Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16731
Coastal evolution and sediment budget at the mouth of the Columbia River, USA Coastal evolution and sediment budget at the mouth of the Columbia River, USA
The coastal morphology of the Mouth of the Columbia River (MCR) has changed dramatically over the past century. Since the construction of jetties in 1914 and 1917, the inlet deepened and stabilized, the outer ebb delta migrated northward and offshore several kilometers, and the adjacent shorelines to the north and south prograded several hundreds of meters. Recently, high rates of...
Authors
Guy Gelfenbaum, Maarten C. Buijsman, Christopher R. Sherwood, Hans R. Moritz, Ann E. Gibbs
Sediment transport on a high-energy ebb-tidal delta Sediment transport on a high-energy ebb-tidal delta
Six tripods were deployed at shallow (~14-m) and deep (~24-m) sites on the northern, middle, and southern flanks of the Grays Harbor, Washington, U.S.A. ebb-tidal delta from early October through December, 1999 to measure waves, currents, temperature, and suspended-sediment concentrations as part of a wave-refraction and sediment-transport experiment. Directional wave spectra show that...
Authors
Christopher R. Sherwood, Guy Gelfenbaum, Peter A. Howd, Margaret L. Palmsten
Lithochronologic units and mineral deposits of the Appalachian Orogen from Maine to Alabama Lithochronologic units and mineral deposits of the Appalachian Orogen from Maine to Alabama
No abstract available.
Authors
J. D. Peper, J. E. Gair, M. P. Foose, T. H. Kress, Connie Dicken
Precambrian basement map of the north Mid-Continent, U.S.A.; a digital representation of the 1990 P.K. Sims map Precambrian basement map of the north Mid-Continent, U.S.A.; a digital representation of the 1990 P.K. Sims map
No abstract available.
Authors
Connie L. Dicken, Shana G. Pimley, William F. Cannon
Photographs of the sea floor in western Massachusetts Bay, offshore of Boston, Massachusetts, July, 1999 Photographs of the sea floor in western Massachusetts Bay, offshore of Boston, Massachusetts, July, 1999
This CD-ROM contains photographs and sediment sample analyses of the sea floor obtained at 142 sites in western Massachusetts Bay (Figure 1) during a research cruise (USGS cruise ISBL99024) aboard the Fishing Vessel (FV) Isabel S. (Figure 2) conducted July 18-21, 1999. These photographs and samples provide critical ground truth information for the interpretation of shaded relief and...
Authors
Benjamin T. Gutierrez, Bradford Butman, Dann S. Blackwood
Use of borehole and surface geophysics to investigate ground-water quality near a road-deicing salt-storage facility, Valparaiso, Indiana Use of borehole and surface geophysics to investigate ground-water quality near a road-deicing salt-storage facility, Valparaiso, Indiana
Borehole and surface geophysics were used to investigate ground-water quality affected by a road-deicing salt-storage facility located near a public water-supply well field. From 1994 through 1998, borehole geophysical logs were made in an existing network of monitoring wells completed near the bottom of a thick sand aquifer. Logs of natural gamma activity indicated a uniform and...
Authors
M.R. Risch, B.A. Robinson
Testing and application of diffusion samplers to identify temporal trends in volatile-organic compounds Testing and application of diffusion samplers to identify temporal trends in volatile-organic compounds
No abstract available.
Authors
Philip T. Harte, M.J. Brayton, Wayne Ives, Sharon Perkins, Carroll Brown, Richard E. Willey
Intermittent feeding in a migratory omnivore: Digestion and body composition of American Black Duck during autumn Intermittent feeding in a migratory omnivore: Digestion and body composition of American Black Duck during autumn
Birds fast intermittently during weather disturbances and migration. We tested responses of black duck to lost feeding days during autumn mass gain. Nine adult males were fed a pelleted diet (1.5% fat, 15.8% protein, and 18.3% neutral detergent fiber) and caged indoors during September and October (12 h light; 17°–24°C) to measure balances over 14 d when fed ad lib. each day and fasted
Authors
Perry S. Barboza, Dennis G. Jorde
Knickzone propagation in the Black Hills and northern High Plains: A different perspective on the late Cenozoic exhumation of the Laramide Rocky Mountains Knickzone propagation in the Black Hills and northern High Plains: A different perspective on the late Cenozoic exhumation of the Laramide Rocky Mountains
Geomorphic research in the Black Hills and northern High Plains poses an intriguing hypothesis for the Cenozoic evolution of this salient of the Laramide Rockies. Most recently, geologists have appealed to late Cenozoic epeirogenic uplift or climate change to explain the post-Laramide unroofing of the Rockies. On the basis of field mapping and the interpretation of long-valley profiles...
Authors
Brent J. Zaprowski, Edward B. Evenson, Frank J. Pazzaglia, Jack B. Epstein