Mineral resource assessments integrate and synthesize available information as a basis for estimating the location, quality, and quantity of undiscovered mineral resources. This probabilistic mineral resource assessment of undiscovered sandstone copper deposits within Paleoproterozoic metasedimentary rocks of the Kodar-Udokan area in Russia is a contribution to a global assessment led by the U.S. Geological Survey (USGS). The purposes of this study are to (1) delineate permissive areas (tracts) to indicate where undiscovered sandstone-hosted copper deposits may occur within 2 km of the surface, (2) provide a database of known sandstone copper deposits and significant prospects, (3) estimate numbers of undiscovered deposits within these permissive tracts at several levels of confidence, and (4) provide probabilistic estimates of amounts of copper (Cu) and mineralized rock that could be contained in undiscovered deposits within each tract. The workshop for the assessment, held in October 2009, used a three-part form of mineral resource assessment as described by Singer (1993) and Singer and Menzie (2010).
\nPermissive tracts were delineated by estimating the volume of rock that contains the stratigraphic section ranging from the Chitkanda to the Sakukan Formations of the Udokan Complex to a depth of 2 km and then projecting this rock volume to the surface. The six permissive tracts delineated in this assessment occur in several domains, referred to as troughs in Russian literature, which represent remnants of a much larger basin that likely covered the Kodar-Udokan region. Tracts range in size from about 100 km2 to 800 km2. The mapped distributions of rocks as shown on 1:200,000-scale geologic maps, supplemented in some areas by prospect mapping and drilling, were used to delineate the tracts.
\nIn this study area, data are insufficient to constrain the original basin geometry or the structural or stratigraphic traps that would have localized copper mineralization. Some alteration is described, and the types of sandstone cements vary; however, no patterns are known that provide evidence for regional flow paths of metal-bearing brines that could localize deposits.
\nThis probabilistic assessment indicates that a significant amount of undiscovered copper is associated with sediment-hosted stratabound copper deposits in the Kodar-Udokan Trough. In the assessment, a mean of 21 undiscovered deposits is estimated to occur within the Kodar-Udokan area. There are two known deposits in the area that contain drill-identified resources of 19.6 million metric tons of copper. Using Monte Carlo simulation, probabilistic estimates of the numbers of undiscovered sandstone copper deposits for these tracts were combined with tonnage and grade distributions of sandstone copper deposits to forecast an arithmetic mean of 20.6 million metric tons of undiscovered copper. Significant value can be expected from associated metals, particularly silver.
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The dataset contains 10.8 million observations spanning January 1893 through January 2009 from 846 weather stations in six states and 13 climate divisions. In addition to processing the data for distribution, water-year totals and other statistical parameters were calculated for each station with more than 2 years of observations. Division-wide total precipitation, expressed as the average deviation from the individual station means of a climate division, shows that the region—including the Grand Canyon, Arizona, area—has been affected by alternating multidecadal episodes of drought and wet conditions.
\nIn addition to compiling and analyzing the long-term regional precipitation data, a second dataset consisting of high-temporal-resolution precipitation measurements collected between November 2003 and January 2009 from 10 localities along the Colorado River in Grand Canyon was compiled. An exploratory study of these high-temporal-resolution precipitation measurements suggests that on a daily basis precipitation patterns are generally similar to those at a long-term weather station in the canyon, which in turn resembles the patterns at other long-term stations on the canyon rims; however, precipitation amounts recorded by the individual inner canyon weather stations can vary substantially from station to station. Daily and seasonal rainfall patterns apparent in these data are not random. For example, the inner canyon record, although short and fragmented, reveals three episodes of widespread, heavy precipitation in late summer 2004, early winter 2005, and summer 2007. The 2004 event and several others had sufficient rainfall to initiate potentially pervasive erosion of the late Holocene terraces and related archeological features located along the Colorado River in Grand Canyon.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20141006","usgsCitation":"Hereford, R., Bennett, G., and Fairley, H., 2014, Precipitation variability of the Grand Canyon region, 1893 through 2009, and its implications for studying effects of gullying of Holocene terraces and associated archeological sites in Grand Canyon, Arizona: U.S. Geological Survey Open-File Report 2014-1006, Report: iii, 23 p.; Database, https://doi.org/10.3133/ofr20141006.","productDescription":"Report: iii, 23 p.; Database","numberOfPages":"29","onlineOnly":"Y","additionalOnlineFiles":"Y","temporalStart":"1893-01-01","temporalEnd":"2009-12-31","ipdsId":"IP-025450","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"links":[{"id":282905,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2014/1006/downloads/ofr2014-1006_Database.zip"},{"id":282903,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2014/1006/"},{"id":282904,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2014/1006/pdf/ofr2014-1006.pdf"},{"id":282906,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20141006.jpg"}],"country":"United States","state":"Arizona","otherGeospatial":"Colorado River;Grand Canyon","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -119.01,32.0 ], [ -119.01,41.01 ], [ -103.77,41.01 ], [ -103.77,32.0 ], [ -119.01,32.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6c54e4b0b290851047c0","contributors":{"authors":[{"text":"Hereford, Richard 0000-0002-0892-7367 rhereford@usgs.gov","orcid":"https://orcid.org/0000-0002-0892-7367","contributorId":3620,"corporation":false,"usgs":true,"family":"Hereford","given":"Richard","email":"rhereford@usgs.gov","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":488507,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bennett, Glenn E. gbennett@usgs.gov","contributorId":4153,"corporation":false,"usgs":true,"family":"Bennett","given":"Glenn E.","email":"gbennett@usgs.gov","affiliations":[],"preferred":true,"id":488508,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fairley, Helen C.","contributorId":10506,"corporation":false,"usgs":true,"family":"Fairley","given":"Helen C.","affiliations":[],"preferred":false,"id":488509,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70048016,"text":"70048016 - 2014 - Assessing risks to humans from invasive Burmese pythons in Everglades National Park, Florida, USA","interactions":[],"lastModifiedDate":"2014-04-02T13:35:00","indexId":"70048016","displayToPublicDate":"2014-02-27T13:30:00","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3779,"text":"Wildlife Society Bulletin","onlineIssn":"1938-5463","printIssn":"0091-7648","active":true,"publicationSubtype":{"id":10}},"title":"Assessing risks to humans from invasive Burmese pythons in Everglades National Park, Florida, USA","docAbstract":"Invasive Burmese pythons (Python molurus bivittatus) are now established across a large area of southern Florida, USA, including all of Everglades National Park (NP). The presence of these large-bodied snakes in the continental United States has attracted intense media attention, including regular reference to the possibility of these snakes preying on humans. Over the course of a decade (2003–2012), we solicited reports of apparently unprovoked strikes directed at humans in Everglades NP. We summarize the circumstances surrounding each of the 5 reported incidents, which occurred between 2006 and 2012. All strikes were directed toward biologists moving through flooded wetlands; 2 strikes resulted in minor injury and none resulted in constriction. We consider most of these strikes to be cases of “mistaken identity,” in which the python initiated a strike at a potential prey item but aborted its predatory behavior prior to constriction and ingestion. No strikes are known to have been directed at park visitors despite visitation rates averaging over one million per year during this period. We conclude that while risks to humans should not be completely discounted, the relative risk of a human being killed by a python in Everglades NP appears to be extremely low.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Wildlife Society Bulletin","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/wsb.413","usgsCitation":"Reed, R., and Snow, R.W., 2014, Assessing risks to humans from invasive Burmese pythons in Everglades National Park, Florida, USA: Wildlife Society Bulletin, 4 p., https://doi.org/10.1002/wsb.413.","productDescription":"4 p.","ipdsId":"IP-051199","costCenters":[],"links":[{"id":473164,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doaj.org/article/274a0c63aae54da39e5290503bc57c02","text":"Publisher Index Page"},{"id":285307,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":285306,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/wsb.413"}],"country":"United States","state":"Florida","otherGeospatial":"Everglades National Park","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -81.5212,24.85 ], [ -81.5212,25.8918 ], [ -80.3887,25.8918 ], [ -80.3887,24.85 ], [ -81.5212,24.85 ] ] ] } } ] }","noUsgsAuthors":false,"publicationDate":"2014-02-27","publicationStatus":"PW","scienceBaseUri":"53517024e4b05569d805a15f","contributors":{"authors":[{"text":"Reed, Robert N.","contributorId":10115,"corporation":false,"usgs":true,"family":"Reed","given":"Robert N.","affiliations":[],"preferred":false,"id":483603,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Snow, Ray W.","contributorId":76449,"corporation":false,"usgs":false,"family":"Snow","given":"Ray","email":"","middleInitial":"W.","affiliations":[{"id":13415,"text":"Everglades National Park","active":true,"usgs":false}],"preferred":false,"id":483604,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70073928,"text":"fs20143004 - 2014 - Estimate of undiscovered copper resources of the world, 2013","interactions":[],"lastModifiedDate":"2014-02-27T11:06:16","indexId":"fs20143004","displayToPublicDate":"2014-02-27T10:54:00","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2014-3004","title":"Estimate of undiscovered copper resources of the world, 2013","docAbstract":"Using a geology-based assessment methodology, the U.S. Geological Survey estimated a mean of 3,500 million metric tons (Mt) of undiscovered copper among 225 tracts around the world. Annual U.S. copper consumption is 2 Mt; global consumption is 20 Mt. The USGS assessed undiscovered copper in two deposit types that account for about 80 percent of the world's copper supply. Results of the assessment are provided by deposit type for 11 regions. Approximately 50 percent of the global total occurs in South America, South Central Asia and Indochina, and North America combined.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/fs20143004","usgsCitation":"Johnson, K.M., Hammarstrom, J.M., Zientek, M.L., and Dicken, C., 2014, Estimate of undiscovered copper resources of the world, 2013: U.S. Geological Survey Fact Sheet 2014-3004, 3 p., https://doi.org/10.3133/fs20143004.","productDescription":"3 p.","ipdsId":"IP-053253","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":282888,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs20143004.jpg"},{"id":282883,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/fs/2014/3004/pdf/fs2014-3004.pdf"},{"id":282882,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/2014/3004/"}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -180.0,-90.0 ], [ -180.0,90.0 ], [ 180.0,90.0 ], [ 180.0,-90.0 ], [ -180.0,-90.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd57d7e4b0b290850f7b4c","contributors":{"authors":[{"text":"Johnson, Kathleen M. kjohnson@usgs.gov","contributorId":2110,"corporation":false,"usgs":true,"family":"Johnson","given":"Kathleen","email":"kjohnson@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":true,"id":489243,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hammarstrom, Jane M. 0000-0003-2742-3460 jhammars@usgs.gov","orcid":"https://orcid.org/0000-0003-2742-3460","contributorId":1226,"corporation":false,"usgs":true,"family":"Hammarstrom","given":"Jane","email":"jhammars@usgs.gov","middleInitial":"M.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true},{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":489242,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Zientek, Michael L. 0000-0002-8522-9626 mzientek@usgs.gov","orcid":"https://orcid.org/0000-0002-8522-9626","contributorId":2420,"corporation":false,"usgs":true,"family":"Zientek","given":"Michael","email":"mzientek@usgs.gov","middleInitial":"L.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":489244,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dicken, Connie L. cdicken@usgs.gov","contributorId":4714,"corporation":false,"usgs":true,"family":"Dicken","given":"Connie L.","email":"cdicken@usgs.gov","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":489245,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70093635,"text":"sir20145006 - 2014 - Mean annual, seasonal, and monthly precipitation and runoff in Arkansas, 1951-2011","interactions":[],"lastModifiedDate":"2014-02-27T11:03:37","indexId":"sir20145006","displayToPublicDate":"2014-02-27T10:52:00","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":334,"text":"Scientific Investigations Report","code":"SIR","onlineIssn":"2328-0328","printIssn":"2328-031X","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2014-5006","title":"Mean annual, seasonal, and monthly precipitation and runoff in Arkansas, 1951-2011","docAbstract":"This report describes long-term annual, seasonal, and monthly means for precipitation and runoff in Arkansas for the period from 1951 through 2011. Precipitation means were estimated using data from the Parameter-elevation Regressions on Independent Slopes Model database; while total runoff, groundwater runoff, and surface runoff means were estimated using data from 123 active and inactive U.S. Geological Survey continuous-record streamflow-gaging stations located in Arkansas and surrounding States. Annual precipitation in Arkansas for the period from 1951 through 2011 had a mean of 49.8 inches. Of the six physiographic sections in Arkansas, the Ouachita Mountains had the largest mean annual precipitation at 53.0 inches, while the Springfield-Salem plateaus had the smallest mean annual precipitation at 45.5 inches. The mean annual total runoff for Arkansas was 17.8 inches. The Ouachita Mountains had the largest mean annual total runoff at 20.4 inches, while the Springfield-Salem plateaus had the smallest mean annual total runoff at 15.0 inches. Runoff is diminished during the dry season, which is attributed to increased losses from evapotranspiration, consumptive uses including irrigation, and increased withdrawals for public and private water supplies. The decline in runoff during the dry season is observed across the State in all physiographic sections. Spatial results for precipitation and runoff are presented in a series of maps that are available for download from the publication Web page in georeferenced raster formats.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20145006","collaboration":"Prepared in cooperation with the Arkansas Natural Resources Commission","usgsCitation":"Pugh, A., and Westerman, D.A., 2014, Mean annual, seasonal, and monthly precipitation and runoff in Arkansas, 1951-2011: U.S. Geological Survey Scientific Investigations Report 2014-5006, Report: v, 40 p.; Downloads Directory: Appendixes 1-3, https://doi.org/10.3133/sir20145006.","productDescription":"Report: v, 40 p.; Downloads Directory: Appendixes 1-3","numberOfPages":"49","onlineOnly":"Y","additionalOnlineFiles":"Y","temporalStart":"1951-01-01","temporalEnd":"2011-12-31","ipdsId":"IP-053322","costCenters":[{"id":129,"text":"Arkansas Water Science Center","active":true,"usgs":true}],"links":[{"id":282887,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20145006.jpg"},{"id":282884,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2014/5006/"},{"id":282885,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2014/5006/pdf/sir2014-5006.pdf"},{"id":282886,"type":{"id":3,"text":"Appendix"},"url":"https://pubs.usgs.gov/sir/2014/5006/downloads/"}],"projection":"USA Contiguous Albers Equal Area Conic USGS version","datum":"North American Datum 1983","country":"United States","state":"Arkansas","otherGeospatial":"Ouachita Mountains;Springfield-salem Plateaus","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -95.75,32.0 ], [ -95.75,38.0 ], [ -88.9,38.0 ], [ -88.9,32.0 ], [ -95.75,32.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd666be4b0b29085100bb6","contributors":{"authors":[{"text":"Pugh, Aaron L. apugh@usgs.gov","contributorId":2480,"corporation":false,"usgs":true,"family":"Pugh","given":"Aaron L.","email":"apugh@usgs.gov","affiliations":[{"id":129,"text":"Arkansas Water Science Center","active":true,"usgs":true}],"preferred":true,"id":490101,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Westerman, Drew A. 0000-0002-8522-776X dawester@usgs.gov","orcid":"https://orcid.org/0000-0002-8522-776X","contributorId":4526,"corporation":false,"usgs":true,"family":"Westerman","given":"Drew","email":"dawester@usgs.gov","middleInitial":"A.","affiliations":[{"id":129,"text":"Arkansas Water Science Center","active":true,"usgs":true},{"id":24708,"text":"Lower Mississippi-Gulf Water Science Center","active":true,"usgs":true}],"preferred":true,"id":490102,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70060514,"text":"ofr20141002 - 2014 - Photomosaics and event evidence from the Frazier Mountain paleoseismic site, trench 1, cuts 1–4, San Andreas Fault Zone, southern California (2007–2009)","interactions":[],"lastModifiedDate":"2014-02-27T11:30:01","indexId":"ofr20141002","displayToPublicDate":"2014-02-27T07:19:00","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2014-1002","title":"Photomosaics and event evidence from the Frazier Mountain paleoseismic site, trench 1, cuts 1–4, San Andreas Fault Zone, southern California (2007–2009)","docAbstract":"The Frazier Mountain paleoseismic site is located at the northwest end of the Mojave section of the San Andreas Fault, in a small, closed depression at the base of Frazier Mountain near Tejon Pass, California (lat 34.8122° N., long 118.9034° W.). The site was known to contain a good record of earthquakes due to previous excavations by Lindvall and others (2002). This report provides data resulting from four nested excavations, or cuts, along trench 1 (T1) in 2007 and 2009 at the Frazier Mountain site. The four cuts were excavated progressively deeper and wider in an orientation perpendicular to the San Andreas Fault, exposing distal fan and marsh sediments deposited since ca. A.D. 1200. The results of the trenching show that earthquakes that ruptured the site have repeatedly produced a small depression or sag on the surface, which is subsequently infilled with sand and silt deposits. This report provides high-resolution photomosaics and logs for the T1 cuts, a detailed stratigraphic column for the deposits, and a table summarizing all of the evidence for ground rupturing paleoearthquakes logged in the trenches.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20141002","usgsCitation":"Scharer, K.M., Fumal, T.E., Weldon, R.J., and Streig, A.R., 2014, Photomosaics and event evidence from the Frazier Mountain paleoseismic site, trench 1, cuts 1–4, San Andreas Fault Zone, southern California (2007–2009): U.S. Geological Survey Open-File Report 2014-1002, Report: ii, 24 p.; Plate 1: 89.25 x 36 inches; Plate 2: 81.05 x 36 inches; Plate 3: 67.77 x 36 inches; Plate 4: 83.63 x 36 inches, https://doi.org/10.3133/ofr20141002.","productDescription":"Report: ii, 24 p.; Plate 1: 89.25 x 36 inches; Plate 2: 81.05 x 36 inches; Plate 3: 67.77 x 36 inches; Plate 4: 83.63 x 36 inches","numberOfPages":"26","onlineOnly":"Y","ipdsId":"IP-044918","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":282876,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20141002.PNG"},{"id":282870,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2014/1002/"},{"id":282873,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2014/1002/pdf/ofr2014-1002_sheet2.pdf"},{"id":282874,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2014/1002/pdf/ofr2014-1002_sheet3.pdf"},{"id":282875,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2014/1002/pdf/ofr2014-1002_sheet4.pdf"},{"id":282871,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2014/1002/pdf/ofr2014-1002_pamphlet.pdf"},{"id":282872,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2014/1002/pdf/ofr2014-1002_sheet1.pdf"}],"country":"United States","state":"California","otherGeospatial":"Frazier Mountain","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -120.0,34.0 ], [ -120.0,36.0 ], [ -118.0,36.0 ], [ -118.0,34.0 ], [ -120.0,34.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6b61e4b0b29085103e27","contributors":{"authors":[{"text":"Scharer, Katherine M. 0000-0003-2811-2496 kscharer@usgs.gov","orcid":"https://orcid.org/0000-0003-2811-2496","contributorId":3385,"corporation":false,"usgs":true,"family":"Scharer","given":"Katherine","email":"kscharer@usgs.gov","middleInitial":"M.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":487884,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fumal, Tom E.","contributorId":73090,"corporation":false,"usgs":true,"family":"Fumal","given":"Tom","email":"","middleInitial":"E.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":false,"id":487886,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weldon, Ray J. II","contributorId":47859,"corporation":false,"usgs":true,"family":"Weldon","given":"Ray","suffix":"II","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":487885,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Streig, Ashley R.","contributorId":103569,"corporation":false,"usgs":true,"family":"Streig","given":"Ashley","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":487887,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70132327,"text":"70132327 - 2014 - Daytime avoidance of chemosensory alarm cues by adult sea lamprey (Petromyzon marinus)","interactions":[],"lastModifiedDate":"2014-11-07T14:46:10","indexId":"70132327","displayToPublicDate":"2014-02-27T01:00:00","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1169,"text":"Canadian Journal of Fisheries and Aquatic Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Daytime avoidance of chemosensory alarm cues by adult sea lamprey (Petromyzon marinus)","docAbstract":"Sea lamprey (Petromyzon marinus) avoid damage-released and predator chemosensory cues at night, but their response to these cues during the day is unknown. Here, we explored (i) whether sea lamprey avoid these cues during the day and (ii) the effect of water temperature on the avoidance of chemosensory alarm cues in two diurnal laboratory experiments. We hypothesized that daytime activity would be temperature-dependent and that only sea lamprey vulnerable to predation (i.e., not hiding) would behaviourally respond to chemosensory alarm cues. Ten groups of ten sea lamprey were exposed to one of a variety of potential chemosensory cues. The experiments were conducted over a range of temperatures to quantify the effect of temperature on avoidance behaviour. Consistent with our hypothesis, a higher proportion of animals were active during daytime as water temperature increased. Moving sea lamprey showed an avoidance response to 2-phenylethylamine (a compound found in mammalian urine) and human saliva once water temperatures had risen to mean (±SD) = 13.7 (±1.4) °C. Resting and hiding sea lamprey did not show an avoidance response to any of the experimental stimuli.
","language":"English","publisher":"NRC Research Press","usgsCitation":"Di Rocco, R., Belanger, C., Imre, I., Brown, G., and Johnson, N.S., 2014, Daytime avoidance of chemosensory alarm cues by adult sea lamprey (Petromyzon marinus): Canadian Journal of Fisheries and Aquatic Sciences, p. 824-830.","productDescription":"7 p.","startPage":"824","endPage":"830","numberOfPages":"7","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-054423","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":295943,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"545ded2be4b0ba8303f92b7f","contributors":{"authors":[{"text":"Di Rocco, Richard","contributorId":126735,"corporation":false,"usgs":false,"family":"Di Rocco","given":"Richard","affiliations":[{"id":6585,"text":"Algoma University","active":true,"usgs":false}],"preferred":false,"id":522763,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Belanger, Cowan","contributorId":126736,"corporation":false,"usgs":false,"family":"Belanger","given":"Cowan","email":"","affiliations":[{"id":6585,"text":"Algoma University","active":true,"usgs":false}],"preferred":false,"id":522764,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Imre, István","contributorId":126737,"corporation":false,"usgs":false,"family":"Imre","given":"István","affiliations":[{"id":6585,"text":"Algoma University","active":true,"usgs":false}],"preferred":false,"id":522765,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brown, Grant","contributorId":126738,"corporation":false,"usgs":false,"family":"Brown","given":"Grant","affiliations":[{"id":6586,"text":"Concordia University","active":true,"usgs":false}],"preferred":false,"id":522766,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Johnson, Nicholas S. 0000-0002-7419-6013 njohnson@usgs.gov","orcid":"https://orcid.org/0000-0002-7419-6013","contributorId":597,"corporation":false,"usgs":true,"family":"Johnson","given":"Nicholas","email":"njohnson@usgs.gov","middleInitial":"S.","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":522762,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70068441,"text":"ofr20131298 - 2014 - Groundwater quality at Alabama Plating and Vincent Spring, Vincent, Alabama, 2007–2008","interactions":[],"lastModifiedDate":"2014-02-26T14:56:57","indexId":"ofr20131298","displayToPublicDate":"2014-02-26T14:43:00","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2013-1298","title":"Groundwater quality at Alabama Plating and Vincent Spring, Vincent, Alabama, 2007–2008","docAbstract":"The former Alabama Plating site in Vincent, Alabama, includes the location where the Alabama Plating Company operated an electroplating facility from 1956 until 1986. The operation of the facility generated waste containing cyanide, arsenic, cadmium, chromium, copper, lead, zinc, and other heavy metals. Contamination resulting from the site operations was identified in groundwater, soil, and sediment. Vincent Spring, used as a public water supply by the city of Vincent, Alabama, is located about ½ mile southwest of the site. The U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency, conducted an investigation at Vincent Spring and the Alabama Plating site, Vincent, Alabama, during 2007–2008 to evaluate the groundwater quality and evaluate the potential effect of contaminated groundwater on the water quality of Vincent Spring. The results of the investigation will provide scientific data and information on the occurrence, fate, and transport of contaminants in the water resources of the area and aid in the evaluation of the vulnerability of the public water supply to contamination.
\nSamples were analyzed to evaluate the water quality at the former plating site, investigate the presence of possible contaminant indicators at Vincent Spring, and determine the usefulness of stable isotopes and geochemical properties in understanding groundwater flow and contaminant transport in the area. Samples collected from 16 monitor wells near the plating site and Vincent Spring were analyzed for major constituents, trace metals, nutrients, and the stable isotopes for hydrogen (2H/H) and oxygen (18O/16O).
\nGroundwater collected from Vincent Spring was characterized as a calcium-magnesium-bicarbonate water type with total dissolved solids concentrations ranging from 110 to 120 milligrams per liter and pH ranging from about 7.5 to 7.9 units. Groundwater chemistry at the monitor wells at the Alabama Plating site was highly variable by location and depth. Dissolved solids concentrations ranged from 28 to 2,880 milligrams per liter, and the water types varied from calcium-magnesium-bicarbonate-chloride, to calcium-sulfate or calcium-magnesium-sulfate, to sodium-chloride water types. The stable isotope ratios for hydrogen (2H/H) and oxygen (18O/16O) for water from the monitor wells and from Vincent Spring, based on a single sampling event, can be separated into three groups: (1) Vincent Spring, (2) monitor wells MW03 and MW28, and (3) the remaining Alabama Plating monitor wells.
\nThe geochemical and stable isotope analyses indicate that water from Vincent Spring is distinct from water from the Alabama Plating monitor wells; however, this evaluation is based on a single sampling event. Although the water from Vincent Spring, for this sampling event, is different and does not seem to be affected by contaminated groundwater from the Alabama Plating site, additional hydrologic and water-quality data are needed to fully identify flow paths, the potential for contaminant transport, and water-quality changes through time.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20131298","collaboration":"Prepared in cooperation with the U.S. Environmental Protection Agency, Region 4","usgsCitation":"Bradley, M., and Gill, A.C., 2014, Groundwater quality at Alabama Plating and Vincent Spring, Vincent, Alabama, 2007–2008: U.S. Geological Survey Open-File Report 2013-1298, Report: iv, 20 p.; Plate: 17 x 11 inches, https://doi.org/10.3133/ofr20131298.","productDescription":"Report: iv, 20 p.; Plate: 17 x 11 inches","numberOfPages":"24","onlineOnly":"Y","ipdsId":"IP-043797","costCenters":[{"id":105,"text":"Alabama Water Science Center","active":true,"usgs":true}],"links":[{"id":282860,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20131298.jpg"},{"id":282855,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2013/1298/pdf/of2013-1298_Al_plating_plate_1.pdf"},{"id":282853,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2013/1298/"},{"id":282858,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2013/1298/pdf/of2013-1298.pdf"}],"country":"United States","state":"Alabama","city":"Vincent","otherGeospatial":"Vincent Spring","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -86.456545,33.349857 ], [ -86.456545,33.422296 ], [ -86.368698,33.422296 ], [ -86.368698,33.349857 ], [ -86.456545,33.349857 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5fe9e4b0b290850fc98b","contributors":{"authors":[{"text":"Bradley, Mike 0000-0002-2979-265X mbradley@usgs.gov","orcid":"https://orcid.org/0000-0002-2979-265X","contributorId":582,"corporation":false,"usgs":true,"family":"Bradley","given":"Mike","email":"mbradley@usgs.gov","affiliations":[{"id":581,"text":"Tennessee Water Science Center","active":true,"usgs":true},{"id":24708,"text":"Lower Mississippi-Gulf Water Science Center","active":true,"usgs":true}],"preferred":true,"id":488010,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gill, Amy C. 0000-0002-5738-9390 acgill@usgs.gov","orcid":"https://orcid.org/0000-0002-5738-9390","contributorId":220,"corporation":false,"usgs":true,"family":"Gill","given":"Amy","email":"acgill@usgs.gov","middleInitial":"C.","affiliations":[],"preferred":true,"id":488009,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70073663,"text":"sim3284 - 2014 - Geologic map of the Ute Mountain 7.5' quadrangle, Taos County, New Mexico, and Conejos and Costilla Counties, Colorado","interactions":[],"lastModifiedDate":"2022-04-18T18:26:13.641151","indexId":"sim3284","displayToPublicDate":"2014-02-26T14:31:00","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":333,"text":"Scientific Investigations Map","code":"SIM","onlineIssn":"2329-132X","printIssn":"2329-1311","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"3284","title":"Geologic map of the Ute Mountain 7.5' quadrangle, Taos County, New Mexico, and Conejos and Costilla Counties, Colorado","docAbstract":"The Ute Mountain 7.5' quadrangle is located in the south-central part of the San Luis Basin of northern New Mexico, in the Rio Grande del Norte National Monument, and contains deposits that record volcanic, tectonic, and associated alluvial and colluvial processes over the past four million years. Ute Mountain has the distinction of being one of the largest intermediate composition eruptive centers of the Taos Plateau, a largely volcanic tableland occupying the southern portion of the San Luis Basin. Ute Mountain rises to an elevation in excess of 3,000 m, nearly 700 m above the basaltic plateau at its base, and is characterized by three distinct phases of Pliocene eruptive activity recorded in the stratigraphy exposed on the flanks of the mountain and in the Rio Grande gorge. Unconformably overlain by largely flat-lying lava flows of Servilleta Basalt, the area surrounding Ute Mountain records a westward thickening of basin-fill volcanic deposits interstratified in the subsurface with Pliocene basin-fill sedimentary deposits derived from older Tertiary and Precambrian sources to the east. Superimposed on this volcanic stratigraphy are alluvial and colluvial deposits derived from the flanks of Ute Mountain and more distally-derived alluvium from the uplifted Sangre de Cristo Mountains to the east, that record a complex temporal and stratigraphic succession of Quaternary basin deposition and erosion. Pliocene and younger basin deposition was accommodated along predominantly north-trending fault-bounded grabens. These poorly exposed fault scarps cutting lava flows of Ute Mountain volcano. The Servilleta Basalt and younger surficial deposits record largely down-to-east basinward displacement. Faults are identified with varying confidence levels in the map area. Recognizing and mapping faults developed near the surface in young, brittle volcanic rocks is difficult because: (1) they tend to form fractured zones tens of meters wide rather than discrete fault planes, (2) the relative youth of the deposits has resulted in only modest displacements on most faults, and (3) some of the faults may have significant strike-slip components that do not result in large vertical offsets that are readily apparent in offset of sub-horizontal contacts. Those faults characterized as “certain” either have distinct offset of map units or had slip planes that were directly observed in the field. Lineaments defined from magnetic anomalies form an additional constraint on potential fault locations and are indicated as such on the map sheet.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sim3284","issn":"2329-132X","usgsCitation":"Thompson, R.A., Turner, K.J., Shroba, R.R., Cosca, M.A., Ruleman, C., Lee, J.P., and Brandt, T.R., 2014, Geologic map of the Ute Mountain 7.5' quadrangle, Taos County, New Mexico, and Conejos and Costilla Counties, Colorado: U.S. Geological Survey Scientific Investigations Map 3284, 1 Plate: 44.00 x 40.00 inches; Downloads Directory, https://doi.org/10.3133/sim3284.","productDescription":"1 Plate: 44.00 x 40.00 inches; Downloads Directory","onlineOnly":"Y","additionalOnlineFiles":"N","ipdsId":"IP-038234","costCenters":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":282852,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sim3284.jpg"},{"id":282857,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/sim/3284/downloads/"},{"id":282856,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/sim/3284/pdf/sim3284.pdf","text":"Map","linkFileType":{"id":1,"text":"pdf"},"description":"SIM 3284 Map"},{"id":282854,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sim/3284/"},{"id":398950,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_99623.htm"}],"scale":"24000","projection":"Polyconic projection","datum":"1927 North American Datum","country":"United States","state":"Colorado, New Mexico","county":"Conejos County, Costilla County, Taos County","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -105.75,36.875 ], [ -105.75,37.0 ], [ -105.625,37.0 ], [ -105.625,36.875 ], [ -105.75,36.875 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5d30e4b0b290850faf46","contributors":{"authors":[{"text":"Thompson, Ren A. 0000-0002-3044-3043 rathomps@usgs.gov","orcid":"https://orcid.org/0000-0002-3044-3043","contributorId":1265,"corporation":false,"usgs":true,"family":"Thompson","given":"Ren","email":"rathomps@usgs.gov","middleInitial":"A.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":489004,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, Kenzie J. 0000-0002-4940-3981 kturner@usgs.gov","orcid":"https://orcid.org/0000-0002-4940-3981","contributorId":496,"corporation":false,"usgs":true,"family":"Turner","given":"Kenzie","email":"kturner@usgs.gov","middleInitial":"J.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":489002,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shroba, Ralph R. 0000-0002-2664-1813 rshroba@usgs.gov","orcid":"https://orcid.org/0000-0002-2664-1813","contributorId":1266,"corporation":false,"usgs":true,"family":"Shroba","given":"Ralph","email":"rshroba@usgs.gov","middleInitial":"R.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":489005,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cosca, Michael A. 0000-0002-0600-7663 mcosca@usgs.gov","orcid":"https://orcid.org/0000-0002-0600-7663","contributorId":1000,"corporation":false,"usgs":true,"family":"Cosca","given":"Michael","email":"mcosca@usgs.gov","middleInitial":"A.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":489003,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ruleman, Chester A.","contributorId":41533,"corporation":false,"usgs":true,"family":"Ruleman","given":"Chester A.","affiliations":[],"preferred":false,"id":489008,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lee, John P. jplee@usgs.gov","contributorId":3291,"corporation":false,"usgs":true,"family":"Lee","given":"John","email":"jplee@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":489007,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Brandt, Theodore R. 0000-0002-7862-9082 tbrandt@usgs.gov","orcid":"https://orcid.org/0000-0002-7862-9082","contributorId":1267,"corporation":false,"usgs":true,"family":"Brandt","given":"Theodore","email":"tbrandt@usgs.gov","middleInitial":"R.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":489006,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70073662,"text":"sim3283 - 2014 - Geologic map of the Sunshine 7.5' quadrangle, Taos County, New Mexico","interactions":[],"lastModifiedDate":"2022-04-18T18:23:33.326388","indexId":"sim3283","displayToPublicDate":"2014-02-26T14:19:20","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":333,"text":"Scientific Investigations Map","code":"SIM","onlineIssn":"2329-132X","printIssn":"2329-1311","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"3283","title":"Geologic map of the Sunshine 7.5' quadrangle, Taos County, New Mexico","docAbstract":"The Sunshine 7.5' quadrangle is located in the south-central part of the San Luis Basin of northern New Mexico, in the Rio Grande del Norte National Monument, and contains deposits that record volcanic, tectonic, and associated alluvial and colluvial processes over the past four million years. Sunshine Valley, named for the small locale of Sunshine, is incised by a series of northeast-trending drainages cut into Tertiary and Quaternary alluvial deposits forming an extensive alluvial apron between the east flank of the Sangre de Cristo Mountains and the Rio Grande. These deposits predominantly overlie gently eastward-dipping lava flows of Pliocene Servilleta Basalt erupted from centers west of the map area. Servilleta Basalt lava flows terminate to the south against the elevated topography of three volcanic centers of the Taos Plateau volcanic field. From west to east these are Cerro de la Olla, Cerro Chiflo, and Guadalupe Mountain that are exposed in the southern part of the map area. Remnants of Miocene volcanic rocks are exposed near the southwestern edge of the map area and record evidence of an eroded volcanic terrain underlying deposits of the Taos Plateau volcanic field. These deposits are likely fault bounded to the east, roughly coincident with north to northwest trending, down-to-east faults in the southwestern quarter of the map area. The down-to-east normal faults reflect the basinward migration of the western margin of the Sunshine Valley sub-basin of the southern San Luis Basin.
\n\n
Pliocene and younger basin deposition was accommodated along predominantly north-trending fault-bounded grabens and is preserved as poorly exposed fault scarps that cut lava flows of Ute Mountain volcano, north of the map area. The Servilleta Basalt and younger surficial deposits record largely down-to-east basinward displacement. Faults are identified with varying confidence levels in the map area. Recognizing and mapping faults developed near the surface in relatively young, brittle volcanic rocks is difficult because: (1) they tend to form fractured zones tens of meters wide rather than discrete fault planes, (2) the relative youth of the deposits has resulted in only modest displacements on most faults, and (3) some of the faults may have significant strike-slip components that do not result in large vertical offsets that are readily apparent in offset of sub-horizontal contacts. Those faults characterized as “certain” either have distinct offset of map units or had slip planes that were directly observed in the field. Lineaments defined from magnetic anomalies form an additional constraint on potential fault locations.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sim3283","usgsCitation":"Thompson, R.A., Turner, K.J., Shroba, R.R., Cosca, M.A., Ruleman, C., Lee, J.P., and Brandt, T.R., 2014, Geologic map of the Sunshine 7.5' quadrangle, Taos County, New Mexico: U.S. Geological Survey Scientific Investigations Map 3283, 1 Plate: 44.00 x 40.00 inches; Downloads Directory, https://doi.org/10.3133/sim3283.","productDescription":"1 Plate: 44.00 x 40.00 inches; Downloads Directory","onlineOnly":"Y","additionalOnlineFiles":"Y","ipdsId":"IP-038231","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":282850,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sim3283.jpg"},{"id":282849,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/sim/3283/downloads/"},{"id":282848,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/sim/3283/pdf/sim3283.pdf","text":"Map","size":"58.2 MB","linkFileType":{"id":1,"text":"pdf"},"description":"SIM 3283 Map"},{"id":282847,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sim/3283/"},{"id":398949,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_99622.htm"}],"scale":"24000","country":"United States","state":"New Mexico","county":"Taos County","otherGeospatial":"Sunshine 7.5' quadrangle","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -105.75,\n 36.75\n ],\n [\n -105.625,\n 36.75\n ],\n [\n -105.625,\n 36.875\n ],\n [\n -105.75,\n 36.875\n ],\n [\n -105.75,\n 36.75\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5d20e4b0b290850fae8f","contributors":{"authors":[{"text":"Thompson, Ren A. 0000-0002-3044-3043 rathomps@usgs.gov","orcid":"https://orcid.org/0000-0002-3044-3043","contributorId":1265,"corporation":false,"usgs":true,"family":"Thompson","given":"Ren","email":"rathomps@usgs.gov","middleInitial":"A.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":488997,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Turner, Kenzie J. 0000-0002-4940-3981 kturner@usgs.gov","orcid":"https://orcid.org/0000-0002-4940-3981","contributorId":496,"corporation":false,"usgs":true,"family":"Turner","given":"Kenzie","email":"kturner@usgs.gov","middleInitial":"J.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":488995,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Shroba, Ralph R. 0000-0002-2664-1813 rshroba@usgs.gov","orcid":"https://orcid.org/0000-0002-2664-1813","contributorId":1266,"corporation":false,"usgs":true,"family":"Shroba","given":"Ralph","email":"rshroba@usgs.gov","middleInitial":"R.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":488998,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Cosca, Michael A. 0000-0002-0600-7663 mcosca@usgs.gov","orcid":"https://orcid.org/0000-0002-0600-7663","contributorId":1000,"corporation":false,"usgs":true,"family":"Cosca","given":"Michael","email":"mcosca@usgs.gov","middleInitial":"A.","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":488996,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Ruleman, Chester A.","contributorId":41533,"corporation":false,"usgs":true,"family":"Ruleman","given":"Chester A.","affiliations":[],"preferred":false,"id":489001,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lee, John P. jplee@usgs.gov","contributorId":3291,"corporation":false,"usgs":true,"family":"Lee","given":"John","email":"jplee@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":489000,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Brandt, Theodore R. 0000-0002-7862-9082 tbrandt@usgs.gov","orcid":"https://orcid.org/0000-0002-7862-9082","contributorId":1267,"corporation":false,"usgs":true,"family":"Brandt","given":"Theodore","email":"tbrandt@usgs.gov","middleInitial":"R.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":488999,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70094967,"text":"70094967 - 2014 - Production of hybrids between western gray wolves and western coyotes","interactions":[],"lastModifiedDate":"2018-01-04T11:36:40","indexId":"70094967","displayToPublicDate":"2014-02-26T10:22:00","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2980,"text":"PLoS ONE","active":true,"publicationSubtype":{"id":10}},"title":"Production of hybrids between western gray wolves and western coyotes","docAbstract":"Using artificial insemination we attempted to produce hybrids between captive, male, western, gray wolves (Canis lupus) and female, western coyotes (Canis latrans) to determine whether their gametes would be compatible and the coyotes could produce and nurture offspring. The results contribute new information to an ongoing controversy over whether the eastern wolf (Canis lycaon) is a valid unique species that could be subject to the U. S. Endangered Species Act. Attempts with transcervically deposited wolf semen into nine coyotes over two breeding seasons yielded three coyote pregnancies. One coyote ate her pups, another produced a resorbed fetus and a dead fetus by C-section, and the third produced seven hybrids, six of which survived. These results show that, although it might be unlikely for male western wolves to successfully produce offspring with female western coyotes under natural conditions, western-gray-wolf sperm are compatible with western-coyote ova and that at least one coyote could produce and nurture hybrid offspring. This finding in turn demonstrates that gamete incompatibility would not have prevented western, gray wolves from inseminating western coyotes and thus producing hybrids with coyote mtDNA, a claim that counters the view that the eastern wolf is a separate species. However, some of the difficulties experienced by the other inseminated coyotes tend to temper that finding and suggest that more experimentation is needed, including determining the behavioral and physical compatibility of western gray wolves copulating with western coyotes. Thus although our study adds new information to the controversy, it does not settle it. Further study is needed to determine whether the putative Canis lycaon is indeed a unique species.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"PLoS ONE","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Public Library of Science","doi":"10.1371/journal.pone.0088861","usgsCitation":"Mech, L.D., Christensen, B., Asa, C., Callahan, M., and Young, J.K., 2014, Production of hybrids between western gray wolves and western coyotes: PLoS ONE, v. 9, no. 2, 7 p., https://doi.org/10.1371/journal.pone.0088861.","productDescription":"7 p.","onlineOnly":"Y","ipdsId":"IP-052381","costCenters":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"links":[{"id":473165,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1371/journal.pone.0088861","text":"Publisher Index Page"},{"id":282814,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282803,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1371/journal.pone.0088861"}],"volume":"9","issue":"2","noUsgsAuthors":false,"publicationDate":"2014-02-25","publicationStatus":"PW","scienceBaseUri":"5351705be4b05569d805a375","contributors":{"authors":[{"text":"Mech, L. David 0000-0003-3944-7769 david_mech@usgs.gov","orcid":"https://orcid.org/0000-0003-3944-7769","contributorId":2518,"corporation":false,"usgs":true,"family":"Mech","given":"L.","email":"david_mech@usgs.gov","middleInitial":"David","affiliations":[{"id":480,"text":"Northern Prairie Wildlife Research Center","active":true,"usgs":true}],"preferred":true,"id":491001,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Christensen, Bruce W.","contributorId":93381,"corporation":false,"usgs":true,"family":"Christensen","given":"Bruce W.","affiliations":[],"preferred":false,"id":491005,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Asa, Cheryl S.","contributorId":74673,"corporation":false,"usgs":true,"family":"Asa","given":"Cheryl S.","affiliations":[],"preferred":false,"id":491004,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Callahan, Margaret","contributorId":16317,"corporation":false,"usgs":false,"family":"Callahan","given":"Margaret","email":"","affiliations":[],"preferred":false,"id":491002,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Young, Julie K.","contributorId":69473,"corporation":false,"usgs":true,"family":"Young","given":"Julie","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":491003,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70094938,"text":"70094938 - 2014 - The Snowmastodon Project","interactions":[],"lastModifiedDate":"2014-12-12T14:45:01","indexId":"70094938","displayToPublicDate":"2014-02-26T10:16:00","publicationYear":"2014","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":"The Snowmastodon Project","docAbstract":"Studies of terrestrial biotic and environmental dynamics of the last interglacial period, Marine Oxygen Isotope Stage (MIS) 5, provide insight into the effects of long-term climate change on Pleistocene ecosystems. In North America, however, there are relatively few fossil sites that definitively date to MIS 5. Even fewer contain multiple ecosystem components (vertebrates, invertebrates, plants) that have been studied in detail, and none are located at high elevation. Thus, our view of North American ecosystems during MIS 5 is, at best, an incomplete composite view, and alpine ecosystems are entirely undocumented. The Ziegler Reservoir fossil site allows us to begin filling these gaps. Discovered on October 14, 2010 by a construction crew while enlarging a small reservoir near Snowmass Village, Colorado (USA), the site is situated high in the Rocky Mountains at an elevation of ~ 2705 m. Initial excavations exposed a series of stacked fossil ecosystems, including abundant faunal and floral components. Subsequent work revealed an exceptionally diverse biota composed of nearly 6000 large bones of late Pleistocene megafauna, including mastodons, mammoths, ground sloths, horses, camels, deer, bison, black bear, coyotes, and big horn sheep. This collection is complemented by more than 200 bones from at least 40 species of small animals including otters, muskrats, minks, rabbits, beavers, frogs, lizards, snakes, fish, and birds, and more than 20,000 salamander bones. Geomorphic evidence and multiple dating techniques show that the small, ridge-top basin containing the site was formed by a lateral lobe of a valley glacier that filled, and ultimately overtopped, the Snowmass Creek drainage during the Bull Lake glaciation (MIS 6). When the glacier receded, a lake that occupied the basin began to fill slowly with what is hypothesized to be eolian sediment and occasional input from slope failures of the impounding moraine. As sedimentation continued, the lake transformed first into a shallow pond, then a marsh, and later an alpine meadow. In all, the Ziegler Reservoir sedimentary record spans the time encompassed by the end of MIS 6, all of MIS 5 and MIS 4, and the earliest part of MIS 3. MIS 5e, which is considered to be the peak warmth of the last interglacial period, is especially well represented. Preservation of organic material at the Ziegler Reservoir fossil site is exceptional. Even after more than 100,000 years of burial, sedge and willow leaves were still green, mollusks and gastropods showed color, beetle parts remained iridescent, fossil conifer cones were intact, and an entire beach of 20-meter-long driftwood logs was found intact. The exquisite preservation allowed for detailed analysis of pollen, plant macrofossils, conifer cones, and fossil wood, as well as insects, chironomids, mollusks, ostracodes, and other invertebrates — all in addition to the spectacular faunal remains. This special volume of Quaternary Research represents a comprehensive scientific report of “The Snowmastodon Project,” as the investigations at the Ziegler Reservoir fossil site came to be known. Summarizing the work of scientists from more than 20 institutions, the volume details the environments in which the animals lived, provides insight into how they died, and forms the foundation of our understanding of alpine ecosystem dynamics during the last interglacial period in the Rocky Mountains.
","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Quaternary Research","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Elsevier","doi":"10.1016/j.yqres.2013.12.010","usgsCitation":"Johnson, K.R., Miller, I.M., and Pigati, J.S., 2014, The Snowmastodon Project: Quaternary Research, v. 82, no. 3, p. 473-476, https://doi.org/10.1016/j.yqres.2013.12.010.","productDescription":"4 p.","startPage":"473","endPage":"476","numberOfPages":"4","onlineOnly":"N","additionalOnlineFiles":"N","ipdsId":"IP-053492","costCenters":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"links":[{"id":282813,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282812,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.yqres.2013.12.010"}],"volume":"82","issue":"3","noUsgsAuthors":false,"publicationDate":"2017-01-20","publicationStatus":"PW","scienceBaseUri":"54dd2c6be4b08de9379b37c6","chorus":{"doi":"10.1016/j.yqres.2013.12.010","url":"http://dx.doi.org/10.1016/j.yqres.2013.12.010","publisher":"Cambridge University Press (CUP)","authors":"Johnson Kirk R., Miller Ian M., Pigati Jeffrey S., undefined undefined","journalName":"Quaternary Research","publicationDate":"11/2014"},"contributors":{"authors":[{"text":"Johnson, Kirk R.","contributorId":16877,"corporation":false,"usgs":true,"family":"Johnson","given":"Kirk","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":490994,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, Ian M. 0000-0002-3289-6337","orcid":"https://orcid.org/0000-0002-3289-6337","contributorId":41951,"corporation":false,"usgs":false,"family":"Miller","given":"Ian","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":490995,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pigati, Jeffery S.","contributorId":73907,"corporation":false,"usgs":true,"family":"Pigati","given":"Jeffery","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":490996,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70094946,"text":"70094946 - 2014 - Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon","interactions":[],"lastModifiedDate":"2016-07-18T21:48:48","indexId":"70094946","displayToPublicDate":"2014-02-26T09:52:00","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3773,"text":"Wildlife Monographs","active":true,"publicationSubtype":{"id":10}},"title":"Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon","docAbstract":"The federally threatened northern spotted owl (Strix occidentalis caurina) is the focus of intensive conservation efforts that have led to much forested land being reserved as habitat for the owl and associated wildlife species throughout the Pacific Northwest of the United States. Recently, however, a relatively new threat to spotted owls has emerged in the form of an invasive competitor: the congeneric barred owl (S. varia). As barred owls have rapidly expanded their populations into the entire range of the northern spotted owl, mounting evidence indicates that they are displacing, hybridizing with, and even killing spotted owls. The range expansion by barred owls into western North America has made an already complex conservation issue even more contentious, and a lack of information on the ecological relationships between the 2 species has hampered recovery efforts for northern spotted owls. We investigated spatial relationships, habitat use, diets, survival, and reproduction of sympatric spotted owls and barred owls in western Oregon, USA, during 2007–2009. Our overall objective was to determine the potential for and possible consequences of competition for space, habitat, and food between these previously allopatric owl species. Our study included 29 spotted owls and 28 barred owls that were radio-marked in 36 neighboring territories and monitored over a 24-month period. Based on repeated surveys of both species, the number of territories occupied by pairs of barred owls in the 745-km2 study area (82) greatly outnumbered those occupied by pairs of spotted owls (15). Estimates of mean size of home ranges and core-use areas of spotted owls (1,843 ha and 305 ha, respectively) were 2–4 times larger than those of barred owls (581 ha and 188 ha, respectively). Individual spotted and barred owls in adjacent territories often had overlapping home ranges, but interspecific space sharing was largely restricted to broader foraging areas in the home range with minimal spatial overlap among core-use areas. We used an information-theoretic approach to rank discrete-choice models representing alternative hypotheses about the influence of forest conditions, topography, and interspecific interactions on species-specific patterns of nighttime resource selection. Spotted owls spent a disproportionate amount of time foraging on steep slopes in ravines dominated by old (>120 yr) conifer trees. Barred owls used available forest types more evenly than spotted owls, and were most strongly associated with patches of large hardwood and conifer trees that occupied relatively flat areas along streams. Spotted and barred owls differed in the relative use of old conifer forest (greater for spotted owls) and slope conditions (steeper slopes for spotted owls), but we found no evidence that the 2 species differed in their use of young, mature, and riparian-hardwood forest types. Mean overlap in proportional use of different forest types between individual spotted owls and barred owls in adjacent territories was 81% (range = 30–99%). The best model of habitat use for spotted owls indicated that the relative probability of a location being used was substantially reduced if the location was within or in close proximity to a core-use area of a barred owl. We used pellet analysis and measures of food-niche overlap to determine the potential for dietary competition between spatially associated pairs of spotted owls and barred owls. We identified 1,223 prey items from 15 territories occupied by spotted owls and 4,299 prey items from 24 territories occupied by barred owls. Diets of both species were dominated by nocturnal mammals, but diets of barred owls included many terrestrial, aquatic, and diurnal prey species that were rare or absent in diets of spotted owls. Northern flying squirrels (Glaucomys sabrinus), woodrats (Neotoma fuscipes, N. cinerea), and lagomorphs (Lepus americanus, Sylvilagus bachmani) were primary prey for both owl species, accounting for 81% and 49% of total dietary biomass for spotted owls and barred owls, respectively. Mean dietary overlap between pairs of spotted and barred owls in adjacent territories was moderate (42%; range = 28–70%). Barred owls displayed demographic superiority over spotted owls; annual survival probability of spotted owls from known-fate analyses (0.81, SE = 0.05) was lower than that of barred owls (0.92, SE = 0.04), and pairs of barred owls produced an average of 4.4 times more young than pairs of spotted owls over a 3-year period. We found a strong, positive relationship between seasonal (6-month) survival probabilities of both species and the proportion of old (>120 yr) conifer forest within individual home ranges, which suggested that availability of old forest was a potential limiting factor in the competitive relationship between these 2 species. The annual number of young produced by spotted owls increased linearly with increasing distance from a territory center of a pair of barred owls, and all spotted owls that attempted to nest within 1.5 km of a nest used by barred owls failed to successfully produce young. We identified strong associations between the presence of barred owls and the behavior and fitness potential of spotted owls, as shown by changes in movements, habitat use, and reproductive output of spotted owls exposed to different levels of spatial overlap with territorial barred owls. When viewed collectively, our results support the hypothesis that interference competition with barred owls for territorial space can constrain the availability of critical resources required for successful recruitment and reproduction of spotted owls. Availability of old forests and associated prey species appeared to be the most strongly limiting factors in the competitive relationship between these species, indicating that further loss of these conditions can lead to increases in competitive pressure. Our findings have broad implications for the conservation of spotted owls, as they suggest that spatial heterogeneity in vital rates may not arise solely because of differences among territories in the quality or abundance of forest habitat, but also because of the spatial distribution of a newly established competitor. Experimental removal of barred owls could be used to test this hypothesis and determine whether localized control of barred owl numbers is an ecologically practical and socio-politically acceptable management tool to consider in conservation strategies for spotted owls.
Uncertainty about the effects of land use and climate on water movement in the unsaturated zone and on groundwater recharge rates can lead to uncertainty in water budgets used for groundwater-flow models. To better understand these effects, a cooperative study between the U.S. Geological Survey and the Central Platte Natural Resources District was initiated in 2007 to determine field-based estimates of recharge rates in selected land-use areas of the Central Platte Natural Resources District in Nebraska. Measured total water potential and unsaturated-zone profiles of tritium, chloride, nitrate as nitrogen, and bromide, along with groundwater-age dates, were used to evaluate water movement in the unsaturated zone and groundwater recharge rates in the central Platte River study area. Eight study sites represented an east-west precipitation contrast across the study area—four beneath groundwater-irrigated cropland (sites 2, 5, and 6 were irrigated corn and site 7 was irrigated alfalfa/corn rotation), three beneath rangeland (sites 1, 4, and 8), and one beneath nonirrigated cropland, or dryland (site 3).
\nMeasurements of transient vertical gradients in total water potential indicated that periodic wetting fronts reached greater mean maximum depths beneath the irrigated sites than beneath the rangeland sites, in part, because of the presence of greater and constant antecedent moisture. Beneath the rangeland sites, greater temporal variation in antecedent moisture and total water potential existed and was, in part, likely a result of local precipitation and evapotranspiration. Moreover, greater variability was noticed in the total water potential profiles beneath the western sites than the corresponding eastern sites, which was attributed to less mean annual precipitation in the west.
\nThe depth of the peak post-bomb tritium concentration or the interface between the pre-bomb/post-bomb tritium, along with a tritium mass balance, within sampled soil profiles were used to estimate water fluxes in the unsaturated zone at three of the eight study sites: site 2 (irrigated), site 3 (dryland), and site 8 (rangeland). Estimates for recharge were about 68 millimeters per year [(mm/yr), post-bomb peak], 133 to 159 mm/yr (tritium interface), and 137 mm/yr (mass balance) at site 2 (irrigated); about 63 mm/yr (tritium interface) and 12 mm/yr (mass balance) at site 3 (dryland); and about 53 mm/yr (tritium interface) and 10 mm/yr (mass balance) at site 8 (rangeland). Recharge values from the mass balance at site 2 were more than an order of magnitude greater than recharge values at site 3, suggesting irrigation is an important control on water movement through the unsaturated zone. For the remaining five sites, the post-bomb tritium had flushed through the system and recharge was considered modern (within 10 years of sampling).
\nThe chloride mass-balance method was used to determine water fluxes below the root zone (less than 2 meters below land surface) at the rangeland sites: sites 1, 4, and 8. At these rangeland sites, water fluxes ranged from 1.8 to 96 mm/yr at site 1, 1.1 to 9.6 mm/yr at site 4, and 1.1 to 68 mm/yr at site 8, with mean rates of 21, 4.3, and 13 mm/yr, respectively. Site 1 had a greater mean water flux, which was consistent with the greater precipitation in the east than at site 8 in the west. Chloride mass balance was not calculated at the irrigated and dryland sites because of uncertainty about additional sources of chloride.
\nConcentrations of nitrate as nitrogen in pore water in the unsaturated zone were larger beneath the irrigated and dryland (agricultural) sites compared with the rangeland sites. The larger concentrations at the agricultural sites are consistent with the application of nitrogen fertilizer at the agricultural sites and no substantial accumulation at the rangeland sites.\nThe shape of the nitrate as nitrogen and chloride concentration\nprofiles at site 1 (rangeland) indicate a reasonably larger and\nmore consistent water flux in the UZ than beneath the other\ntwo rangeland sites (sites 4 or 8). Excluding site 7, the general\nshape of the nitrate as nitrogen profiles was similar beneath\nthe agricultural sites and supports the estimates of water\nmovement and recharge rates determined from the tritium and\nchloride methods.
\nMovement of bromide through the unsaturated zone\nindicated greater water fluxes are found beneath irrigated lands\nthan beneath rangeland. Bromide profiles in the unsaturated\nzone, determined from center of mass and peak displacement\nmethods, document water fluxes ranged from 58\nto 394\nmm/yr beneath irrigated sites and 9 to 201 mm/yr beneath rangeland\nsites. Water-flux estimates from the potassium bromide tests at\nmost sites did not represent overall recharge rates because the\nbromide remained primarily in the root zone.
\nApparent groundwater age was used to determine the\ngroundwater residence time at the eight sites and to estimate recharge rates. Groundwater ages in the study area\nranged from old water (defined here as groundwater that was\nrecharged more than 50 years ago) to modern (defined here\nas groundwater that has recharged within the past 10 years).\nGroundwater ages indicated that the shallow monitoring wells\ngenerally had younger residence times, whereas the deeper\nmonitoring wells generally had the older residence times.\nGroundwater dates from the shallowest monitoring wells were\nused to determine recharge rates at the water table. These\nrates generally were similar to recharge rates determined from\ntritium and chloride mass-balance methods. Groundwater\nrecharge rates generally increased with well depth, and the\ndeeper monitoring wells likely do not represent local recharge\nconditions but recharge from a regional flow system that\nreceives recharge from distant sources.
\nOverall, these data generally indicate that water movement within the unsaturated zone primarily is affected by spatial contrasts in mean annual precipitation and by the land use\nor land cover. The eight unsaturated-zone sites each generated\nunique, valuable datasets that likely will improve the understanding of water movement and recharge rates in the central\nPlatte River valley.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sir20145008","collaboration":"Prepared in cooperation with the Central Platte Natural Resources District","usgsCitation":"Steele, G.V., Gurdak, J., and Hobza, C.M., 2014, Water movement through the unsaturated zone of the High Plains Aquifer in the Central Platte Natural Resources District, Nebraska, 2008-12: U.S. Geological Survey Scientific Investigations Report 2014-5008, Report: x, 54 p., https://doi.org/10.3133/sir20145008.","productDescription":"Report: x, 54 p.","onlineOnly":"Y","ipdsId":"IP-045594","costCenters":[{"id":464,"text":"Nebraska Water Science Center","active":true,"usgs":true}],"links":[{"id":282796,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sir/2014/5008/pdf/sir2014-5008.pdf"},{"id":282797,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/sir/2014/5008/downloads/Tables.xlsx"},{"id":282798,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/sir20145008.jpg"},{"id":282791,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sir/2014/5008/"}],"scale":"1000000","projection":"Universal Transverse Mercator","datum":"NAD 83","country":"United States","state":"Nebraska","otherGeospatial":"Central Platte Natural Resources District","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -100.0,40.5 ], [ -100.0,41.0 ], [ -98.5,41.0 ], [ -98.5,40.5 ], [ -100.0,40.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd7c15e4b0b2908510e880","contributors":{"authors":[{"text":"Steele, Gregory V. gvsteele@usgs.gov","contributorId":783,"corporation":false,"usgs":true,"family":"Steele","given":"Gregory","email":"gvsteele@usgs.gov","middleInitial":"V.","affiliations":[{"id":464,"text":"Nebraska Water Science Center","active":true,"usgs":true}],"preferred":true,"id":489561,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gurdak, Jason J.","contributorId":65125,"corporation":false,"usgs":true,"family":"Gurdak","given":"Jason J.","affiliations":[],"preferred":false,"id":489563,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Hobza, Christopher M. 0000-0002-6239-934X cmhobza@usgs.gov","orcid":"https://orcid.org/0000-0002-6239-934X","contributorId":2393,"corporation":false,"usgs":true,"family":"Hobza","given":"Christopher","email":"cmhobza@usgs.gov","middleInitial":"M.","affiliations":[{"id":464,"text":"Nebraska Water Science Center","active":true,"usgs":true}],"preferred":true,"id":489562,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70073492,"text":"ofr20141007 - 2014 - Capacitively coupled and direct-current resistivity surveys of selected reaches of Cozad, Thirty-Mile, Orchard-Alfalfa, Kearney, and Outlet Canals in Nebraska, 2012-13","interactions":[],"lastModifiedDate":"2014-02-26T09:11:38","indexId":"ofr20141007","displayToPublicDate":"2014-02-26T07:00:00","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2014-1007","title":"Capacitively coupled and direct-current resistivity surveys of selected reaches of Cozad, Thirty-Mile, Orchard-Alfalfa, Kearney, and Outlet Canals in Nebraska, 2012-13","docAbstract":"Understanding the spatial characteristics of leakage from canals is critical to effectively managing and utilizing water resources for irrigation and hydroelectric purposes. Canal leakage in some parts of Nebraska is the primary source of water for groundwater recharge and helps maintain the base flow of streams. Because surface-water supplies depend on the streamflow of the Platte River and the available water stored in upstream reservoirs, water managers seek to minimize conveyance losses, which can include canal leakage. The U.S. Geological Survey, in cooperation with the Central Platte Natural Resources District and Nebraska Public Power District, used capacitively coupled (CC) and direct-current (DC) resistivity techniques for continuous resistivity profiling to map near-surface lithologies near and underlying the Cozad, Thirty-Mile, Orchard-Alfalfa, Kearney, and Outlet Canals. Approximately 84 kilometers (km) of CC-resistivity data were collected along the five canals.
\nThe CC-resistivity data were compared with results from continuous sediment cores and electrical conductivity logs. Generally, the highest resistivities were recorded at the upstream reaches of the Cozad, Thirty-Mile, and Orchard-Alfalfa canals where flood-plain deposits of silt and clay mantle coarser channel deposits of sand and gravel. The finer grained deposits gradually thicken with increasing distance away from the Platte River. Consequently, for many surveyed reaches the thickness of fine-grained deposits exceeded the 8-meter depth of investigation.
\nA detailed geophysical investigation along a 5-km reach of the Outlet Canal southwest of North Platte, Nebraska, used CC and DC resistivity to examine the condition of a compacted-core bank structure and characterized other potential controls on areas of focused seepage. CC-resistivity data, collected along the 5-km study reach, were compared with continuous sediment cores and DC-resistivity data collected near a selected seep near Outlet Canal mile post 15.55 along 5 separate profiles. DC-resistivity results were compared to a schematic cross section of the Outlet Canal north embankment that include the original surfaces and modifications to the compacted-core bank structure.
\nAlong the canal road south line, there is a transition from high resistivity at land surface to much lower resistivity near the estimated depth of the northern slope of the original compacted-core bank; however, the surveyed elevation of the water surface in the canal also is at this elevation. Along the canal road north line, there is a transition from high resistivity near land surface to lower resistivity at depth. Although the transition is rapid near the estimated depth of the first-modified bank slope, it also is coincident with the groundwater level measured in piezometer PZ-4. Currently (2013), it is unknown if the indicated changes in resistivity at these elevations was the effect of saturation of the underlying sediments or caused by the compacted-core bank.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr20141007","collaboration":"Prepared in cooperation with the Central Platte Natural Resources District and Nebraska Public Power District","usgsCitation":"Hobza, C.M., Burton, B., Lucius, J.E., and Tompkins, R.E., 2014, Capacitively coupled and direct-current resistivity surveys of selected reaches of Cozad, Thirty-Mile, Orchard-Alfalfa, Kearney, and Outlet Canals in Nebraska, 2012-13: U.S. Geological Survey Open-File Report 2014-1007, Report: vi, 48 p., https://doi.org/10.3133/ofr20141007.","productDescription":"Report: vi, 48 p.","onlineOnly":"Y","ipdsId":"IP-045699","costCenters":[{"id":464,"text":"Nebraska Water Science Center","active":true,"usgs":true}],"links":[{"id":282795,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20141007.jpg"},{"id":282794,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/of/2014/1007/downloads/"},{"id":282790,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2014/1007/"},{"id":282793,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2014/1007/pdf/of2014-1007.pdf"}],"projection":"Lambert Conformal Conic","datum":"NAD 83","country":"United States","state":"Nebraska","city":"Cozad;Kearney","otherGeospatial":"Orchard Alfalfa Canal;Thirty Mile Canal","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -101.0,40.5 ], [ -101.0,41.3 ], [ -99.0,41.3 ], [ -99.0,40.5 ], [ -101.0,40.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5023e4b0b290850f3273","contributors":{"authors":[{"text":"Hobza, Christopher M. 0000-0002-6239-934X cmhobza@usgs.gov","orcid":"https://orcid.org/0000-0002-6239-934X","contributorId":2393,"corporation":false,"usgs":true,"family":"Hobza","given":"Christopher","email":"cmhobza@usgs.gov","middleInitial":"M.","affiliations":[{"id":464,"text":"Nebraska Water Science Center","active":true,"usgs":true}],"preferred":true,"id":488804,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Burton, Bethany L. 0000-0001-5011-7862 blburton@usgs.gov","orcid":"https://orcid.org/0000-0001-5011-7862","contributorId":1341,"corporation":false,"usgs":true,"family":"Burton","given":"Bethany L.","email":"blburton@usgs.gov","affiliations":[{"id":35995,"text":"Geology, Geophysics, and Geochemistry Science Center","active":true,"usgs":true}],"preferred":false,"id":488803,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lucius, Jeffrey E. lucius@usgs.gov","contributorId":817,"corporation":false,"usgs":true,"family":"Lucius","given":"Jeffrey","email":"lucius@usgs.gov","middleInitial":"E.","affiliations":[],"preferred":true,"id":488802,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tompkins, Ryan E.","contributorId":20851,"corporation":false,"usgs":true,"family":"Tompkins","given":"Ryan","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":488805,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70074472,"text":"sim3287 - 2014 - Geologic and geophysical maps of the eastern three-fourths of the Cambria 30' x 60' quadrangle, central California Coast Ranges","interactions":[],"lastModifiedDate":"2023-05-26T13:44:29.25989","indexId":"sim3287","displayToPublicDate":"2014-02-25T12:49:00","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":333,"text":"Scientific Investigations Map","code":"SIM","onlineIssn":"2329-132X","printIssn":"2329-1311","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"3287","title":"Geologic and geophysical maps of the eastern three-fourths of the Cambria 30' x 60' quadrangle, central California Coast Ranges","docAbstract":"The Cambria 30´ x 60´ quadrangle comprises southwestern Monterey County and northwestern San Luis Obispo County. The land area includes rugged mountains of the Santa Lucia Range extending from the northwest to the southeast part of the map; the southern part of the Big Sur coast in the northwest; broad marine terraces along the southwest coast; and broadvalleys, rolling hills, and modest mountains in the northeast.
\nThis report contains geologic, gravity anomaly, and aeromagnetic anomaly maps of the eastern three-fourths of the 1:100,000-scale Cambria quadrangle and the associated geologic and geophysical databases (ArcMap databases), as well as complete descriptions of the geologic map units and the structural relations in the mapped area. A cross section is based on both the geologic map and potential-field geophysical data.
\nThe maps are presented as an interactive, multilayer PDF, rather than more traditional pre-formatted map-sheet PDFs. Various geologic, geophysical, paleontological, and base map elements are placed on separate layers, which allows the user to combine elements interactively to create map views beyond the traditional map sheets. Four traditional map sheets (geologic map, gravity map, aeromagnetic map, paleontological locality map) are easily compiled by choosing the associated data layers or by choosing the desired map under Bookmarks.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/sim3287","usgsCitation":"Graymer, R., Langenheim, V., Roberts, M.A., and McDougall, K., 2014, Geologic and geophysical maps of the eastern three-fourths of the Cambria 30' x 60' quadrangle, central California Coast Ranges: U.S. Geological Survey Scientific Investigations Map 3287, Pamphlet: iii, 47 p.; 1 Plate: 44.0 x 32.0 inches; Readme; Metadata; Database, https://doi.org/10.3133/sim3287.","productDescription":"Pamphlet: iii, 47 p.; 1 Plate: 44.0 x 32.0 inches; Readme; Metadata; Database","numberOfPages":"51","onlineOnly":"Y","additionalOnlineFiles":"Y","ipdsId":"IP-040960","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":282774,"rank":7,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":398951,"rank":8,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_99614.htm"},{"id":282768,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/sim/3287/"},{"id":282769,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/sim/3287/pdf/SIM3287_map.pdf"},{"id":282771,"rank":6,"type":{"id":20,"text":"Read Me"},"url":"https://pubs.usgs.gov/sim/3287/pdf/SIM3287_readme.pdf"},{"id":282770,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/sim/3287/pdf/SIM3287_pamphlet.pdf"},{"id":282772,"rank":4,"type":{"id":16,"text":"Metadata"},"url":"https://pubs.usgs.gov/sim/3287/downloads/SIM3287_metadata.txt"},{"id":282773,"rank":1,"type":{"id":7,"text":"Companion Files"},"url":"https://pubs.usgs.gov/sim/3287/downloads/SIM3287_database.zip"}],"scale":"100000","projection":"Universal Transverse Mercator projection","datum":"North American Datum 1983","country":"United States","state":"California","county":"Monterey County, San Luis Obispo County","otherGeospatial":"Big Sur, California Coast Ranges","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -121.625,35.5 ], [ -121.625,36.0 ], [ -121.0,36.0 ], [ -121.0,35.5 ], [ -121.625,35.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd5b98e4b0b290850fa008","contributors":{"authors":[{"text":"Graymer, R. W.","contributorId":21174,"corporation":false,"usgs":true,"family":"Graymer","given":"R. W.","affiliations":[],"preferred":false,"id":489593,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Langenheim, V.E. 0000-0003-2170-5213","orcid":"https://orcid.org/0000-0003-2170-5213","contributorId":54956,"corporation":false,"usgs":true,"family":"Langenheim","given":"V.E.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":489594,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Roberts, M. A.","contributorId":63720,"corporation":false,"usgs":true,"family":"Roberts","given":"M.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":489595,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McDougall, Kristin 0000-0002-8788-3664","orcid":"https://orcid.org/0000-0002-8788-3664","contributorId":85610,"corporation":false,"usgs":true,"family":"McDougall","given":"Kristin","affiliations":[],"preferred":false,"id":489596,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70094785,"text":"70094785 - 2014 - Factors affecting the movement and persistence of nitrate and pesticides in the surficial and upper Floridan aquifers in two agricultural areas in the southeastern United States","interactions":[],"lastModifiedDate":"2014-02-25T10:19:16","indexId":"70094785","displayToPublicDate":"2014-02-25T10:10:00","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1534,"text":"Environmental Earth Sciences","active":true,"publicationSubtype":{"id":10}},"title":"Factors affecting the movement and persistence of nitrate and pesticides in the surficial and upper Floridan aquifers in two agricultural areas in the southeastern United States","docAbstract":"Differences in the degree of confinement, redox conditions, and dissolved organic carbon (DOC) are the main factors that control the persistence of nitrate and pesticides in the Upper Floridan aquifer (UFA) and overlying surficial aquifer beneath two agricultural areas in the southeastern US. Groundwater samples were collected multiple times from 66 wells during 1993–2007 in a study area in southwestern Georgia (ACFB) and from 48 wells in 1997–98 and 2007–08 in a study area in South Carolina (SANT) as part of the US Geological Survey National Water-Quality Assessment Program. In the ACFB study area, where karst features are prevalent, elevated nitrate-N concentrations in the oxic unconfined UFA (median 2.5 mg/L) were significantly (p = 0.03) higher than those in the overlying oxic surficial aquifer (median 1.5 mg/L). Concentrations of atrazine and deethylatrazine (DEA; the most frequently detected pesticide and degradate) were higher in more recent groundwater samples from the ACFB study area than in samples collected prior to 2000. Conversely, in the SANT study area, nitrate-N concentrations in the UFA were mostly <0.06 mg/L, resulting from anoxic conditions and elevated DOC concentrations that favored denitrification. Although most parts of the partially confined UFA in the SANT study area were anoxic or had mixed redox conditions, water from 28 % of the sampled wells was oxic and had low DOC concentrations. Based on the groundwater age information, nitrate concentrations reflect historic fertilizer N usage in both the study areas, but with a lag time of about 15–20 years. Simulated responses to future management scenarios of fertilizer N inputs indicated that elevated nitrate-N concentrations would likely persist in oxic parts of the surficial aquifer and UFA for decades even with substantial decreases in fertilizer N inputs over the next 40 years.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Earth Sciences","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Springer-Verlag","publisherLocation":"Berlin","doi":"10.1007/s12665-013-2657-8","usgsCitation":"Katz, B., Berndt, M.P., and Crandall, C.A., 2014, Factors affecting the movement and persistence of nitrate and pesticides in the surficial and upper Floridan aquifers in two agricultural areas in the southeastern United States: Environmental Earth Sciences, v. 71, no. 6, p. 2779-2795, https://doi.org/10.1007/s12665-013-2657-8.","productDescription":"17 p.","startPage":"2779","endPage":"2795","numberOfPages":"17","ipdsId":"IP-039543","costCenters":[{"id":288,"text":"Florida Water Science Center-Tallahassee","active":false,"usgs":true}],"links":[{"id":282734,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282708,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s12665-013-2657-8"}],"country":"United States","state":"Florida;Georgia;South Carolina","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -89.21,28.69 ], [ -89.21,34.03 ], [ -78.64,34.03 ], [ -78.64,28.69 ], [ -89.21,28.69 ] ] ] } } ] }","volume":"71","issue":"6","noUsgsAuthors":false,"publicationDate":"2013-07-19","publicationStatus":"PW","scienceBaseUri":"53517039e4b05569d805a1fe","contributors":{"authors":[{"text":"Katz, B. G.","contributorId":82702,"corporation":false,"usgs":true,"family":"Katz","given":"B. G.","affiliations":[],"preferred":false,"id":490903,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Berndt, M. P.","contributorId":74761,"corporation":false,"usgs":true,"family":"Berndt","given":"M.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":490902,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Crandall, C. A.","contributorId":93943,"corporation":false,"usgs":true,"family":"Crandall","given":"C.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":490904,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70094775,"text":"70094775 - 2014 - Terrestrial carbon is a resource, but not a subsidy, for lake zooplankton","interactions":[],"lastModifiedDate":"2014-05-29T14:35:45","indexId":"70094775","displayToPublicDate":"2014-02-25T09:19:00","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1465,"text":"Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Terrestrial carbon is a resource, but not a subsidy, for lake zooplankton","docAbstract":"Inputs of terrestrial organic carbon (t-OC) into lakes are often considered a resource subsidy for aquatic consumer production. Although there is evidence that terrestrial carbon can be incorporated into the tissues of aquatic consumers, its ability to enhance consumer production has been debated. Our research aims to evaluate the net effect of t-OC input on zooplankton. We used a survey of zooplankton production and resource use in ten lakes along a naturally occurring gradient of t-OC concentration to address these questions. Total and group-specific zooplankton production was negatively related to t-OC. Residual variation in zooplankton production that was not explained by t-OC was negatively related to terrestrial resource use (allochthony) by zooplankton. These results challenge the designation of terrestrial carbon as a resource subsidy; rather, the negative effect of reduced light penetration on the amount of suitable habitat and the low resource quality of t-OC appear to diminish zooplankton production. Our findings suggest that ongoing continental-scale increases in t-OC concentrations of lakes will likely have negative impacts on the productivity of aquatic food webs.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Ecological Society of America","doi":"10.1890/13-1586.1","usgsCitation":"Kelly, P., Solomon, C.T., Weidel, B., and Jones, S., 2014, Terrestrial carbon is a resource, but not a subsidy, for lake zooplankton: Ecology, v. 95, no. 5, p. 1236-1242, https://doi.org/10.1890/13-1586.1.","productDescription":"7 p.","startPage":"1236","endPage":"1242","numberOfPages":"7","ipdsId":"IP-050789","costCenters":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"links":[{"id":473166,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://figshare.com/articles/journal_contribution/Terrestrial_carbon_is_a_resource_but_not_a_subsidy_for_lake_zooplankton/24836145","text":"Publisher Index Page"},{"id":282729,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282727,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1890/13-1586.1"}],"country":"United States","state":"Michigan;Wisconsin","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -89.587076,46.179765 ], [ -89.587076,46.269929 ], [ -89.431892,46.269929 ], [ -89.431892,46.179765 ], [ -89.587076,46.179765 ] ] ] } } ] }","volume":"95","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53517066e4b05569d805a3d9","contributors":{"authors":[{"text":"Kelly, Patrick T.","contributorId":69059,"corporation":false,"usgs":true,"family":"Kelly","given":"Patrick T.","affiliations":[],"preferred":false,"id":490887,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Solomon, Christopher T.","contributorId":34014,"corporation":false,"usgs":false,"family":"Solomon","given":"Christopher","email":"","middleInitial":"T.","affiliations":[{"id":6646,"text":"McGill University","active":true,"usgs":false}],"preferred":false,"id":490886,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Weidel, Brian 0000-0001-6095-2773 bweidel@usgs.gov","orcid":"https://orcid.org/0000-0001-6095-2773","contributorId":2485,"corporation":false,"usgs":true,"family":"Weidel","given":"Brian","email":"bweidel@usgs.gov","affiliations":[{"id":324,"text":"Great Lakes Science Center","active":true,"usgs":true}],"preferred":true,"id":490884,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jones, Stuart E.","contributorId":22222,"corporation":false,"usgs":false,"family":"Jones","given":"Stuart E.","affiliations":[{"id":6966,"text":"Department of Biological Sciences, University of Notre Dame","active":true,"usgs":false}],"preferred":false,"id":490885,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70095418,"text":"70095418 - 2014 - In vivo retention of ingested Au NPs by Daphnia magna: No evidence for trans-epithelial alimentary uptake","interactions":[],"lastModifiedDate":"2018-09-14T16:42:13","indexId":"70095418","displayToPublicDate":"2014-02-25T08:57:54","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1226,"text":"Chemosphere","active":true,"publicationSubtype":{"id":10}},"title":"In vivo retention of ingested Au NPs by Daphnia magna: No evidence for trans-epithelial alimentary uptake","docAbstract":"In vivo studies with Daphnia magna remain inconclusive as to whether engineered nanoparticles (NPs) are internalized into tissues after ingestion. Here we used a three-pronged approach to study the in vivo retention and efflux kinetics of 20 nm citrate stabilized Au NPs ingested by this key aquatic species. Daphnids were exposed to suspended particles (600 μg L−1) for 5 h after which they were depurated for 24 h in clean water containing algae. Light microscopy was used to follow the passage of Au NPs through the gastrointestinal tract, Au body burdens were determined by ICP-MS (inductively coupled plasma mass spectrometry), and transmission electron microscopy (TEM) was used to examine the presence and distribution of Au NPs in tissues. Results revealed that the elimination of Au NPs was bi-phasic. The fast elimination phase lasted <1 h and the rate constant at which Au (of Au NPs) was eliminated was 1.12 ± 0.34 h−1 (±SE) which accounted for ∼75% of the ingested Au. The remaining ∼25% of the ingested Au NPs was eliminated at a 100-fold slower rate. TEM analysis revealed that Au NPs in the midgut were in close proximity to the peritrophic membrane after 1 and 24 h of depuration. There were no observations of Au NP uptake at the microvilli. Thus, although Au NPs were retained in the gut lumen, there was no observable internalization into the gut epithelial cells. Similar to carbon nanotubes and CuO NPs, our findings indicate that in daphnids the in vivo retention of Au NPs does not necessarily result in their internalization.","language":"English","publisher":"Chemosphere","doi":"10.1016/j.chemosphere.2013.12.051","usgsCitation":"Khan, F.R., Kennaway, G.M., Croteau, M., Dybowska, A., Smith, B.D., Nogueira, A.J., Rainbow, P.S., Luoma, S.N., and Valsami-Jones, E., 2014, In vivo retention of ingested Au NPs by Daphnia magna: No evidence for trans-epithelial alimentary uptake: Chemosphere, v. 100, p. 97-104, https://doi.org/10.1016/j.chemosphere.2013.12.051.","productDescription":"8 p.","startPage":"97","endPage":"104","ipdsId":"IP-053139","costCenters":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":283200,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":283199,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.chemosphere.2013.12.051"}],"volume":"100","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5351706fe4b05569d805a455","contributors":{"authors":[{"text":"Khan, Farhan R.","contributorId":99464,"corporation":false,"usgs":true,"family":"Khan","given":"Farhan","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":491197,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kennaway, Gabrielle M.","contributorId":71879,"corporation":false,"usgs":true,"family":"Kennaway","given":"Gabrielle","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":491195,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Croteau, Marie-Noële","contributorId":22863,"corporation":false,"usgs":true,"family":"Croteau","given":"Marie-Noële","affiliations":[],"preferred":false,"id":491191,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dybowska, Agnieszka","contributorId":34041,"corporation":false,"usgs":true,"family":"Dybowska","given":"Agnieszka","affiliations":[],"preferred":false,"id":491193,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Smith, Brian D.","contributorId":103575,"corporation":false,"usgs":true,"family":"Smith","given":"Brian","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":491198,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Nogueira, Antonio J.A.","contributorId":58940,"corporation":false,"usgs":true,"family":"Nogueira","given":"Antonio","email":"","middleInitial":"J.A.","affiliations":[],"preferred":false,"id":491194,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Rainbow, Philip S.","contributorId":83025,"corporation":false,"usgs":true,"family":"Rainbow","given":"Philip","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":491196,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Luoma, Samuel N. 0000-0001-5443-5091 snluoma@usgs.gov","orcid":"https://orcid.org/0000-0001-5443-5091","contributorId":2287,"corporation":false,"usgs":true,"family":"Luoma","given":"Samuel","email":"snluoma@usgs.gov","middleInitial":"N.","affiliations":[{"id":438,"text":"National Research Program - Western Branch","active":true,"usgs":true}],"preferred":true,"id":491190,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Valsami-Jones, Eugenia","contributorId":26057,"corporation":false,"usgs":true,"family":"Valsami-Jones","given":"Eugenia","email":"","affiliations":[],"preferred":false,"id":491192,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":70094643,"text":"70094643 - 2014 - Mercury cycling in agricultural and managed wetlands: a synthesis of methylmercury production, hydrologic export, and bioaccumulation from an integrated field study","interactions":[],"lastModifiedDate":"2018-09-26T16:31:22","indexId":"70094643","displayToPublicDate":"2014-02-24T10:36:00","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3352,"text":"Science of the Total Environment","active":true,"publicationSubtype":{"id":10}},"title":"Mercury cycling in agricultural and managed wetlands: a synthesis of methylmercury production, hydrologic export, and bioaccumulation from an integrated field study","docAbstract":"With seasonal wetting and drying, and high biological productivity, agricultural wetlands (rice paddies) may enhance the conversion of inorganic mercury (Hg(II)) to methylmercury (MeHg), the more toxic, organic form that biomagnifies through food webs. Yet, the net balance of MeHg sources and sinks in seasonal wetland environments is poorly understood because it requires an annual, integrated assessment across biota, sediment, and water components. We examined a suite of wetlands managed for rice crops or wildlife during 2007–2008 in California's Central Valley, in an area affected by Hg contamination from historic mining practices. Hydrologic management of agricultural wetlands for rice, wild rice, or fallowed — drying for field preparation and harvest, and flooding for crop growth and post-harvest rice straw decay — led to pronounced seasonality in sediment and aqueous MeHg concentrations that were up to 95-fold higher than those measured concurrently in adjacent, non-agricultural permanently-flooded and seasonally-flooded wetlands. Flooding promoted microbial MeHg production in surface sediment of all wetlands, but extended water residence time appeared to preferentially enhance MeHg degradation and storage. When incoming MeHg loads were elevated, individual fields often served as a MeHg sink, rather than a source. Slow, horizontal flow of shallow water in the agricultural wetlands led to increased importance of vertical hydrologic fluxes, including evapoconcentration of surface water MeHg and transpiration-driven advection into the root zone, promoting temporary soil storage of MeHg. Although this hydrology limited MeHg export from wetlands, it also increased MeHg exposure to resident fish via greater in situ aqueous MeHg concentrations. Our results suggest that the combined traits of agricultural wetlands — slow-moving shallow water, manipulated flooding and drying, abundant labile plant matter, and management for wildlife — may enhance microbial methylation of Hg(II) and MeHg exposure to local biota, as well as export to downstream habitats during uncontrolled winter-flow events.","language":"English","publisher":"Elsevier","doi":"10.1016/j.scitotenv.2014.01.033","usgsCitation":"Windham-Myers, L., Fleck, J., Ackerman, J., Marvin-DiPasquale, M.C., Stricker, C.A., Heim, W.A., Bachand, P., Eagles-Smith, C.A., Gill, G., Stephenson, M., and Alpers, C.N., 2014, Mercury cycling in agricultural and managed wetlands: a synthesis of methylmercury production, hydrologic export, and bioaccumulation from an integrated field study: Science of the Total Environment, v. 484, p. 221-231, https://doi.org/10.1016/j.scitotenv.2014.01.033.","productDescription":"11 p.","startPage":"221","endPage":"231","numberOfPages":"11","ipdsId":"IP-052623","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":290,"text":"Forest and Rangeland Ecosystem Science Center","active":false,"usgs":true},{"id":438,"text":"National Research Program - 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Woody debris, particularly smaller diameter woody debris, plays a key role in maintaining ecosystem nutrient stores following disturbance. Understanding nutrient concentrations within woody debris is necessary for assessing the long-term nutrient balance consequences of altered woody debris retention, particularly in forests slated for use as bioenergy feedstocks. Nutrient concentrations in downed woody debris of various sizes, decay classes, and species were characterized within one such forest type, Populus tremuloides Michx.-dominated forests of northern Minnesota, USA. Nutrient concentrations differed significantly between size and decay classes and generally increased as decay progressed. Fine woody debris (≤ 7.5 cm diameter) had higher nutrient concentrations than coarse woody debris (> 7.5 cm diameter) for all nutrients examined except Na and Mn, and nutrient concentrations varied among species. Concentrations of N, Mn, Al, Fe, and Zn in coarse woody debris increased between one and three orders of magnitude, while K decreased by an order of magnitude with progressing decay. The variations in nutrient concentrations observed here underscore the complexity of woody debris nutrient stores in forested ecosystems and suggest that retaining fine woody debris at harvest may provide a potentially important source of nutrients following intensive removals of bioenergy feedstocks.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Silva Fennica","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"Finnish Society of Forest Science","doi":"10.14214/sf.962","usgsCitation":"Klockow, P.A., D’Amato, A.W., Bradford, J.B., and Fraver, S., 2014, Nutrient concentrations in coarse and fine woody debris of Populus tremuloides Michx.-dominated forests, northern Minnesota, USA: Silva Fennica, v. 48, no. 1, 24 p., https://doi.org/10.14214/sf.962.","productDescription":"24 p.","numberOfPages":"24","ipdsId":"IP-038982","costCenters":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"links":[{"id":473167,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.14214/sf.962","text":"Publisher Index Page"},{"id":282666,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":282651,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.14214/sf.962"}],"country":"United States","state":"Minnesota","county":"Saint Louis County","city":"Independence;Melrude;Orr","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -93.0966,46.6492 ], [ -93.0966,48.6316 ], [ -91.7893,48.6316 ], [ -91.7893,46.6492 ], [ -93.0966,46.6492 ] ] ] } } ] }","volume":"48","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53517058e4b05569d805a34b","contributors":{"authors":[{"text":"Klockow, Paul A.","contributorId":78222,"corporation":false,"usgs":true,"family":"Klockow","given":"Paul","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":490804,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"D’Amato, Anthony W.","contributorId":28140,"corporation":false,"usgs":false,"family":"D’Amato","given":"Anthony","email":"","middleInitial":"W.","affiliations":[{"id":6735,"text":"University of Vermont, Rubenstein School of Environment and Natural Resources","active":true,"usgs":false},{"id":13478,"text":"Department of Forest Resources, University of Minnesota, St. Paul, Minnesota (Correspondence to: russellm@umn.edu)","active":true,"usgs":false}],"preferred":false,"id":490803,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bradford, John B. 0000-0001-9257-6303 jbradford@usgs.gov","orcid":"https://orcid.org/0000-0001-9257-6303","contributorId":611,"corporation":false,"usgs":true,"family":"Bradford","given":"John","email":"jbradford@usgs.gov","middleInitial":"B.","affiliations":[{"id":568,"text":"Southwest Biological Science Center","active":true,"usgs":true}],"preferred":true,"id":490802,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fraver, Shawn","contributorId":91379,"corporation":false,"usgs":false,"family":"Fraver","given":"Shawn","email":"","affiliations":[{"id":7063,"text":"University of Maine","active":true,"usgs":false}],"preferred":false,"id":490805,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70095190,"text":"70095190 - 2014 - Variability in seroprevalence of rabies virus neutralizing antibodies and associated factors in a Colorado population of big brown bats (Eptesicus fuscus)","interactions":[],"lastModifiedDate":"2018-10-20T12:37:27","indexId":"70095190","displayToPublicDate":"2014-02-24T08:08:43","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2980,"text":"PLoS ONE","active":true,"publicationSubtype":{"id":10}},"title":"Variability in seroprevalence of rabies virus neutralizing antibodies and associated factors in a Colorado population of big brown bats (Eptesicus fuscus)","docAbstract":"In 2001–2005 we sampled permanently marked big brown bats (Eptesicus fuscus) at summer roosts in buildings at Fort Collins, Colorado, for rabies virus neutralizing antibodies (RVNA). Seroprevalence was higher in adult females (17.9%, n = 2,332) than males (9.4%, n = 128; P = 0.007) or volant juveniles (10.2%, n = 738; P<0.0001). Seroprevalence was lowest in a drought year with local insecticide use and highest in the year with normal conditions, suggesting that environmental stress may suppress RVNA production in big brown bats. Seroprevalence also increased with age of bat, and varied from 6.2 to 26.7% among adult females at five roosts sampled each year for five years. Seroprevalence of adult females at 17 other roosts sampled for 1 to 4 years ranged from 0.0 to 47.1%. Using logistic regression, the only ranking model in our candidate set of explanatory variables for serological status at first sampling included year, day of season, and a year by day of season interaction that varied with relative drought conditions. The presence or absence of antibodies in individual bats showed temporal variability. Year alone provided the best model to explain the likelihood of adult female bats showing a transition to seronegative from a previously seropositive state. Day of the season was the only competitive model to explain the likelihood of a transition from seronegative to seropositive, which increased as the season progressed. We found no rabies viral RNA in oropharyngeal secretions of 261 seropositive bats or in organs of 13 euthanized seropositive bats. Survival of seropositive and seronegative bats did not differ. The presence of RVNA in serum of bats should not be interpreted as evidence for ongoing rabies infection.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"PLoS ONE","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","publisher":"PLoS One","doi":"10.1371/journal.pone.0086261","usgsCitation":"O’Shea, T., Bowen, R.A., Stanley, T.R., Shankar, V., and Rupprecht, C.E., 2014, Variability in seroprevalence of rabies virus neutralizing antibodies and associated factors in a Colorado population of big brown bats (Eptesicus fuscus): PLoS ONE, v. 9, no. 1, e86261, 13 p., https://doi.org/10.1371/journal.pone.0086261.","productDescription":"e86261, 13 p.","ipdsId":"IP-052494","costCenters":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"links":[{"id":473168,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1371/journal.pone.0086261","text":"Publisher Index Page"},{"id":282923,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1371/journal.pone.0086261"},{"id":282924,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Colorado","city":"Fort Collins","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -105.153,40.474 ], [ -105.153,40.639 ], [ -104.892,40.639 ], [ -104.892,40.474 ], [ -105.153,40.474 ] ] ] } } ] }","volume":"9","issue":"1","noUsgsAuthors":false,"publicationDate":"2014-01-22","publicationStatus":"PW","scienceBaseUri":"5351706ce4b05569d805a435","contributors":{"authors":[{"text":"O’Shea, Thomas J.","contributorId":89442,"corporation":false,"usgs":true,"family":"O’Shea","given":"Thomas J.","affiliations":[],"preferred":false,"id":491094,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bowen, Richard A.","contributorId":64145,"corporation":false,"usgs":true,"family":"Bowen","given":"Richard","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":491093,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Stanley, Thomas R. 0000-0002-8393-0005 stanleyt@usgs.gov","orcid":"https://orcid.org/0000-0002-8393-0005","contributorId":209928,"corporation":false,"usgs":true,"family":"Stanley","given":"Thomas","email":"stanleyt@usgs.gov","middleInitial":"R.","affiliations":[{"id":291,"text":"Fort Collins Science Center","active":true,"usgs":true}],"preferred":true,"id":491091,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Shankar, Vidya","contributorId":8754,"corporation":false,"usgs":true,"family":"Shankar","given":"Vidya","email":"","affiliations":[],"preferred":false,"id":491092,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Rupprecht, Charles E.","contributorId":95774,"corporation":false,"usgs":true,"family":"Rupprecht","given":"Charles","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":491095,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70074485,"text":"ofr20141013 - 2014 - Investigations into near-real-time surveying for geophysical data collection using an autonomous ground vehicle","interactions":[],"lastModifiedDate":"2023-05-26T13:59:21.176192","indexId":"ofr20141013","displayToPublicDate":"2014-02-24T07:59:00","publicationYear":"2014","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2014-1013","title":"Investigations into near-real-time surveying for geophysical data collection using an autonomous ground vehicle","docAbstract":"The U.S. Geological Survey and the National Aeronautics and Space Administration are cooperatively investigating the utility of unmanned vehicles for near-real-time autonomous surveys of geophysical data collection. Initially focused on unmanned ground vehicle collection of magnetic data, this cooperative effort has brought unmanned surveying, precision guidance, near-real-time communication, on-the-fly data processing, and near-real-time data interpretation into the realm of ground geophysical surveying, all of which offer advantages over current methods of manned collection of ground magnetic data. An unmanned ground vehicle mission has demonstrated that these vehicles can successfully complete missions to collect geophysical data, and add advantages in data collection, processing, and interpretation. We view the current experiment as an initial phase in further unmanned vehicle data-collection missions, including aerial surveying.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, GA","doi":"10.3133/ofr20141013","collaboration":"In cooperation with the National Aeronautics and Space Administration Ames Research Center","usgsCitation":"Phelps, G.A., Ippolito, C., Lee, R., Spritzer, R., and Yeh, Y., 2014, Investigations into near-real-time surveying for geophysical data collection using an autonomous ground vehicle: U.S. Geological Survey Open-File Report 2014-1013, iv, 12 p., https://doi.org/10.3133/ofr20141013.","productDescription":"iv, 12 p.","numberOfPages":"16","onlineOnly":"Y","ipdsId":"IP-044480","costCenters":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"links":[{"id":282658,"rank":3,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr20141013.jpg"},{"id":282657,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2014/1013/pdf/ofr2014-1013.pdf"},{"id":282652,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2014/1013/"}],"country":"United States","state":"California","city":"Menlo Park","otherGeospatial":"Flood Park","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -122.1751655,37.4732472 ], [ -122.1751655,37.4768635 ], [ -122.1690321,37.4768635 ], [ -122.1690321,37.4732472 ], [ -122.1751655,37.4732472 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd6322e4b0b290850fe9c3","contributors":{"authors":[{"text":"Phelps, Geoffrey A. gphelps@usgs.gov","contributorId":1179,"corporation":false,"usgs":true,"family":"Phelps","given":"Geoffrey","email":"gphelps@usgs.gov","middleInitial":"A.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":false,"id":489597,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ippolito, C.","contributorId":47686,"corporation":false,"usgs":true,"family":"Ippolito","given":"C.","email":"","affiliations":[],"preferred":false,"id":489598,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lee, R.","contributorId":97153,"corporation":false,"usgs":true,"family":"Lee","given":"R.","affiliations":[],"preferred":false,"id":489601,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Spritzer, R.","contributorId":85497,"corporation":false,"usgs":true,"family":"Spritzer","given":"R.","email":"","affiliations":[],"preferred":false,"id":489600,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Yeh, Y.","contributorId":59345,"corporation":false,"usgs":true,"family":"Yeh","given":"Y.","email":"","affiliations":[],"preferred":false,"id":489599,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}} ,{"id":70175910,"text":"70175910 - 2014 - Quantitative study of tectonic geomorphology along Haiyuan fault based on airborne LiDAR","interactions":[],"lastModifiedDate":"2016-08-20T16:14:44","indexId":"70175910","displayToPublicDate":"2014-02-22T06:30:00","publicationYear":"2014","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1235,"text":"Chinese Science Bulletin","active":true,"publicationSubtype":{"id":10}},"title":"Quantitative study of tectonic geomorphology along Haiyuan fault based on airborne LiDAR","docAbstract":"High-precision and high-resolution topography are the fundamental data for active fault research. Light detection and ranging (LiDAR) presents a new approach to build detailed digital elevation models effectively. We take the Haiyuan fault in Gansu Province as an example of how LiDAR data may be used to improve the study of active faults and the risk assessment of related hazards. In the eastern segment of the Haiyuan fault, the Shaomayin site has been comprehensively investigated in previous research because of its exemplary tectonic topographic features. Based on unprecedented LiDAR data, the horizontal and vertical coseismic offsets at the Shaomayin site are described. The measured horizontal value is about 8.6 m, and the vertical value is about 0.8 m. Using prior dating ages sampled from the same location, we estimate the horizontal slip rate as 4.0 ± 1.0 mm/a with high confidence and define that the lower bound of the vertical slip rate is 0.4 ± 0.1 mm/a since the Holocene. LiDAR data can repeat the measurements of field work on quantifying offsets of tectonic landform features quite well. The offset landforms are visualized on an office computer workstation easily, and specialized software may be used to obtain displacement quantitatively. By combining precious chronological results, the fundamental link between fault activity and large earthquakes is better recognized, as well as the potential risk for future earthquake hazards.
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