{"pageNumber":"287","pageRowStart":"7150","pageSize":"25","recordCount":16446,"records":[{"id":70184381,"text":"70184381 - 2005 - Biodegradation of N-nitrosodimethylamine in soil from a water reclamation facility","interactions":[],"lastModifiedDate":"2017-03-08T11:46:10","indexId":"70184381","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1042,"text":"Bioremediation Journal","active":true,"publicationSubtype":{"id":10}},"title":"Biodegradation of N-nitrosodimethylamine in soil from a water reclamation facility","docAbstract":"<p><span>The potential introduction of </span><i>N</i><span>-nitrosodimethylamine (NDMA) into groundwater during water reclamation activities poses a significant risk to groundwater drinking supplies. Greater than 54% biodegradation of </span><i>N</i><span>-[methyl-</span><sup>14</sup><span>C]NDMA to </span><sup>14</sup><span>CO</span><sub>2</sub><span> or to </span><sup>14</sup><span>CO</span><sub>2</sub><span> and </span><sup>14</sup><span>CH</span><sub>4</sub><span> was observed in soil from a water reclamation facility under oxic or anoxic conditions, respectively. Likewise, biodegradation was significant in microcosms containing soil with no history of NDMA contamination. These results indicate that aerobic and anaerobic biodegradation of NDMA may be an effective component of NDMA attenuation in water reclamation facility soils.</span></p>","language":"English","publisher":"Taylor & Francis","doi":"10.1080/10889860500276607","usgsCitation":"Bradley, P.M., Carr, S.A., Baird, R.B., and Chapelle, F.H., 2005, Biodegradation of N-nitrosodimethylamine in soil from a water reclamation facility: Bioremediation Journal, v. 9, no. 2, p. 115-120, https://doi.org/10.1080/10889860500276607.","productDescription":"6 p. ","startPage":"115","endPage":"120","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":337054,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"9","issue":"2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"58c12641e4b014cc3a3d34e2","contributors":{"authors":[{"text":"Bradley, Paul M. 0000-0001-7522-8606 pbradley@usgs.gov","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":361,"corporation":false,"usgs":true,"family":"Bradley","given":"Paul","email":"pbradley@usgs.gov","middleInitial":"M.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":true,"id":681245,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Carr, Steve A.","contributorId":187667,"corporation":false,"usgs":false,"family":"Carr","given":"Steve","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":681246,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baird, Rodger B.","contributorId":187668,"corporation":false,"usgs":false,"family":"Baird","given":"Rodger","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":681247,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Chapelle, Francis H. chapelle@usgs.gov","contributorId":1350,"corporation":false,"usgs":true,"family":"Chapelle","given":"Francis","email":"chapelle@usgs.gov","middleInitial":"H.","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true},{"id":559,"text":"South Carolina Water Science Center","active":true,"usgs":true}],"preferred":true,"id":681248,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70184385,"text":"70184385 - 2005 - Pacific volcanoes, mercury contaminated fish, and polynesian taboos","interactions":[],"lastModifiedDate":"2018-10-31T09:48:57","indexId":"70184385","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1257,"text":"Clinical Toxicology","active":true,"publicationSubtype":{"id":10}},"title":"Pacific volcanoes, mercury contaminated fish, and polynesian taboos","docAbstract":"<p>No abstract available.&nbsp;</p>","language":"English","publisher":"Taylor & Francis","doi":"10.1081/CLT-200068868","usgsCitation":"Dellinger, J., Hudson, J., Krabbenhoft, D., and Hinano Murphy, M., 2005, Pacific volcanoes, mercury contaminated fish, and polynesian taboos: Clinical Toxicology, v. 43, no. 6, p. 595-595, https://doi.org/10.1081/CLT-200068868.","productDescription":"2 p. ","startPage":"595","endPage":"595","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477886,"rank":0,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1081/clt-200068868","text":"Publisher Index Page"},{"id":337059,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"6","noUsgsAuthors":false,"publicationDate":"2008-10-07","publicationStatus":"PW","scienceBaseUri":"58c12641e4b014cc3a3d34de","contributors":{"authors":[{"text":"Dellinger, John","contributorId":187671,"corporation":false,"usgs":false,"family":"Dellinger","given":"John","email":"","affiliations":[],"preferred":false,"id":681257,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hudson, Jean","contributorId":187672,"corporation":false,"usgs":false,"family":"Hudson","given":"Jean","email":"","affiliations":[],"preferred":false,"id":681258,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Krabbenhoft, David","contributorId":92538,"corporation":false,"usgs":true,"family":"Krabbenhoft","given":"David","affiliations":[],"preferred":false,"id":681259,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Hinano Murphy, M.E.","contributorId":187670,"corporation":false,"usgs":false,"family":"Hinano Murphy","given":"M.E.","email":"","affiliations":[],"preferred":false,"id":681260,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029693,"text":"70029693 - 2005 - Application of wavelet analysis for monitoring the hydrologic effects of dam operation: Glen canyon dam and the Colorado River at lees ferry, Arizona","interactions":[],"lastModifiedDate":"2012-03-12T17:21:06","indexId":"70029693","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3301,"text":"River Research and Applications","active":true,"publicationSubtype":{"id":10}},"title":"Application of wavelet analysis for monitoring the hydrologic effects of dam operation: Glen canyon dam and the Colorado River at lees ferry, Arizona","docAbstract":"Wavelet analysis is a powerful tool with which to analyse the hydrologic effects of dam construction and operation on river systems. Using continuous records of instantaneous discharge from the Lees Ferry gauging station and records of daily mean discharge from upstream tributaries, we conducted wavelet analyses of the hydrologic structure of the Colorado River in Grand Canyon. The wavelet power spectrum (WPS) of daily mean discharge provided a highly compressed and integrative picture of the post-dam elimination of pronounced annual and sub-annual flow features. The WPS of the continuous record showed the influence of diurnal and weekly power generation cycles, shifts in discharge management, and the 1996 experimental flood in the post-dam period. Normalization of the WPS by local wavelet spectra revealed the fine structure of modulation in discharge scale and amplitude and provides an extremely efficient tool with which to assess the relationships among hydrologic cycles and ecological and geomorphic systems. We extended our analysis to sections of the Snake River and showed how wavelet analysis can be used as a data mining technique. The wavelet approach is an especially promising tool with which to assess dam operation in less well-studied regions and to evaluate management attempts to reconstruct desired flow characteristics. Copyright ?? 2005 John Wiley & Sons, Ltd.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"River Research and Applications","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1002/rra.827","issn":"15351459","usgsCitation":"White, M., Schmidt, J.C., and Topping, D., 2005, Application of wavelet analysis for monitoring the hydrologic effects of dam operation: Glen canyon dam and the Colorado River at lees ferry, Arizona: River Research and Applications, v. 21, no. 5, p. 551-565, https://doi.org/10.1002/rra.827.","startPage":"551","endPage":"565","numberOfPages":"15","costCenters":[],"links":[{"id":240269,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212735,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1002/rra.827"}],"volume":"21","issue":"5","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059ecc1e4b0c8380cd49473","contributors":{"authors":[{"text":"White, M.A.","contributorId":8312,"corporation":false,"usgs":true,"family":"White","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":423842,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Schmidt, J. C.","contributorId":60245,"corporation":false,"usgs":true,"family":"Schmidt","given":"J.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":423844,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Topping, D.J. 0000-0002-2104-4577","orcid":"https://orcid.org/0000-0002-2104-4577","contributorId":53927,"corporation":false,"usgs":true,"family":"Topping","given":"D.J.","affiliations":[],"preferred":false,"id":423843,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029690,"text":"70029690 - 2005 - Estimating discharge in rivers using remotely sensed hydraulic information","interactions":[],"lastModifiedDate":"2012-03-12T17:21:07","indexId":"70029690","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2342,"text":"Journal of Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Estimating discharge in rivers using remotely sensed hydraulic information","docAbstract":"A methodology to estimate in-bank river discharge exclusively from remotely sensed hydraulic data is developed. Water-surface width and maximum channel width measured from 26 aerial and digital orthophotos of 17 single channel rivers and 41 SAR images of three braided rivers were coupled with channel slope data obtained from topographic maps to estimate the discharge. The standard error of the discharge estimates were within a factor of 1.5-2 (50-100%) of the observed, with the mean estimate accuracy within 10%. This level of accuracy was achieved using calibration functions developed from observed discharge. The calibration functions use reach specific geomorphic variables, the maximum channel width and the channel slope, to predict a correction factor. The calibration functions are related to channel type. Surface velocity and width information, obtained from a single C-band image obtained by the Jet Propulsion Laboratory's (JPL's) AirSAR was also used to estimate discharge for a reach of the Missouri River. Without using a calibration function, the estimate accuracy was +72% of the observed discharge, which is within the expected range of uncertainty for the method. However, using the observed velocity to calibrate the initial estimate improved the estimate accuracy to within +10% of the observed. Remotely sensed discharge estimates with accuracies reported in this paper could be useful for regional or continental scale hydrologic studies, or in regions where ground-based data is lacking. ?? 2004 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jhydrol.2004.11.022","issn":"00221694","usgsCitation":"Bjerklie, D., Moller, D., Smith, L., and Dingman, S., 2005, Estimating discharge in rivers using remotely sensed hydraulic information: Journal of Hydrology, v. 309, no. 1-4, p. 191-209, https://doi.org/10.1016/j.jhydrol.2004.11.022.","startPage":"191","endPage":"209","numberOfPages":"19","costCenters":[],"links":[{"id":212677,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jhydrol.2004.11.022"},{"id":240201,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"309","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0b16e4b0c8380cd5256e","contributors":{"authors":[{"text":"Bjerklie, D.M.","contributorId":68923,"corporation":false,"usgs":true,"family":"Bjerklie","given":"D.M.","affiliations":[],"preferred":false,"id":423832,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Moller, D.","contributorId":47585,"corporation":false,"usgs":true,"family":"Moller","given":"D.","email":"","affiliations":[],"preferred":false,"id":423831,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Smith, L.C.","contributorId":88561,"corporation":false,"usgs":true,"family":"Smith","given":"L.C.","email":"","affiliations":[],"preferred":false,"id":423833,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dingman, S.L.","contributorId":46720,"corporation":false,"usgs":true,"family":"Dingman","given":"S.L.","email":"","affiliations":[],"preferred":false,"id":423830,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029676,"text":"70029676 - 2005 - Outflow channel sources, reactivation, and chaos formation, Xanthe Terra, Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:21:05","indexId":"70029676","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1963,"text":"Icarus","active":true,"publicationSubtype":{"id":10}},"title":"Outflow channel sources, reactivation, and chaos formation, Xanthe Terra, Mars","docAbstract":"The undulating, warped, and densely fractured surfaces of highland regions east of Valles Marineris (located north of the eastern Aureum Chaos, east of the Hydraotes Chaos, and south of the Hydaspis Chaos) resulted from extensional surface warping related to ground subsidence, caused when pressurized water confined in subterranean caverns was released to the surface. Water emanations formed crater lakes and resulted in channeling episodes involved in the excavation of Ares, Tiu, and Simud Valles of the eastern part of the circum-Chryse outflow channel system. Progressive surface subsidence and associated reduction of the subsurface cavernous volume, and/or episodes of magmatic-driven activity, led to increases of the hydrostatic pressure, resulting in reactivation of both catastrophic and non-catastrophic outflow activity. Ancient cratered highland and basin materials that underwent large-scale subsidence grade into densely fractured terrains. Collapse of rock materials in these regions resulted in the formation of chaotic terrains, which occur in and near the headwaters of the eastern circum-Chryse outflow channels. The deepest chaotic terrain in the Hydaspis Chaos region resulted from the collapse of pre-existing outflow channel floors. The release of volatiles and related collapse may have included water emanations not necessarily linked to catastrophic outflow. Basal warming related to dike intrusions, thermokarst activity involving wet sediments and/or dissected ice-enriched country rock, permafrost exposed to the atmosphere by extensional tectonism and channel incision, and/or the injection of water into porous floor material, may have enhanced outflow channel floor instability and subsequent collapse. In addition to the possible genetic linkage to outflow channel development dating back to at least the Late Noachian, clear disruption of impact craters with pristine ejecta blankets and rims, as well as preservation of fine tectonic fabrics, suggest that plateau subsidence and chaos formation may have continued well into the Amazonian Period. The geologic and paleohydrologic histories presented here have important implications, as new mechanisms for outflow channel formation and other fluvial activity are described, and new reactivation mechanisms are proposed for the origin of chaotic terrain as contributors to flooding. Detailed geomorphic analysis indicates that subterranean caverns may have been exposed during chaos formation, and thus chaotic terrains mark prime locations for future geologic, hydrologic, and possible astrobiologic exploration. ?? 2004 Elsevier Inc. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Icarus","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.icarus.2004.10.025","issn":"00191035","usgsCitation":"Rodriguez, J., Sasaki, S., Kuzmin, R., Dohm, J.M., Tanaka, K.L., Miyamoto, H., Kurita, K., Komatsu, G., Fairen, A., and Ferris, J., 2005, Outflow channel sources, reactivation, and chaos formation, Xanthe Terra, Mars: Icarus, v. 175, no. 1, p. 36-57, https://doi.org/10.1016/j.icarus.2004.10.025.","startPage":"36","endPage":"57","numberOfPages":"22","costCenters":[],"links":[{"id":212942,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.icarus.2004.10.025"},{"id":240511,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"175","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a71bbe4b0c8380cd76728","contributors":{"authors":[{"text":"Rodriguez, J.A.P.","contributorId":55948,"corporation":false,"usgs":true,"family":"Rodriguez","given":"J.A.P.","email":"","affiliations":[],"preferred":false,"id":423781,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sasaki, S.","contributorId":78534,"corporation":false,"usgs":true,"family":"Sasaki","given":"S.","email":"","affiliations":[],"preferred":false,"id":423783,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Kuzmin, R.O.","contributorId":14932,"corporation":false,"usgs":true,"family":"Kuzmin","given":"R.O.","email":"","affiliations":[],"preferred":false,"id":423776,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dohm, J. M.","contributorId":102150,"corporation":false,"usgs":true,"family":"Dohm","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":423784,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Tanaka, K. L.","contributorId":31394,"corporation":false,"usgs":false,"family":"Tanaka","given":"K.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":423778,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Miyamoto, H.","contributorId":56831,"corporation":false,"usgs":true,"family":"Miyamoto","given":"H.","email":"","affiliations":[],"preferred":false,"id":423782,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kurita, K.","contributorId":31583,"corporation":false,"usgs":true,"family":"Kurita","given":"K.","email":"","affiliations":[],"preferred":false,"id":423779,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Komatsu, G.","contributorId":35913,"corporation":false,"usgs":true,"family":"Komatsu","given":"G.","email":"","affiliations":[],"preferred":false,"id":423780,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Fairen, A.G.","contributorId":25335,"corporation":false,"usgs":true,"family":"Fairen","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":423777,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Ferris, J.C.","contributorId":13731,"corporation":false,"usgs":true,"family":"Ferris","given":"J.C.","email":"","affiliations":[],"preferred":false,"id":423775,"contributorType":{"id":1,"text":"Authors"},"rank":10}]}}
,{"id":70029657,"text":"70029657 - 2005 - Incorporating seepage losses into the unsteady streamflow equations for simulating intermittent flow along mountain front streams","interactions":[],"lastModifiedDate":"2018-11-05T08:05:57","indexId":"70029657","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3722,"text":"Water Resources Research","onlineIssn":"1944-7973","printIssn":"0043-1397","active":true,"publicationSubtype":{"id":10}},"title":"Incorporating seepage losses into the unsteady streamflow equations for simulating intermittent flow along mountain front streams","docAbstract":"<p><span>Seepage losses along numerous mountain front streams that discharge intermittently onto alluvial fans and piedmont alluvial plains are an important source of groundwater in the Basin and Range Province of the Western United States. Determining the distribution of seepage loss along mountain front streams is important when assessing groundwater resources of the region. Seepage loss along a mountain front stream in northern Nevada was evaluated using a one‐dimensional unsteady streamflow model. Seepage loss was incorporated into the spatial derivatives of the streamflow equations. Because seepage loss from streams is dependent on stream depth, wetted perimeter, and streambed properties, a two‐dimensional variably saturated flow model was used to develop a series of relations between seepage loss and stream depth for each reach. This method works when streams are separated from groundwater by variably saturated sediment. Two periods of intermittent flow were simulated to evaluate the modeling approach. The model reproduced measured flow and seepage losses along the channel. Seepage loss in the spring of 2000 was limited to the upper reaches on the alluvial plain and totaled 196,000 m</span><sup>3</sup><span>, whereas 64% of the seepage loss in the spring of 2004 occurred at the base of the alluvial plain and totaled 273,000 m</span><sup>3</sup><span>. A greater seepage loss at the base of the piedmont alluvial plain is attributed to increased streambed hydraulic conductivity caused by less armoring of the channel. The modeling approach provides a method for quantifying and distributing seepage loss along mountain front streams that cross alluvial fans or piedmont alluvial plains.</span></p>","language":"English","publisher":"AGU","doi":"10.1029/2004WR003677","issn":"00431397","usgsCitation":"Niswonger, R., Prudic, D.E., Pohll, G., and Constantz, J., 2005, Incorporating seepage losses into the unsteady streamflow equations for simulating intermittent flow along mountain front streams: Water Resources Research, v. 41, no. 6, p. 1-16, https://doi.org/10.1029/2004WR003677.","productDescription":"16 p.","startPage":"1","endPage":"16","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":486798,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2004wr003677","text":"Publisher Index Page"},{"id":240199,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"41","issue":"6","noUsgsAuthors":false,"publicationDate":"2005-06-09","publicationStatus":"PW","scienceBaseUri":"505a39eae4b0c8380cd61aa3","contributors":{"authors":[{"text":"Niswonger, R.G.","contributorId":103393,"corporation":false,"usgs":true,"family":"Niswonger","given":"R.G.","affiliations":[],"preferred":false,"id":423668,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Prudic, David E. deprudic@usgs.gov","contributorId":3430,"corporation":false,"usgs":true,"family":"Prudic","given":"David","email":"deprudic@usgs.gov","middleInitial":"E.","affiliations":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true}],"preferred":true,"id":423665,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Pohll, G.","contributorId":25362,"corporation":false,"usgs":true,"family":"Pohll","given":"G.","email":"","affiliations":[],"preferred":false,"id":423666,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Constantz, J.","contributorId":29953,"corporation":false,"usgs":true,"family":"Constantz","given":"J.","email":"","affiliations":[],"preferred":false,"id":423667,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029638,"text":"70029638 - 2005 - Development of a solenoid pumped in situ zinc analyzer for environmental monitoring","interactions":[],"lastModifiedDate":"2018-11-05T10:35:58","indexId":"70029638","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":760,"text":"Analytica Chimica Acta","active":true,"publicationSubtype":{"id":10}},"title":"Development of a solenoid pumped in situ zinc analyzer for environmental monitoring","docAbstract":"<div id=\"abstracts\" class=\"Abstracts\"><div id=\"aep-abstract-id11\" class=\"abstract author\"><div id=\"aep-abstract-sec-id12\"><p id=\"simple-para.0055\"><span>A battery powered submersible chemical analyzer, the Zn-DigiScan (Zn Digital Submersible Chemical Analyzer), has been developed for near real-time, in situ monitoring of&nbsp;zinc&nbsp;in aquatic systems.&nbsp;Microprocessor&nbsp;controlled solenoid pumps propel sample and carrier through an&nbsp;anion exchange&nbsp;column to separate zinc from interferences, add&nbsp;colorimetric reagents, and propel the reaction complex through a simple photometric detector. The Zn-DigiScan is capable of self-calibration with periodic injections of standards and blanks. The detection limit with this approach was 30</span>&nbsp;μg&nbsp;L<sup>−1</sup>. Precision was 5–10% relative standard deviation (R.S.D.) below 100&nbsp;μg&nbsp;L<sup>−1</sup>, improving to 1% R.S.D. at 1000&nbsp;μg&nbsp;L<sup>−1</sup>. The linear range extended from 30 to 3000&nbsp;μg&nbsp;L<sup>−1</sup><span>. In situ field results were in agreement with samples analyzed by&nbsp;inductively coupled plasma mass spectrometry&nbsp;(ICPMS). This pump technology is quite versatile and colorimetric methods with complex online manipulations such as column reduction,&nbsp;preconcentration, and dilution can be performed with the DigiScan. However, long-term field deployments in shallow&nbsp;high altitude&nbsp;streams were hampered by air&nbsp;bubble formation&nbsp;in the photometric detector.</span></p></div></div></div>","language":"English","publisher":"Elsevier","doi":"10.1016/j.aca.2005.04.046","issn":"00032670","usgsCitation":"Chapin, T., and Wanty, R., 2005, Development of a solenoid pumped in situ zinc analyzer for environmental monitoring: Analytica Chimica Acta, v. 543, no. 1-2, p. 199-208, https://doi.org/10.1016/j.aca.2005.04.046.","productDescription":"10 p.","startPage":"199","endPage":"208","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240474,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212909,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.aca.2005.04.046"}],"volume":"543","issue":"1-2","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a0043e4b0c8380cd4f692","contributors":{"authors":[{"text":"Chapin, T.P. 0000-0001-6587-0734","orcid":"https://orcid.org/0000-0001-6587-0734","contributorId":24142,"corporation":false,"usgs":true,"family":"Chapin","given":"T.P.","affiliations":[],"preferred":false,"id":423580,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wanty, R. B. 0000-0002-2063-6423","orcid":"https://orcid.org/0000-0002-2063-6423","contributorId":66704,"corporation":false,"usgs":true,"family":"Wanty","given":"R. B.","affiliations":[],"preferred":false,"id":423581,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029633,"text":"70029633 - 2005 - Identifying calcium sources at an acid deposition-impacted spruce forest: A strontium isotope, alkaline earth element multi-tracer approach","interactions":[],"lastModifiedDate":"2018-11-05T10:22:23","indexId":"70029633","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1007,"text":"Biogeochemistry","active":true,"publicationSubtype":{"id":10}},"title":"Identifying calcium sources at an acid deposition-impacted spruce forest: A strontium isotope, alkaline earth element multi-tracer approach","docAbstract":"<p class=\"Para\">Depletion of calcium from forest soils has important implications for forest productivity and health. Ca is available to fine feeder roots from a number of soil organic and mineral sources, but identifying the primary source or changes of sources in response to environmental change is problematic. We used strontium isotope and alkaline earth element concentration ratios of trees and soils to discern the record of Ca sources for red spruce at a base-poor, acid deposition-impacted watershed. We measured<span>&nbsp;</span><sup>87</sup>Sr/<sup>86</sup>Sr and chemical compositions of cross-sectional stemwood cores of red spruce, other spruce tissues and sequential extracts of co-located soil samples.<span>&nbsp;</span><sup>87</sup>Sr/<sup>86</sup>Sr and Sr/Ba ratios together provide a tracer of alkaline earth element sources that distinguishes the plant-available fraction of the shallow organic soils from those of deeper organic and mineral soils. Ca/Sr ratios proved less diagnostic, due to within-tree processes that fractionate these elements from each other. Over the growth period from 1870 to 1960,<span>&nbsp;</span><sup>87</sup>Sr/<sup>86</sup>Sr and Sr/Ba ratios of stemwood samples became progressively more variable and on average trended toward values that considered together are characteristic of the uppermost forest floor. In detail the stemwood chemistry revealed an episode of simultaneous enhanced uptake of all alkaline earth elements during the growth period from 1930 to 1960, coincident with reported local and regional increases in atmospheric inputs of inorganic acidity. We attribute the temporal trends in stemwood chemistry to progressive shallowing of the effective depth of alkaline earth element uptake by fine roots over this growth period, due to preferential concentration of fine roots in the upper forest floor coupled with reduced nutrient uptake by roots in the lower organic and upper mineral soils in response to acid-induced aluminum toxicity. Although both increased atmospheric deposition and selective weathering of Ca-rich minerals such as apatite provide possible alternative explanations of aspects of the observed trends, the chemical buffering capacity of the forest floor-biomass pool limits their effectiveness as causal mechanisms.</p><div class=\"KeywordGroup\" lang=\"en\"><br data-mce-bogus=\"1\"></div>","language":"English","publisher":"Springer","doi":"10.1007/s10533-004-2619-z","issn":"01682563","usgsCitation":"Bullen, T., and Bailey, S., 2005, Identifying calcium sources at an acid deposition-impacted spruce forest: A strontium isotope, alkaline earth element multi-tracer approach: Biogeochemistry, v. 74, no. 1, p. 63-99, https://doi.org/10.1007/s10533-004-2619-z.","productDescription":"37 p.","startPage":"63","endPage":"99","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":240373,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":212826,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10533-004-2619-z"}],"volume":"74","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a384ae4b0c8380cd614f9","contributors":{"authors":[{"text":"Bullen, T.D.","contributorId":79911,"corporation":false,"usgs":true,"family":"Bullen","given":"T.D.","email":"","affiliations":[],"preferred":false,"id":423535,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bailey, S.W.","contributorId":29113,"corporation":false,"usgs":true,"family":"Bailey","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":423534,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029572,"text":"70029572 - 2005 - Sources of nitrate in snowmelt discharge: Evidence from water chemistry and stable isotopes of nitrate","interactions":[],"lastModifiedDate":"2018-10-31T10:18:49","indexId":"70029572","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3728,"text":"Water, Air, & Soil Pollution","onlineIssn":"1573-2932","printIssn":"0049-6979","active":true,"publicationSubtype":{"id":10}},"title":"Sources of nitrate in snowmelt discharge: Evidence from water chemistry and stable isotopes of nitrate","docAbstract":"<p class=\"Para\">To determine whether NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>concentration pulses in surface water in early spring snowmelt discharge are due to atmospheric NO<sub>3</sub><sup>−</sup>, we analyzed stream δ<sup>15</sup>N-NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>and δ<sup>18</sup>O-NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>values between February and June of 2001 and 2002 and compared them to those of throughfall, bulk precipitation, snow, and groundwater. Stream total Al, DOC and Si concentrations were used to indicate preferential water flow through the forest floor, mineral soil, and ground water. The study was conducted in a 135-ha subcatchment of the Arbutus Watershed in the Huntington Wildlife Forest in the Adirondack Region of New York State, U.S.A. Stream discharge in 2001 increased from 0.6 before to 32.4 mm day<sup>−1</sup><span>&nbsp;</span>during snowmelt, and element concentrations increased from 33 to 71 μmol L<sup>−1</sup><span>&nbsp;</span>for NO<sub>3</sub><sup>−</sup>, 3 to 9 μmol L<sup>−1</sup><span>&nbsp;</span>for total Al, and 330 to 570 μmol L<sup>−1</sup>for DOC. Discharge in 2002 was variable, with a maximum of 30 mm day<sup>−1</sup><span>&nbsp;</span>during snowmelt. The highest NO<sub>3</sub><sup>−</sup>, Al, and DOC concentrations were 52, 10, and 630 μmol L<sup>−1</sup>, respectively, and dissolved Si decreased from 148 μmol L<sup>−1</sup><span>&nbsp;</span>before to 96 μmol L<sup>−1</sup><span>&nbsp;</span>during snowmelt. Values of δ<sup>15</sup>N and δ<sup>18</sup>O of NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>in stream water were similar in both years. Stream water, atmospherically-derived solutions, and groundwaters had overlapping δ<sup>15</sup>N-NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>values. In stream and ground water, δ<sup>18</sup>O-NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>values ranged from +5.9 to +12.9‰ and were significantly lower than the +58.3 to +78.7‰ values in atmospheric solutions. Values of δ<sup>18</sup>O-NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>indicating nitrification, increase in Al and DOC, and decrease in dissolved Si concentrations indicating water flow through the soil suggested a dilution of groundwater NO<sub>3</sub><sup>−</sup>by increasing contributions of forest floor and mineral soil NO<sub>3</sub><sup>−</sup><span>&nbsp;</span>during snowmelt.</p><div class=\"KeywordGroup\" lang=\"en\"><br data-mce-bogus=\"1\"></div>","language":"English","publisher":"Springer","doi":"10.1007/s11270-005-4641-8","issn":"00496979","usgsCitation":"Piatek, K., Mitchell, M., Silva, S.R., and Kendall, C., 2005, Sources of nitrate in snowmelt discharge: Evidence from water chemistry and stable isotopes of nitrate: Water, Air, & Soil Pollution, v. 165, no. 1-4, p. 13-35, https://doi.org/10.1007/s11270-005-4641-8.","productDescription":"23 p.","startPage":"13","endPage":"35","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":237751,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210736,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s11270-005-4641-8"}],"volume":"165","issue":"1-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505b9385e4b08c986b31a52a","contributors":{"authors":[{"text":"Piatek, K.B.","contributorId":72583,"corporation":false,"usgs":true,"family":"Piatek","given":"K.B.","email":"","affiliations":[],"preferred":false,"id":423313,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mitchell, M.J.","contributorId":72940,"corporation":false,"usgs":true,"family":"Mitchell","given":"M.J.","email":"","affiliations":[],"preferred":false,"id":423314,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Silva, S. R.","contributorId":27474,"corporation":false,"usgs":true,"family":"Silva","given":"S.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":423311,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Kendall, C. 0000-0002-0247-3405","orcid":"https://orcid.org/0000-0002-0247-3405","contributorId":35050,"corporation":false,"usgs":true,"family":"Kendall","given":"C.","affiliations":[],"preferred":false,"id":423312,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029568,"text":"70029568 - 2005 - Applying petrophysical models to radar travel time and electrical resistivity tomograms: Resolution-dependent limitations","interactions":[],"lastModifiedDate":"2019-10-16T17:06:14","indexId":"70029568","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2314,"text":"Journal of Geophysical Research B: Solid Earth","active":true,"publicationSubtype":{"id":10}},"title":"Applying petrophysical models to radar travel time and electrical resistivity tomograms: Resolution-dependent limitations","docAbstract":"<div class=\"article-section__content en main\"><p><span class=\"paraNumber\">[1]<span>&nbsp;</span></span>Geophysical imaging has traditionally provided qualitative information about geologic structure; however, there is increasing interest in using petrophysical models to convert tomograms to quantitative estimates of hydrogeologic, mechanical, or geochemical parameters of interest (e.g., permeability, porosity, water content, and salinity). Unfortunately, petrophysical estimation based on tomograms is complicated by limited and variable image resolution, which depends on (1) measurement physics (e.g., electrical conduction or electromagnetic wave propagation), (2) parameterization and regularization, (3) measurement error, and (4) spatial variability. We present a framework to predict how core‐scale relations between geophysical properties and hydrologic parameters are altered by the inversion, which produces smoothly varying pixel‐scale estimates. We refer to this loss of information as “correlation loss.” Our approach upscales the core‐scale relation to the pixel scale using the model resolution matrix from the inversion, random field averaging, and spatial statistics of the geophysical property. Synthetic examples evaluate the utility of radar travel time tomography (RTT) and electrical‐resistivity tomography (ERT) for estimating water content. This work provides (1) a framework to assess tomograms for geologic parameter estimation and (2) insights into the different patterns of correlation loss for ERT and RTT. Whereas ERT generally performs better near boreholes, RTT performs better in the interwell region. Application of petrophysical models to the tomograms in our examples would yield misleading estimates of water content. Although the examples presented illustrate the problem of correlation loss in the context of near‐surface geophysical imaging, our results have clear implications for quantitative analysis of tomograms for diverse geoscience applications.</p></div>","language":"English","publisher":"AGU","doi":"10.1029/2004JB003569","issn":"01480227","usgsCitation":"Day-Lewis, F., Singha, K., and Binley, A., 2005, Applying petrophysical models to radar travel time and electrical resistivity tomograms: Resolution-dependent limitations: Journal of Geophysical Research B: Solid Earth, v. 110, no. 8, p. 1-17, https://doi.org/10.1029/2004JB003569.","productDescription":"17 p.","startPage":"1","endPage":"17","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477962,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2004jb003569","text":"Publisher Index Page"},{"id":237678,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"110","issue":"8","noUsgsAuthors":false,"publicationDate":"2005-08-24","publicationStatus":"PW","scienceBaseUri":"5059eccfe4b0c8380cd494e2","contributors":{"authors":[{"text":"Day-Lewis, F. D. 0000-0003-3526-886X","orcid":"https://orcid.org/0000-0003-3526-886X","contributorId":35773,"corporation":false,"usgs":true,"family":"Day-Lewis","given":"F. D.","affiliations":[],"preferred":false,"id":423300,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Singha, K.","contributorId":51431,"corporation":false,"usgs":true,"family":"Singha","given":"K.","affiliations":[],"preferred":false,"id":423301,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Binley, A.M.","contributorId":97310,"corporation":false,"usgs":true,"family":"Binley","given":"A.M.","email":"","affiliations":[],"preferred":false,"id":423302,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029521,"text":"70029521 - 2005 - Herbicides and degradates in shallow aquifers of Illinois: Spatial and temporal trends","interactions":[],"lastModifiedDate":"2018-11-05T07:23:30","indexId":"70029521","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2529,"text":"Journal of the American Water Resources Association","active":true,"publicationSubtype":{"id":10}},"title":"Herbicides and degradates in shallow aquifers of Illinois: Spatial and temporal trends","docAbstract":"<div class=\"abstract-group\"><div class=\"article-section__content en main\"><p>During the fall of 2000, the occurrence was examined of 16 herbicides and 13 herbicide degradates in samples from 55 wells in shallow aquifers underlying grain producing regions of Illinois. Herbicide compounds with concentrations above 0.05 μg/L were detected in 56 percent of the samples. No concentrations exceeded regulatory drinking water standards. The six most frequently detected compounds were degradates. Water age was an important factor in determining vulnerability of ground water to transport of herbicide compounds. Unconsolidated aquifers, which were indicated to generally contain younger ground water than bedrock aquifers, had a higher occurrence of herbicides (73 percent of samples) than bedrock aquifers (22 percent). Temporal analysis to determine if changes in concentrations of selected herbicides and degradates could be observed over a near decadal period indicated a decrease in detection frequency (25 to 18 percent) between samplings in 1991 and 2000. Over this period, significant differences in concentrations were observed for atrazine (decrease) and total acetochlor (increase). The increase in acetochlor compound concentrations corresponds to an increase in acetochlor use during the study period, while the decrease in atrazine concentrations corresponds to relatively consistent use of atrazine. Changes in frequency of herbicide detection and concentration do not appear related to changes in land use near sampled wells.</p></div></div>","language":"English","publisher":"Wiley","doi":"10.1111/j.1752-1688.2005.tb03753.x","issn":"1093474X","usgsCitation":"Mills, P., Kolpin, D., Scribner, E., and Thurman, E., 2005, Herbicides and degradates in shallow aquifers of Illinois: Spatial and temporal trends: Journal of the American Water Resources Association, v. 41, no. 3, p. 537-547, https://doi.org/10.1111/j.1752-1688.2005.tb03753.x.","productDescription":"11 p.","startPage":"537","endPage":"547","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":351,"text":"Iowa Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":237494,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United 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,{"id":70029500,"text":"70029500 - 2005 - Control of impact crater fracture systems on subsurface hydrology, ground subsidence, and collapse, Mars","interactions":[],"lastModifiedDate":"2012-03-12T17:20:46","indexId":"70029500","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2317,"text":"Journal of Geophysical Research E: Planets","active":true,"publicationSubtype":{"id":10}},"title":"Control of impact crater fracture systems on subsurface hydrology, ground subsidence, and collapse, Mars","docAbstract":"Noachian layered materials are pervasively exposed throughout the highlands of Mars. The layered deposits, in places many kilometers thick, exhibit impact craters of diverse morphologic characteristics, ranging from highly degraded to pristine, most of which formed during the period of heavy bombardment. In addition, exhumed impact craters, ancient channels, and fluvial and alluvial fans are visible in the layered deposits through MOC imagery. These features are more abundant in Noachian terrains, which indicates relatively high erosion rates during ancient Mars that competed with heavy meteoritic bombardment. The Noachian layered materials are thus expected to contain numerous buried impact craters in various states of preservation. Here, we propose that impact craters (buried and exposed) and associated fracture systems dominate the basement structural fabric of the ancient highlands and that they have significantly influenced the hydrogeology. Diversity in the occurrence of high and low densities of impact craters and associated fracture systems controls the magnitude of the local effects of magmatic-driven hydrothermal activity. In and surrounding the Tharsis region, for example, the formation of chaotic terrains (the source regions of the circum-Chryse outflow channel system) and a large diversity of collapse structures, including impact crater moats and pit chains, appear to be the result of enhanced hydrothermal activity. Copyright 2005 by the American Geophysical Union.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Geophysical Research E: Planets","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1029/2004JE002365","issn":"01480227","usgsCitation":"Rodriguez, J., Sasaki, S., Dohm, J.M., Tanaka, K.L., Strom, B., Kargel, J., Kuzmin, R., Miyamoto, H., Spray, J., Fairen, A., Komatsu, G., Kurita, K., and Baker, V., 2005, Control of impact crater fracture systems on subsurface hydrology, ground subsidence, and collapse, Mars: Journal of Geophysical Research E: Planets, v. 110, no. 6, p. 1-22, https://doi.org/10.1029/2004JE002365.","startPage":"1","endPage":"22","numberOfPages":"22","costCenters":[],"links":[{"id":477733,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1029/2004je002365","text":"Publisher Index Page"},{"id":210758,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1029/2004JE002365"},{"id":237778,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"110","issue":"6","noUsgsAuthors":false,"publicationDate":"2005-06-15","publicationStatus":"PW","scienceBaseUri":"5059fb42e4b0c8380cd4dda8","contributors":{"authors":[{"text":"Rodriguez, J.A.P.","contributorId":55948,"corporation":false,"usgs":true,"family":"Rodriguez","given":"J.A.P.","email":"","affiliations":[],"preferred":false,"id":423007,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sasaki, S.","contributorId":78534,"corporation":false,"usgs":true,"family":"Sasaki","given":"S.","email":"","affiliations":[],"preferred":false,"id":423010,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Dohm, J. M.","contributorId":102150,"corporation":false,"usgs":true,"family":"Dohm","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":423012,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Tanaka, K. L.","contributorId":31394,"corporation":false,"usgs":false,"family":"Tanaka","given":"K.","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":423004,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Strom, B.","contributorId":15485,"corporation":false,"usgs":true,"family":"Strom","given":"B.","email":"","affiliations":[],"preferred":false,"id":423001,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Kargel, J.","contributorId":81295,"corporation":false,"usgs":true,"family":"Kargel","given":"J.","email":"","affiliations":[],"preferred":false,"id":423011,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Kuzmin, R.","contributorId":62828,"corporation":false,"usgs":true,"family":"Kuzmin","given":"R.","email":"","affiliations":[],"preferred":false,"id":423009,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Miyamoto, H.","contributorId":56831,"corporation":false,"usgs":true,"family":"Miyamoto","given":"H.","email":"","affiliations":[],"preferred":false,"id":423008,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Spray, J.G.","contributorId":13502,"corporation":false,"usgs":true,"family":"Spray","given":"J.G.","email":"","affiliations":[],"preferred":false,"id":423000,"contributorType":{"id":1,"text":"Authors"},"rank":9},{"text":"Fairen, A.G.","contributorId":25335,"corporation":false,"usgs":true,"family":"Fairen","given":"A.G.","email":"","affiliations":[],"preferred":false,"id":423003,"contributorType":{"id":1,"text":"Authors"},"rank":10},{"text":"Komatsu, G.","contributorId":35913,"corporation":false,"usgs":true,"family":"Komatsu","given":"G.","email":"","affiliations":[],"preferred":false,"id":423006,"contributorType":{"id":1,"text":"Authors"},"rank":11},{"text":"Kurita, K.","contributorId":31583,"corporation":false,"usgs":true,"family":"Kurita","given":"K.","email":"","affiliations":[],"preferred":false,"id":423005,"contributorType":{"id":1,"text":"Authors"},"rank":12},{"text":"Baker, V.","contributorId":20532,"corporation":false,"usgs":true,"family":"Baker","given":"V.","email":"","affiliations":[],"preferred":false,"id":423002,"contributorType":{"id":1,"text":"Authors"},"rank":13}]}}
,{"id":70029454,"text":"70029454 - 2005 - Radium isotopes in Cayuga Lake, New York: Indicators of inflow and mixing processes","interactions":[],"lastModifiedDate":"2018-11-05T10:26:30","indexId":"70029454","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2620,"text":"Limnology and Oceanography","active":true,"publicationSubtype":{"id":10}},"title":"Radium isotopes in Cayuga Lake, New York: Indicators of inflow and mixing processes","docAbstract":"<div class=\"article-section__content en main\"><p>Naturally occurring radium isotopes (<sup>223</sup>Ra,<span>&nbsp;</span><sup>224</sup>Ra,<span>&nbsp;</span><sup>226</sup>Ra, and<span>&nbsp;</span><sup>228</sup>Ra) were measured in lake and tributary water of Cayuga Lake, New York, during the course of a vernal inflow event in the spring of 2001. A large influx of groundwater, probably from a carbonate aquifer, entered the lake at its extreme southern end early in the vernal inflow event and spread northward, covering an extensive part of the southern end of the lake. The low<span>&nbsp;</span><sup>228</sup>Ra/<sup>226</sup>Ra activity ratio of this water mass, compared with bulk lake water, allowed its identification through time. Estimates of mixing with bulk lake water were calculated from changes in the 226Ra content. Groundwater inflow to the lake around the delta of a major tributary was detected on the basis of<span>&nbsp;</span><sup>223</sup>Ra and<span>&nbsp;</span><sup>224</sup>Ra activity of lake and tributary water. Inflow of a water mass to the surface of the lake was also detected using<span>&nbsp;</span><sup>223</sup>Ra and<span>&nbsp;</span><sup>224</sup>Ra activity. The integrity of this water mass was monitored using short‐lived radium isotopes. Suspended sediment in the lake water is a source of the short‐lived radium isotopes<span>&nbsp;</span><sup>223</sup>Ra (~2 x 10<sup>−4</sup>dpm L<sup>−1</sup>) and<span>&nbsp;</span><sup>224</sup>Ra (~3 x x 10<sup>−3</sup><span>&nbsp;</span>dpm L<sup>−1</sup>), but bottom sediments are a more significant source of<span>&nbsp;</span><sup>228</sup>Ra. Radium isotopes can be valuable new tools in limnological investigations, allowing detection and monitoring of events and processes such as water inflow and mixing, determining sources of inflowing water, and monitoring introduced water masses as they move within the lake.</p></div>","language":"English","publisher":"ASLO","doi":"10.4319/lo.2005.50.1.0158","issn":"00243590","usgsCitation":"Kraemer, T.F., 2005, Radium isotopes in Cayuga Lake, New York: Indicators of inflow and mixing processes: Limnology and Oceanography, v. 50, no. 1, p. 158-168, https://doi.org/10.4319/lo.2005.50.1.0158.","productDescription":"11 p.","startPage":"158","endPage":"168","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":477781,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.4319/lo.2005.50.1.0158","text":"Publisher Index Page"},{"id":237635,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"New York","otherGeospatial":"Cayuga Lake","volume":"50","issue":"1","noUsgsAuthors":false,"publicationDate":"2005-01-19","publicationStatus":"PW","scienceBaseUri":"505a942fe4b0c8380cd81254","contributors":{"authors":[{"text":"Kraemer, T. F.","contributorId":63400,"corporation":false,"usgs":true,"family":"Kraemer","given":"T.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":422812,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":70029453,"text":"70029453 - 2005 - Distinguishing base-level change and climate signals in a Cretaceous alluvial sequence","interactions":[],"lastModifiedDate":"2012-03-12T17:20:51","indexId":"70029453","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1796,"text":"Geology","active":true,"publicationSubtype":{"id":10}},"title":"Distinguishing base-level change and climate signals in a Cretaceous alluvial sequence","docAbstract":"We present the results of oxygen isotope and electron-microprobe analyses of sphaerosiderites obtained from Cretaceous paleosols in Iowa. The sphaerosiderite ??18O values record Cretaceous meteoric groundwater chemistry and an overall waning of brackish groundwater inundation during alluvial-plain aggradation and soil genesis. We focus on horizons that precipitated from freshwater, in which ??18O values ranging from -3.30??? to -6.8??? relative to the Peedee belemnite standard are interpreted to record variations in the Cretaceous atmospheric hydrologic cycle. During relative sea-level highstands, moisture was derived from the Cretaceous Western Interior Seaway, whereas during lowstands, when the seaway narrowed and occasionally withdrew from the Midcontinent, the dominance of hemispheric-scale atmospheric moisture transport initiated in the tropical Tethys Ocean led to decreased precipitation rates. These processes did not operate like a switch, but rather as a continuum of competing moisture sources and mechanisms of transport between the nearby epicontinental sea and the distant tropics. The sphaerosiderite data demonstrate (1) temporal variation in the intensity of hemispheric-scale atmospheric moisture transport and (2) long-term amplification of the global hydrologic cycle marked by extreme 18O depletion at the Albian-Cenomanian boundary. ?? 2005 Geological Society of America.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1130/G20995.1","issn":"00917613","usgsCitation":"White, T., Witzke, B., Ludvigson, G., and Brenner, R., 2005, Distinguishing base-level change and climate signals in a Cretaceous alluvial sequence: Geology, v. 33, no. 1, p. 13-16, https://doi.org/10.1130/G20995.1.","startPage":"13","endPage":"16","numberOfPages":"4","costCenters":[],"links":[{"id":210647,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1130/G20995.1"},{"id":237634,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"33","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a024ee4b0c8380cd4ffbe","contributors":{"authors":[{"text":"White, T.","contributorId":76538,"corporation":false,"usgs":true,"family":"White","given":"T.","affiliations":[],"preferred":false,"id":422809,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Witzke, B.","contributorId":108310,"corporation":false,"usgs":true,"family":"Witzke","given":"B.","email":"","affiliations":[],"preferred":false,"id":422811,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ludvigson, G.A.","contributorId":90528,"corporation":false,"usgs":true,"family":"Ludvigson","given":"G.A.","affiliations":[],"preferred":false,"id":422810,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Brenner, R.","contributorId":38769,"corporation":false,"usgs":true,"family":"Brenner","given":"R.","email":"","affiliations":[],"preferred":false,"id":422808,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029408,"text":"70029408 - 2005 - \"Sour gas\" hydrothermal jarosite: Ancient to modern acid-sulfate mineralization in the southern Rio Grande Rift","interactions":[],"lastModifiedDate":"2012-03-12T17:20:51","indexId":"70029408","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1213,"text":"Chemical Geology","active":true,"publicationSubtype":{"id":10}},"title":"\"Sour gas\" hydrothermal jarosite: Ancient to modern acid-sulfate mineralization in the southern Rio Grande Rift","docAbstract":"As many as 29 mining districts along the Rio Grande Rift in southern New Mexico contain Rio Grande Rift-type (RGR) deposits consisting of fluorite-barite??sulfide-jarosite, and additional RGR deposits occur to the south in the Basin and Range province near Chihuahua, Mexico. Jarosite occurs in many of these deposits as a late-stage hydrothermal mineral coprecipitated with fluorite, or in veinlets that crosscut barite. In these deposits, many of which are limestone-hosted, jarosite is followed by natrojarosite and is nested within silicified or argillized wallrock and a sequence of fluorite-barite??sulfide and late hematite-gypsum. These deposits range in age from ???10 to 0.4 Ma on the basis of 40Ar/39Ar dating of jarosite. There is a crude north-south distribution of ages, with older deposits concentrated toward the south. Recent deposits also occur in the south, but are confined to the central axis of the rift and are associated with modern geothermal systems. The duration of hydrothermal jarosite mineralization in one of the deposits was approximately 1.0 my. Most ??18OSO4-OH values indicate that jarosite precipitated between 80 and 240 ??C, which is consistent with the range of filling temperatures of fluid inclusions in late fluorite throughout the rift, and in jarosite (180 ??C) from Pen??a Blanca, Chihuahua, Mexico. These temperatures, along with mineral occurrence, require that the jarosite have had a hydrothermal origin in a shallow steam-heated environment wherein the low pH necessary for the precipitation of jarosite was achieved by the oxidation of H2S derived from deeper hydrothermal fluids. The jarosite also has high trace-element contents (notably As and F), and the jarosite parental fluids have calculated isotopic signatures similar to those of modern geothermal waters along the southern rift; isotopic values range from those typical of meteoric water to those of deep brine that has been shown to form from the dissolution of Permian evaporite by deeply circulating meteoric water. Jarosite ??34S values range from -24??? to 5???, overlapping the values for barite and gypsum at the high end of the range and for sulfides at the low end. Most ??34S values for barite are 10.6??? to 13.1???, and many ??34S values for gypsum range from 13.1??? to 13.9??? indicating that a component of aqueous sulfate was derived from Permian evaporites (??34 S=12??2???). The requisite H2SO4 for jarosite formation was derived from oxidation of H2S which was likely largely sour gas derived from the thermochemical reduction of Permian sulfate. The low ??34S values for the precursor H2S probably resulted from exchange deeper in the basin with the more abundant Permian SO42- at ???150 to 200 ??C. Jarosite formed at shallow levels after the pH buffering capacity of the host rock (typically limestone) was neutralized by precipitation of earlier minerals. Some limestone-hosted deposits contain caves that may have been caused by the low pH of the deep basin fluids due to the addition of deep-seated HF and other magmatic gases during periods of renewed rifting. Caves in other deposits may be due to sulfuric acid speleogenesis as a result of H2S incursion into oxygenated groundwaters. The isotopic data in these \"sour gas\" jarosite occurrences encode a record of episodic tectonic or hydrologic processes that have operated in the rift over the last 10 my. ?? 2004 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Chemical Geology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.chemgeo.2004.06.042","issn":"00092541","usgsCitation":"Lueth, V., Rye, R.O., and Peters, L., 2005, \"Sour gas\" hydrothermal jarosite: Ancient to modern acid-sulfate mineralization in the southern Rio Grande Rift: Chemical Geology, v. 215, no. 1-4 SPEC. ISS., p. 339-360, https://doi.org/10.1016/j.chemgeo.2004.06.042.","startPage":"339","endPage":"360","numberOfPages":"22","costCenters":[],"links":[{"id":210536,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.chemgeo.2004.06.042"},{"id":237484,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"215","issue":"1-4 SPEC. ISS.","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e214e4b0c8380cd4594a","contributors":{"authors":[{"text":"Lueth, V.W.","contributorId":58831,"corporation":false,"usgs":true,"family":"Lueth","given":"V.W.","affiliations":[],"preferred":false,"id":422642,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rye, R. O.","contributorId":66208,"corporation":false,"usgs":true,"family":"Rye","given":"R.","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":422643,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Peters, L.","contributorId":49971,"corporation":false,"usgs":true,"family":"Peters","given":"L.","affiliations":[],"preferred":false,"id":422641,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029405,"text":"70029405 - 2005 - A method for the use of landscape metrics in freshwater research and management","interactions":[],"lastModifiedDate":"2018-10-31T09:14:37","indexId":"70029405","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2602,"text":"Landscape Ecology","active":true,"publicationSubtype":{"id":10}},"title":"A method for the use of landscape metrics in freshwater research and management","docAbstract":"<p class=\"Para\">Freshwater research and management efforts could be greatly enhanced by a better understanding of the relationship between landscape-scale factors and water quality indicators. This is particularly true in urban areas, where land transformation impacts stream systems at a variety of scales. Despite advances in landscape quantification methods, several studies attempting to elucidate the relationship between land use/land cover (LULC) and water quality have resulted in mixed conclusions. However, these studies have largely relied on compositional landscape metrics. For urban and urbanizing watersheds in particular, the use of metrics that capture spatial pattern may further aid in distinguishing the effects of various urban growth patterns, as well as exploring the interplay between environmental and socioeconomic variables. However, to be truly useful for freshwater applications, pattern metrics must be optimized based on characteristic watershed properties and common water quality point sampling methods. Using a freely available LULC data set for the Santa Clara Basin, California, USA, we quantified landscape composition and configuration for subwatershed areas upstream of individual sampling sites, reducing the number of metrics based on: (1) sensitivity to changes in extent and (2) redundancy, as determined by a multivariate factor analysis. The first two factors, interpreted as (1) patch density and distribution and (2) patch shape and landscape subdivision, explained approximately 85% of the variation in the data set, and are highly reflective of the heterogeneous urban development pattern found in the study area. Although offering slightly less explanatory power, compositional metrics can provide important contextual information.</p><div class=\"KeywordGroup\" lang=\"en\"><br data-mce-bogus=\"1\"></div>","language":"English","publisher":"Springer","doi":"10.1007/s10980-004-2261-0","issn":"09212973","usgsCitation":"Kearns, F., Kelly, N., Carter, J., and Resh, V., 2005, A method for the use of landscape metrics in freshwater research and management: Landscape Ecology, v. 20, no. 1, p. 113-125, https://doi.org/10.1007/s10980-004-2261-0.","productDescription":"13 p.","startPage":"113","endPage":"125","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":237414,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210482,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1007/s10980-004-2261-0"}],"volume":"20","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"5059e459e4b0c8380cd465d6","contributors":{"authors":[{"text":"Kearns, F.R.","contributorId":55197,"corporation":false,"usgs":true,"family":"Kearns","given":"F.R.","email":"","affiliations":[],"preferred":false,"id":422623,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kelly, N.M.","contributorId":56436,"corporation":false,"usgs":true,"family":"Kelly","given":"N.M.","email":"","affiliations":[],"preferred":false,"id":422624,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carter, J.L.","contributorId":26030,"corporation":false,"usgs":true,"family":"Carter","given":"J.L.","email":"","affiliations":[],"preferred":false,"id":422622,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Resh, V.H.","contributorId":64876,"corporation":false,"usgs":true,"family":"Resh","given":"V.H.","affiliations":[],"preferred":false,"id":422625,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":70029386,"text":"70029386 - 2005 - Behavior of a chlorinated ethene plume following source-area treatment with Fenton's reagent","interactions":[],"lastModifiedDate":"2018-10-31T09:11:06","indexId":"70029386","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1864,"text":"Ground Water Monitoring and Remediation","active":true,"publicationSubtype":{"id":10}},"title":"Behavior of a chlorinated ethene plume following source-area treatment with Fenton's reagent","docAbstract":"<p><span>Monitoring data collected over a 6‐year period show that a plume of chlorinated ethene–contaminated ground water has contracted significantly following treatment of the contaminant source area using in situ oxidation. Prior to treatment (1998), concentrations of perchloroethene (PCE) exceeded 4500 μg/L in a contaminant source area associated with a municipal landfill in Kings Bay, Georgia. The plume emanating from this source area was characterized by vinyl chloride (VC) concentrations exceeding 800 μg/L. In situ oxidation using Fenton's reagent lowered PCE concentrations in the source area below 100 μg/L, and PCE concentrations have not rebounded above this level since treatment. In the 6 years following treatment, VC concentrations in the plume have decreased significantly. These concentration declines can be attributed to the movement of Fenton's reagent–treated water downgradient through the system, the cessation of a previously installed pump‐and‐treat system, and the significant natural attenuation capacity of this anoxic aquifer. While in situ oxidation briefly decreased the abundance and activity of microorganisms in the source area, this activity rebounded in &lt;6 months. Nevertheless, the shift from sulfate‐reducing to Fe(III)‐reducing conditions induced by Fenton's treatment may have decreased the efficiency of reductive dechlorination in the injection zone. The results of this study indicate that source‐area removal actions, particularly when applied to ground water systems that have significant natural attenuation capacity, can be effective in decreasing the areal extent and contaminant concentrations of chlorinated ethene plumes.</span></p>","language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6592.2005.0020.x","issn":"10693629","usgsCitation":"Chapelle, F.H., Bradley, P., and Casey, C., 2005, Behavior of a chlorinated ethene plume following source-area treatment with Fenton's reagent: Ground Water Monitoring and Remediation, v. 25, no. 2, p. 131-141, https://doi.org/10.1111/j.1745-6592.2005.0020.x.","productDescription":"11 p.","startPage":"131","endPage":"141","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":237668,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210673,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1745-6592.2005.0020.x"}],"volume":"25","issue":"2","noUsgsAuthors":false,"publicationDate":"2005-05-27","publicationStatus":"PW","scienceBaseUri":"5059f09fe4b0c8380cd4a7f9","contributors":{"authors":[{"text":"Chapelle, F. H.","contributorId":101697,"corporation":false,"usgs":true,"family":"Chapelle","given":"F.","email":"","middleInitial":"H.","affiliations":[],"preferred":false,"id":422519,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bradley, P. M. 0000-0001-7522-8606","orcid":"https://orcid.org/0000-0001-7522-8606","contributorId":29465,"corporation":false,"usgs":true,"family":"Bradley","given":"P. M.","affiliations":[],"preferred":false,"id":422518,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Casey, C.C.","contributorId":10206,"corporation":false,"usgs":true,"family":"Casey","given":"C.C.","email":"","affiliations":[],"preferred":false,"id":422517,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":70029333,"text":"70029333 - 2005 - Hydrologic regime controls soil phosphorus fluxes in restoration and undisturbed wetlands","interactions":[],"lastModifiedDate":"2012-03-12T17:20:51","indexId":"70029333","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":3271,"text":"Restoration Ecology","active":true,"publicationSubtype":{"id":10}},"title":"Hydrologic regime controls soil phosphorus fluxes in restoration and undisturbed wetlands","docAbstract":"Many wetland restoration projects occur on former agricultural soils that have a history of disturbance and fertilization, making them prone to phosphorus (P) release upon flooding. To study the relationship between P release and hydrologic regime, we collected soil cores from three restoration wetlands and three undisturbed wetlands around Upper Klamath Lake in southern Oregon, U.S.A. Soil cores were subjected to one of three hydrologic regimes - flooded, moist, and dry - for 7.5 weeks, and P fluxes were measured upon reflooding. Soils from restoration wetlands released P upon reflooding regardless of the hydrologic regime, with the greatest releases coming from soils that had been flooded or dried. Undisturbed wetland soils released P only after drying. Patterns in P release can be explained by a combination of physical and biological processes, including the release of iron-bound P due to anoxia in the flooded treatment and the mineralization of organic P under aerobic conditions in the dry treatment. Higher rates of soil P release from restoration wetland soils, particularly under flooded conditions, were associated with higher total P concentrations compared with undisturbed wetland soils. We conclude that maintaining moist soil is the means to minimize P release from recently flooded wetland soils. Alternatively, prolonged flooding provides a means of liberating excess labile P from former agricultural soils while minimizing continued organic P mineralization and soil subsidence. ?? 2005 Society for Ecological Restoration International.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Restoration Ecology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1111/j.1526-100X.2005.00043.x","issn":"10612971","usgsCitation":"Aldous, A., McCormick, P., Ferguson, C., Graham, S., and Craft, C., 2005, Hydrologic regime controls soil phosphorus fluxes in restoration and undisturbed wetlands: Restoration Ecology, v. 13, no. 2, p. 341-347, https://doi.org/10.1111/j.1526-100X.2005.00043.x.","startPage":"341","endPage":"347","numberOfPages":"7","costCenters":[],"links":[{"id":477899,"rank":10000,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.1111/j.1526-100x.2005.00043.x","text":"Publisher Index Page"},{"id":237443,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210505,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1111/j.1526-100X.2005.00043.x"}],"volume":"13","issue":"2","noUsgsAuthors":false,"publicationDate":"2005-05-24","publicationStatus":"PW","scienceBaseUri":"505a367fe4b0c8380cd6076d","contributors":{"authors":[{"text":"Aldous, A.","contributorId":105517,"corporation":false,"usgs":true,"family":"Aldous","given":"A.","email":"","affiliations":[],"preferred":false,"id":422307,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"McCormick, P.","contributorId":30022,"corporation":false,"usgs":true,"family":"McCormick","given":"P.","email":"","affiliations":[],"preferred":false,"id":422304,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Ferguson, C.","contributorId":18960,"corporation":false,"usgs":true,"family":"Ferguson","given":"C.","email":"","affiliations":[],"preferred":false,"id":422303,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Graham, S.","contributorId":70988,"corporation":false,"usgs":true,"family":"Graham","given":"S.","affiliations":[],"preferred":false,"id":422306,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Craft, C.","contributorId":67712,"corporation":false,"usgs":true,"family":"Craft","given":"C.","email":"","affiliations":[],"preferred":false,"id":422305,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":70029330,"text":"70029330 - 2005 - Vertical cross contamination of trichloroethylene in a borehole in fractured sandstone","interactions":[],"lastModifiedDate":"2019-10-16T16:58:21","indexId":"70029330","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1861,"text":"Ground Water","active":true,"publicationSubtype":{"id":10}},"title":"Vertical cross contamination of trichloroethylene in a borehole in fractured sandstone","docAbstract":"<div class=\"abstract-group\"><div class=\"article-section__content en main\"><p>Boreholes drilled through contaminated zones in fractured rock create the potential for vertical movement of contaminated ground water between fractures. The usual assumption is that purging eliminates cross contamination; however, the results of a field study conducted in a trichloroethylene (TCE) plume in fractured sandstone with a mean matrix porosity of 13% demonstrates that matrix‐diffusion effects can be strong and persistent. A deep borehole was drilled to 110 m below ground surface (mbgs) near a shallow bedrock well containing high TCE concentrations. The borehole was cored continuously to collect closely spaced samples of rock for analysis of TCE concentrations. Geophysical logging and flowmetering were conducted in the open borehole, and a removable multilevel monitoring system was installed to provide hydraulic‐head and ground water samples from discrete fracture zones. The borehole was later reamed to complete a well screened from 89 to 100 mbgs; persistent TCE concentrations at this depth ranged from 2100 to 33,000 μg/L. Rock‐core analyses, combined with the other types of borehole information, show that nearly all of this deep contamination was due to the lingering effects of the downward flow of dissolved TCE from shallower depths during the few days of open‐hole conditions that existed prior to installation of the multilevel system. This study demonstrates that transfer of contaminant mass to the matrix by diffusion can cause severe cross contamination effects in sedimentary rocks, but these effects generally are not identified from information normally obtained in fractured‐rock investigations, resulting in potential misinterpretation of site conditions.</p></div></div>","language":"English","publisher":"Wiley","doi":"10.1111/j.1745-6584.2005.0087.x","issn":"0017467X","usgsCitation":"Sterling, S., Parker, B., Cherry, J.A., Williams, J., Lane, J., and Haeni, F., 2005, Vertical cross contamination of trichloroethylene in a borehole in fractured sandstone: Ground Water, v. 43, no. 4, p. 557-573, https://doi.org/10.1111/j.1745-6584.2005.0087.x.","productDescription":"17 p.","startPage":"557","endPage":"573","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":237373,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"43","issue":"4","noUsgsAuthors":false,"publicationDate":"2005-07-04","publicationStatus":"PW","scienceBaseUri":"505bc22ee4b08c986b32a998","contributors":{"authors":[{"text":"Sterling, S.N.","contributorId":63601,"corporation":false,"usgs":true,"family":"Sterling","given":"S.N.","email":"","affiliations":[],"preferred":false,"id":422287,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parker, B.L.","contributorId":51971,"corporation":false,"usgs":true,"family":"Parker","given":"B.L.","email":"","affiliations":[],"preferred":false,"id":422286,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cherry, J. A.","contributorId":24880,"corporation":false,"usgs":true,"family":"Cherry","given":"J.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":422284,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Williams, J.H.","contributorId":29482,"corporation":false,"usgs":true,"family":"Williams","given":"J.H.","email":"","affiliations":[],"preferred":false,"id":422285,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Lane, J.W. Jr.","contributorId":66723,"corporation":false,"usgs":true,"family":"Lane","given":"J.W.","suffix":"Jr.","email":"","affiliations":[],"preferred":false,"id":422288,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Haeni, F.P.","contributorId":87105,"corporation":false,"usgs":true,"family":"Haeni","given":"F.P.","affiliations":[],"preferred":false,"id":422289,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70029288,"text":"70029288 - 2005 - The composition of coexisting jarosite-group minerals and water from the Richmond mine, Iron Mountain, California","interactions":[],"lastModifiedDate":"2018-10-31T09:22:55","indexId":"70029288","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1177,"text":"Canadian Mineralogist","active":true,"publicationSubtype":{"id":10}},"title":"The composition of coexisting jarosite-group minerals and water from the Richmond mine, Iron Mountain, California","docAbstract":"<p><span>Jarosite-group minerals accumulate in the form of stalactites and fine-grained mud on massive pyrite in the D drift of the Richmond mine, Iron Mountain, California. Water samples were collected by placing beakers under the dripping stalactites and by extracting pore water from the mud using a centrifuge. The water is rich in Fe</span><sup>3+</sup><span><span>&nbsp;</span>and SO</span><sub>4</sub><span>&nbsp;</span><sup>2−</sup><span>, with a pH of approximately 2.1, which is significantly higher than the extremely acidic waters found elsewhere in the mine. Electron-microprobe analysis and X-ray mapping indicate that the small crystals (&lt;10 μm in diameter) are compositionally zoned with respect to Na and K, and include hydronium jarosite corresponding to the formula (H</span><sub>3</sub><span>O)</span><sub>0.6</sub><span>K</span><sub>0.3</sub><span>Na</span><sub>0.1</sub><span>Fe</span><sub>3</sub><span>&nbsp;</span><sup>3+</sup><span>(SO</span><sub>4</sub><span>)</span><sub>2</sub><span>(OH)</span><sub>6</sub><span>. The proton-microprobe analyses indicate that the jarosite-group minerals contain significant amounts of As, Pb and Zn, and minor levels of Bi, Rb, Sb, Se, Sn and Sr. Speciation modeling indicates that the drip waters are supersaturated with respect to jarosite-group minerals. The expected range in composition of jarosite-group solid-solution in equilibrium with the pore water extracted from the mud was found to be consistent with the observed range in composition.</span></p>","language":"English","publisher":"Mineralogical Associaion of Canada","doi":"10.2113/gscanmin.43.4.1225","usgsCitation":"Jamieson, H.E., Robinson, C., Alpers, C.N., Nordstrom, D.K., Poustovetov, A., and Lowers, H., 2005, The composition of coexisting jarosite-group minerals and water from the Richmond mine, Iron Mountain, California: Canadian Mineralogist, v. 43, no. 4, p. 1225-1242, https://doi.org/10.2113/gscanmin.43.4.1225.","productDescription":"18 p.","startPage":"1225","endPage":"1242","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"links":[{"id":237874,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Iron Mountain","volume":"43","issue":"4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505baa4be4b08c986b3227b6","contributors":{"authors":[{"text":"Jamieson, Heather E.","contributorId":150176,"corporation":false,"usgs":false,"family":"Jamieson","given":"Heather","email":"","middleInitial":"E.","affiliations":[{"id":7029,"text":"Queen's University, Kingston, Ontario, Canada","active":true,"usgs":false}],"preferred":false,"id":422084,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Robinson, Clare","contributorId":195273,"corporation":false,"usgs":false,"family":"Robinson","given":"Clare","email":"","affiliations":[],"preferred":false,"id":422086,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Alpers, Charles N. 0000-0001-6945-7365 cnalpers@usgs.gov","orcid":"https://orcid.org/0000-0001-6945-7365","contributorId":411,"corporation":false,"usgs":true,"family":"Alpers","given":"Charles","email":"cnalpers@usgs.gov","middleInitial":"N.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":422088,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Nordstrom, D. Kirk 0000-0003-3283-5136 dkn@usgs.gov","orcid":"https://orcid.org/0000-0003-3283-5136","contributorId":749,"corporation":false,"usgs":true,"family":"Nordstrom","given":"D.","email":"dkn@usgs.gov","middleInitial":"Kirk","affiliations":[{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":false,"id":422087,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Poustovetov, Alexei","contributorId":68516,"corporation":false,"usgs":false,"family":"Poustovetov","given":"Alexei","email":"","affiliations":[],"preferred":false,"id":422085,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Lowers, Heather A. hlowers@usgs.gov","contributorId":149265,"corporation":false,"usgs":true,"family":"Lowers","given":"Heather A.","email":"hlowers@usgs.gov","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":422083,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":70029239,"text":"70029239 - 2005 - Numerical methods for improving sensitivity analysis and parameter estimation of virus transport simulated using sorptive-reactive processes","interactions":[],"lastModifiedDate":"2012-03-12T17:20:54","indexId":"70029239","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":2233,"text":"Journal of Contaminant Hydrology","active":true,"publicationSubtype":{"id":10}},"title":"Numerical methods for improving sensitivity analysis and parameter estimation of virus transport simulated using sorptive-reactive processes","docAbstract":"Using one- and two-dimensional homogeneous simulations, this paper addresses challenges associated with sensitivity analysis and parameter estimation for virus transport simulated using sorptive-reactive processes. Head, flow, and conservative- and virus-transport observations are considered. The paper examines the use of (1) observed-value weighting, (2) breakthrough-curve temporal moment observations, and (3) the significance of changes in the transport time-step size. The results suggest that (1) sensitivities using observed-value weighting are more susceptible to numerical solution variability, (2) temporal moments of the breakthrough curve are a more robust measure of sensitivity than individual conservative-transport observations, and (3) the transport-simulation time step size is more important than the inactivation rate in solution and about as important as at least two other parameters, reflecting the ease with which results can be influenced by numerical issues. The approach presented allows more accurate evaluation of the information provided by observations for estimation of parameters and generally improves the potential for reasonable parameter-estimation results. ?? 2004 Elsevier B.V. All rights reserved.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Journal of Contaminant Hydrology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1016/j.jconhyd.2004.10.001","issn":"01697722","usgsCitation":"Barth, G., and Hill, M.C., 2005, Numerical methods for improving sensitivity analysis and parameter estimation of virus transport simulated using sorptive-reactive processes: Journal of Contaminant Hydrology, v. 76, no. 3-4, p. 251-277, https://doi.org/10.1016/j.jconhyd.2004.10.001.","startPage":"251","endPage":"277","numberOfPages":"27","costCenters":[],"links":[{"id":210638,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1016/j.jconhyd.2004.10.001"},{"id":237622,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"76","issue":"3-4","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a68ede4b0c8380cd73a89","contributors":{"authors":[{"text":"Barth, G.","contributorId":7069,"corporation":false,"usgs":true,"family":"Barth","given":"G.","email":"","affiliations":[],"preferred":false,"id":421880,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hill, M. C.","contributorId":48993,"corporation":false,"usgs":true,"family":"Hill","given":"M.","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":421881,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029164,"text":"70029164 - 2005 - Radiation pattern of a borehole radar antenna","interactions":[],"lastModifiedDate":"2018-10-31T10:20:34","indexId":"70029164","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1808,"text":"Geophysics","active":true,"publicationSubtype":{"id":10}},"title":"Radiation pattern of a borehole radar antenna","docAbstract":"<p>The finite-difference time-domain method was used to simulate radar waves that were generated by a transmitting antenna inside a borehole. The simulations were of four different models that included features such as a water-filled borehole and an antenna with resistive loading. For each model, radiation patterns for the far-field region were calculated. The radiation patterns show that the amplitude of the radar wave was strongly affected by its frequency, the water-filled borehole, the resistive loading of the antenna, and the external metal parts of the antenna (e.g., the cable head and the battery pack). For the models with a water-filled borehole, their normalized radiation patterns were practically identical to the normalized radiation pattern of a finite-length electric dipole when the wavelength in the formation was significantly greater than the total length of the radiating elements of the model antenna. The minimum wavelength at which this criterion was satisfied depended upon the features of the antenna, especially its external metal parts.</p>","language":"English","publisher":"GSW","doi":"10.1190/1.1852779","issn":"00168033","usgsCitation":"Ellefsen, K., and Wright, D., 2005, Radiation pattern of a borehole radar antenna: Geophysics, v. 70, no. 1, p. K1-K11, https://doi.org/10.1190/1.1852779.","productDescription":"11 p.","startPage":"K1","endPage":"K11","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":210634,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1190/1.1852779"},{"id":237617,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"70","issue":"1","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"505a9395e4b0c8380cd80ef9","contributors":{"authors":[{"text":"Ellefsen, K.J. 0000-0003-3075-4703","orcid":"https://orcid.org/0000-0003-3075-4703","contributorId":12061,"corporation":false,"usgs":true,"family":"Ellefsen","given":"K.J.","affiliations":[],"preferred":false,"id":421595,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wright, D.L.","contributorId":88758,"corporation":false,"usgs":true,"family":"Wright","given":"D.L.","email":"","affiliations":[],"preferred":false,"id":421596,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029092,"text":"70029092 - 2005 - Submarine groundwater discharge to a small estuary estimated from radon and salinity measurements and a box model","interactions":[],"lastModifiedDate":"2018-08-07T12:52:38","indexId":"70029092","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1012,"text":"Biogeosciences Discussions","active":true,"publicationSubtype":{"id":10}},"title":"Submarine groundwater discharge to a small estuary estimated from radon and salinity measurements and a box model","docAbstract":"<p><span>Submarine groundwater discharge was quantified by a variety of methods for a 4-day period during the early summer of 2004, in Salt Pond, adjacent to Nauset Marsh, on Cape Cod, USA. Discharge estimates based on radon and salinity took advantage of the presence of the narrow channel connecting Salt Pond to Nauset Marsh, which allowed constructing whole-pond mass balances as water flowed in and out due to tidal fluctuations. The data suggest that less than one quarter of the discharge in the vicinity of Salt Pond happened within the pond itself, while three quarters or more of the discharge occurred immediately seaward of the pond, either in the channel or in adjacent regions of Nauset Marsh. Much of this discharge, which maintains high radon activities and low salinity, is carried into the pond during each incoming tide. A box model was used as an aid to understand both the rates and the locations of discharge in the vicinity of Salt Pond. The model achieves a reasonable fit to both the salinity and radon data assuming submarine groundwater discharge is fresh and that most of it occurs either in the channel or in adjacent regions of Nauset Marsh. Salinity and radon data, together with seepage meter results, do not rule out discharge of saline groundwater, but suggest either that the saline discharge is at most comparable in volume to the fresh discharge or that it is depleted in radon. The estimated rate of fresh groundwater discharge in the vicinity of Salt Pond is 3000-7000 m</span><sup>3</sup><span>&nbsp;d</span><sup>-1</sup><span>. This groundwater flux estimated from the radon and salinity data is comparable to a value of 3200-4500 m</span><sup>3</sup><span>&nbsp;d</span><sup>-1</sup><span>&nbsp;predicted by a recent hydrologic model (Masterson, 2004; Colman and Masterson, 2004), although the model predicts this rate of discharge to the pond whereas our data suggest most of the groundwater bypasses the pond prior to discharge. Additional work is needed to determine if the measured rate of discharge is representative of the long-term average, and to better constrain the rate of groundwater discharge seaward of Salt Pond.</span></p>","language":"English","publisher":"EGU","doi":"10.5194/bg-2-141-2005","issn":"18106277","usgsCitation":"Crusius, J., Koopmans, D., Bratton, J.F., Charette, M., Kroeger, K., Henderson, P., Ryckman, L., Halloran, K., and Colman, J.A., 2005, Submarine groundwater discharge to a small estuary estimated from radon and salinity measurements and a box model: Biogeosciences Discussions, v. 2, no. 1, p. 141-157, https://doi.org/10.5194/bg-2-141-2005.","productDescription":"17 p.","startPage":"141","endPage":"157","costCenters":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":477963,"rank":1,"type":{"id":40,"text":"Open Access Publisher Index Page"},"url":"https://doi.org/10.5194/bg-2-141-2005","text":"Publisher Index Page"},{"id":237648,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"2","issue":"1","noUsgsAuthors":false,"publicationDate":"2005-06-24","publicationStatus":"PW","scienceBaseUri":"505b9d28e4b08c986b31d693","contributors":{"authors":[{"text":"Crusius, John 0000-0003-2554-0831 jcrusius@usgs.gov","orcid":"https://orcid.org/0000-0003-2554-0831","contributorId":2155,"corporation":false,"usgs":true,"family":"Crusius","given":"John","email":"jcrusius@usgs.gov","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":421294,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Koopmans, D.","contributorId":33914,"corporation":false,"usgs":true,"family":"Koopmans","given":"D.","email":"","affiliations":[],"preferred":false,"id":421293,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bratton, John F. 0000-0003-0376-4981 jbratton@usgs.gov","orcid":"https://orcid.org/0000-0003-0376-4981","contributorId":92757,"corporation":false,"usgs":true,"family":"Bratton","given":"John","email":"jbratton@usgs.gov","middleInitial":"F.","affiliations":[{"id":678,"text":"Woods Hole Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":421299,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Charette, M.A.","contributorId":62014,"corporation":false,"usgs":true,"family":"Charette","given":"M.A.","email":"","affiliations":[],"preferred":false,"id":421296,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kroeger, K.D.","contributorId":26060,"corporation":false,"usgs":true,"family":"Kroeger","given":"K.D.","email":"","affiliations":[],"preferred":false,"id":421292,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Henderson, P.","contributorId":83735,"corporation":false,"usgs":true,"family":"Henderson","given":"P.","email":"","affiliations":[],"preferred":false,"id":421298,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Ryckman, L.","contributorId":100184,"corporation":false,"usgs":true,"family":"Ryckman","given":"L.","email":"","affiliations":[],"preferred":false,"id":421300,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Halloran, K.","contributorId":59616,"corporation":false,"usgs":true,"family":"Halloran","given":"K.","affiliations":[],"preferred":false,"id":421295,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Colman, John A. 0000-0001-9327-0779 jacolman@usgs.gov","orcid":"https://orcid.org/0000-0001-9327-0779","contributorId":2098,"corporation":false,"usgs":true,"family":"Colman","given":"John","email":"jacolman@usgs.gov","middleInitial":"A.","affiliations":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true},{"id":376,"text":"Massachusetts Water Science Center","active":true,"usgs":true}],"preferred":true,"id":421297,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}}
,{"id":70029091,"text":"70029091 - 2005 - Differences in dissolved cadmium and zinc uptake among stream insects: Mechanistic explanations","interactions":[],"lastModifiedDate":"2018-10-31T08:39:35","indexId":"70029091","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Differences in dissolved cadmium and zinc uptake among stream insects: Mechanistic explanations","docAbstract":"This study examined the extent to which dissolved Cd and Zn uptake rates vary in several aquatic insect taxa commonly used as indicators of ecological health. We further attempted to explain the mechanisms underlying observed differences. By comparing dissolved Cd and Zn uptake rates in several aquatic insect species, we demonstrated that species vary widely in these processes. Dissolved uptake rates were not related to gross morphological features such as body size or gill size-features that influence water permeability and therefore have ionoregulatory importance. However, finer morphological features, specifically, the relative numbers of ionoregulatory cells (chloride cells), appeared to be related to dissolved metal uptake rates. This observation was supported by Michaelis-Menten type kinetics experiments, which showed that dissolved Cd uptake rates were driven by the numbers of Cd transporters and not by the affinities of those transporters to Cd. Calcium concentrations in exposure media similarly affected Cd and Zn uptake rates in the caddisfly Hydropsyche californica. Dissolved Cd and Zn uptake rates strongly co-varied among species, suggesting that these metals are transported by similar mechanisms.","language":"English","publisher":"ACS","doi":"10.1021/es0404421","issn":"0013936X","usgsCitation":"Buchwalter, D., and Luoma, S., 2005, Differences in dissolved cadmium and zinc uptake among stream insects: Mechanistic explanations: Environmental Science & Technology, v. 39, no. 2, p. 498-504, https://doi.org/10.1021/es0404421.","productDescription":"7 p.","startPage":"498","endPage":"504","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":237613,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":210633,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es0404421"}],"volume":"39","issue":"2","noUsgsAuthors":false,"publicationDate":"2004-11-26","publicationStatus":"PW","scienceBaseUri":"505a00ede4b0c8380cd4f9ca","contributors":{"authors":[{"text":"Buchwalter, D.B.","contributorId":20053,"corporation":false,"usgs":true,"family":"Buchwalter","given":"D.B.","email":"","affiliations":[],"preferred":false,"id":421290,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Luoma, S. N.","contributorId":86353,"corporation":false,"usgs":true,"family":"Luoma","given":"S. N.","affiliations":[],"preferred":false,"id":421291,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":70029041,"text":"70029041 - 2005 - Speciation of mercury and mode of transport from placer gold mine tailings","interactions":[],"lastModifiedDate":"2012-03-12T17:20:57","indexId":"70029041","displayToPublicDate":"2005-01-01T00:00:00","publicationYear":"2005","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1565,"text":"Environmental Science & Technology","onlineIssn":"1520-5851","printIssn":"0013-936X","active":true,"publicationSubtype":{"id":10}},"title":"Speciation of mercury and mode of transport from placer gold mine tailings","docAbstract":"Historic placer gold mining in the Clear Creek tributary to the Sacramento River (Redding, CA) has highly impacted the hydrology and ecology of an important salmonid spawning stream. Restoration of the watershed utilized dredge tailings contaminated with mercury (Hg) introduced during gold mining, posing the possibility of persistent Hg release to the surrounding environment, including the San Francisco Bay Delta. Column experiments have been performed to evaluate the extent of Hg transport under chemical conditions potentially similar to those in river restoration projects utilizing dredge tailings such as at Clear Creek. Physicochemical perturbations, in the form of shifts in column influent ionic strength and the presence of a low molecular weight organic acid, were applied to coarse and fine sand placer tailings containing 109-194 and 69-90 ng of Hg/g, respectively. Significant concentrations of mercury, up to 16 ??g/L, leach from these sediments in dissolved and particle-associated forms. Sequential chemical extractions (SCE) of these tailings indicate that elemental Hg initially introduced during gold mining has been transformed to readily soluble species, such as mercury oxides and chlorides (3-4%), intermediately extractable phases that likely include (in)organic sorption complexes and amalgams (75-87%), and fractions of highly insoluble forms such as mercury sulfides (6-20%; e.g., cinnabar and metacinnabar). Extended X-ray absorption fine structure (EXAFS) spectroscopic analysis of colloids obtained from column effluent identified cinnabar particles as the dominant mobile mercury-bearing phase. The fraction of intermediately extractable Hg phases also likely includes mobile colloids to which Hg is adsorbed. ?? 2005 American Chemical Society.","largerWorkType":{"id":2,"text":"Article"},"largerWorkTitle":"Environmental Science and Technology","largerWorkSubtype":{"id":10,"text":"Journal Article"},"language":"English","doi":"10.1021/es049113z","issn":"0013936X","usgsCitation":"Slowey, A., Rytuba, J.J., and Brown, G.E., 2005, Speciation of mercury and mode of transport from placer gold mine tailings: Environmental Science & Technology, v. 39, no. 6, p. 1547-1554, https://doi.org/10.1021/es049113z.","startPage":"1547","endPage":"1554","numberOfPages":"8","costCenters":[],"links":[{"id":209751,"rank":9999,"type":{"id":10,"text":"Digital Object Identifier"},"url":"https://dx.doi.org/10.1021/es049113z"},{"id":236453,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"39","issue":"6","noUsgsAuthors":false,"publicationDate":"2005-01-26","publicationStatus":"PW","scienceBaseUri":"505b94ece4b08c986b31acc0","contributors":{"authors":[{"text":"Slowey, A.J.","contributorId":9445,"corporation":false,"usgs":true,"family":"Slowey","given":"A.J.","affiliations":[],"preferred":false,"id":421069,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Rytuba, J. J.","contributorId":83082,"corporation":false,"usgs":true,"family":"Rytuba","given":"J.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":421071,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, Gordon E. Jr.","contributorId":10166,"corporation":false,"usgs":true,"family":"Brown","given":"Gordon","suffix":"Jr.","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":421070,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
]}