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: 2018
Shoreline features of Titan's Ontario Lacus from Cassini/VIMS observations Shoreline features of Titan's Ontario Lacus from Cassini/VIMS observations
We analyze observations of Titan's south polar lake Ontario Lacus obtained by Cassini's Visual and Infrared Mapping Spectrometer during the 38th flyby of Titan (T38; 2007 December 5). These near-closest-approach observations have the highest signal-to-noise, the finest spatial resolution, and the least atmospheric influence of any near-infrared lake observation to date. We use the large...
Authors
J. W. Barnes, R. Brown, J.M. Soderblom, L.A. Soderblom, R. Jaumann, B. Jackson, Stéphane Le Mouélic, Christophe Sotin, B. J. Buratti, K.M. Pitman, K. H. Baines, R. N. Clark, P. Nicholson, E. P. Turtle, J. Perry
Discovery of lake-effect clouds on Titan Discovery of lake-effect clouds on Titan
Images from instruments on Cassini as well as from telescopes on the ground reveal the presence of sporadic small-scale cloud activity in the cold late-winter north polar region of Saturn's large moon Titan. These clouds lie underneath the previously discovered uniform polar cloud attributed to a quiescent ethane cloud at ???40 km and appear confined to the same latitudes as those of the...
Authors
M.E. Brown, E.L. Schaller, H.G. Roe, C. Chen, J. Roberts, R. Brown, K. H. Baines, R. N. Clark
VIMS spectral mapping observations of Titan during the Cassini prime mission VIMS spectral mapping observations of Titan during the Cassini prime mission
This is a data paper designed to facilitate the use of and comparisons to Cassini/visual and infrared mapping spectrometer (VIMS) spectral mapping data of Saturn's moon Titan. We present thumbnail orthographic projections of flyby mosaics from each Titan encounter during the Cassini prime mission, 2004 July 1 through 2008 June 30. For each flyby we also describe the encounter geometry...
Authors
J. W. Barnes, J.M. Soderblom, R. Brown, B. J. Buratti, Christophe Sotin, K. H. Baines, R. N. Clark, R. Jaumann, T. B. McCord, R. Nelson, Stéphane Le Mouélic, S. Rodriguez, C. Griffith, P. Penteado, F. Tosi, K.M. Pitman, L. Soderblom, K. Stephan, P. Hayne, G. Vixie, J.-P. Bibring, G. Bellucci, F. Capaccioni, P. Cerroni, A. Coradini, D. P. Cruikshank, P. Drossart, V. Formisano, Y. Langevin, D. L. Matson, P. Nicholson, B. Sicardy
Temporal Geochemistry Data from Five Springs in the Cement Creek Watershed, San Juan County, Colorado Temporal Geochemistry Data from Five Springs in the Cement Creek Watershed, San Juan County, Colorado
Temporal data from five springs in the Cement Creek watershed, San Juan County, Colorado provide seasonal geochemical data for further research in the formation of ferricretes. In addition, these data can be used to help understand the ground-water flow system. The resulting data demonstrate the difficulty in gathering reliable seasonal data from springs, show the unique geochemistry of...
Authors
Raymond H. Johnson, Laurie Wirt, Kenneth J. Leib
Electrical Resistivity and Seismic Surveys at the Nevada Test Site, Nevada, April 2007 Electrical Resistivity and Seismic Surveys at the Nevada Test Site, Nevada, April 2007
In April 2007, the USGS collected direct-current (DC) electrical resistivity data and shear- (S) and compressional- (P) wave seismic data to provide new detail of previously mapped, overlapping fault splays at two administrative areas in the Nevada Test Site (NTS). In NTS Area 7, we collected two-dimensional DC resistivity data along a transect crossing the Yucca Fault parallel to, and...
Authors
Seth S. Haines, Bethany L. Burton, Donald S. Sweetkind, Theodore H. Asch
Analytical Results for Municipal Biosolids Samples from a Monitoring Program near Deer Trail, Colorado (U.S.A.), 2007 Analytical Results for Municipal Biosolids Samples from a Monitoring Program near Deer Trail, Colorado (U.S.A.), 2007
Since late 1993, the Metro Wastewater Reclamation District of Denver (Metro District), a large wastewater treatment plant in Denver, Colorado, has applied Grade I, Class B biosolids to about 52,000 acres of nonirrigated farmland and rangeland near Deer Trail, Colorado (U.S.A.). In cooperation with the Metro District in 1993, the U.S. Geological Survey (USGS) began monitoring ground water...
Authors
J.G. Crock, D. B. Smith, T. J. B. Yager, C. J. Berry, M. G. Adams
Radionuclide Data and Calculations and Loss-On-Ignition, X-Ray Fluorescence, and ICP-AES Data from Cores in Catchments of the Animas River, Colorado Radionuclide Data and Calculations and Loss-On-Ignition, X-Ray Fluorescence, and ICP-AES Data from Cores in Catchments of the Animas River, Colorado
The U.S. Departments of Agriculture and Interior Abandoned Mine Lands (AML) Initiative is focused on the evaluation of the effect of past mining practices on the water quality and the riparian and aquatic habitats of impacted stream reaches downstream from historical mining districts located primarily on Federal lands. This problem is manifest in the eleven western states (west of...
Authors
Stan E. Church, Cyndi A. Rice, Marci E. Marot
Results of Gravity Fieldwork Conducted in March 2008 in the Moapa Valley Region of Clark County, Nevada Results of Gravity Fieldwork Conducted in March 2008 in the Moapa Valley Region of Clark County, Nevada
In March 2008, we collected gravity data along 12 traverses across newly-mapped faults in the Moapa Valley region of Clark County, Nevada. In areas crossed by these faults, the traverses provide better definition of the gravity field and, thus, the density structure, than prior gravity observations. Access problems prohibited complete gravity coverage along all of the planned gravity...
Authors
Daniel S. Scheirer, Arne Dossing Andreasen
Understanding contaminants associated with mineral deposits Understanding contaminants associated with mineral deposits
Interdisciplinary studies by the U.S. Geological Survey (USGS) have resulted in substantial progress in understanding the processes that controlthe release of metals and acidic water from inactive mines and mineralized areas,the transport of metals and acidic water to streams, andthe fate and effect of metals and acidity on downstream ecosystems. The potential environmental effects...
Authors
Philip L. Verplanck
Geological, geochemical, and geophysical studies by the U.S. Geological Survey in Big Bend National Park, Texas Geological, geochemical, and geophysical studies by the U.S. Geological Survey in Big Bend National Park, Texas
Big Bend National Park (BBNP), Tex., covers 801,163 acres (3,242 km2) and was established in 1944 through a transfer of land from the State of Texas to the United States. The park is located along a 118-mile (190-km) stretch of the Rio Grande at the United States-Mexico border. The park is in the Chihuahuan Desert, an ecosystem with high mountain ranges and basin environments containing...
Authors
W. R. Page, K. J. Turner, R. G. Bohannon, M. E. Berry, V. S. Williams, D. P. Miggins, M. Ren, E. Y. Anthony, L. A. Morgan, P. W. C. Shanks, J. E. Gray, P. M. Theodorakos, David P. Krabbenhoft, A. H. Manning, P. A. Gemery-Hill, E. C. Hellgren, C. A. Stricker, D. P. Onorato, C. A. Finn, E. Anderson
Devonian carbonate platform of eastern Nevada: Facies, surfaces, cycles, sequences, reefs, and cataclysmic Alamo Impact Breccia Devonian carbonate platform of eastern Nevada: Facies, surfaces, cycles, sequences, reefs, and cataclysmic Alamo Impact Breccia
Devonian limestone and dolostone formations are superbly exposed in numerous mountain ranges of southeastern Nevada. The Devonian is as thick as 1500 m there and reveals continuous exposures of a classic, long-lived, shallow-water carbonate platform. This field guide provides excursions to Devonian outcrops easily reached from the settlement of Alamo, Nevada, ~100 mi (~160 km) north of...
Authors
John E. Warme, Jared R. Morrow, Charles Sandberg
Gravity Data from Dry Lake and Delamar Valleys, east-central Nevada Gravity Data from Dry Lake and Delamar Valleys, east-central Nevada
Cenozoic basins in eastern Nevada and western Utah constitute major ground-water recharge areas in the eastern part of the Great Basin, and our continuing studies are intended to characterize the geologic framework of the region. Prior to these investigations, regional gravity coverage was variable over the region, adequate in some areas and very sparse in others. The current study in...
Authors
Edward A. Mankinen, Bruce A. Chuchel, Barry C. Moring