Publications
Products (journal articles, reports, fact sheets) authored by current and past scientists are listed below. Please check the USGS Pubs Warehouse for other USGS publications.
Filter Total Items: 1826
Nitrate sources and sinks in Elkhorn Slough, California: Results from long-term continuous in situ nitrate analyzers
Nitrate and water quality parameters (temperature, salinity, dissolved oxygen, turbidity, and depth) were measured continuously with in situ NO3 analyzers and water quality sondes at two sites in Elkhorn Slough in Central California. The Main Channel site near the mouth of Elkhorn Slough was sampled from February to September 2001. Azevedo Pond, a shallow tidal pond bordering agricultural fields f
Authors
T.P. Chapin, J.M. Caffrey, H.W. Jannasch, L.J. Coletti, J.C. Haskins, K.S. Johnson
Frequency spectral analysis of GPR data over a crude oil spill
A multi-offset ground penetrating radar (GPR) dataset was acquired by the U.S. Geological Survey (USGS) at a crude oil spill site near Bemidji, Minnesota, USA. The dataset consists of two, parallel profiles, each with 17 transmitter-receiver offsets ranging from 0.60 to 5.15m. One profile was acquired over a known oil pool floating on the water table, and the other profile was acquired over an unc
Authors
B.L. Burton, G.R. Olhoeft, M.H. Powers
Cassini/VIMS observation of an Io post-eclipse brightening event
During the Cassini-Jupiter flyby, VIMS observed Io at different phase angles, both in full sunlight and in eclipse. By using the sunlight measurements, we were able to produce phase curves in the visual through all the near infrared wavelengths covered by the VIMS instrument (0.85-5.1 ??m). The phase angle spanned from ???2?? to ???120??. The measurements, done just after Io emerged from Jupiter's
Authors
G. Bellucci, E. D'Aversa, V. Formisano, D. Cruikshank, R.M. Nelson, R. N. Clark, K. H. Baines, D. Matson, R. H. Brown, T. B. McCord, B. J. Buratti, P. D. Nicholson
Principal components analysis of Jupiter VIMS spectra
During Cassini - Jupiter flyby occurred in December 2000, Visual-Infrared mapping spectrometer (VIMS) instrument took several image cubes of Jupiter at different phase angles and distances. We have analysed the spectral images acquired by the VIMS visual channel by means of a principal component analysis technique (PCA). The original data set consists of 96 spectral images in the 0.35-1.05 ??m wav
Authors
G. Bellucci, V. Formisano, E. D'Aversa, R. H. Brown, K. H. Baines, J.-P. Bibring, B. J. Buratti, F. Capaccioni, P. Cerroni, R. N. Clark, A. Coradini, D. P. Cruikshank, P. Drossart, R. Jaumann, Y. Langevin, D. L. Matson, T. B. McCord, V. Mennella, R.M. Nelson, P. D. Nicholson, B. Sicardy, Christophe Sotin, M.C. Chamberlain, G. Hansen, K. Hibbits, M. Showalter, G. Filacchione
Cassini VIMS observations of the Galilean satellites including the VIMS calibration procedure
The Visual and Infrared Mapping Spectrometer (VIMS) observed the Galilean satellites during the Cassini spacecraft's 2000/2001 flyby of Jupiter, providing compositional and thermal information about their surfaces. The Cassini spacecraft approached the jovian system no closer than about 126 Jupiter radii, about 9 million kilometers, at a phase angle of < 90 ??, resulting in only sub-pixel observat
Authors
T. B. McCord, A. Coradini, C. A. Hibbitts, F. Capaccioni, G. B. Hansen, G. Filacchione, R. N. Clark, P. Cerroni, R. H. Brown, K. H. Baines, G. Bellucci, J.-P. Bibring, B. J. Buratti, E. Bussoletti, M. Combes, D. P. Cruikshank, P. Drossart, V. Formisano, R. Jaumann, Y. Langevin, D. L. Matson, R.M. Nelson, P. D. Nicholson, B. Sicardy, Christophe Sotin
Quality and sources of ground water used for public supply in Salt Lake Valley, Salt Lake County, Utah, 2001
Ground water supplies about one-third of the water used by the public in Salt Lake Valley, Utah. The occurrence and distribution of natural and anthropogenic compounds in ground water used for public supply in the valley were evaluated. Water samples were collected from 31 public-supply wells in 2001 and analyzed for major ions, trace elements, radon, nutrients, dissolved organic carbon, methylene
Authors
Susan A. Thiros, Andrew H. Manning
Integrated investigations of environmental effects of historical mining in the Basin and Boulder Mining Districts, Boulder River watershed, Jefferson County, Montana
The Boulder River watershed is one of many watersheds in the western United States where historical mining has left a legacy of acid mine drainage and elevated concentrations of potentially toxic trace elements. Abandoned mine lands commonly are located on or affect Federal land. Cleaning up these Federal lands will require substantial investment of resources. As part of a cooperative effort with
Chapter 8 Petrogenesis and mineralogic residence of selected elements in the meade peak phosphatic shale member of the permian phosphoria formation, Southeast Idaho
The Meade Peak Phosphatic Shale Member of the Permian Phosphoria Formation hosts the ore mined by the phosphate industry of southeast Idaho. It also hosts environmentally sensitive elements (ESE) such as Se, As, Hg, Ni, Cd, Zn, and Cr. Primary chemistry, elemental distribution patterns, and mineralogy within the Meade Peak were modified by element migration and possibly the introduction of element
Authors
Richard I. Grauch, George A. Desborough, Gregory P. Meeker, A. L. Foster, Russell G. Tysdal, J. R. Herring, Heather A. Lowers, B. A. Ball, Robert A. Zielinski, E. A. Johnson
Thermochronology of secondary minerals from the Yucca Mountain unsaturated zone
No abstract available.
Authors
Joseph F. Whelan, Leonid A. Neymark, Edwin Roedder, Richard J. Moscati
Removal of subglacially erupted volcanic edifices beneath the divide of the West Antarctic Ice Sheet interpreted from aeromagnetic and radar ice sounding surveys
No abstract available.
Authors
John C. Behrendt, D. D. Blankenship, D. L. Morse, Carol A. Finn, R. E. Bell
Questa baseline and pre-mining ground water investigation: 11. Geochemistry of composited material from alteration scars and mine-waste piles
Composited, surficial material was collected from alteration scars, a less intensely altered site, and mine-waste piles. All samples were analyzed for forty elements by inductively coupled plasma-atomic emission spectrometry, total sulfur and quantitative X-ray diffraction. This work was performed in cooperation with the New Mexico Environment Department.
Authors
Paul H. Briggs, S. J. Sutley, Keith Eric Livo
Leaching, transport, and methylation of mercury in and around abandoned mercury mines in the Humboldt River basin and surrounding areas, Nevada
Mercury and methylmercury concentrations were measured in mine wastes, stream sediments, and stream waters collected both proximal and distal from abandoned mercury mines to evaluate mercury contamination and mercury methylation in the Humboldt River system. The climate in the study area is arid, and due to the lack of mine-water runoff, water-leaching laboratory experiments were used to evaluate
Authors
John E. Gray, Lisa L. Stillings