Endocranial volume of mid-late eocene archaeocetes (order: cetacea) revealed by computed tomography: Implications for cetacean brain evolution
Lori Marino, Mark D. Uhen, Bruno Frohlich, John Matthew Aldag, Caroline Blane, David Bohaska, F.C. Whitmore Jr.
2000, Journal of Mammalian Evolution (7) 81-94
The large brain of modern cetaceans has engendered much hypothesizing about both the intelligence of cetaceans (dolphins, whales, and porpoises) and the factors related to the evolution of such large brains. Despite much interest in cetacean brain evolution, until recently there have been few estimates of brain mass and/or brain–body...
Ground truth; in-situ properties of hydrate
David S. Goldberg, Timothy S. Collett, Roy D. Hyndman, Michael D. Max
2000, Conference Paper, Coastal Systems and Continental Margins, Natural gas hydrate in oceanic permafrost environments
No abstract available. ...
Compilation principles and the main units of the legend of the geodynamic map of North and Central Asia, Russian Southern Far East, Korea and Japan
Leonid M. Parfenov, Warren J. Nokleberg, Alexander I. Khanchuk
2000, Geology of the Pacific Ocean (15) 463-482
A map at 1:5,000,000, covering the territories of Eastern and Southern Siberia, Mongolia, Northeast China and the southern part of the Russian Far East, Korea and Japan, is being compiled within the scope of the International Scientific Project on Tectonics, Geodynamics and Metallogeny. The principles and content of terrane analysis...
New eyes in the sky measure glaciers and ice sheets
Hugh Kieffer, Jeffrey S. Kargel, Roger G. Barry, Robert Bindschadler, Michael P. Bishop, David MacKinnon, Atsumu Ohmura, Bruce Raup, Massimo Antoninetti, Jonathan Bamber, Mattias Braun, Ian Brown, Denis Cohen, Luke Copland, Jon DueHagen, Rune V. Engeset, Blair Fitzharris, Koji Fujita, Wilfried Haeberli, Jon Oue Hagen, Dorothy Hall, Martin Hoelzle, Maria Johansson, Andi Kaab, Max Koenig, Vladimir Konovalov, Max Maisch, Frank Paul, Frank Rau, Niels Reeh, Eric Rignot, Andres Rivera, Martiyn De Ruyter de Wildt, Ted Scambos, Jesko Schaper, Greg Scharfen, Jack Shroder, Olga Solomina, David Thompson, Kees van der Veen, Trudy Wohlleben, Neal Young
2000, Eos, Transactions, American Geophysical Union (81) 265-271
The mapping and measurement of glaciers and their changes are useful in predicting sea-level and regional water supply, studying hazards and climate change [Haeberli et al., 1998],and in the hydropower industry Existing inventories cover only about 67,000 of the world's estimated 160,000 glaciers and are based on data collected over...
The potential for calcium depletion in forest ecosystems of southeastern United States: Review and analysis
Thomas G. Huntington
2000, Global Biogeochemical Cycles (14) 623-638
Biogeochemical mass balance assessments of calcium status in southeastern forests indicate that losses through harvesting and soil leaching often exceed inputs from atmospheric deposition and weathering. Many forest soils of the southeastern United States are particularly sensitive because these soils and the underlying saprolite from which these soils are derived...
Industrial minerals 1999
Aldo F. Barsotti, David E. Morse
2000, Mining Engineering (52) 21-27
A special section on the state of industrial minerals in 1999, including statistics on imports, exports, and production, is presented....
Use of Argon, Corona, and Landsat imagery to assess 30 years of land resource changes in west-central Senegal
G. Gray Tappan, Amadou Hadj, Eric C. Wood, Ronald W. Lietzow
2000, Photogrammetric Engineering and Remote Sensing (66) 727-735
Over the past 35 years, an agricultural area of west-central Senegal has experienced rapid population growth, fast expansion of agricultural lands, a decline in rainfall, and degradation of vegetative and soil resources. Although such changes have not escaped the attention of Senegal's people, its government, and the scientific community the...
Giant porphyry-related metal camps of the world— A database
Felix E. Mutschler, Steve Ludington, Arthur A. Bookstrom
2000, Open-File Report 99-556
No abstract available....
Hydrogeology and the distribution of salinity in the Floridan aquifer system, Palm Beach County, Florida
R.S. Reese, S.J. Memberg
2000, Water-Resources Investigations Report 99-4061
The virtually untapped Floridan aquifer system is considered to be a supplemental source of water for public use in the highly populated coastal area of Palm Beach County. A recent study was conducted to delineate the distribution of salinity in relation to the local hydrogeology and assess the potential processes...
Hydrologic and water-quality data for ground water along the Milk River Valley, north-central to northeastern Montana
Sean M. Lawlor
2000, Open-File Report 2000-79
Digital orthophoto quadrangles
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 039-00
A digital orthophoto quadrangle (DOQ) is a computer-generated image of an aerial photograph in which image displacement caused by terrain relief and camera tilts has been removed. It combines the image characteristics of a photograph with the geometric qualities of a map....
Landslides in Alameda County, California: A digital database extracted from preliminary photointerpretation maps of surficial deposits by T.H. Nilsen in USGS Open-File Report 75-277
Sebastian Roberts, Michelle A. Roberts, Eileen M. Brennan
2000, Open-File Report 99-504
All or part of 25 7.5-minute quadrangles identifying 8465 landslides - largely slow-moving slides and earth flows - in Alameda County, California, have been converted to a digital-map database, compiled at 1:24,000 scale and plotted at 1:62,500 scale, that can be acquired from the U.S. Geological Survey over the Internet...
Map scales
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 038-00
To be most useful, a map must show locations and distances accurately on a sheet of paper of convenient size. This means that all things included in the map-ground area, rivers, lakes, roads, distances between features, and so on must be shown proportionately smaller than they really are. The proportion chosen for a particular map is its scale....
Is seawater intrusion affecting ground water on Lopez Island, Washington?
James R. Lyles, editor(s)
2000, Fact Sheet 057-00
Revision of Primary Series Maps
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 047-00
In 1992, the U.S. Geological Survey (USGS) completed a 50-year effort to provide primary series map coverage of the United States. Many of these maps now need to be updated to reflect the construction of new roads and highways and other changes that have taken place over time. The USGS...
In-situ growth of calcite at Devils Hole, Nevada--Comparison of field and laboratory rates to a 500,000 year record of near-equilibrium calcite growth
Niel Plummer, Eurybiades Busenberg, Alan C. Riggs
2000, Aquatic Geochemistry (6) 257-274
Calcite grew continuously for 500,000 years on the submerged walls of an open fault plane (Devils Hole) in southern Nevada, U.S.A. at rates of 0.3 to 1.3 mm/ka, but ceased growing approximately 60,000 years ago, even though the fault plane remained open and was continuously submerged. The maximum initial in-situ...
US GeoData Digital Elevation Models
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 040-00
Digital elevation model (DEM) data are arrays of regularly spaced elevation values referenced horizontally either to a Universal Transverse Mercator (UTM) projection or to a geographic coordinate system. The grid cells are spaced at regular intervals along south to north profiles that are ordered from west to east. The U.S....
U.S. Geological Survey World Wide Web Information
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 037-00
The U.S. Geological Survey (USGS) invites you to explore an earth science virtual library of digital information, publications, and data. The USGS World Wide Web sites offer an array of information that reflects scientific research and monitoring programs conducted in the areas of natural hazards, environmental resources, and cartog-raphy. This...
The potential for denitrification of ground water by coastal plain sediments in the Patuxent River Basin, Maryland
L. Joseph Bachman, David E. Krantz
2000, Fact Sheet 053-00
No abstract available....
Delta subsidence in California: The sinking heart of the state
S. E. Ingebritsen, M. E. Ikehara, D. L. Galloway, D.R. Jones
2000, Fact Sheet 005-00
The Sacramento-San Joaquin River Delta of California once was a great tidal freshwater marsh blanketed by peat and peaty alluvium. Beginning in the late 1800s, levees were built along the stream channels, and the land thus protected from flooding was drained, cleared, and planted. Although the Delta is now an...
Isostatic gravity map of the Battle Mountain 30 x 60 minute quadrangle, north central Nevada
D. A. Ponce, R. L. Morin
2000, IMAP 2687
Gravity investigations of the Battle Mountain 30 x 60 minute quadrangle were begun as part of an interagency effort by the U.S. Geological Survey (USGS) and the Bureau of Land Management to help characterize the geology, mineral resources, hydrology, and ecology of the Humboldt River Basin in north-central Nevada. The...
Ordering procedures for photographic enlargement products--NAPP, NHAP, and custom
Water Resources Division, U.S. Geological Survey
2000, Fact Sheet 041-00
Established in 1987, the National Aerial Photography Program (NAPP) collects aerial photographs of the 48 conterminous States on a 5-year cycle. Copies of NAPP images are available in black-and-white and (or) color- Figure 1. NAPP paper-print sizes and their corresponding scales for standard enlargements.* infrared film at 1 :40,000 scale. Figure 1 shows NAPP paper-print sizes and their corresponding...
Comparison of phase velocities from array measurements of Rayleigh waves associated with microtremor and results calculated from borehole shear-wave velocity profiles
Hsi-Ping Liu, David M. Boore, William B. Joyner, David H. Oppenheimer, Richard E. Warrick, Wenbo Zhang, John C. Hamilton, Leo T. Brown
2000, Bulletin of the Seismological Society of America (90) 666-678
Shear-wave velocities (VS) are widely used for earthquake ground-motion site characterization. VS data are now largely obtained using borehole methods. Drilling holes, however, is expensive. Nonintrusive surface methods are inexpensive for obtaining VS information, but not many comparisons with direct borehole measurements have been published. Because different assumptions are used...
Stratigraphic framework of Lower and Upper Cretaceous rocks in central and eastern Montana
Steven M. Condon
2000, Data Series 57
This study shows the lithology, thickness, distribution, and correlation of Lower and Upper Cretaceous rocks in central and eastern Montana. The described stratigraphic units range from the Aptian Kootenai Formation (oldest) to the Maastrichtian Hell Creek Formation (youngest). An included text report describes the units, and most formations or members...
Evaluation of geophysical logs and slug tests, phase II, at AIW Frank/Mid-County Mustang Superfund Site, Chester County, Pennsylvania
R.W. Conger, D.J. Goode, R. A. Sloto
2000, Open-File Report 99-452
Between September 1997 and October 1998, nine monitor wells were drilled at the AIW Frank/Mid-County Mustang Superfund Site in Chester County, Pa., to determine the horizontal and vertical distribution of contaminated ground water migrating from known contaminant sources. The U.S. Geological Survey conducted borehole geophysical logging and borehole television surveys...
