schulz, K., Comer, P., Pohs, K., Rieth, W., Velasquez, C., Wolk, B., Kepner, W., Boykin, K., O’Brien, L., Bradford, D., Thompson, B., and Prior-Magee, J., 2007, Mapping moderate-scale land-cover over very large geographic areas within a collaborative framework: A case study of the Southwest Regional Gap Analysis Project (SWReGAP): Remote Sensing of Environment, v. 108, no. 1, p. 59-73, https://doi.org/10.1016/j.rse.2006.11.008.","startPage":"59","endPage":"73","numberOfPages":"15","costCenters":[],"links":[{"id":213000,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.rse.2006.11.008"},{"id":240579,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"108","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a5060e4b0c8380cd6b664","contributors":{"authors":[{"text":"Lowry, J.","contributorId":82925,"corporation":false,"usgs":true,"family":"Lowry","given":"J.","email":"","affiliations":[],"preferred":false,"id":424324,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ramsey, R.D.","contributorId":46768,"corporation":false,"usgs":true,"family":"Ramsey","given":"R.D.","email":"","affiliations":[],"preferred":false,"id":424317,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Thomas, K.","contributorId":37962,"corporation":false,"usgs":true,"family":"Thomas","given":"K.","email":"","affiliations":[],"preferred":false,"id":424313,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Schrupp, D.","contributorId":92494,"corporation":false,"usgs":true,"family":"Schrupp","given":"D.","email":"","affiliations":[],"preferred":false,"id":424326,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Sajwaj, T.","contributorId":51986,"corporation":false,"usgs":true,"family":"Sajwaj","given":"T.","email":"","affiliations":[],"preferred":false,"id":424319,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kirby, J.","contributorId":45522,"corporation":false,"usgs":true,"family":"Kirby","given":"J.","affiliations":[],"preferred":false,"id":424316,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Waller, E.","contributorId":54389,"corporation":false,"usgs":true,"family":"Waller","given":"E.","email":"","affiliations":[],"preferred":false,"id":424320,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Schrader, S.","contributorId":10625,"corporation":false,"usgs":true,"family":"Schrader","given":"S.","email":"","affiliations":[],"preferred":false,"id":424307,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Falzarano, S.","contributorId":35954,"corporation":false,"usgs":true,"family":"Falzarano","given":"S.","email":"","affiliations":[],"preferred":false,"id":424312,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Langs, L.","contributorId":73015,"corporation":false,"usgs":true,"family":"Langs","given":"L.","email":"","affiliations":[],"preferred":false,"id":424322,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Manis, G.","contributorId":86977,"corporation":false,"usgs":true,"family":"Manis","given":"G.","email":"","affiliations":[],"preferred":false,"id":424325,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Wallace, C.","contributorId":26885,"corporation":false,"usgs":true,"family":"Wallace","given":"C.","affiliations":[],"preferred":false,"id":424310,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Schulz, K.","contributorId":98544,"corporation":false,"usgs":true,"family":"Schulz","given":"K.","affiliations":[],"preferred":false,"id":424328,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Comer, P.","contributorId":67281,"corporation":false,"usgs":true,"family":"Comer","given":"P.","email":"","affiliations":[],"preferred":false,"id":424321,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Pohs, K.","contributorId":100615,"corporation":false,"usgs":true,"family":"Pohs","given":"K.","email":"","affiliations":[],"preferred":false,"id":424329,"contributorType":{"id":1,"text":"Authors"},"rank":15},{"text":"Rieth, W.","contributorId":92495,"corporation":false,"usgs":true,"family":"Rieth","given":"W.","email":"","affiliations":[],"preferred":false,"id":424327,"contributorType":{"id":1,"text":"Authors"},"rank":16},{"text":"Velasquez, C.","contributorId":48392,"corporation":false,"usgs":true,"family":"Velasquez","given":"C.","email":"","affiliations":[],"preferred":false,"id":424318,"contributorType":{"id":1,"text":"Authors"},"rank":17},{"text":"Wolk, B.","contributorId":37963,"corporation":false,"usgs":true,"family":"Wolk","given":"B.","email":"","affiliations":[],"preferred":false,"id":424314,"contributorType":{"id":1,"text":"Authors"},"rank":18},{"text":"Kepner, W.","contributorId":20498,"corporation":false,"usgs":true,"family":"Kepner","given":"W.","affiliations":[],"preferred":false,"id":424309,"contributorType":{"id":1,"text":"Authors"},"rank":19},{"text":"Boykin, K.","contributorId":10226,"corporation":false,"usgs":true,"family":"Boykin","given":"K.","email":"","affiliations":[],"preferred":false,"id":424306,"contributorType":{"id":1,"text":"Authors"},"rank":20},{"text":"O’Brien, L.","contributorId":43574,"corporation":false,"usgs":true,"family":"O’Brien","given":"L.","email":"","affiliations":[],"preferred":false,"id":424315,"contributorType":{"id":1,"text":"Authors"},"rank":21},{"text":"Bradford, D.","contributorId":35265,"corporation":false,"usgs":true,"family":"Bradford","given":"D.","email":"","affiliations":[],"preferred":false,"id":424311,"contributorType":{"id":1,"text":"Authors"},"rank":22},{"text":"Thompson, B.","contributorId":13810,"corporation":false,"usgs":true,"family":"Thompson","given":"B.","affiliations":[],"preferred":false,"id":424308,"contributorType":{"id":1,"text":"Authors"},"rank":23},{"text":"Prior-Magee, J.","contributorId":79711,"corporation":false,"usgs":true,"family":"Prior-Magee","given":"J.","affiliations":[],"preferred":false,"id":424323,"contributorType":{"id":1,"text":"Authors"},"rank":24}]}}
,{"id":70029782,"text":"70029782 - 2007 - Satellite telemetry and prey sampling reveal contaminant sources to pacific northwest ospreys","interactions":[],"lastModifiedDate":"2017-11-15T10:17:55","indexId":"70029782","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1450,"text":"Ecological Applications","active":true,"publicationSubtype":{"id":10}},"title":"Satellite telemetry and prey sampling reveal contaminant sources to pacific northwest ospreys","docAbstract":"Migratory behavior can be an important factor in determining contaminant exposure in avian populations. Accumulation of organochlorine (OC) pesticides while birds are wintering in tropical regions has been cited often as the reason for high concentrations in migrant populations. To explore this issue, we satellite tracked 16 Ospreys (Pandion haliaetus) over the period 1996-2003 from breeding sites in British Columbia, Canada, and integrated the results into a database on 15 Ospreys that were satellite tracked over the period 1995-1999, from breeding locations in Washington and Oregon, USA. Data on wintering sites of 31 Ospreys in Mexico and Central America were used for spatially targeted sampling of prey fish. Concentrations of the main organochlorine contaminant, p,p???-dichloro-diphenyl-dichloroethylene (DDE), in fish composites from Mexico ranged from 0.005 to 0.115 ??g/g wet mass. Significant differences existed among fish families in p,p???-DDE, total dichloro- diphenyltrichloroethane (??DDT), ??chlordanes, and total polychlorinated biphenyls (??PCBs). Catfish (family Ariidae) generally had significantly higher levels of DDT metabolites and other organochlorine contaminants compared to other fish families collected. Differences in prey contaminant levels were detected among the collection sites around coastal Mexico, with fish from Veracruz State generally having higher levels of DDT metabolites, ??chlordanes, ??PCBs, and hexachlorobenzene. Eggs collected from 16 nests throughout the Pacific Northwest (nine from British Columbia, seven from Oregon and Washington) where Ospreys had been satellite tagged, showed marked variation in levels of DDT metabolites (p,p???-DDE; range 0.02-10.14 ??g/g). Wintering site had no significant effect on contaminant concentrations in sample eggs from those specific Ospreys; rather concentrations of p,p???-DDE, were predicted by breeding sites with highest levels in eggs of Ospreys breeding in the lower Columbia River, consistent with published reports of continued high concentrations of DDT and related compounds in that system. ?? 2007 by the Ecological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecological Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1890/06-1213","issn":"10510761","usgsCitation":"Elliott, J.E., Morrissey, C., Henny, C.J., Inzunza, E., and Shaw, P., 2007, Satellite telemetry and prey sampling reveal contaminant sources to pacific northwest ospreys: Ecological Applications, v. 17, no. 4, p. 1223-1233, https://doi.org/10.1890/06-1213.","startPage":"1223","endPage":"1233","numberOfPages":"11","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":240548,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212974,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/06-1213"}],"volume":"17","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b86e6e4b08c986b3161c5","contributors":{"authors":[{"text":"Elliott, J. E.","contributorId":19914,"corporation":false,"usgs":true,"family":"Elliott","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":424297,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morrissey, C.A.","contributorId":35548,"corporation":false,"usgs":true,"family":"Morrissey","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":424298,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Henny, Charles J.","contributorId":12578,"corporation":false,"usgs":true,"family":"Henny","given":"Charles","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":424296,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Inzunza, E.R.","contributorId":82532,"corporation":false,"usgs":true,"family":"Inzunza","given":"E.R.","email":"","affiliations":[],"preferred":false,"id":424299,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Shaw, P.","contributorId":103475,"corporation":false,"usgs":true,"family":"Shaw","given":"P.","email":"","affiliations":[],"preferred":false,"id":424300,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029779,"text":"70029779 - 2007 - The role of historical fire disturbance in the carbon dynamics of the pan-boreal region: A process-based analysis","interactions":[],"lastModifiedDate":"2023-08-03T11:23:14.316745","indexId":"70029779","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2319,"text":"Journal of Geophysical Research G: Biogeosciences","active":true,"publicationSubtype":{"id":10}},"title":"The role of historical fire disturbance in the carbon dynamics of the pan-boreal region: A process-based analysis","docAbstract":"<div class=\" metis-abstract\"><div class=\"article-section__content en main\"><p><span class=\"paraNumber\">[1]<span>&nbsp;</span></span>Wildfire is a common occurrence in ecosystems of northern high latitudes, and changes in the fire regime of this region have consequences for carbon feedbacks to the climate system. To improve our understanding of how wildfire influences carbon dynamics of this region, we used the process-based Terrestrial Ecosystem Model to simulate fire emissions and changes in carbon storage north of 45°N from the start of spatially explicit historically recorded fire records in the twentieth century through 2002, and evaluated the role of fire in the carbon dynamics of the region within the context of ecosystem responses to changes in atmospheric CO<sub>2</sub><span>&nbsp;</span>concentration and climate. Our analysis indicates that fire plays an important role in interannual and decadal scale variation of source/sink relationships of northern terrestrial ecosystems and also suggests that atmospheric CO<sub>2</sub><span>&nbsp;</span>may be important to consider in addition to changes in climate and fire disturbance. There are substantial uncertainties in the effects of fire on carbon storage in our simulations. These uncertainties are associated with sparse fire data for northern Eurasia, uncertainty in estimating carbon consumption, and difficulty in verifying assumptions about the representation of fires that occurred prior to the start of the historical fire record. To improve the ability to better predict how fire will influence carbon storage of this region in the future, new analyses of the retrospective role of fire in the carbon dynamics of northern high latitudes should address these uncertainties.</p></div></div>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006JG000380","issn":"01480227","usgsCitation":"Balshi, M.S., McGuire, A., Zhuang, Q., Melillo, J., Kicklighter, D., Kasischke, E., Wirth, C., Flannigan, M., Harden, J., Clein, J.S., Burnside, T., McAllister, J., Kurz, W., Apps, M., and Shvidenko, A., 2007, The role of historical fire disturbance in the carbon dynamics of the pan-boreal region: A process-based analysis: Journal of Geophysical Research G: Biogeosciences, v. 112, no. 2, 18 p., https://doi.org/10.1029/2006JG000380.","productDescription":"18 p.","costCenters":[],"links":[{"id":477082,"rank":2,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2006jg000380","text":"Publisher Index Page"},{"id":240484,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"2","noUsgsAuthors":false,"publicationDate":"2007-06-20","publicationStatus":"PW","scienceBaseUri":"505baf77e4b08c986b3247f4","contributors":{"authors":[{"text":"Balshi, M. S.","contributorId":9469,"corporation":false,"usgs":false,"family":"Balshi","given":"M.","email":"","middleInitial":"S.","affiliations":[{"id":7211,"text":"University of Alaska, Fairbanks","active":true,"usgs":false}],"preferred":false,"id":424264,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGuire, A. D.","contributorId":16552,"corporation":false,"usgs":true,"family":"McGuire","given":"A. D.","affiliations":[],"preferred":false,"id":424267,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zhuang, Q.","contributorId":40772,"corporation":false,"usgs":true,"family":"Zhuang","given":"Q.","email":"","affiliations":[],"preferred":false,"id":424272,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Melillo, J.","contributorId":33081,"corporation":false,"usgs":false,"family":"Melillo","given":"J.","affiliations":[{"id":13206,"text":"Sea Education Association, Woods Hole, Massachusetts","active":true,"usgs":false}],"preferred":false,"id":424270,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kicklighter, D. W.","contributorId":31537,"corporation":false,"usgs":false,"family":"Kicklighter","given":"D. W.","affiliations":[{"id":13627,"text":"Woods Hole Oceanographic Institution, Woods Hole, MA","active":true,"usgs":false}],"preferred":false,"id":424269,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kasischke, E.","contributorId":58803,"corporation":false,"usgs":true,"family":"Kasischke","given":"E.","email":"","affiliations":[],"preferred":false,"id":424274,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wirth, C.","contributorId":87334,"corporation":false,"usgs":false,"family":"Wirth","given":"C.","email":"","affiliations":[],"preferred":false,"id":424278,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Flannigan, M.","contributorId":62391,"corporation":false,"usgs":false,"family":"Flannigan","given":"M.","affiliations":[{"id":13540,"text":"Canadian Forest Service","active":true,"usgs":false}],"preferred":false,"id":424275,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Harden, J.","contributorId":43918,"corporation":false,"usgs":true,"family":"Harden","given":"J.","email":"","affiliations":[],"preferred":false,"id":424273,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Clein, Joy S.","contributorId":83697,"corporation":false,"usgs":true,"family":"Clein","given":"Joy","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":424277,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Burnside, T.J.","contributorId":73014,"corporation":false,"usgs":true,"family":"Burnside","given":"T.J.","email":"","affiliations":[],"preferred":false,"id":424276,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"McAllister, J.","contributorId":24998,"corporation":false,"usgs":true,"family":"McAllister","given":"J.","email":"","affiliations":[],"preferred":false,"id":424268,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Kurz, W.A.","contributorId":9867,"corporation":false,"usgs":true,"family":"Kurz","given":"W.A.","email":"","affiliations":[],"preferred":false,"id":424265,"contributorType":{"id":1,"text":"Authors"},"rank":13},{"text":"Apps, M.","contributorId":33092,"corporation":false,"usgs":true,"family":"Apps","given":"M.","email":"","affiliations":[],"preferred":false,"id":424271,"contributorType":{"id":1,"text":"Authors"},"rank":14},{"text":"Shvidenko, A.","contributorId":10197,"corporation":false,"usgs":true,"family":"Shvidenko","given":"A.","email":"","affiliations":[],"preferred":false,"id":424266,"contributorType":{"id":1,"text":"Authors"},"rank":15}]}}
,{"id":70029776,"text":"70029776 - 2007 - Ranking Alaska moose nutrition: Signals to begin liberal antlerless harvests","interactions":[],"lastModifiedDate":"2018-04-04T10:18:49","indexId":"70029776","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2508,"text":"Journal of Wildlife Management","active":true,"publicationSubtype":{"id":10}},"title":"Ranking Alaska moose nutrition: Signals to begin liberal antlerless harvests","docAbstract":"<p><span>We focused on describing low nutritional status in an increasing moose (</span><i>Alces alces gigas</i><span>) population with reduced predation in Game Management Unit (GMU) 20A near Fairbanks, Alaska, USA. A skeptical public disallowed liberal antlerless harvests of this moose population until we provided convincing data on low nutritional status. We ranked nutritional status in 15 Alaska moose populations (in boreal forests and coastal tundra) based on multiyear twinning rates. Data on age-of-first-reproduction and parturition rates provided a ranking consistent with twinning rates in the 6 areas where comparative data were available. Also, short-yearling mass provided a ranking consistent with twinning rates in 5 of the 6 areas where data were available. Data from 5 areas implied an inverse relationship between twinning rate and browse removal rate. Only in GMU 20A did nutritional indices reach low levels where justification for halting population growth was apparent, which supports prior findings that nutrition is a minor factor limiting most Alaska moose populations compared to predation. With predator reductions, the GMU 20A moose population increased from 1976 until liberal antlerless harvests in 2004. During 1997–2005, GMU 20A moose exhibited the lowest nutritional status reported to date for wild, noninsular, North American populations, including 1) delayed reproduction until moose reached 36 months of age and the lowest parturition rate among 36-month-old moose (29%,<span>&nbsp;</span></span><i>n</i><span><span>&nbsp;</span>= 147); 2) the lowest average multiyear twinning rates from late-May aerial surveys (</span><i>x̄</i><span><span>&nbsp;</span>= 7%, SE = 0.9%,<span>&nbsp;</span></span><i>n</i><span><span>&nbsp;</span>= 9 yr, range = 3–10%) and delayed twinning until moose reached 60 months of age; 3) the lowest average mass of female short-yearlings in Alaska (</span><i>x̄</i><span><span>&nbsp;</span>= 155 ± 1.6 [SE] kg in the Tanana Flats subpopulation, up to 58 kg below average masses found elsewhere); and 4) high removal (42%) of current annual browse biomass compared to 9–26% elsewhere in boreal forests. When average multiyear twinning rates in GMU 20A (sampled during 1960–2005) declined to &lt;10% in the mid- to late 1990s, we began encouraging liberal antlerless harvests, but only conservative annual harvests of 61–76 antlerless moose were achieved during 1996–2001. Using data in the context of our broader ranking system, we convinced skeptical citizen advisory committees to allow liberal antlerless harvests of 600–690 moose in 2004 and 2005, with the objective of halting population growth of the 16,000–17,000 moose; total harvests were 7–8% of total prehunt numbers. The resulting liberal antlerless harvests served to protect the moose population's health and habitat and to fulfill a mandate for elevated yield. Liberal antlerless harvests appear justified to halt population growth when multiyear twinning rates average ≤10% and ≥1 of the following signals substantiate low nutritional status: &lt;50% of 36-month-old moose are parturient, average multiyear short-yearling mass is &lt;175 kg, or &gt;35% of annual browse biomass is removed by moose.</span></p>","language":"English","publisher":"The Wildlife Society","doi":"10.2193/2006-159","usgsCitation":"Boertje, R.D., Kellie, K.A., Seaton, C.T., Keech, M.A., Young, D., Dale, B.W., Adams, L., and Aderman, A.R., 2007, Ranking Alaska moose nutrition: Signals to begin liberal antlerless harvests: Journal of Wildlife Management, v. 71, no. 5, p. 1494-1506, https://doi.org/10.2193/2006-159.","productDescription":"13 p.","startPage":"1494","endPage":"1506","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":240449,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"71","issue":"5","noUsgsAuthors":false,"publicationDate":"2010-12-13","publicationStatus":"PW","scienceBaseUri":"505a94ade4b0c8380cd81559","contributors":{"authors":[{"text":"Boertje, Rodney D.","contributorId":84953,"corporation":false,"usgs":false,"family":"Boertje","given":"Rodney","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":424247,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kellie, Kalin A.","contributorId":118779,"corporation":false,"usgs":false,"family":"Kellie","given":"Kalin","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424245,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Seaton, C. Tom","contributorId":139085,"corporation":false,"usgs":false,"family":"Seaton","given":"C.","email":"","middleInitial":"Tom","affiliations":[],"preferred":false,"id":424243,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Keech, Mark A.","contributorId":74958,"corporation":false,"usgs":false,"family":"Keech","given":"Mark","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":424246,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Young, Donald D.","contributorId":191905,"corporation":false,"usgs":false,"family":"Young","given":"Donald D.","affiliations":[],"preferred":false,"id":424241,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Dale, Bruce W.","contributorId":6769,"corporation":false,"usgs":true,"family":"Dale","given":"Bruce","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":424244,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Adams, Layne G. 0000-0001-6212-2896 ladams@usgs.gov","orcid":"https://orcid.org/0000-0001-6212-2896","contributorId":2776,"corporation":false,"usgs":true,"family":"Adams","given":"Layne G.","email":"ladams@usgs.gov","affiliations":[{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":424248,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Aderman, Andrew R.","contributorId":29220,"corporation":false,"usgs":false,"family":"Aderman","given":"Andrew","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":424242,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70029768,"text":"70029768 - 2007 - Conservation biology for suites of species: Demographic modeling for Pacific island kingfishers","interactions":[],"lastModifiedDate":"2017-11-15T13:42:40","indexId":"70029768","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1015,"text":"Biological Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Conservation biology for suites of species: Demographic modeling for Pacific island kingfishers","docAbstract":"Conservation practitioners frequently extrapolate data from single-species investigations when managing critically endangered populations. However, few researchers initiate work with the intent of making findings useful to conservation efforts for other species. We presented and explored the concept of conducting conservation-oriented research for suites of geographically separated populations with similar natural histories, resource needs, and extinction threats. An example was provided in the form of an investigation into the population demography of endangered Micronesian kingfishers (Todiramphus cinnamominus). We provided the first demographic parameter estimates for any of the 12 endangered Pacific Todiramphus species, and used results to develop a population projection matrix model for management throughout the insular Pacific. Further, we used the model for elasticity and simulation analyses with demographic values that randomly varied across ranges that might characterize congener populations. Results from elasticity and simulation analyses indicated that changes in breeding adult survival exerted the greatest magnitude of influence on population dynamics. However, changes in nestling survival were more consistently correlated with population dynamics as demographic rates were randomly altered. We concluded that conservation practitioners working with endangered Pacific kingfishers should primarily focus efforts on factors affecting nestling and breeder survival, and secondarily address fledgling juveniles and helpers. Further, we described how the generalized base model might be changed to focus on individual populations and discussed the potential application of multi-species models to other conservation situations. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.biocon.2006.12.023","issn":"00063207","usgsCitation":"Kesler, D., and Haig, S.M., 2007, Conservation biology for suites of species: Demographic modeling for Pacific island kingfishers: Biological Conservation, v. 136, no. 4, p. 520-530, https://doi.org/10.1016/j.biocon.2006.12.023.","startPage":"520","endPage":"530","numberOfPages":"11","costCenters":[{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true}],"links":[{"id":240310,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212772,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biocon.2006.12.023"}],"volume":"136","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f9dae4b0c8380cd4d803","contributors":{"authors":[{"text":"Kesler, D.C.","contributorId":96485,"corporation":false,"usgs":true,"family":"Kesler","given":"D.C.","affiliations":[],"preferred":false,"id":424221,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Haig, S. M. 0000-0002-6616-7589","orcid":"https://orcid.org/0000-0002-6616-7589","contributorId":55389,"corporation":false,"usgs":true,"family":"Haig","given":"S.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":424220,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029757,"text":"70029757 - 2007 - The CEOS constellation for land surface imaging","interactions":[],"lastModifiedDate":"2022-05-17T16:16:04.972609","indexId":"70029757","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"The CEOS constellation for land surface imaging","docAbstract":"A constellation of satellites that routinely and frequently images the Earth's land surface in consistently calibrated wavelengths from the visible through the microwave and in spatial detail that ranges from sub-meter to hundreds of meters would offer enormous potential benefits to society. A well-designed and effectively operated land surface imaging satellite constellation could have great positive impact not only on the quality of life for citizens of all nations, but also on mankind's very ability to sustain life as we know it on this planet long into the future. The primary objective of the Committee on Earth Observation Satellites (CEOS) Land Surface Imaging (LSI) Constellation is to define standards (or guidelines) that describe optimal future LSI Constellation capabilities, characteristics, and practices. Standards defined for a LSI Constellation will be based on a thorough understanding of user requirements, and they will address at least three fundamental areas of the systems comprising a Land Surface Imaging Constellation: the space segments, the ground segments, and relevant policies and plans. Studies conducted by the LSI Constellation Study Team also will address current and shorter-term problems and issues facing the land remote sensing community today, such as seeking ways to work more cooperatively in the operation of existing land surface imaging systems and helping to accomplish tangible benefits to society through application of land surface image data acquired by existing systems. 2007 LSI Constellation studies are designed to establish initial international agreements, develop preliminary standards for a mid-resolution land surface imaging constellation, and contribute data to a global forest assessment.","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Proceedings of SPIE - The International Society for Optical Engineering","largerWorkSubtype":{"id":12,"text":"Conference publication"},"conferenceTitle":"Sensors, Systems, and Next-Generation Satellites XI","conferenceDate":"Sep 17-20, 2007","conferenceLocation":"Florence, Italy","language":"English","publisher":"SPIE","doi":"10.1117/12.740854","usgsCitation":"Bailey, G., Berger, M., Jeanjean, H., and Gallo, K.P., 2007, The CEOS constellation for land surface imaging, <i>in</i> Proceedings of SPIE - The International Society for Optical Engineering, v. 6744, Florence, Italy, Sep 17-20, 2007, 674425, https://doi.org/10.1117/12.740854.","productDescription":"674425","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240171,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"6744","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505ba6b1e4b08c986b321243","contributors":{"authors":[{"text":"Bailey, G. B.","contributorId":105041,"corporation":false,"usgs":true,"family":"Bailey","given":"G. B.","affiliations":[],"preferred":false,"id":424148,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Berger, Marsha","contributorId":70603,"corporation":false,"usgs":true,"family":"Berger","given":"Marsha","affiliations":[],"preferred":false,"id":424145,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Jeanjean, H.","contributorId":77364,"corporation":false,"usgs":true,"family":"Jeanjean","given":"H.","email":"","affiliations":[],"preferred":false,"id":424146,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Gallo, K. P.","contributorId":86527,"corporation":false,"usgs":true,"family":"Gallo","given":"K.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":424147,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029756,"text":"70029756 - 2007 - Blooms of the toxic dinoflagellate Alexandrium fundyense in the western Gulf of Maine in 1993 and 1994: A comparative modeling study","interactions":[],"lastModifiedDate":"2012-03-12T17:21:08","indexId":"70029756","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1333,"text":"Continental Shelf Research","active":true,"publicationSubtype":{"id":10}},"title":"Blooms of the toxic dinoflagellate Alexandrium fundyense in the western Gulf of Maine in 1993 and 1994: A comparative modeling study","docAbstract":"Blooms of the toxic dinoflagellate Alexandrium fundyense commonly occur in the western Gulf of Maine but the amount of toxin observed in coastal shellfish is highly variable. In this study, a coupled physical-biological model is used to investigate the dynamics underlying the observed A. fundyense abundance and shellfish toxicity in 1993 (a high toxicity year) and 1994 (low toxicity year). The physical model simulates the spring circulation, while the biological model estimates the germination and population dynamics of A. fundyense based on laboratory and field data. The model captures the large-scale aspects of the initiation and development of A. fundyense blooms during both years, but small-scale patchiness and the dynamics of bloom termination remain problematic. In both cases, the germination of resting cysts accounts for the magnitude of A. fundyense populations early in the spring. Simulations with low net A. fundyense growth rates capture the mean observed concentration during the bloom peak, which is of similar magnitude during both years. There is little evidence that large-scale changes in biological dynamics between 1993 and 1994 were a primary driver of the differences in shellfish toxicity. Results instead suggest that the persistent southwesterly flow of the western Maine Coastal Current led to A. fundyense populations of similar alongshore extent by late May of both years. This period coincides with peak cell abundance in the region. Variations in wind forcing (downwelling favorable in 1993, upwelling favorable in 1994) and subsequent cell transport (inshore in 1993, offshore in 1994) in early June then provides a plausible explanation for the dramatic mid-June differences in shellfish toxicity throughout the western Gulf of Maine. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Continental Shelf Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.csr.2007.06.008","issn":"02784343","usgsCitation":"Stock, C., McGillicuddy, D., Anderson, D., Solow, A., and Signell, R.P., 2007, Blooms of the toxic dinoflagellate Alexandrium fundyense in the western Gulf of Maine in 1993 and 1994: A comparative modeling study: Continental Shelf Research, v. 27, no. 19, p. 2486-2512, https://doi.org/10.1016/j.csr.2007.06.008.","startPage":"2486","endPage":"2512","numberOfPages":"27","costCenters":[],"links":[{"id":212650,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.csr.2007.06.008"},{"id":240170,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"27","issue":"19","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f1ebe4b0c8380cd4aece","contributors":{"authors":[{"text":"Stock, C.A.","contributorId":32714,"corporation":false,"usgs":true,"family":"Stock","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":424143,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McGillicuddy, D.J. Jr.","contributorId":27655,"corporation":false,"usgs":true,"family":"McGillicuddy","given":"D.J.","suffix":"Jr.","affiliations":[],"preferred":false,"id":424141,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Anderson, D.M.","contributorId":32294,"corporation":false,"usgs":true,"family":"Anderson","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":424142,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Solow, A.R.","contributorId":9404,"corporation":false,"usgs":true,"family":"Solow","given":"A.R.","email":"","affiliations":[],"preferred":false,"id":424140,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Signell, R. P.","contributorId":89147,"corporation":false,"usgs":true,"family":"Signell","given":"R.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":424144,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029753,"text":"70029753 - 2007 - Habitat characteristics of adult frosted elfins (Callophrys irus) in sandplain communities of southeastern Massachusetts, USA","interactions":[],"lastModifiedDate":"2012-03-12T17:21:39","indexId":"70029753","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1015,"text":"Biological Conservation","active":true,"publicationSubtype":{"id":10}},"title":"Habitat characteristics of adult frosted elfins (Callophrys irus) in sandplain communities of southeastern Massachusetts, USA","docAbstract":"Changes to land use and disturbance frequency threaten disturbance-dependent Lepidoptera within sandplain habitats of the northeastern United States. The frosted elfin (Callophrys irus) is a rare and declining monophagous butterfly that is found in xeric open habitats maintained by disturbance. We surveyed potential habitat for adult frosted elfins at four sites containing frosted elfin populations in southeastern Massachusetts, United States. Based on the survey data, we used kernel density estimation to establish separate adult frosted elfin density classes, and then used regression tree analysis to describe the relationship between density and habitat features. Adult frosted elfin density was greatest when the host plant, wild indigo (Baptisia tinctoria), density was >2.6 plants/m2 and tree canopy cover was <29%. Frosted elfin density was inversely related to tree cover and declined when the density of wild indigo was <2.6 plants/m2 and shrub cover was ???16%. Even small quantities of non-native shrub cover negatively affected elfin densities. This effect was more pronounced when native herbaceous cover was <36%. Our results indicate that management for frosted elfins should aim to increase both wild indigo density and native herbaceous cover and limit native tree and shrub cover in open sandplain habitats. Elimination of non-native shrub cover is also recommended because of the negative effects of even low non-native shrub cover on frosted elfin densities. The maintenance of patches of early successional sandplain habitat with the combination of low tree and shrub cover, high host plant densities, and the absence of non-native shrubs appears essential for frosted elfin persistence, but may also be beneficial for a number of other rare sandplain insects and plant species. ?? 2006 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Biological Conservation","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.biocon.2006.10.055","issn":"00063207","usgsCitation":"Albanese, G., Vickery, P., and Sievert, P., 2007, Habitat characteristics of adult frosted elfins (Callophrys irus) in sandplain communities of southeastern Massachusetts, USA: Biological Conservation, v. 136, no. 1, p. 53-64, https://doi.org/10.1016/j.biocon.2006.10.055.","startPage":"53","endPage":"64","numberOfPages":"12","costCenters":[],"links":[{"id":240644,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213060,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.biocon.2006.10.055"}],"volume":"136","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a2f00e4b0c8380cd5c9e1","contributors":{"authors":[{"text":"Albanese, G.","contributorId":67722,"corporation":false,"usgs":true,"family":"Albanese","given":"G.","email":"","affiliations":[],"preferred":false,"id":424125,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vickery, P.D.","contributorId":45427,"corporation":false,"usgs":true,"family":"Vickery","given":"P.D.","affiliations":[],"preferred":false,"id":424124,"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":424126,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029742,"text":"70029742 - 2007 - Quantitative remote sensing study indicates doubling of coastal erosion rate in past 50 yr along a segment of the Arctic coast of Alaska","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029742","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Quantitative remote sensing study indicates doubling of coastal erosion rate in past 50 yr along a segment of the Arctic coast of Alaska","docAbstract":"A new quantitative coastal land gained-and-lost method uses image analysis of topographic maps and Landsat thematic mapper short-wave infrared data to document accelerated coastal land loss and thermokarst lake expansion and drainage. The data span 1955-2005 along the Beaufort Sea coast north of Teshekpuk Lake in the National Petroleum Reserve in Alaska. Some areas have undergone as much as 0.9 km of coastal erosion in the past 50 yr. Land loss attributed to coastal erosion more than doubled, from 0.48 km2 yr-1 during 1955-1985 to 1.08 km2 yr-1 during 1985-2005. Coastal erosion has breached thermokarst lakes, causing initial draining of the lakes followed by marine floodng. Although inland thermokarst lakes show some uniform expansion, lakes breached by coastal erosion display lake expansion several orders of magnitude greater than inland lakes. ?? 2007 The Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G23672A.1","issn":"00917613","usgsCitation":"Mars, J., and Houseknecht, D., 2007, Quantitative remote sensing study indicates doubling of coastal erosion rate in past 50 yr along a segment of the Arctic coast of Alaska: Geology, v. 35, no. 7, p. 583-586, https://doi.org/10.1130/G23672A.1.","startPage":"583","endPage":"586","numberOfPages":"4","costCenters":[],"links":[{"id":212917,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G23672A.1"},{"id":240482,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"35","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a922fe4b0c8380cd806f4","contributors":{"authors":[{"text":"Mars, J.C.","contributorId":74833,"corporation":false,"usgs":true,"family":"Mars","given":"J.C.","affiliations":[],"preferred":false,"id":424090,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Houseknecht, D.W. 0000-0002-9633-6910","orcid":"https://orcid.org/0000-0002-9633-6910","contributorId":33695,"corporation":false,"usgs":true,"family":"Houseknecht","given":"D.W.","affiliations":[],"preferred":false,"id":424089,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029739,"text":"70029739 - 2007 - ASAR images a diverse set of deformation patterns at Kilauea volcano, Hawai'i","interactions":[],"lastModifiedDate":"2019-11-12T06:52:25","indexId":"70029739","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"ASAR images a diverse set of deformation patterns at Kilauea volcano, Hawai'i","docAbstract":"<p>Since 2003, 27 independent look angles have been acquired by ENVISAT&rsquo;s Advanced Synthetic Aperture Radar (ASAR) instrument over the island of Hawai`i, allowing for the formation of thousands of interferograms showing deformation of the ground surface. On Kīlauea volcano, a transition from minor to broad-scale summit inflation was observed by interferograms that span 2003 to 2006. In addition, radar interferometry (InSAR) observations of Kīlauea led to the discovery of several previously unknown areas of localized subsidence in the caldera and along the volcano&rsquo;s east rift zone. These features are probably caused by the cooling and contraction of accumulated lavas. After November 2005, a surface instability near the point that lava entered the ocean on the south flank of Kīlauea was observed in interferograms. The motion is most likely a result of unbuttressing of a portion of the coast following the collapse of a large lava delta in November 2005. InSAR data can also be used to map lava flow development over time, providing ~30 m spatial resolution maps at approximately monthly intervals. Future applications of InSAR to Kīlauea will probably result in more discoveries and insights, both as the style of volcano deformation changes and as data from new instruments are acquired.</p>","conferenceTitle":"Envisat Symposium 2007","conferenceDate":"April 23-27, 2007","conferenceLocation":"Montreux, Switzerland ","language":"English","issn":"03796566","usgsCitation":"Poland, M.P., 2007, ASAR images a diverse set of deformation patterns at Kilauea volcano, Hawai'i, Envisat Symposium 2007, no. SP-636, Montreux, Switzerland , April 23-27, 2007, 6 p.","productDescription":"6 p.","numberOfPages":"6","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":336,"text":"Hawaiian Volcano Observatory","active":false,"usgs":true}],"links":[{"id":240448,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Hawaii","otherGeospatial":"Kilauea 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 \"}}]}","issue":"SP-636","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e636e4b0c8380cd47258","contributors":{"authors":[{"text":"Poland, Michael P. 0000-0001-5240-6123 mpoland@usgs.gov","orcid":"https://orcid.org/0000-0001-5240-6123","contributorId":146118,"corporation":false,"usgs":true,"family":"Poland","given":"Michael","email":"mpoland@usgs.gov","middleInitial":"P.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":424079,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70029736,"text":"70029736 - 2007 - The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029736","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2033,"text":"International Journal of Coal Geology","active":true,"publicationSubtype":{"id":10}},"title":"The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types","docAbstract":"The vitrinite reflectance suppression literature shows that while bitumen impregnation of the vitrinite group is often invoked as a significant contributor to suppression, its existence is not often supported by petrological evidence. This study examines bitumen impregnation as a factor in vitrinite suppression by comparing the vitrinite reflectance of source rock and coal samples before and after solvent-extraction. Bitumen, often defined as organic matter soluble or extractable in certain organic solvents, should be removed by Soxhlet method solvent extraction using chloroform. Removing the extractable bitumen should restore the suppressed reflectance to its true higher value. However, the solvent extracted samples averaged 0.014% Rv less than that of the unextracted samples. We conclude from these results and from other published data that reflectance suppression by bitumen impregnation in the vitrinite maceral group, above the huminite stage of gelification, is seemingly a rare phenomenon and whose effect on suppressing vitrinite reflectance is typically negligible. ?? 2006.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Coal Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.coal.2006.03.005","issn":"01665162","usgsCitation":"Barker, C., Lewan, M.D., and Pawlewicz, M., 2007, The influence of extractable organic matter on vitrinite reflectance suppression: A survey of kerogen and coal types: International Journal of Coal Geology, v. 70, no. 1-3 SPEC. ISS., p. 67-78, https://doi.org/10.1016/j.coal.2006.03.005.","startPage":"67","endPage":"78","numberOfPages":"12","costCenters":[],"links":[{"id":212859,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.coal.2006.03.005"},{"id":240416,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"70","issue":"1-3 SPEC. ISS.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bad1fe4b08c986b3239ba","contributors":{"authors":[{"text":"Barker, C.E.","contributorId":69991,"corporation":false,"usgs":true,"family":"Barker","given":"C.E.","affiliations":[],"preferred":false,"id":424058,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lewan, M. D.","contributorId":46540,"corporation":false,"usgs":true,"family":"Lewan","given":"M.","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":424057,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pawlewicz, M. J.","contributorId":75111,"corporation":false,"usgs":true,"family":"Pawlewicz","given":"M. J.","affiliations":[],"preferred":false,"id":424059,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029735,"text":"70029735 - 2007 - Late Quaternary stratigraphy and luminescence geochronology of the northeastern Mojave Desert","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029735","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3217,"text":"Quaternary International","active":true,"publicationSubtype":{"id":10}},"title":"Late Quaternary stratigraphy and luminescence geochronology of the northeastern Mojave Desert","docAbstract":"The chronology of the Holocene and late Pleistocene deposits of the northeastern Mojave Desert have been largely obtained using radiocarbon ages. Our study refines and extends this framework using optically stimulated luminescence (OSL) to date deposits from Valjean Valley, Silurian Lake Playa, Red Pass, and California Valley. Of particular interest are eolian fine silts incorporated in ground-water discharge (GWD) deposits bracketed at 185-140 and 20-50 ka. Alluvial fan deposits proved amenable for OSL by dating both eolian sand lenses and reworked eolian sand in a matrix of gravel that occurs within the fan stratigraphy. Lacustrine sand in spits and bars also yielded acceptable OSL ages. These OSL ages fill gaps in the geochronology of desert deposits, which can provide data relevant to understanding the responses of several depositional systems to regional changes in climate. This study identifies the most promising deposits for future luminescence dating and suggests that for several regions of the Mojave Desert, sediments from previously undated landforms can be more accurately placed within correct geologic map units.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.quaint.2006.12.010","issn":"10406182","usgsCitation":"Mahan, S., Miller, D., Menges, C., and Yount, J.C., 2007, Late Quaternary stratigraphy and luminescence geochronology of the northeastern Mojave Desert: Quaternary International, v. 166, no. 1, p. 61-78, https://doi.org/10.1016/j.quaint.2006.12.010.","startPage":"61","endPage":"78","numberOfPages":"18","costCenters":[],"links":[{"id":212858,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quaint.2006.12.010"},{"id":240415,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"166","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4538e4b0c8380cd6712f","contributors":{"authors":[{"text":"Mahan, S. A. 0000-0001-5214-7774","orcid":"https://orcid.org/0000-0001-5214-7774","contributorId":94333,"corporation":false,"usgs":true,"family":"Mahan","given":"S. A.","affiliations":[],"preferred":false,"id":424055,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, D. M. 0000-0003-3711-0441","orcid":"https://orcid.org/0000-0003-3711-0441","contributorId":104422,"corporation":false,"usgs":true,"family":"Miller","given":"D. M.","affiliations":[],"preferred":false,"id":424056,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Menges, C.M.","contributorId":71200,"corporation":false,"usgs":false,"family":"Menges","given":"C.M.","affiliations":[],"preferred":false,"id":424054,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yount, J. C.","contributorId":69553,"corporation":false,"usgs":true,"family":"Yount","given":"J.","middleInitial":"C.","affiliations":[],"preferred":false,"id":424053,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029734,"text":"70029734 - 2007 - A simple daily soil-water balance model for estimating the spatial and temporal distribution of groundwater recharge in temperate humid areas","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029734","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1923,"text":"Hydrogeology Journal","active":true,"publicationSubtype":{"id":10}},"title":"A simple daily soil-water balance model for estimating the spatial and temporal distribution of groundwater recharge in temperate humid areas","docAbstract":"Quantifying the spatial and temporal distribution of natural groundwater recharge is usually a prerequisite for effective groundwater modeling and management. As flow models become increasingly utilized for management decisions, there is an increased need for simple, practical methods to delineate recharge zones and quantify recharge rates. Existing models for estimating recharge distributions are data intensive, require extensive parameterization, and take a significant investment of time in order to establish. The Wisconsin Geological and Natural History Survey (WGNHS) has developed a simple daily soil-water balance (SWB) model that uses readily available soil, land cover, topographic, and climatic data in conjunction with a geographic information system (GIS) to estimate the temporal and spatial distribution of groundwater recharge at the watershed scale for temperate humid areas. To demonstrate the methodology and the applicability and performance of the model, two case studies are presented: one for the forested Trout Lake watershed of north central Wisconsin, USA and the other for the urban-agricultural Pheasant Branch Creek watershed of south central Wisconsin, USA. Overall, the SWB model performs well and presents modelers and planners with a practical tool for providing recharge estimates for modeling and water resource planning purposes in humid areas. ?? Springer-Verlag 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Hydrogeology Journal","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10040-007-0160-6","issn":"14312174","usgsCitation":"Dripps, W.R., and Bradbury, K.R., 2007, A simple daily soil-water balance model for estimating the spatial and temporal distribution of groundwater recharge in temperate humid areas: Hydrogeology Journal, v. 15, no. 3, p. 433-444, https://doi.org/10.1007/s10040-007-0160-6.","startPage":"433","endPage":"444","numberOfPages":"12","costCenters":[],"links":[{"id":212832,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10040-007-0160-6"},{"id":240380,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"15","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-02-16","publicationStatus":"PW","scienceBaseUri":"5059e58de4b0c8380cd46e06","contributors":{"authors":[{"text":"Dripps, W. R.","contributorId":27978,"corporation":false,"usgs":true,"family":"Dripps","given":"W.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":424051,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradbury, K. R.","contributorId":86070,"corporation":false,"usgs":true,"family":"Bradbury","given":"K.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":424052,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029731,"text":"70029731 - 2007 - Bedrock aquifers and population growth in the Denver Basin, Colorado, USA","interactions":[],"lastModifiedDate":"2018-04-10T11:05:50","indexId":"70029731","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1582,"text":"Episodes","active":true,"publicationSubtype":{"id":10}},"title":"Bedrock aquifers and population growth in the Denver Basin, Colorado, USA","docAbstract":"The Denver Basin bedrock aquifer system consists of Tertiary and Cretaceous age sedimentary rocks known as the Dawson, Denver, Arapahoe and Laramie-Fox Hills aquifers. The number of bedrock wells has increased from 12,000 in 1985 to over 33,700 in 2001 and the withdrawal of groundwater has caused water level declines in excess of 75 meters. Water level declines now range from 3 to 12 meters per year in the critical Arapahoe Aquifer. The groundwater supplies were once thought to be sufficient for 100 years but there is concern that they may be depleted in 10 to 15 years in areas on the west side of the basin. Groundwater is being mined from the aquifer system because the withdrawal through wells exceeds the rate of recharge. Increased groundwater withdrawal will cause further water level declines, increased costs to pump groundwater, and reduced yield from existing wells. In the Denver Basin, hydrologists have some capability to monitor declines in water levels for the Arapaho Aquifer, but generally have a limited ability to monitor water use. More complete and accurate water use data are needed to predict groundwater longevity for the Arapahoe Aquifer. The life of the Arapahoe Aquifer can be extended with artificial recharge using imported surface water, water reuse, restrictions on lawn watering, well permit restrictions and other conservation measures. Availability of groundwater may limit growth in the Denver Basin over the next 20 years unless residents are willing to pay for additional new sources of supply.","language":"English","publisher":"International Union of Geological Sciences","issn":"07053797","usgsCitation":"Moore, J., Raynolds, R., and Dechesne, M., 2007, Bedrock aquifers and population growth in the Denver Basin, Colorado, USA: Episodes, v. 30, no. 2, p. 115-118.","productDescription":"4 p.","startPage":"115","endPage":"118","numberOfPages":"4","costCenters":[],"links":[{"id":240343,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":265825,"type":{"id":15,"text":"Index Page"},"url":"https://www.episodes.org/journalArchive.do"}],"volume":"30","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f048e4b0c8380cd4a6bf","contributors":{"authors":[{"text":"Moore, J.E.","contributorId":34927,"corporation":false,"usgs":true,"family":"Moore","given":"J.E.","email":"","affiliations":[],"preferred":false,"id":424040,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Raynolds, R.G.","contributorId":39006,"corporation":false,"usgs":true,"family":"Raynolds","given":"R.G.","email":"","affiliations":[],"preferred":false,"id":424041,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dechesne, M.","contributorId":72207,"corporation":false,"usgs":true,"family":"Dechesne","given":"M.","affiliations":[],"preferred":false,"id":424042,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029729,"text":"70029729 - 2007 - Understanding shallow gas occurrences in the Gulf of Lions","interactions":[],"lastModifiedDate":"2023-08-08T11:11:14.774827","indexId":"70029729","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1742,"text":"Geo-Marine Letters","active":true,"publicationSubtype":{"id":10}},"title":"Understanding shallow gas occurrences in the Gulf of Lions","docAbstract":"<div id=\"Abs1-section\" class=\"c-article-section\"><div id=\"Abs1-content\" class=\"c-article-section__content\"><p>New coring data have been acquired along the western Gulf of Lions showing anomalous concentrations of methane (up to 95,700&nbsp;ppm) off the Rhône prodelta and the head of the southern canyons Lacaze-Duthiers and Cap de Creus. Sediment cores were acquired with box and kasten cores during 2004–2005 on several EuroSTRATAFORM cruises. Anomalous methane concentrations are discussed and integrated with organic carbon data. Sampled sites include locations where previous surveys identified acoustic anomalies in high-resolution seismic profiles, which may be related to the presence of gas. Interpretation of the collected data has enabled us to discuss the nature of shallow gas along the Gulf of Lions, and its association with recent sedimentary dynamics. The Rhône prodelta flood deposits deliver significant amounts of terrigenous organic matter that can be rapidly buried, effectively removing this organic matter from aerobic oxidation and biological uptake, and leading to the potential for methanogenesis with burial. Away from the flood-related sediments off the Rhône delta, the organic matter is being reworked and remineralized on its way along the western coast of the Gulf of Lions, with the result that the recent deposits in the canyon contain little reactive carbon. In the southernmost canyons, Lacaze-Duthiers and Cap de Creus, the gas analyses show relatively little shallow gas in the core samples. Samples with anomalous gas (up to 5,000&nbsp;ppm methane) are limited to local areas where the samples also show higher amounts of organic matter. The anomalous samples at the head of the southern canyons may be related to methanogenesis of recent drape or of older sidewall canyon infills.</p></div></div>","language":"English","publisher":"Springer","doi":"10.1007/s00367-007-0067-1","issn":"02760460","usgsCitation":"Garcia-Garcia, A., Tesi, T., Orange, D.L., Lorenson, T., Miserocchi, S., Langone, L., Herbert, I., and Dougherty, J., 2007, Understanding shallow gas occurrences in the Gulf of Lions: Geo-Marine Letters, v. 27, no. 2-4, p. 143-154, https://doi.org/10.1007/s00367-007-0067-1.","productDescription":"12 p.","startPage":"143","endPage":"154","numberOfPages":"12","costCenters":[],"links":[{"id":477054,"rank":2,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://www.escholarship.org/uc/item/1vr496z7","text":"External Repository"},{"id":240308,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"France","otherGeospatial":"Gulf of Lions","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              2.4367024604958942,\n              44.578455566789245\n            ],\n            [\n              2.4367024604958942,\n              41.001917634327384\n            ],\n            [\n              6.983091663240373,\n              41.001917634327384\n            ],\n            [\n              6.983091663240373,\n              44.578455566789245\n            ],\n            [\n              2.4367024604958942,\n              44.578455566789245\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"27","issue":"2-4","noUsgsAuthors":false,"publicationDate":"2007-05-05","publicationStatus":"PW","scienceBaseUri":"505bbc59e4b08c986b328b99","contributors":{"authors":[{"text":"Garcia-Garcia, Ana","contributorId":43958,"corporation":false,"usgs":true,"family":"Garcia-Garcia","given":"Ana","email":"","affiliations":[],"preferred":false,"id":424033,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tesi, Tommaso","contributorId":106687,"corporation":false,"usgs":true,"family":"Tesi","given":"Tommaso","email":"","affiliations":[],"preferred":false,"id":424036,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Orange, Daniel L.","contributorId":23309,"corporation":false,"usgs":true,"family":"Orange","given":"Daniel","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":424031,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Lorenson, T.","contributorId":88915,"corporation":false,"usgs":true,"family":"Lorenson","given":"T.","email":"","affiliations":[],"preferred":false,"id":424035,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Miserocchi, Stefano","contributorId":68949,"corporation":false,"usgs":true,"family":"Miserocchi","given":"Stefano","email":"","affiliations":[],"preferred":false,"id":424034,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Langone, L.","contributorId":43573,"corporation":false,"usgs":true,"family":"Langone","given":"L.","email":"","affiliations":[],"preferred":false,"id":424032,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Herbert, I.","contributorId":14200,"corporation":false,"usgs":true,"family":"Herbert","given":"I.","email":"","affiliations":[],"preferred":false,"id":424030,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Dougherty, J.","contributorId":108296,"corporation":false,"usgs":true,"family":"Dougherty","given":"J.","email":"","affiliations":[],"preferred":false,"id":424037,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70029719,"text":"70029719 - 2007 - Shoreline change as a proxy for subaerial beach volume change","interactions":[],"lastModifiedDate":"2018-04-09T12:36:18","indexId":"70029719","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2220,"text":"Journal of Coastal Research","active":true,"publicationSubtype":{"id":10}},"title":"Shoreline change as a proxy for subaerial beach volume change","docAbstract":"<p>It is difficult and expensive to calculate changes in sediment volume for large sections of sandy beaches. Shoreline change could be a useful proxy for volume change because it can be collected quickly and relatively easily over long distances. In this paper, we summarize several studies that find a high correlation between shoreline change and subaerial volume change. We also examine three new data sets. On Cape Cod, Massachusetts, the correlation coefficients between the time series of shoreline change and subaerial volume change at two locations are 0.73 and 0.96. On Assateague Island, the correlation coefficient between along-coast variations in shoreline change and subaerial volume change is 0.71. On the Outer Banks of North Carolina, the average correlation coefficient between temporal variations in shoreline change and subaerial volume change is 0.84. For spatial variations, the average correlation coefficient is 0.88. It is therefore concluded that shoreline change is a useful proxy for subaerial volume change.</p>","language":"English","publisher":"Coastal Education and Research Foundation","doi":"10.2112/05-0442.1","issn":"07490208","usgsCitation":"Farris, A., and List, J., 2007, Shoreline change as a proxy for subaerial beach volume change: Journal of Coastal Research, v. 23, no. 3, p. 740-748, https://doi.org/10.2112/05-0442.1.","productDescription":"9 p.","startPage":"740","endPage":"748","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":477100,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.2112/05-0442.1","text":"Publisher Index Page"},{"id":240168,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Massachusetts, Maryland, North Carolina, Virginia","city":"Cape Cod","otherGeospatial":"Assateague Island, Outer Banks","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -76.5,35.75 ], [ -76.5,42.083333 ], [ -69.833333,42.083333 ], [ -69.833333,35.75 ], [ -76.5,35.75 ] ] ] } } ] }","volume":"23","issue":"3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b8e91e4b08c986b3189f1","contributors":{"authors":[{"text":"Farris, Amy S.","contributorId":28075,"corporation":false,"usgs":true,"family":"Farris","given":"Amy S.","affiliations":[],"preferred":false,"id":423992,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"List, Jeffrey H. jlist@usgs.gov","contributorId":2416,"corporation":false,"usgs":true,"family":"List","given":"Jeffrey H.","email":"jlist@usgs.gov","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":false,"id":423991,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
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