Ecoregions and land cover trends in Senegal
G. Gray Tappan, M. Sall, E.C. Wood, Matthew Cushing
2004, Journal of Arid Environments (59) 427-462
This study examines long-term changes in Senegal's natural resources. We monitor and quantify land use and land cover changes occurring across Senegal using nearly 40 years of satellite imagery, aerial surveys, and fieldwork. We stratify Senegal into ecological regions and present land use and land cover trends for each region,...
Seepage study of Mapleton Lateral Canal near Mapleton, Utah, 2003
Chris D. Wilkowske, Jeff V. Phillips
2004, Scientific Investigations Report 2004-5210
A study was conducted during the summer of 2003 on Mapleton Lateral Canal near Mapleton, Utah, to determine gain or loss of flow in the canal from seepage. Measurements were made in May, June, July, and September of 2003. The uppermost reach of the canal had an apparent average loss...
Ground-water quality of selected basin-fill aquifers of the Northern Rockies Intermontane Basins in Montana, Idaho, and Washington
Rodney R. Caldwell, Craig L. Bowers, DeAnn M. Dutton
2004, Scientific Investigations Report 2004-5052
Sediment remobilization of Mercury in South San Francisco Bay, California
Brent R. Topping, James S. Kuwabara, Mark C. Marvin-DisPasquale, Jennifer L. Agee, Le H. Kieu, John R. Flanders, Francis Parcheso, Stephen W. Hager, Cary B. Lopez, David P. Krabbenhoft
2004, Scientific Investigations Report 2004-5196
No abstract available....
Biological assessment of streams in the Indianapolis Metropolitan Area, Indiana, 1999-2001
David C. Voelker
2004, Water-Resources Investigations Report 2003-4331
During 1999?2001, benthic invertebrates and fish were sampled to describe biological communities in the White River and selected tributaries in the Indianapolis Metropolitan Area in Indiana. Twelve sites (six on the White River and six on tributaries) were sampled biannually for benthic invertebrates and annually for fish. The information complements...
Preliminary geologic map of the El Cajon 30' x 60' quadrangle, Southern California
Victoria R. Todd (compiler)
2004, Open-File Report 2004-1361
This data set maps and describes the geology of the El Cajon 30' x 60' quadrangle, southern California. Compilation of the El Cajon quadrangle is based upon published mapping at various scales, unpublished mapping at 1:24,000 scale, and reconnaissance mapping. Mapping was done by fieldwork and the use...
Death Valley regional ground-water flow system, Nevada and California -- hydrogeologic framework and transient ground-water flow model
Wayne R. Belcher, editor(s)
2004, Scientific Investigations Report 2004-5205
A numerical three-dimensional (3D) transient ground-water flow model of the Death Valley region was developed by the U.S. Geological Survey for the U.S. Department of Energy programs at the Nevada Test Site and at Yucca Mountain, Nevada. Decades of study of aspects of the ground-water flow system and previous less...
Surface geophysical investigation of the areal and vertical extent of metallic waste at the former Tyson Valley Powder Farm near Eureka, Missouri, Spring 2004
Lyndsay B. Ball, Wade H. Kress, Eric D. Anderson, Andrew Teeple, James W. Ferguson, Charles R. Colbert
2004, Scientific Investigations Report 2004-5208
The former Tyson Valley Powder Farm near Eureka, Missouri, was used primarily as a storage facility for the production of small arms ammunition during 1941?47 and 1951?61. A secondary use of the site was for munitions testing and disposal. Surface exposures of small arms waste, characterized by brass shell casings...
Water-quality and biological conditions in the Lower Boise River, Ada and Canyon Counties, Idaho, 1994-2002
Dorene E. MacCoy
2004, Scientific Investigations Report 2004-5128
The water quality and biotic integrity of the lower Boise River between Lucky Peak Dam and the river's mouth near Parma, Idaho, have been affected by agricultural land and water use, wastewater treatment facility discharge, urbanization, reservoir operations, and river channel alteration. The U.S. Geological Survey (USGS) and cooperators have...
Whole rock geochemical data For paleozoic sedimentary rocks of the western Brooks Range, Alaska
John F. Slack, Jeanine M. Schmidt, Julie A. Dumoulin
2004, Open-File Report 2004-1371
Ground-water hydrology and water quality of the southern high plains aquifer, Melrose Air Force Range, Cannon Air Force Base, Curry and Roosevelt Counties, New Mexico, 2002-03
Jeff B. Langman, Fredrick E. Gebhardt, Sarah E. Falk
2004, Scientific Investigations Report 2004-5158
In cooperation with the U.S. Air Force, the U.S. Geological Survey characterized the ground-water hydrology and water quality at Melrose Air Force Range in east-central New Mexico. The purpose of the study was to provide baseline data to Cannon Air Force Base resource managers to make informed decisions concerning actions...
Whole rock geochemical data For altered and mineralized rocks, Red Dog Zn-Pb-Ag District, western Brooks Range, Alaska
John F. Slack, Karen D. Kelley, Jeffrey L. Clark
2004, Open-File Report 2004-1372
Occurrence and distribution of trace elements in snow, streams, and streambed sediments, Cape Krusenstern National Monument, Alaska, 2002-2003
Timothy P. Brabets
2004, Scientific Investigations Report 2004-5229
Cape Krusenstern National Monument is located in Northwest Alaska. In 1985, an exchange of lands and interests in lands between the Northwest Alaska Native Association and the United States resulted in a 100-year transportation system easement for 19,747 acres in the monument. A road was then constructed along the easement...
Assessing the susceptibility to contamination of two aquifer systems used for public water supply in the Modesto and Fresno metropolitan areas, California, 2001 and 2002
Michael T. Wright, Kenneth Belitz, Tyler D. Johnson
2004, Scientific Investigations Report 2004-5149
Ground-water samples were collected from 90 active public supply wells in the Fresno and Modesto metropolitan areas as part of the California Aquifer Susceptibility (CAS) program. The CAS program was formed to examine the susceptibility to contamination of aquifers that are tapped by public supply wells to serve the citizens...
Age and source of water in springs associated with the Jacksonville Thrust Fault Complex, Calhoun County, Alabama
James L. Robinson
2004, Scientific Investigations Report 2004-5145
Water from wells and springs accounts for more than 90 percent of the public water supply in Calhoun County, Alabama. Springs associated with the Jacksonville Thrust Fault Complex are used for public water supply for the cities of Anniston and Jacksonville. The largest ground-water supply is Coldwater Spring, the primary...
Development and Calibration of Two-Dimensional Hydrodynamic Model of the Tanana River near Tok, Alaska
Jeffrey S. Conaway, Edward H. Moran
2004, Open-File Report 2004-1225
Bathymetric and hydraulic data were collected by the U.S. Geological Survey on the Tanana River in proximity to Alaska Department of Transportation and Public Facilities' bridge number 505 at mile 80.5 of the Alaska Highway. Data were collected from August 7-9, 2002, over an approximate 5,000- foot reach of the...
Usoi Landslide Dam and Lake Sarez, Pamir Mountains, Tajikistan
Robert L. Schuster, D. Alford
2004, Enviromental and Engineering Geoscience (10) 151-168
In 1911, a 2-km3 (0.5-mi3) earthquake-triggered rock slide blocked the Murgab River, southeastern Tajikistan, forming a still-existing, 600-m-high (1,970-ft-high) natural dam—the highest dam, natural or man-made, in the world. Lake Sarez, impounded by this blockage, is 60 km (37 mi) long, with a maximum depth of 550 m (1,800 ft) and...
Distribution, migration behavior, habitat use, and species interactions of fall-released juvenile hatchery spring Chinook salmon on the Deschutes River, Oregon, 2002, Annual report 2002
Rachel E. Reagan, Patrick J. Connolly, Noah S. Adams, Matthew G. Mesa, Dennis W. Rondorf
2004, Report
In a review of National Fish Hatcheries (NFH), the U.S. Fish and Wildlife Service (USFWS) identified the need to assess the fate of hatchery-reared fish and their potential effect on the aquatic community (USFWS 1998). Additionally, in the Columbia River Biological Opinion, the National Marine Fisheries Service (NMFS) recommended monitoring...
Interpretation of the Miyakejima 2000 eruption and dike emplacement using time animations of earthquakes
Thomas L. Wright, Shin’ichi Sakai
2004, Bulletin of the Earthquake Research Institute (79) 1-16
The seismic sequence of over 12,000 earthquakes accompanying the 2000 eruption of Miyakejima volcano has been studied by viewing time animations of the earthquakes beneath transparent topography. Seismic activity began on the evening of June 26 extending southwest from Miyakejima’s summit. A few...
Natural bitumen and extra-heavy oil
R. F. Meyer, Emil D. Attanasi
2004, Conference Paper
Crude oil is found in sedimentary rocks throughout the world, except, thus far, in Antarctica. In many places the oil has been degraded, so that it is represented by viscous black oil that is difficult to recover, transport, and refine. Depending upon the degree of degradation the result is extra-heavy...
The face of the Moon: Lunar volcanoes and volcanic deposits
Lisa R. Gaddis
Rosaly Lopes, Tracy K. P. Gregg, editor(s)
2004, Book chapter, Volcanic Worlds
No abstract available....
Long term atmospheric deposition as the source of nitrate and other salts in the Atacama Desert, Chile: New evidence from mass-independent oxygen isotopic compositions
Greg Michalski, J. K. Böhlke, Mark Thiemens
2004, Geochimica et Cosmochimica Acta (68) 4023-4038
Isotopic analysis of nitrate and sulfate minerals from the nitrate ore fields of the Atacama Desert in northern Chile has shown anomalous 17O enrichments in both minerals. Δ17O values of 14–21 ‰ in nitrate and 0.4 to 4 ‰ in sulfate are the most positive...
Frequency and initiation of debris flows in Grand Canyon, Arizona
Peter G. Griffiths, Robert Webb, Theodore S. Melis
2004, Journal of Geophysical Research - Earth Surface (109)
Debris flows from 740 tributaries transport sediment into the Colorado River in Grand Canyon, Arizona, creating rapids that control its longitudinal profile. Debris flows mostly occur when runoff triggers failures in colluvium by a process termed “the fire hose effect.” Debris flows originate from a limited number of geologic strata,...
Exploring Martian polar atmospheric circulation and surface interactions
Thomas H. Prettyman, Timothy N. Titus
2004, Eos, Transactions, American Geophysical Union (85) 403-403
The northern and southern seasonal polar caps of Mars are formed in the polar night, during their respective autumn and winter seasons, by the condensation of atmospheric CO2directly to the solid phase as ice, snow, and possibly frost. During spring and summer, the seasonal ice sublimes, returning...
Factors that affect molecular weight distribution of Suwannee river fulvic acid as determined by electrospray ionization/mass spectrometry
Colleen E. Rostad, Jerry A. Leenheer
2004, Analytica Chimica Acta (523) 269-278
Effects of methylation, molar response, multiple charging, solvents, and positive and negative ionization on molecular weight distributions of aquatic fulvic acid were investigated by electrospray ionization/mass spectrometry. After preliminary analysis by positive and negative modes, samples and mixtures of standards were derivatized by methylation to minimize ionization sites and...
