{"pageNumber":"2367","pageRowStart":"59150","pageSize":"25","recordCount":184617,"records":[{"id":70031173,"text":"70031173 - 2007 - Selection of den sites by black bears in the southern Appalachians","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031173","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2373,"text":"Journal of Mammalogy","onlineIssn":"1545-1542","printIssn":"0022-2372","active":true,"publicationSubtype":{"id":10}},"title":"Selection of den sites by black bears in the southern Appalachians","docAbstract":"We evaluated selection of den sites by American black bears (Ursus americanus) in the Pisgah Bear Sanctuary, western North Carolina, by comparing characteristics of dens at 53 den sites with availability of habitat characteristics in annual home ranges of bears and in the study area. We also tested whether den-site selection differed by sex, age, and reproductive status of bears. In addition, we evaluated whether the den component of an existing habitat model for black bears predicted where bears would select den sites. We found bears selected den sites far from gravel roads, on steep slopes, and at high elevations relative to what was available in both annual home ranges and in the study area. Den-site selection did not differ by sex or age, but it differed by reproductive status. Adult females with cubs preferred to den in areas that were relatively far from gravel roads, but adult females without cubs did not. The habitat model overestimated the value of areas near gravel roads, underestimated the value of moderately steep areas, and did not include elevation as a predictor variable. Our results highlight the importance of evaluating den selection in terms of both use and availability of den characteristics. ?? 2007 American Society of Mammalogists.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Mammalogy","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1644/06-MAMM-A-329R1.1","issn":"00222372","usgsCitation":"Reynolds-Hogland, M.J., Mitchell, M., Powell, R.A., and Brown, D., 2007, Selection of den sites by black bears in the southern Appalachians: Journal of Mammalogy, v. 88, no. 4, p. 1062-1073, https://doi.org/10.1644/06-MAMM-A-329R1.1.","startPage":"1062","endPage":"1073","numberOfPages":"12","costCenters":[],"links":[{"id":211461,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1644/06-MAMM-A-329R1.1"},{"id":238753,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"88","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-08-20","publicationStatus":"PW","scienceBaseUri":"505b8ccee4b08c986b318135","contributors":{"authors":[{"text":"Reynolds-Hogland, M. J.","contributorId":57647,"corporation":false,"usgs":true,"family":"Reynolds-Hogland","given":"M.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":430360,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mitchell, M.S.","contributorId":26724,"corporation":false,"usgs":true,"family":"Mitchell","given":"M.S.","email":"","affiliations":[],"preferred":false,"id":430358,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Powell, R. A.","contributorId":41789,"corporation":false,"usgs":true,"family":"Powell","given":"R.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430359,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brown, D.C.","contributorId":70995,"corporation":false,"usgs":true,"family":"Brown","given":"D.C.","email":"","affiliations":[],"preferred":false,"id":430361,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031174,"text":"70031174 - 2007 - Pesticide and transformation product detections and age-dating relations from till and sand deposits","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031174","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Pesticide and transformation product detections and age-dating relations from till and sand deposits","docAbstract":"Pesticide and transformation product concentrations and frequencies in ground water from areas of similar crop and pesticide applications may vary substantially with differing lithologies. Pesticide analysis data for atrazine, metolachlor, alachlor, acetochlor, and cyanazine and their pesticide transformation products were collected at 69 monitoring wells in Illinois and northern Indiana to document occurrence of pesticides and their transformation products in two agricultural areas of differing lithologies, till, and sand. The till is primarily tile drained and has preferential fractured flow, whereas the sand primarily has surface water drainage and primary porosity flow. Transformation products represent most of the agricultural pesticides in ground water regardless of aquifer material - till or sand. Transformation products were detected more frequently than parent pesticides in both the till and sand, with metolachlor ethane sulfonic acid being most frequently detected. Estimated ground-water recharge dates for the sand were based on chlorofluorocarbon analyses. These age-dating data indicate that ground water recharged prior to 1990 is more likely to have a detection of a pesticide or pesticide transformation product. Detections were twice as frequent in ground water recharged prior to 1990 (82%) than in ground water recharged on or after 1990 (33%). The highest concentrations of atrazine, alachlor, metolachlor, and their transformation products, also were detected in samples from ground water recharged prior to 1990. These age/pesticide detection relations are opposite of what would normally be expected, and may be the result of preferential flow and/or ground-water mixing between aquifers and aquitards as evident by the detection of acetochlor transformation products in samples with estimated ground-water ages predating initial pesticide application. ?? 2007 American Water Resources Association.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of the American Water Resources Association","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1752-1688.2007.00067.x","issn":"1093474X","usgsCitation":"Warner, K., and Morrow, W., 2007, Pesticide and transformation product detections and age-dating relations from till and sand deposits: Journal of the American Water Resources Association, v. 43, no. 4, p. 911-922, https://doi.org/10.1111/j.1752-1688.2007.00067.x.","startPage":"911","endPage":"922","numberOfPages":"12","costCenters":[],"links":[{"id":211489,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1752-1688.2007.00067.x"},{"id":238785,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"4","noUsgsAuthors":false,"publicationDate":"2007-06-28","publicationStatus":"PW","scienceBaseUri":"505a7712e4b0c8380cd78403","contributors":{"authors":[{"text":"Warner, K.L.","contributorId":73781,"corporation":false,"usgs":true,"family":"Warner","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":430362,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Morrow, W.S.","contributorId":106309,"corporation":false,"usgs":true,"family":"Morrow","given":"W.S.","email":"","affiliations":[],"preferred":false,"id":430363,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032955,"text":"70032955 - 2007 - Seasonal variations on the residence times and partitioning of short-lived radionuclides (<sup>234</sup>Th, <sup>7</sup>Be and <sup>210</sup>Pb) and depositional fluxes of <sup>7</sup>Be and <sup>210</sup>Pb in Tampa Bay, Florida","interactions":[],"lastModifiedDate":"2014-08-20T14:42:43","indexId":"70032955","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Seasonal variations on the residence times and partitioning of short-lived radionuclides (<sup>234</sup>Th, <sup>7</sup>Be and <sup>210</sup>Pb) and depositional fluxes of <sup>7</sup>Be and <sup>210</sup>Pb in Tampa Bay, Florida","docAbstract":"<p>Historically, Tampa Bay has been impacted heavily by a wide range of anthropogenic perturbations that may include, agricultural-, shipping-, phosphate mining/distribution-related activities, as well as a burgeoning coastal population. Due to the presence of U-rich underlying sediments, elevated activities of U- and Th-series daughter products may be naturally released into this system. This region is also known for summer thunderstorms and corresponding increases in precipitation and surface water runoff. Only limited work has been conducted on the partitioning of particle-reactive radionuclides (such as <sup>7</sup>Be, <sup>210</sup>Pb, and <sup>234</sup>Th) in such a dynamic coastal system. We investigated both the removal residence time and partitioning of these radionuclides between filter-retained particulate matter (≥ 0.5 μm) and the filtrate (< 0.5 μm) phase during late spring (June 2003) and mid summer (August 2003) in the water column of Tampa Bay.</p>\n<br>\n<p>Our results indicate that the partitioning of <sup>7</sup>Be, <sup>210</sup>Pb, and <sup>234</sup>Th between filtrate and filter-retained phase is controlled foremost by enhanced bottom resuspension events during summer thunderstorms. As a consequence, no significant relationship exists between the distribution coefficients (Kd values) of these isotopes and the concentration of suspended particulate matter (SPM). Relatively faster recycling rates of atmospheric water vapor derived from the ocean results in lower atmospheric depositional fluxes of <sup>210</sup>Pb to the study site than predicted. The relationship between <sup>7</sup>Be and <sup>210</sup>Pb in bulk (wet + dry) deposition is compared to their respective water column activities. The residence times of particulate and dissolved <sup>234</sup>Th, <sup>7</sup>Be and <sup>210</sup>Pb, as well the distribution coefficients of these radionuclides, are then compared to values reported in other coastal systems.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.marchem.2006.06.012","issn":"03044203","usgsCitation":"Baskaran, M., and Swarzenski, P., 2007, Seasonal variations on the residence times and partitioning of short-lived radionuclides (<sup>234</sup>Th, <sup>7</sup>Be and <sup>210</sup>Pb) and depositional fluxes of <sup>7</sup>Be and <sup>210</sup>Pb in Tampa Bay, Florida: Marine Chemistry, v. 104, no. 1-2, p. 27-42, https://doi.org/10.1016/j.marchem.2006.06.012.","productDescription":"16 p.","startPage":"27","endPage":"42","numberOfPages":"16","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":213205,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marchem.2006.06.012"},{"id":240808,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -82.7,27.6 ], [ -82.7,28.0 ], [ -82.4,28.0 ], [ -82.4,27.6 ], [ -82.7,27.6 ] ] ] } } ] }","volume":"104","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b88f5e4b08c986b316c64","contributors":{"authors":[{"text":"Baskaran, M.","contributorId":96627,"corporation":false,"usgs":true,"family":"Baskaran","given":"M.","affiliations":[],"preferred":false,"id":438690,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Swarzenski, P.W. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":29487,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.W.","affiliations":[],"preferred":false,"id":438689,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032956,"text":"70032956 - 2007 - Plumbing the global carbon cycle: Integrating inland waters into the terrestrial carbon budget","interactions":[],"lastModifiedDate":"2018-01-30T19:37:04","indexId":"70032956","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1478,"text":"Ecosystems","active":true,"publicationSubtype":{"id":10}},"title":"Plumbing the global carbon cycle: Integrating inland waters into the terrestrial carbon budget","docAbstract":"Because freshwater covers such a small fraction of the Earth's surface area, inland freshwater ecosystems (particularly lakes, rivers, and reservoirs) have rarely been considered as potentially important quantitative components of the carbon cycle at either global or regional scales. By taking published estimates of gas exchange, sediment accumulation, and carbon transport for a variety of aquatic systems, we have constructed a budget for the role of inland water ecosystems in the global carbon cycle. Our analysis conservatively estimates that inland waters annually receive, from a combination of background and anthropogenically altered sources, on the order of 1.9 Pg C y-1 from the terrestrial landscape, of which about 0.2 is buried in aquatic sediments, at least 0.8 (possibly much more) is returned to the atmosphere as gas exchange while the remaining 0.9 Pg y-1 is delivered to the oceans, roughly equally as inorganic and organic carbon. Thus, roughly twice as much C enters inland aquatic systems from land as is exported from land to the sea. Over prolonged time net carbon fluxes in aquatic systems tend to be greater per unit area than in much of the surrounding land. Although their area is small, these freshwater aquatic systems can affect regional C balances. Further, the inclusion of inland, freshwater ecosystems provides useful insight about the storage, oxidation and transport of terrestrial C, and may warrant a revision of how the modern net C sink on land is described. ?? 2007 Springer Science+Business Media, LLC.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecosystems","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10021-006-9013-8","issn":"14329840","usgsCitation":"Cole, J.J., Prairie, Y., Caraco, N., McDowell, W.H., Tranvik, L., Striegl, R.G., Duarte, C., Kortelainen, P., Downing, J.A., Middelburg, J.J., and Melack, J., 2007, Plumbing the global carbon cycle: Integrating inland waters into the terrestrial carbon budget: Ecosystems, v. 10, no. 1, p. 171-184, https://doi.org/10.1007/s10021-006-9013-8.","startPage":"171","endPage":"184","numberOfPages":"14","costCenters":[],"links":[{"id":477031,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.177.3527","text":"External Repository"},{"id":240839,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213234,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10021-006-9013-8"}],"volume":"10","issue":"1","noUsgsAuthors":false,"publicationDate":"2007-02-13","publicationStatus":"PW","scienceBaseUri":"505a7c91e4b0c8380cd79a62","contributors":{"authors":[{"text":"Cole, J. J.","contributorId":25746,"corporation":false,"usgs":false,"family":"Cole","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":438691,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prairie, Y.T.","contributorId":72191,"corporation":false,"usgs":true,"family":"Prairie","given":"Y.T.","email":"","affiliations":[],"preferred":false,"id":438697,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Caraco, N.F.","contributorId":47150,"corporation":false,"usgs":true,"family":"Caraco","given":"N.F.","email":"","affiliations":[],"preferred":false,"id":438694,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McDowell, W. H.","contributorId":88532,"corporation":false,"usgs":false,"family":"McDowell","given":"W.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":438699,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tranvik, L.J.","contributorId":82912,"corporation":false,"usgs":true,"family":"Tranvik","given":"L.J.","affiliations":[],"preferred":false,"id":438698,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Striegl, Robert G. 0000-0002-8251-4659 rstriegl@usgs.gov","orcid":"https://orcid.org/0000-0002-8251-4659","contributorId":1630,"corporation":false,"usgs":true,"family":"Striegl","given":"Robert","email":"rstriegl@usgs.gov","middleInitial":"G.","affiliations":[{"id":200,"text":"Coop Res Unit Seattle","active":true,"usgs":true},{"id":36183,"text":"Hydro-Ecological Interactions Branch","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":false,"id":438696,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Duarte, C.M.","contributorId":64017,"corporation":false,"usgs":true,"family":"Duarte","given":"C.M.","affiliations":[],"preferred":false,"id":438695,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Kortelainen, Pirkko","contributorId":43130,"corporation":false,"usgs":true,"family":"Kortelainen","given":"Pirkko","email":"","affiliations":[],"preferred":false,"id":438693,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Downing, J. A.","contributorId":100466,"corporation":false,"usgs":true,"family":"Downing","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":438700,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Middelburg, J. J.","contributorId":105417,"corporation":false,"usgs":true,"family":"Middelburg","given":"J.","middleInitial":"J.","affiliations":[],"preferred":false,"id":438701,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Melack, J.","contributorId":35453,"corporation":false,"usgs":true,"family":"Melack","given":"J.","email":"","affiliations":[],"preferred":false,"id":438692,"contributorType":{"id":1,"text":"Authors"},"rank":11}]}}
,{"id":70032764,"text":"70032764 - 2007 - Distribution, habitat, size, and color pattern of Cnemidophorus lemniscatus (Sauria: Teiidae) on Cayo Cochino Pequeño, Honduras","interactions":[],"lastModifiedDate":"2015-04-06T13:15:32","indexId":"70032764","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3451,"text":"Southwestern Naturalist","active":true,"publicationSubtype":{"id":10}},"title":"Distribution, habitat, size, and color pattern of Cnemidophorus lemniscatus (Sauria: Teiidae) on Cayo Cochino Pequeño, Honduras","docAbstract":"<p><span>Cayo Cochino Peque&ntilde;o is a 0.64-km</span><sup>2</sup><span>&nbsp;Caribbean island in the Cayos Cochinos archipelago, Department of Islas de la Bah&iacute;a, Honduras. One published report noted the presence of the rainbow whiptail (</span><i>Cnemidophorus lemniscatus</i><span>) on Cayo Cochino Peque&ntilde;o, but nothing is known about the biology of this insular population. During a part of the dry season in July and August 2004, we used drift fences, pitfall traps, and separate observational transects to elucidate the distribution and habitat use of&nbsp;</span><i>C. lemniscatus</i><span>&nbsp;on the island. The only population of this species was located in a narrow coastal zone (width to 60 m and length to 450 m) on the southern half of the eastern windward side of the island. We analyzed the percentage of the canopy cover and the percentage of 4 ground coverage types along 2 transects 200 m long in this area to understand the basis of the suitability of the habitat for&nbsp;</span><i>C. lemniscatus</i><span>. Descriptively, the area harboring this species on Cayo Cochino Peque&ntilde;o consisted of the remnants of a coconut palm grove with low-lying herbaceous vegetation and grasses, in which a mosaic of small, open areas of sandy soil and coral fragments, with or without accumulations of debris, were the foci of lizard activities. Also observed in this habitat were 2 individuals of the brown racer (</span><i>Dryadophis melanolomus</i><span>), an actively foraging snake and likely predator on&nbsp;</span><i>C. lemniscatus</i><span>. Data obtained on rainbow whiptails captured in pitfall traps and subsequently released were used to determine the size and color patterns of hatchlings and adult males and females.</span></p>","language":"English","publisher":"Southwestern Association of Naturalists","doi":"10.1894/0038-4909(2007)52[38:DHSACP]2.0.CO;2","issn":"00384909","usgsCitation":"Montgomery, C.E., Reed, R., Shaw, H.J., Boback, S.M., and Walker, J., 2007, Distribution, habitat, size, and color pattern of Cnemidophorus lemniscatus (Sauria: Teiidae) on Cayo Cochino Pequeño, Honduras: Southwestern Naturalist, v. 52, no. 1, p. 38-45, https://doi.org/10.1894/0038-4909(2007)52[38:DHSACP]2.0.CO;2.","productDescription":"8 p.","startPage":"38","endPage":"45","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":241531,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213866,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1894/0038-4909(2007)52[38:DHSACP]2.0.CO;2"}],"country":"Honduras","otherGeospatial":"Cayo Cochino Pequeno","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -86.5080213546753,\n              15.951921386704994\n            ],\n            [\n              -86.5080213546753,\n              15.966857959328598\n            ],\n            [\n              -86.496262550354,\n              15.966857959328598\n            ],\n            [\n              -86.496262550354,\n              15.951921386704994\n            ],\n            [\n              -86.5080213546753,\n              15.951921386704994\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"52","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a031fe4b0c8380cd50355","contributors":{"authors":[{"text":"Montgomery, Chad E.","contributorId":95699,"corporation":false,"usgs":false,"family":"Montgomery","given":"Chad","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":437811,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Reed, Robert N.","contributorId":10115,"corporation":false,"usgs":true,"family":"Reed","given":"Robert N.","affiliations":[],"preferred":false,"id":437809,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shaw, Hayley J.","contributorId":11836,"corporation":false,"usgs":true,"family":"Shaw","given":"Hayley","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":437807,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Boback, Scott M.","contributorId":69370,"corporation":false,"usgs":false,"family":"Boback","given":"Scott","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":437810,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Walker, James M.","contributorId":30180,"corporation":false,"usgs":true,"family":"Walker","given":"James M.","affiliations":[],"preferred":false,"id":437808,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70032765,"text":"70032765 - 2007 - Hydrothermal fluid flow and deformation in large calderas: Inferences from numerical simulations","interactions":[],"lastModifiedDate":"2023-10-04T11:09:28.693382","indexId":"70032765","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Hydrothermal fluid flow and deformation in large calderas: Inferences from numerical simulations","docAbstract":"<div class=\"\"><div class=\"article-section__content en main\"><p><span class=\"paraNumber\">[1]<span>&nbsp;</span></span>Inflation and deflation of large calderas is traditionally interpreted as being induced by volume change of a discrete source embedded in an elastic or viscoelastic half-space, though it has also been suggested that hydrothermal fluids may play a role. To test the latter hypothesis, we carry out numerical simulations of hydrothermal fluid flow and poroelastic deformation in calderas by coupling two numerical codes: (1) TOUGH2 [Pruess et al., 1999], which simulates flow in porous or fractured media, and (2) BIOT2 [Hsieh, 1996], which simulates fluid flow and deformation in a linearly elastic porous medium. In the simulations, high-temperature water (350°C) is injected at variable rates into a cylinder (radius 50 km, height 3–5 km). A sensitivity analysis indicates that small differences in the values of permeability and its anisotropy, the depth and rate of hydrothermal injection, and the values of the shear modulus may lead to significant variations in the magnitude, rate, and geometry of ground surface displacement, or uplift. Some of the simulated uplift rates are similar to observed uplift rates in large calderas, suggesting that the injection of aqueous fluids into the shallow crust may explain some of the deformation observed in calderas.</p></div></div>","language":"English","publisher":"American Geophysical Union","doi":"10.1029/2006JB004689","issn":"01480227","usgsCitation":"Hurwitz, S., Christiansen, L., and Hsieh, P.A., 2007, Hydrothermal fluid flow and deformation in large calderas: Inferences from numerical simulations: Journal of Geophysical Research B: Solid Earth, v. 112, no. B2, 16 p., https://doi.org/10.1029/2006JB004689.","productDescription":"16 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":241532,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"112","issue":"B2","noUsgsAuthors":false,"publicationDate":"2007-02-24","publicationStatus":"PW","scienceBaseUri":"505a379ee4b0c8380cd6100c","contributors":{"authors":[{"text":"Hurwitz, Shaul 0000-0001-5142-6886 shaulh@usgs.gov","orcid":"https://orcid.org/0000-0001-5142-6886","contributorId":2169,"corporation":false,"usgs":true,"family":"Hurwitz","given":"Shaul","email":"shaulh@usgs.gov","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":437814,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Christiansen, L.B.","contributorId":37952,"corporation":false,"usgs":true,"family":"Christiansen","given":"L.B.","email":"","affiliations":[],"preferred":false,"id":437812,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hsieh, Paul A. 0000-0003-4873-4874 pahsieh@usgs.gov","orcid":"https://orcid.org/0000-0003-4873-4874","contributorId":1634,"corporation":false,"usgs":true,"family":"Hsieh","given":"Paul","email":"pahsieh@usgs.gov","middleInitial":"A.","affiliations":[{"id":39113,"text":"WMA - Office of Quality Assurance","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":437813,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032767,"text":"70032767 - 2007 - Wind erodibility of soils at Fort Irwin, California (Mojave Desert), USA, before and after trampling disturbance: Implications for land management","interactions":[],"lastModifiedDate":"2012-03-12T17:21:24","indexId":"70032767","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":"Wind erodibility of soils at Fort Irwin, California (Mojave Desert), USA, before and after trampling disturbance: Implications for land management","docAbstract":"Recently disturbed and 'control' (i.e. less recently disturbed) soils in the Mojave Desert were compared for their vulnerability to wind erosion, using a wind tunnel, before and after being experimentally trampled. Before trampling, control sites had greater cyanobacterial biomass, soil surface stability, threshold friction velocities (TFV, i.e. the wind speed required to move soil particles), and sediment yield than sites that had been more recently disturbed by military manoeuvres. After trampling, all sites showed a large drop in TFVs and a concomitant increase in sediment yield. Simple correlation analyses showed that the decline in TFVs and the rise in sediment yield were significantly related to cyanobacterial biomass (as indicated by soil chlorophyll a). However, chlorophyll a amounts were very low compared to chlorophyll a amounts found at cooler desert sites, where chlorophyll a is often the most important factor in determining TFV and sediment yield. Multiple regression analyses showed that other factors at Fort Irwin were more important than cyanobacterial biomass in determining the overall site susceptibility to wind erosion. These factors included soil texture (especially the fine, medium and coarse sand fractions), rock cover, and the inherent stability of the soil (as indicated by subsurface soil stability tests). Thus, our results indicate that there is a threshold of biomass below which cyanobacterial crusts are not the dominant factor in soil vulnerability to wind erosion. Most undisturbed soil surfaces in the Mojave Desert region produce very little sediment, but even moderate disturbance increases soil loss from these sites. Because current weathering rates and dust inputs are very low, soil formation rates are low as well. Therefore, soil loss in this region is likely to have long-term effects.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earth Surface Processes and Landforms","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/esp.1372","issn":"01979337","usgsCitation":"Belnap, J., Phillips, S.L., Herrick, J.E., and Johansen, J., 2007, Wind erodibility of soils at Fort Irwin, California (Mojave Desert), USA, before and after trampling disturbance: Implications for land management: Earth Surface Processes and Landforms, v. 32, no. 1, p. 75-84, https://doi.org/10.1002/esp.1372.","startPage":"75","endPage":"84","numberOfPages":"10","costCenters":[],"links":[{"id":477185,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1002/esp.1372","text":"Publisher Index Page"},{"id":213898,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/esp.1372"},{"id":241568,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"32","issue":"1","noUsgsAuthors":false,"publicationDate":"2006-06-29","publicationStatus":"PW","scienceBaseUri":"505bd122e4b08c986b32f259","contributors":{"authors":[{"text":"Belnap, J. 0000-0001-7471-2279","orcid":"https://orcid.org/0000-0001-7471-2279","contributorId":23872,"corporation":false,"usgs":true,"family":"Belnap","given":"J.","affiliations":[],"preferred":false,"id":437817,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Phillips, S. L.","contributorId":94460,"corporation":false,"usgs":true,"family":"Phillips","given":"S.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":437820,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Herrick, J. E.","contributorId":84709,"corporation":false,"usgs":true,"family":"Herrick","given":"J.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":437819,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Johansen, J.R.","contributorId":25773,"corporation":false,"usgs":true,"family":"Johansen","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":437818,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70032768,"text":"70032768 - 2007 - Seismicity associated with the Sumatra-Andaman Islands earthquake of 26 December 2004","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032768","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Seismicity associated with the Sumatra-Andaman Islands earthquake of 26 December 2004","docAbstract":"The U.S. Geological Survey/National Earthquake Information Center (USGS/ NEIC) had computed origins for 5000 earthquakes in the Sumatra-Andaman Islands region in the first 36 weeks after the Sumatra-Andaman Islands mainshock of 26 December 2004. The cataloging of earthquakes of mb (USGS) 5.1 and larger is essentially complete for the time period except for the first half-day following the 26 December mainshock, a period of about two hours following the Nias earthquake of 28 March 2005, and occasionally during the Andaman Sea swarm of 26-30 January 2005. Moderate and larger (mb ???5.5) aftershocks are absent from most of the deep interplate thrust faults of the segments of the Sumatra-Andaman Islands subduction zone on which the 26 December mainshock occurred, which probably reflects nearly complete release of elastic strain on the seismogenic interplate-thrust during the mainshock. An exceptional thrust-fault source offshore of Banda Aceh may represent a segment of the interplate thrust that was bypassed during the mainshock. The 26 December mainshock triggered a high level of aftershock activity near the axis of the Sunda trench and the leading edge of the overthrust Burma plate. Much near-trench activity is intraplate activity within the subducting plate, but some shallow-focus, near-trench, reverse-fault earthquakes may represent an unusual seismogenic release of interplate compressional stress near the tip of the overriding plate. The interplate-thrust Nias earthquake of 28 March 2005, in contrast to the 26 December aftershock sequence, was followed by many interplate-thrust aftershocks along the length of its inferred rupture zone.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120050626","issn":"00371106","usgsCitation":"Dewey, J.W., Choy, G., Presgrave, B., Sipkin, S., Tarr, A., Benz, H., Earle, P., and Wald, D., 2007, Seismicity associated with the Sumatra-Andaman Islands earthquake of 26 December 2004: Bulletin of the Seismological Society of America, v. 97, no. 1 A SUPPL., https://doi.org/10.1785/0120050626.","costCenters":[],"links":[{"id":213927,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120050626"},{"id":241602,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"1 A SUPPL.","noUsgsAuthors":false,"publicationDate":"2007-01-01","publicationStatus":"PW","scienceBaseUri":"505b8b92e4b08c986b317932","contributors":{"authors":[{"text":"Dewey, J. W.","contributorId":31008,"corporation":false,"usgs":true,"family":"Dewey","given":"J.","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":437822,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Choy, G.","contributorId":93691,"corporation":false,"usgs":true,"family":"Choy","given":"G.","affiliations":[],"preferred":false,"id":437828,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Presgrave, B.","contributorId":38024,"corporation":false,"usgs":true,"family":"Presgrave","given":"B.","email":"","affiliations":[],"preferred":false,"id":437824,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Sipkin, S.","contributorId":71065,"corporation":false,"usgs":true,"family":"Sipkin","given":"S.","email":"","affiliations":[],"preferred":false,"id":437826,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tarr, Arthur C.","contributorId":75903,"corporation":false,"usgs":true,"family":"Tarr","given":"Arthur C.","affiliations":[],"preferred":false,"id":437827,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Benz, H.","contributorId":61953,"corporation":false,"usgs":true,"family":"Benz","given":"H.","email":"","affiliations":[],"preferred":false,"id":437825,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Earle, P.","contributorId":26860,"corporation":false,"usgs":true,"family":"Earle","given":"P.","email":"","affiliations":[],"preferred":false,"id":437821,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Wald, D. 0000-0002-1454-4514","orcid":"https://orcid.org/0000-0002-1454-4514","contributorId":37866,"corporation":false,"usgs":true,"family":"Wald","given":"D.","affiliations":[],"preferred":false,"id":437823,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}}
,{"id":70032769,"text":"70032769 - 2007 - Conodont index fossil Hindeodus changxingensis Wang fingers greatest mass extinction event","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032769","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2999,"text":"Palaeoworld","active":true,"publicationSubtype":{"id":10}},"title":"Conodont index fossil Hindeodus changxingensis Wang fingers greatest mass extinction event","docAbstract":"The marine conodont fossil species, Hindeodus changxingensis Wang, that has a distinctive morphology, is restricted to a very narrow stratigraphic interval essentially from the Permian-Triassic extinction event through the internationally recognized boundary and into the very earliest Triassic. The species is geographically widespread in the Tethyan Region, from Italy to South China, and serves as a characteristic index fossil to reliably identify this short but critical interval that encompasses the greatest mass extinction of life on earth and the boundary between the Paleozoic and Mesozoic Eras. ?? 2007 Nanjing Institute of Geology and Palaeontology, CAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Palaeoworld","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.palwor.2007.01.001","issn":"1871174X","usgsCitation":"Metcalfe, I., Nicoll, R., and Wardlaw, B.R., 2007, Conodont index fossil Hindeodus changxingensis Wang fingers greatest mass extinction event: Palaeoworld, v. 16, no. 1-3, p. 202-207, https://doi.org/10.1016/j.palwor.2007.01.001.","startPage":"202","endPage":"207","numberOfPages":"6","costCenters":[],"links":[{"id":477249,"rank":10000,"type":{"id":41,"text":"Open Access External Repository Page"},"url":"https://doi.org/10.1016/j.palwor.2007.01.001","text":"External Repository"},{"id":241603,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213928,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.palwor.2007.01.001"}],"volume":"16","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f9d2e4b0c8380cd4d7cc","contributors":{"authors":[{"text":"Metcalfe, I.","contributorId":58107,"corporation":false,"usgs":true,"family":"Metcalfe","given":"I.","email":"","affiliations":[],"preferred":false,"id":437830,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nicoll, R.S.","contributorId":80445,"corporation":false,"usgs":true,"family":"Nicoll","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":437831,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wardlaw, B. R.","contributorId":9269,"corporation":false,"usgs":true,"family":"Wardlaw","given":"B.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":437829,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032771,"text":"70032771 - 2007 - Remote sensing and GIS technology in the Global Land Ice Measurements from Space (GLIMS) Project","interactions":[],"lastModifiedDate":"2012-03-12T17:21:23","indexId":"70032771","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1315,"text":"Computers & Geosciences","printIssn":"0098-3004","active":true,"publicationSubtype":{"id":10}},"title":"Remote sensing and GIS technology in the Global Land Ice Measurements from Space (GLIMS) Project","docAbstract":"Global Land Ice Measurements from Space (GLIMS) is an international consortium established to acquire satellite images of the world's glaciers, analyze them for glacier extent and changes, and to assess these change data in terms of forcings. The consortium is organized into a system of Regional Centers, each of which is responsible for glaciers in their region of expertise. Specialized needs for mapping glaciers in a distributed analysis environment require considerable work developing software tools: terrain classification emphasizing snow, ice, water, and admixtures of ice with rock debris; change detection and analysis; visualization of images and derived data; interpretation and archival of derived data; and analysis to ensure consistency of results from different Regional Centers. A global glacier database has been designed and implemented at the National Snow and Ice Data Center (Boulder, CO); parameters have been expanded from those of the World Glacier Inventory (WGI), and the database has been structured to be compatible with (and to incorporate) WGI data. The project as a whole was originated, and has been coordinated by, the US Geological Survey (Flagstaff, AZ), which has also led the development of an interactive tool for automated analysis and manual editing of glacier images and derived data (GLIMSView). This article addresses remote sensing and Geographic Information Science techniques developed within the framework of GLIMS in order to fulfill the goals of this distributed project. Sample applications illustrating the developed techniques are also shown. ?? 2006 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Computers and Geosciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.cageo.2006.05.015","issn":"00983004","usgsCitation":"Raup, B., Kaab, A., Kargel, J., Bishop, M., Hamilton, G., Lee, E., Paul, F., Rau, F., Soltesz, D., Khalsa, S., Beedle, M., and Helm, C., 2007, Remote sensing and GIS technology in the Global Land Ice Measurements from Space (GLIMS) Project: Computers & Geosciences, v. 33, no. 1, p. 104-125, https://doi.org/10.1016/j.cageo.2006.05.015.","startPage":"104","endPage":"125","numberOfPages":"22","costCenters":[],"links":[{"id":213956,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.cageo.2006.05.015"},{"id":241633,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505aa6f2e4b0c8380cd8512f","contributors":{"authors":[{"text":"Raup, B.","contributorId":31589,"corporation":false,"usgs":true,"family":"Raup","given":"B.","email":"","affiliations":[],"preferred":false,"id":437837,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kaab, Andreas","contributorId":53175,"corporation":false,"usgs":false,"family":"Kaab","given":"Andreas","email":"","affiliations":[],"preferred":false,"id":437839,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kargel, J.S.","contributorId":88096,"corporation":false,"usgs":true,"family":"Kargel","given":"J.S.","email":"","affiliations":[],"preferred":false,"id":437843,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bishop, M.P.","contributorId":80091,"corporation":false,"usgs":true,"family":"Bishop","given":"M.P.","email":"","affiliations":[],"preferred":false,"id":437842,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Hamilton, G.","contributorId":108236,"corporation":false,"usgs":true,"family":"Hamilton","given":"G.","email":"","affiliations":[],"preferred":false,"id":437846,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lee, E.","contributorId":47716,"corporation":false,"usgs":true,"family":"Lee","given":"E.","affiliations":[],"preferred":false,"id":437838,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Paul, F.","contributorId":67740,"corporation":false,"usgs":true,"family":"Paul","given":"F.","email":"","affiliations":[],"preferred":false,"id":437840,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Rau, F.","contributorId":26527,"corporation":false,"usgs":true,"family":"Rau","given":"F.","email":"","affiliations":[],"preferred":false,"id":437836,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Soltesz, D.","contributorId":99787,"corporation":false,"usgs":true,"family":"Soltesz","given":"D.","email":"","affiliations":[],"preferred":false,"id":437845,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Khalsa, S.J.S.","contributorId":90119,"corporation":false,"usgs":true,"family":"Khalsa","given":"S.J.S.","affiliations":[],"preferred":false,"id":437844,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Beedle, M.","contributorId":77750,"corporation":false,"usgs":true,"family":"Beedle","given":"M.","email":"","affiliations":[],"preferred":false,"id":437841,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Helm, C.","contributorId":7921,"corporation":false,"usgs":true,"family":"Helm","given":"C.","email":"","affiliations":[],"preferred":false,"id":437835,"contributorType":{"id":1,"text":"Authors"},"rank":12}]}}
,{"id":70031181,"text":"70031181 - 2007 - Tree and stand transpiration in a Midwestern bur oak savanna after elm encroachment and restoration thinning","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031181","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1687,"text":"Forest Ecology and Management","active":true,"publicationSubtype":{"id":10}},"title":"Tree and stand transpiration in a Midwestern bur oak savanna after elm encroachment and restoration thinning","docAbstract":"Oak savannas, once common in the Midwest, are now isolated remnants within agricultural landscapes. Savanna remnants are frequently encroached by invasive trees to become woodlands. Thinning and prescribed burning can restore savanna structure, but the ecohydrological effects of managing these remnants are poorly understood. In this study, we measured sap flow (Js) to quantify transpiration in an Iowa bur oak (Quercus macrocarpa) savanna woodland encroached by elms (Ulmus americana), and in an adjacent restored savanna after thinning to remove elms, during summer 2004. Savanna oaks had greater mean daily Js (35.9 L dm-2 day-1) than woodland oaks (20.7 L dm-2 day-1) and elms (12.4 L dm-2 day-1). The response of Js to vapor pressure deficit (D) was unexpectedly weak, although oaks in both stands showed negative correlation between daily Js and D for D > 0.4 kPa. An earlier daily peak in Js in the elm trees showed a possible advantage for water uptake. As anticipated, the woodland's stand transpiration was greater (1.23 mm day-1) than the savanna's (0.35 mm day-1), yet the savanna achieved 30% of the woodland's transpiration with only 11% of its sapwood area. The difference in transpiration influenced water table depths, which were 2 m in the savanna and 6.5 m in the woodland. Regionally, row-crop agriculture has increased groundwater recharge and raised water tables, providing surplus water that perhaps facilitated elm encroachment. This has implications for restoration of savanna remnants. If achieving a savanna ecohydrology is an aim of restoration, then restoration strategies may require buffers, or targeting of large or hydrologically isolated remnants. ?? 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Forest Ecology and Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.foreco.2007.04.043","issn":"03781127","usgsCitation":"Asbjornsen, H., Tomer, M., Gomez-Cardenas, M., Brudvig, L., Greenan, C., and Schilling, K., 2007, Tree and stand transpiration in a Midwestern bur oak savanna after elm encroachment and restoration thinning: Forest Ecology and Management, v. 247, no. 1-3, p. 209-219, https://doi.org/10.1016/j.foreco.2007.04.043.","startPage":"209","endPage":"219","numberOfPages":"11","costCenters":[],"links":[{"id":211492,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.foreco.2007.04.043"},{"id":238788,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"247","issue":"1-3","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb79ae4b08c986b32738a","contributors":{"authors":[{"text":"Asbjornsen, H.","contributorId":86968,"corporation":false,"usgs":true,"family":"Asbjornsen","given":"H.","affiliations":[],"preferred":false,"id":430400,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tomer, M.D.","contributorId":77359,"corporation":false,"usgs":true,"family":"Tomer","given":"M.D.","email":"","affiliations":[],"preferred":false,"id":430398,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Gomez-Cardenas, M.","contributorId":82919,"corporation":false,"usgs":true,"family":"Gomez-Cardenas","given":"M.","email":"","affiliations":[],"preferred":false,"id":430399,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brudvig, L.A.","contributorId":28065,"corporation":false,"usgs":true,"family":"Brudvig","given":"L.A.","affiliations":[],"preferred":false,"id":430396,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Greenan, C.M.","contributorId":31198,"corporation":false,"usgs":true,"family":"Greenan","given":"C.M.","email":"","affiliations":[],"preferred":false,"id":430397,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Schilling, K.","contributorId":101423,"corporation":false,"usgs":true,"family":"Schilling","given":"K.","affiliations":[],"preferred":false,"id":430401,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031184,"text":"70031184 - 2007 - Lithology-derived structure classification from the joint interpretation of magnetotelluric and seismic models","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031184","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1803,"text":"Geophysical Journal International","active":true,"publicationSubtype":{"id":10}},"title":"Lithology-derived structure classification from the joint interpretation of magnetotelluric and seismic models","docAbstract":"Magnetotelluric and seismic methods provide complementary information about the resistivity and velocity structure of the subsurface on similar scales and resolutions. No global relation, however, exists between these parameters, and correlations are often valid for only a limited target area. Independently derived inverse models from these methods can be combined using a classification approach to map geologic structure. The method employed is based solely on the statistical correlation of physical properties in a joint parameter space and is independent of theoretical or empirical relations linking electrical and seismic parameters. Regions of high correlation (classes) between resistivity and velocity can in turn be mapped back and re-examined in depth section. The spatial distribution of these classes, and the boundaries between them, provide structural information not evident in the individual models. This method is applied to a 10 km long profile crossing the Dead Sea Transform in Jordan. Several prominent classes are identified with specific lithologies in accordance with local geology. An abrupt change in lithology across the fault, together with vertical uplift of the basement suggest the fault is sub-vertical within the upper crust. ?? 2007 The Authors Journal compilation ?? 2007 RAS.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geophysical Journal International","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1365-246X.2007.03440.x","issn":"0956540X","usgsCitation":"Bedrosian, P.A., Maercklin, N., Weckmann, U., Bartov, Y., Ryberg, T., and Ritter, O., 2007, Lithology-derived structure classification from the joint interpretation of magnetotelluric and seismic models: Geophysical Journal International, v. 170, no. 2, p. 737-748, https://doi.org/10.1111/j.1365-246X.2007.03440.x.","startPage":"737","endPage":"748","numberOfPages":"12","costCenters":[],"links":[{"id":487681,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1365-246x.2007.03440.x","text":"Publisher Index Page"},{"id":238819,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211519,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1365-246X.2007.03440.x"}],"volume":"170","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a4892e4b0c8380cd67f65","contributors":{"authors":[{"text":"Bedrosian, P. A.","contributorId":100109,"corporation":false,"usgs":true,"family":"Bedrosian","given":"P.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":430412,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Maercklin, N.","contributorId":81302,"corporation":false,"usgs":true,"family":"Maercklin","given":"N.","email":"","affiliations":[],"preferred":false,"id":430410,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weckmann, U.","contributorId":14186,"corporation":false,"usgs":true,"family":"Weckmann","given":"U.","email":"","affiliations":[],"preferred":false,"id":430407,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Bartov, Y.","contributorId":65230,"corporation":false,"usgs":true,"family":"Bartov","given":"Y.","email":"","affiliations":[],"preferred":false,"id":430409,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ryberg, T.","contributorId":91643,"corporation":false,"usgs":true,"family":"Ryberg","given":"T.","email":"","affiliations":[],"preferred":false,"id":430411,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Ritter, O.","contributorId":33515,"corporation":false,"usgs":true,"family":"Ritter","given":"O.","email":"","affiliations":[],"preferred":false,"id":430408,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70032963,"text":"70032963 - 2007 - Nutrient export from watersheds on Mt. Desert Island, maine, as a function of land use and fire history","interactions":[],"lastModifiedDate":"2012-03-12T17:21:37","indexId":"70032963","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1552,"text":"Environmental Monitoring and Assessment","onlineIssn":"1573-2959","printIssn":"0167-6369","active":true,"publicationSubtype":{"id":10}},"title":"Nutrient export from watersheds on Mt. Desert Island, maine, as a function of land use and fire history","docAbstract":"A study of 13 small (less than 7.5 km2) watersheds on Mt. Desert Island, Maine, was conducted from January 1999 to September 2000 to determine nutrient export delivery to coastal waters around the island, and to determine whether a series of wildfires in 1947 have affected nutrient export in burned watersheds. Nutrient export (nitrate-nitrogen, total nitrogen, total phosphorus) was determined for each watershed during the study period, and was normalized by watershed area. The yield of nitrate-nitrogen (N) ranged from 10 to 140 kg/km2/year. Total N yield ranged from 42 to 250 kg/ km2/year. Total phosphorus (P) yield ranged from 1.4 to 7.9 kg/km2/year. Watersheds entirely within Acadia National Park (lacking human land-based nutrient sources) exported significantly less total N and total P than watersheds that were partly or entirely outside the park boundary. Nitrate-N export was not significantly different in these two groups of watersheds, perhaps because atmospheric deposition is a dominant source of nitrate in the study area. No relation was observed between burn history and nutrient export. Any effect of burn history may be masked by other landscape-level factors related to nutrient export. ?? Springer Science + Business Media B.V. 2007.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Monitoring and Assessment","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1007/s10661-006-9333-3","issn":"01676369","usgsCitation":"Nielsen, M., and Kahl, J.S., 2007, Nutrient export from watersheds on Mt. Desert Island, maine, as a function of land use and fire history: Environmental Monitoring and Assessment, v. 126, no. 1-3, p. 81-96, https://doi.org/10.1007/s10661-006-9333-3.","startPage":"81","endPage":"96","numberOfPages":"16","costCenters":[],"links":[{"id":213327,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10661-006-9333-3"},{"id":240940,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"126","issue":"1-3","noUsgsAuthors":false,"publicationDate":"2007-02-02","publicationStatus":"PW","scienceBaseUri":"505a6985e4b0c8380cd73d87","contributors":{"authors":[{"text":"Nielsen, M.G.","contributorId":103635,"corporation":false,"usgs":true,"family":"Nielsen","given":"M.G.","email":"","affiliations":[],"preferred":false,"id":438729,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kahl, J. S.","contributorId":77885,"corporation":false,"usgs":false,"family":"Kahl","given":"J.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":438728,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032964,"text":"70032964 - 2007 - Best management practices for nutrient and sediment retention in urban stormwater runoff","interactions":[],"lastModifiedDate":"2012-03-12T17:21:36","indexId":"70032964","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2262,"text":"Journal of Environmental Quality","active":true,"publicationSubtype":{"id":10}},"title":"Best management practices for nutrient and sediment retention in urban stormwater runoff","docAbstract":"Stormwater management infrastructure is utilized in urban areas to alleviate flooding caused by decreased landscape permeability from increased impervious surface cover (ISC) construction. In this study, we examined two types of stormwater detention basins, SDB-BMPs (stormwater detention basin-best management practice), and SDB-FCs (stormwater detention basin-flood control). Both are constructed to retain peak stormwater flows for flood mitigation. However, the SDB-BMPs are also designed using basin topography and wetland vegetation to provide water quality improvement (nutrient and sediment removal and retention). The objective of this study was to compare SDB (both SDB-BMP and SDB-FC) surface soil P concentrations, P saturation, and Fe chemistry with natural riparian wetlands (RWs), using sites in Fairfax County, Virginia as a model system. The SDB-BMPs had significantly greater surface soil total P (Pt) concentrations than the RWs and SDB-FCs (831.9 ?? 32.5 kg ha-1, 643.3 ?? 19.1 kg ha-1, and 652.1 ?? 18.8 kg ha-1, respectively). The soil P sorption capacities of SDB-BMPs were similar to the RWs, and were greater than those of SDB-FCs, appearing to result in greater soil P removal and retention in SDB-BMPs compared with SDB-FCs. Increased Fe concentrations and relatively greater amounts of more crystalline forms of Fe in SDB-BMP soils suggested increased sediment deposition compared with RW and SDB-FC soils. Data suggest that SDB nutrient and sediment retention is facilitated in SDB-BMPs. When stormwater management is necessary, use of SDB-BMPs instead of SDB-FCs could foster more responsible urban development and be an appropriate mitigation action for receiving aquatic ecosystems. ?? ASA, CSSA, SSSA.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Environmental Quality","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.2134/jeq2006.0142","issn":"00472425","usgsCitation":"Hogan, D., and Walbridge, M., 2007, Best management practices for nutrient and sediment retention in urban stormwater runoff: Journal of Environmental Quality, v. 36, no. 2, p. 386-395, https://doi.org/10.2134/jeq2006.0142.","startPage":"386","endPage":"395","numberOfPages":"10","costCenters":[],"links":[{"id":213354,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.2134/jeq2006.0142"},{"id":240972,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"36","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f0cfe4b0c8380cd4a915","contributors":{"authors":[{"text":"Hogan, D.M.","contributorId":106711,"corporation":false,"usgs":true,"family":"Hogan","given":"D.M.","email":"","affiliations":[],"preferred":false,"id":438731,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Walbridge, M.R.","contributorId":80488,"corporation":false,"usgs":true,"family":"Walbridge","given":"M.R.","email":"","affiliations":[],"preferred":false,"id":438730,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70031185,"text":"70031185 - 2007 - Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia","interactions":[],"lastModifiedDate":"2012-03-12T17:21:17","indexId":"70031185","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1135,"text":"Bulletin of the Seismological Society of America","onlineIssn":"1943-3573","printIssn":"0037-1106","active":true,"publicationSubtype":{"id":10}},"title":"Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia","docAbstract":"The paucity of ground-motion data in stable continental regions (SCRs) remains a key limitation when developing relations that seek to predict effects of strong ground shaking from large damaging earthquakes. It is desirable to combine data from more than one SCR to increase database size, but this raises questions as to whether the source and attenuation properties of the SCRs are equivalent. We compare recently compiled spectral-amplitude databases from small to moderate events (moment magnitudes, 2.0 ??? M ??? 5.0) in both southeastern Australia and eastern North America (ENA). Both are SCRs but are widely separated, spatially and in tectonic history. We statistically compare ground motions by plotting mean and standard deviations of spectral amplitudes for data grouped in magnitude and distance bins. These comparisons show that the source and attenuation properties of the two regions are very similar, in particular, at shorter hypocentral distances R (i.e., R < 70 km). At larger distances, regional attenuation differences are observed that may be attributed to differences in crustal structure. We conclude that it is valid to combine the Australian and ENA ground-motion datasets in the development of ground-motion prediction equations, with some limitations in frequency and distance ranges. These ground-motion relations may serve as generic functions for SCRs around the world.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Bulletin of the Seismological Society of America","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1785/0120060206","issn":"00371106","usgsCitation":"Allen, T., and Atkinson, G.M., 2007, Comparison of earthquake source spectra and attenuation in eastern North America and southeastern Australia: Bulletin of the Seismological Society of America, v. 97, no. 4, p. 1350-1354, https://doi.org/10.1785/0120060206.","startPage":"1350","endPage":"1354","numberOfPages":"5","costCenters":[],"links":[{"id":211546,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1785/0120060206"},{"id":238848,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"97","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f85de4b0c8380cd4d05d","contributors":{"authors":[{"text":"Allen, T.I.","contributorId":6659,"corporation":false,"usgs":true,"family":"Allen","given":"T.I.","email":"","affiliations":[],"preferred":false,"id":430413,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Atkinson, G. M.","contributorId":69283,"corporation":false,"usgs":true,"family":"Atkinson","given":"G.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":430414,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70030847,"text":"70030847 - 2007 - First evidence of egg deposition by walleye (<i>Sander vitreus</i>) in the Detroit River","interactions":[],"lastModifiedDate":"2016-04-29T09:44:53","indexId":"70030847","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2330,"text":"Journal of Great Lakes Research","active":true,"publicationSubtype":{"id":10}},"title":"First evidence of egg deposition by walleye (<i>Sander vitreus</i>) in the Detroit River","docAbstract":"<p><span>The importance of fish spawning habitat in channels connecting the Great Lakes to fishery productivity in those lakes is poorly understood and has not been adequately documented. The Detroit River is a reputed spawning and nursery area for many fish, including walleye (</span><i>Sander vitreus</i><span>) that migrate between adjacent Lakes Erie and St. Clair. During April&ndash;May 2004, near the head of the Detroit River, we collected 136 fish eggs from the bottom of the river on egg mats. We incubated the eggs at the Great Lakes Science Center until they hatched. All eleven larvae that hatched from the eggs were identified as walleye. These eggs and larvae are the first credible scientific evidence that walleye spawn in the Detroit River. Their origin might be a stock of river-spawning walleye. Such a stock of walleye could potentially add resilience to production by walleye stocks that spawn and are harvested in adjacent waters.</span></p>","language":"English","publisher":"International Association for Great Lakes Research","doi":"10.3394/0380-1330(2007)33[512:FEOEDB]2.0.CO;2","issn":"03801330","usgsCitation":"Manny, B., Kennedy, G., Allen, J., and French, J.R., 2007, First evidence of egg deposition by walleye (<i>Sander vitreus</i>) in the Detroit River: Journal of Great Lakes Research, v. 33, no. 2, p. 512-516, https://doi.org/10.3394/0380-1330(2007)33[512:FEOEDB]2.0.CO;2.","productDescription":"5 p.","startPage":"512","endPage":"516","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":238959,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a1054e4b0c8380cd53c19","contributors":{"authors":[{"text":"Manny, B.A. 0000-0002-4074-9329","orcid":"https://orcid.org/0000-0002-4074-9329","contributorId":6000,"corporation":false,"usgs":true,"family":"Manny","given":"B.A.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":false,"id":428919,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kennedy, G.W. 0000-0003-1686-6960","orcid":"https://orcid.org/0000-0003-1686-6960","contributorId":86291,"corporation":false,"usgs":true,"family":"Kennedy","given":"G.W.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":false,"id":428922,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Allen, J.D.","contributorId":57656,"corporation":false,"usgs":true,"family":"Allen","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":428921,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"French, J. R. P. III","contributorId":47574,"corporation":false,"usgs":true,"family":"French","given":"J.","suffix":"III","email":"","middleInitial":"R. P.","affiliations":[],"preferred":false,"id":428920,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031188,"text":"70031188 - 2007 - Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality","interactions":[],"lastModifiedDate":"2018-10-17T08:25:36","indexId":"70031188","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":"Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality","docAbstract":"<p>Kohout convection is the name given to the circulation of saline groundwater deep within carbonate platforms, first proposed by F.A. Kohout in the 1960s for south Florida. It is now seen as an Mg pump for dolomitization by seawater. As proposed by Kohout, cold seawater is drawn into the Florida platform from the deep Straits of Florida as part of a geothermally driven circulation in which the seawater then rises in the interior of the platform to mix and exit with the discharging meteoric water of the Floridan aquifer system. Simulation of the asymmetrically emergent Florida platform with the new three-dimensional (3-D), finite-element groundwater flow and transport model SUTRA-MS, which couples salinity- and temperature-dependent density variations, allows analysis of how much of the cyclic flow is due to geothermal heating (free convection) as opposed to mixing with meteoric water discharging to the shoreline (forced convection). Simulation of the system with and without geothermal heating reveals that the inflow of seawater from the Straits of Florida would be similar without the heat flow, but the distribution would differ significantly. The addition of heat flow reduces the asymmetry of the circulation: it decreases seawater inflows on the Atlantic side by 8% and on the Guff of Mexico side by half. The study illustrates the complex interplay of freshwater-saltwater mixing, geothermal heat flow, and projected dolomitization in complicated 3-D settings with asymmetric boundary conditions and realistic horizontal and vertical variations in hydraulic properties.</p>","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G23374A.1","issn":"00917613","usgsCitation":"Hughes, J., Vacher, H.L., and Sanford, W.E., 2007, Three-dimensional flow in the Florida platform: Theoretical analysis of Kohout convection at its type locality: Geology, v. 35, no. 7, p. 663-666, https://doi.org/10.1130/G23374A.1.","productDescription":"4 p.","startPage":"663","endPage":"666","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":238821,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211521,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G23374A.1"}],"country":"United States","state":"Florida","volume":"35","issue":"7","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505bb327e4b08c986b325bf4","contributors":{"authors":[{"text":"Hughes, J.D.","contributorId":25539,"corporation":false,"usgs":true,"family":"Hughes","given":"J.D.","email":"","affiliations":[],"preferred":false,"id":430430,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Vacher, H. Leonard","contributorId":90529,"corporation":false,"usgs":false,"family":"Vacher","given":"H.","email":"","middleInitial":"Leonard","affiliations":[],"preferred":false,"id":430431,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sanford, Ward E. 0000-0002-6624-0280 wsanford@usgs.gov","orcid":"https://orcid.org/0000-0002-6624-0280","contributorId":2268,"corporation":false,"usgs":true,"family":"Sanford","given":"Ward","email":"wsanford@usgs.gov","middleInitial":"E.","affiliations":[{"id":436,"text":"National Research Program - Eastern Branch","active":true,"usgs":true},{"id":37778,"text":"WMA - Integrated Modeling and Prediction Division","active":true,"usgs":true}],"preferred":true,"id":430432,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70030817,"text":"70030817 - 2007 - Clean coal initiatives in Indiana","interactions":[],"lastModifiedDate":"2012-03-12T17:21:03","indexId":"70030817","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2039,"text":"International Journal of Energy Sector Management","active":true,"publicationSubtype":{"id":10}},"title":"Clean coal initiatives in Indiana","docAbstract":"Purpose - Indiana is listed among the top ten coal states in the USA and annually mines about 35 million short tons (million tons) of coal from the vast reserves of the US Midwest Illinois Coal Basin. The implementation and commercialization of clean coal technologies is important to the economy of the state and has a significant role in the state's energy plan for increasing the use of the state's natural resources. Coal is a substantial Indiana energy resource and also has stable and relatively low costs, compared with the increasing costs of other major fuels. This indigenous energy source enables the promotion of energy independence. The purpose of this paper is to outline the significance of clean coal projects for achieving this objective. Design/methodology/approach - The paper outlines the clean coal initiatives being taken in Indiana and the research carried out at the Indiana Center for Coal Technology Research. Findings - Clean coal power generation and coal for transportation fuels (coal-to-liquids - CTL) are two major topics being investigated in Indiana. Coking coal, data compilation of the bituminous coal qualities within the Indiana coal beds, reducing dependence on coal imports, and provision of an emissions free environment are important topics to state legislators. Originality/value - Lessons learnt from these projects will be of value to other states and countries.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"International Journal of Energy Sector Management","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1108/17506220710738623","issn":"17506220","usgsCitation":"Bowen, B., Irwin, M., Sparrow, F., Mastalerz, M., Yu, Z., and Kramer, R., 2007, Clean coal initiatives in Indiana: International Journal of Energy Sector Management, v. 1, no. 1, p. 96-108, https://doi.org/10.1108/17506220710738623.","startPage":"96","endPage":"108","numberOfPages":"13","costCenters":[],"links":[{"id":211662,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1108/17506220710738623"},{"id":238994,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"1","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f63fe4b0c8380cd4c633","contributors":{"authors":[{"text":"Bowen, B.H.","contributorId":82920,"corporation":false,"usgs":true,"family":"Bowen","given":"B.H.","email":"","affiliations":[],"preferred":false,"id":428820,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Irwin, M.W.","contributorId":49595,"corporation":false,"usgs":true,"family":"Irwin","given":"M.W.","email":"","affiliations":[],"preferred":false,"id":428817,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Sparrow, F.T.","contributorId":13430,"corporation":false,"usgs":true,"family":"Sparrow","given":"F.T.","email":"","affiliations":[],"preferred":false,"id":428815,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Mastalerz, Maria","contributorId":78065,"corporation":false,"usgs":true,"family":"Mastalerz","given":"Maria","affiliations":[],"preferred":false,"id":428819,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yu, Z.","contributorId":32696,"corporation":false,"usgs":true,"family":"Yu","given":"Z.","email":"","affiliations":[],"preferred":false,"id":428816,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kramer, R.A.","contributorId":60435,"corporation":false,"usgs":true,"family":"Kramer","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":428818,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70030813,"text":"70030813 - 2007 - Forecasting probabilistic seismic shaking for greater Tokyo from 400 years of intensity observations","interactions":[],"lastModifiedDate":"2012-03-12T17:21:03","indexId":"70030813","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1436,"text":"Earthquake Spectra","active":true,"publicationSubtype":{"id":10}},"title":"Forecasting probabilistic seismic shaking for greater Tokyo from 400 years of intensity observations","docAbstract":"The long recorded history of earthquakes in Japan affords an opportunity to forecast seismic shaking exclusively from past shaking. We calculate the time-averaged (Poisson) probability of severe shaking by using more than 10,000 intensity observations recorded since AD 1600 in a 350 km-wide box centered on Tokyo. Unlike other hazard-assessment methods, source and site effects are included without modeling, and we do not need to know the size or location of any earthquake nor the location and slip rate of any fault. The two key assumptions are that the slope of the observed frequency-intensity relation at every site is the same, and that the 400-year record is long enough to encompass the full range of seismic behavior. Tests we conduct here suggest that both assumptions are sound. The resulting 30-year probability of IJMA ??? 6 shaking (??? PGA ??? 0.4 g or MMI ??? IX) is 30%-40% in Tokyo, Kawasaki, and Yokohama, and 10% 15% in Chiba and Tsukuba. This result means that there is a 30% chance that 4 million people will be subjected to IJMA ??? 6 shaking during an average 30-year period. We also produce exceedance maps of PGA for building-code regulations, and calculate short-term hazard associated with a hypothetical catastrophe bond. Our results resemble an independent assessment developed from conventional seismic hazard analysis for greater Tokyo. ?? 2007, Earthquake Engineering Research Institute.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Earthquake Spectra","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1193/1.2753504","issn":"87552930","usgsCitation":"Bozkurt, S., Stein, R., and Toda, S., 2007, Forecasting probabilistic seismic shaking for greater Tokyo from 400 years of intensity observations: Earthquake Spectra, v. 23, no. 3, p. 525-546, https://doi.org/10.1193/1.2753504.","startPage":"525","endPage":"546","numberOfPages":"22","costCenters":[],"links":[{"id":211609,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1193/1.2753504"},{"id":238926,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"23","issue":"3","noUsgsAuthors":false,"publicationDate":"2007-08-01","publicationStatus":"PW","scienceBaseUri":"505a1318e4b0c8380cd54507","contributors":{"authors":[{"text":"Bozkurt, S.B.","contributorId":14188,"corporation":false,"usgs":true,"family":"Bozkurt","given":"S.B.","email":"","affiliations":[],"preferred":false,"id":428796,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stein, R.S.","contributorId":8875,"corporation":false,"usgs":true,"family":"Stein","given":"R.S.","email":"","affiliations":[],"preferred":false,"id":428795,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Toda, S.","contributorId":102228,"corporation":false,"usgs":true,"family":"Toda","given":"S.","email":"","affiliations":[],"preferred":false,"id":428797,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70032983,"text":"70032983 - 2007 - Colored dissolved organic matter in Tampa Bay, Florida","interactions":[],"lastModifiedDate":"2022-11-14T17:20:47.244238","indexId":"70032983","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2662,"text":"Marine Chemistry","active":true,"publicationSubtype":{"id":10}},"title":"Colored dissolved organic matter in Tampa Bay, Florida","docAbstract":"Absorption and fluorescence of colored dissolved organic matter (CDOM) and concentrations of dissolved organic carbon (DOC), chlorophyll and total suspended solids in Tampa Bay and its adjacent rivers were examined in June and October of 2004. Except in Old Tampa Bay (OTB), the spatial distribution of CDOM showed a conservative relationship with salinity in June, 2004 (a<sub>CDOM</sub>(400) = − 0.19 × salinity + 6.78, R<sup>2</sup> = 0.98, n = 17, salinity range = 1.1–32.5) with little variations in absorption spectral slope and fluorescence efficiency. This indicates that CDOM distribution was dominated by mixing. In October, 2004, CDOM distribution was nonconservative with an average absorption coefficient (a<sub>CDOM</sub>(400), ∼ 7.76 m<sup>-1</sup>) about seven times higher than that in June (∼ 1.11 m<sup>-1</sup>). The nonconservative behavior was caused largely by CDOM removal at intermediate salinities (e.g., a<sub>CDOM</sub>(400) removal > 15% at salinity ∼ 13.0), which likely resulted from photobleaching due to stronger stratification. The spatial and seasonal distributions of CDOM in Tampa Bay showed that the two largest rivers, the Alafia River (AR) and Hillsborough River (HR) were dominant CDOM sources to most of the bay. In OTB, however, CDOM showed distinctive differences: lower absorption coefficient, higher absorption spectral slopes, and lower ratios of CDOM absorption to DOC and higher fluorescence efficiency. These differences may have stemmed from (1) changes in CDOM composition by more intensive photobleaching due to the longer residence time of water mass in OTB; (2) other sources of CDOM than the HR/AR inputs, such as local creeks, streams, groundwater, and/or bottom re-suspension. Average CDOM absorption in Tampa Bay at 443 nm, a<sub>CDOM</sub>(443), was about five times higher in June and about ten times higher in October than phytoplankton pigment absorption, a<sub>ph</sub>(443), indicating that blue light attenuation in the water column was dominated by CDOM rather than by phytoplankton absorption throughout the year.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Marine Chemistry","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.marchem.2006.12.007","issn":"03044203","usgsCitation":"Chen, Z., Hu, C., Conmy, R., Muller-Karger, F., and Swarzenski, P., 2007, Colored dissolved organic matter in Tampa Bay, Florida: Marine Chemistry, v. 104, no. 1-2, p. 98-109, https://doi.org/10.1016/j.marchem.2006.12.007.","productDescription":"12 p.","startPage":"98","endPage":"109","numberOfPages":"12","costCenters":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"links":[{"id":213147,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.marchem.2006.12.007"},{"id":240743,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Florida","otherGeospatial":"Tampa Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -82.755578,27.520902 ], [ -82.755578,27.838234 ], [ -82.449468,27.838234 ], [ -82.449468,27.520902 ], [ -82.755578,27.520902 ] ] ] } } ] }","volume":"104","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059f7c6e4b0c8380cd4ccce","contributors":{"authors":[{"text":"Chen, Z.","contributorId":26117,"corporation":false,"usgs":true,"family":"Chen","given":"Z.","email":"","affiliations":[],"preferred":false,"id":438831,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hu, C.","contributorId":75748,"corporation":false,"usgs":true,"family":"Hu","given":"C.","email":"","affiliations":[],"preferred":false,"id":438834,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Conmy, R.N.","contributorId":83745,"corporation":false,"usgs":true,"family":"Conmy","given":"R.N.","affiliations":[],"preferred":false,"id":438835,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Muller-Karger, F.","contributorId":68512,"corporation":false,"usgs":true,"family":"Muller-Karger","given":"F.","affiliations":[],"preferred":false,"id":438833,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Swarzenski, P. 0000-0003-0116-0578","orcid":"https://orcid.org/0000-0003-0116-0578","contributorId":49156,"corporation":false,"usgs":true,"family":"Swarzenski","given":"P.","affiliations":[],"preferred":false,"id":438832,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70032984,"text":"70032984 - 2007 - Littoral fish assemblages of the alien-dominated Sacramento-San Joaquin Delta, California, 1980-1983 and 2001-2003","interactions":[],"lastModifiedDate":"2021-05-26T17:45:02.286603","indexId":"70032984","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1584,"text":"Estuaries and Coasts","active":true,"publicationSubtype":{"id":10}},"title":"Littoral fish assemblages of the alien-dominated Sacramento-San Joaquin Delta, California, 1980-1983 and 2001-2003","docAbstract":"<p>We analyzed monthly boat electrofishing data to characterize the littoral fish assemblages of five regions of the Sacramento-San Joaquin Delta (northern, southern, eastern, western, and central), California, during two sampling periods, 1980-1983 (1980s) and 2001-2003 (2000s), to provide information pertinent to the restoration of fish populations in this highly altered estuary. During the 1980s, almost 11,000 fish were captured, including 13 native species and 24 alien species. During the 2000s, just over 39,000 fish were captured, including 15 native species and 24 alien species. Catch per unit effort (CPUE) of total fish, alien fish, and centrarchid fish were greater in the 2000s compared with the 1980s, largely because of increased centrarchid fish CPUE. These differences in CPUE were associated with the spread of submerged aquatic vegetation (SAV), particularly an alien aquatic macrophyte Egeria densa. Native fish CPUE declined from the 1980s to the 2000s, but there was no single factor that could explain the decline. Native fish were most abundant in the northern region during both sampling periods. Nonmetric multidimensional scaling indicated similar patterns of fish assemblage composition during the two sampling periods, with the northern and western regions characterized by the presence of native species. The separation of the northern and western regions from the other regions was most distinct in the 2000s. Our results suggest that native fish restoration efforts will be most successful in the northern portion of the Delta. Management decisions on the Delta should include consideration of possible effects on SAV in littoral habitats and the associated fish assemblages and ecological processes.&nbsp;</p>","language":"English","publisher":"Springer","doi":"10.1007/BF02782979","usgsCitation":"Brown, L., and Michniuk, D., 2007, Littoral fish assemblages of the alien-dominated Sacramento-San Joaquin Delta, California, 1980-1983 and 2001-2003: Estuaries and Coasts, v. 30, no. 1, p. 186-200, https://doi.org/10.1007/BF02782979.","productDescription":"15 p.","startPage":"186","endPage":"200","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"links":[{"id":240774,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Sacramento–San Joaquin Delta","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -122.03887939453125,\n              37.92686760148135\n            ],\n            [\n              -121.4208984375,\n              37.92686760148135\n            ],\n            [\n              -121.4208984375,\n              38.158316657442\n            ],\n            [\n              -122.03887939453125,\n              38.158316657442\n            ],\n            [\n              -122.03887939453125,\n              37.92686760148135\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","volume":"30","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a48b5e4b0c8380cd6808a","contributors":{"authors":[{"text":"Brown, L. R. 0000-0001-6702-4531","orcid":"https://orcid.org/0000-0001-6702-4531","contributorId":66391,"corporation":false,"usgs":true,"family":"Brown","given":"L. R.","affiliations":[],"preferred":false,"id":438837,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Michniuk, D.","contributorId":8296,"corporation":false,"usgs":true,"family":"Michniuk","given":"D.","email":"","affiliations":[],"preferred":false,"id":438836,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70032989,"text":"70032989 - 2007 - The effect of Appalachian mountaintop mining on interior forest","interactions":[],"lastModifiedDate":"2018-02-23T13:31:54","indexId":"70032989","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2602,"text":"Landscape Ecology","active":true,"publicationSubtype":{"id":10}},"title":"The effect of Appalachian mountaintop mining on interior forest","docAbstract":"<p><span>Southern Appalachian forests are predominantly interior because they are spatially extensive with little disturbance imposed by other uses of the land. Appalachian mountaintop mining increased substantially during the 1990s, posing a threat to the interior character of the forest. We used spatial convolution to identify interior forest at multiple scales on circa 1992 and 2001 land-cover maps of the Southern Appalachians. Our analyses show that interior forest loss was 1.75–5.0 times greater than the direct forest loss attributable to mountaintop mining. Mountaintop mining in the southern Appalachians has reduced forest interior area more extensively than the reduction that would be expected based on changes in overall forest area alone. The loss of Southern Appalachian interior forest is of global significance because of the worldwide rarity of large expanses of temperate deciduous forest.</span></p>","language":"English","publisher":"Springer","doi":"10.1007/s10980-006-9040-z","issn":"09212973","usgsCitation":"Wickham, J.D., Riitters, K., Wade, T., Coan, M., and Homer, C.G., 2007, The effect of Appalachian mountaintop mining on interior forest: Landscape Ecology, v. 22, no. 2, p. 179-187, https://doi.org/10.1007/s10980-006-9040-z.","productDescription":"9 p.","startPage":"179","endPage":"187","numberOfPages":"9","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":240841,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":213236,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10980-006-9040-z"}],"volume":"22","issue":"2","noUsgsAuthors":false,"publicationDate":"2006-10-19","publicationStatus":"PW","scienceBaseUri":"505bab0fe4b08c986b322baf","contributors":{"authors":[{"text":"Wickham, James D.","contributorId":72278,"corporation":false,"usgs":false,"family":"Wickham","given":"James","email":"","middleInitial":"D.","affiliations":[{"id":6914,"text":"U.S. Environmental Protection Agency","active":true,"usgs":false}],"preferred":false,"id":438852,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Riitters, K.H.","contributorId":30570,"corporation":false,"usgs":true,"family":"Riitters","given":"K.H.","affiliations":[],"preferred":false,"id":438853,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wade, T.G.","contributorId":74113,"corporation":false,"usgs":true,"family":"Wade","given":"T.G.","email":"","affiliations":[],"preferred":false,"id":438855,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Coan, Michael mcoan@usgs.gov","contributorId":5398,"corporation":false,"usgs":true,"family":"Coan","given":"Michael","email":"mcoan@usgs.gov","affiliations":[],"preferred":true,"id":438851,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Homer, Collin G. 0000-0003-4755-8135 homer@usgs.gov","orcid":"https://orcid.org/0000-0003-4755-8135","contributorId":2262,"corporation":false,"usgs":true,"family":"Homer","given":"Collin","email":"homer@usgs.gov","middleInitial":"G.","affiliations":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true},{"id":223,"text":"Earth Resources Observation and Science (EROS) Center (Geography)","active":false,"usgs":true}],"preferred":true,"id":438854,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70030811,"text":"70030811 - 2007 - Loess sedimentation in Tibet: provenance, processes, and link with Quaternary glaciations","interactions":[],"lastModifiedDate":"2012-03-12T17:21:03","indexId":"70030811","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3219,"text":"Quaternary Science Reviews","active":true,"publicationSubtype":{"id":10}},"title":"Loess sedimentation in Tibet: provenance, processes, and link with Quaternary glaciations","docAbstract":"Well-preserved loess deposits are found on the foothills of mountains along the middle reaches of the Yarlung Zangbo River in southern Tibet. Optically stimulated luminescence (OSL) dating is used to determine loess ages by applying the single-aliquot regeneration technique. Geochemical, mineralogical, and granulometric measurements were carried out to allow a comparison between loess from Tibet and the Chinese Loess Plateau. Our results demonstrate that (i) the loess deposits have a basal age of 13-11 ka, suggesting they accumulated after the last deglaciation, (ii) loess in southern Tibet has a \"glacial\" origin, resulting from eolian sorting of glaciofluvial outwash deposits from braided river channels or alluvial fans by local near-surface winds, and (iii) the present loess in the interior of Tibet has accumulated since the last deglaciation when increased monsoonal circulation provided an increased vegetation cover that was sufficient for trapping eolian silt. The lack of full-glacial loess is either due to minimal vegetation cover or possibly due to the erosion of loess as glaciofluvial outwash during the beginning of each interglacial. Such processes would have been repeated during each glacial-interglacial cycle of the Quaternary. ?? 2007 Elsevier Ltd. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Science Reviews","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.quascirev.2007.05.003","issn":"02773791","usgsCitation":"Sun, J., Li, S., Muhs, D., and Li, B., 2007, Loess sedimentation in Tibet: provenance, processes, and link with Quaternary glaciations: Quaternary Science Reviews, v. 26, no. 17-18, p. 2265-2280, https://doi.org/10.1016/j.quascirev.2007.05.003.","startPage":"2265","endPage":"2280","numberOfPages":"16","costCenters":[],"links":[{"id":238924,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211607,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.quascirev.2007.05.003"}],"volume":"26","issue":"17-18","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a493ce4b0c8380cd68449","contributors":{"authors":[{"text":"Sun, Jielun","contributorId":33443,"corporation":false,"usgs":true,"family":"Sun","given":"Jielun","email":"","affiliations":[],"preferred":false,"id":428785,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Li, S.-H.","contributorId":45884,"corporation":false,"usgs":true,"family":"Li","given":"S.-H.","email":"","affiliations":[],"preferred":false,"id":428786,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Muhs, D.R. 0000-0001-7449-251X","orcid":"https://orcid.org/0000-0001-7449-251X","contributorId":61460,"corporation":false,"usgs":true,"family":"Muhs","given":"D.R.","affiliations":[],"preferred":false,"id":428787,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Li, B.","contributorId":85395,"corporation":false,"usgs":true,"family":"Li","given":"B.","email":"","affiliations":[],"preferred":false,"id":428788,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70031189,"text":"70031189 - 2007 - Late Quaternary distal tephra-fall deposits in lacustrine sediments, Kenai Peninsula, Alaska","interactions":[],"lastModifiedDate":"2019-02-25T15:18:35","indexId":"70031189","displayToPublicDate":"2007-01-01T00:00:00","publicationYear":"2007","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3218,"text":"Quaternary Research","active":true,"publicationSubtype":{"id":10}},"title":"Late Quaternary distal tephra-fall deposits in lacustrine sediments, Kenai Peninsula, Alaska","docAbstract":"<p><span>Tephra-fall deposits from Cook Inlet volcanoes were detected in sediment cores from Tustumena and Paradox Lakes, Kenai Peninsula, Alaska, using magnetic susceptibility and petrography. The ages of tephra layers were estimated using 21&nbsp;</span><span class=\"sup\">14</span><span>C ages on macrofossils. Tephras layers are typically fine, gray ash, 1–5&nbsp;mm thick, and composed of varying proportions of glass shards, pumice, and glass-coated phenocrysts. Of the two lakes, Paradox Lake contained a higher frequency of tephra (0.8 tephra/100 yr; 109 over the 13,200-yr record). The unusually large number of tephra in this lake relative to others previously studied in the area is attributed to the lake's physiography, sedimentology, and limnology. The frequency of ash fall was not constant through the Holocene. In Paradox Lake, tephra layers are absent between ca. 800–2200, 3800–4800, and 9000–10,300&nbsp;cal yr BP, despite continuously layered lacustrine sediment. In contrast, between 5000 and 9000&nbsp;cal yr BP, an average of 1.7 tephra layers are present per 100 yr. The peak period of tephra fall (7000–9000&nbsp;cal yr BP; 2.6 tephra/100 yr) in Paradox Lake is consistent with the increase in volcanism between 7000 and 9000 yr ago recorded in the Greenland ice cores.</span></p>","language":"English","publisher":"Cambridge University Press","doi":"10.1016/j.yqres.2007.03.006","issn":"00335894","usgsCitation":"de Fontaine, C., Kaufman, D.S., Scott, A.R., Werner, A., Waythomas, C.F., and Brown, T., 2007, Late Quaternary distal tephra-fall deposits in lacustrine sediments, Kenai Peninsula, Alaska: Quaternary Research, v. 68, no. 1, p. 64-78, https://doi.org/10.1016/j.yqres.2007.03.006.","productDescription":"15 p.","startPage":"64","endPage":"78","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":238850,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":211548,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.yqres.2007.03.006"}],"volume":"68","issue":"1","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"505a4525e4b0c8380cd67089","contributors":{"authors":[{"text":"de Fontaine, C.S.","contributorId":43976,"corporation":false,"usgs":true,"family":"de Fontaine","given":"C.S.","affiliations":[],"preferred":false,"id":430438,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kaufman, D. S.","contributorId":18006,"corporation":false,"usgs":false,"family":"Kaufman","given":"D.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":430436,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Scott, Anderson R.","contributorId":7909,"corporation":false,"usgs":true,"family":"Scott","given":"Anderson","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":430433,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Werner, A.","contributorId":42030,"corporation":false,"usgs":true,"family":"Werner","given":"A.","email":"","affiliations":[],"preferred":false,"id":430437,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Waythomas, Christopher F. 0000-0002-3898-272X cwaythomas@usgs.gov","orcid":"https://orcid.org/0000-0002-3898-272X","contributorId":640,"corporation":false,"usgs":true,"family":"Waythomas","given":"Christopher","email":"cwaythomas@usgs.gov","middleInitial":"F.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":430434,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Brown, T.A.","contributorId":12885,"corporation":false,"usgs":true,"family":"Brown","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":430435,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70031196,"text":"70031196 - 2007 - Effects of anthropogenic developments on common Raven nesting biology in the west Mojave Desert","interactions":[],"lastModifiedDate":"2023-07-26T11:48:12.549559","indexId":"70031196","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":"Effects of anthropogenic developments on common Raven nesting biology in the west Mojave Desert","docAbstract":"<p>Subsidized predators may affect prey abundance, distribution, and demography. Common Ravens (Corvus corax) are anthropogenically subsidized throughout their range and, in the Mojave Desert, have increased in number dramatically over the last 3-4 decades. Human-provided food resources are thought to be important drivers of raven population growth, but human developments add other features as well, such as nesting platforms. From 1996 to 2000, we examined the nesting ecology of ravens in the Mojave Desert, relative to anthropogenic development. Ravens nested disproportionately near point sources of food and water subsidies (such as towns, landfills, and ponds) but not near roads (sources of road-killed carrion), even though both sources of subsidy enhanced fledging success. Initiation of breeding activity was more likely when a nest from the previous year was present at the start of a breeding season but was not affected by access to food. The relative effect of environmental modifications on fledging success varied from year to year, but the effect of access to humanprovided resources was comparatively consistent, suggesting that humans provide consistently high-quality breeding habitat for ravens. Anthropogenic land cover types in the desert are expected to promote raven population growth and to allow ravens to occupy parts of the desert that otherwise would not support them. Predatory impacts of ravens in the Mojave Desert can therefore be considered indirect effects of anthropogenic development.</p>","language":"English","publisher":"Ecological Society of America","doi":"10.1890/06-1114.1","issn":"10510761","usgsCitation":"Kristan, W., and Boarman, W., 2007, Effects of anthropogenic developments on common Raven nesting biology in the west Mojave Desert: Ecological Applications, v. 17, no. 6, p. 1703-1713, https://doi.org/10.1890/06-1114.1.","productDescription":"11 p.","startPage":"1703","endPage":"1713","numberOfPages":"11","costCenters":[],"links":[{"id":238883,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Mojave Desert","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -116.71818395045116,\n              36.09370934263055\n            ],\n            [\n              -116.71818395045116,\n              33.8807150099009\n            ],\n            [\n              -114.17044893828503,\n              33.8807150099009\n            ],\n            [\n              -114.17044893828503,\n              36.09370934263055\n            ],\n            [\n              -116.71818395045116,\n              36.09370934263055\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","volume":"17","issue":"6","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a068de4b0c8380cd512da","contributors":{"authors":[{"text":"Kristan, W. B. III","contributorId":106444,"corporation":false,"usgs":true,"family":"Kristan","given":"W. B.","suffix":"III","affiliations":[],"preferred":false,"id":430472,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Boarman, W.I.","contributorId":73523,"corporation":false,"usgs":true,"family":"Boarman","given":"W.I.","email":"","affiliations":[],"preferred":false,"id":430471,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
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