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184904 results.

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Page 3337, results 83401 - 83425

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Medusahead
H.C. Miller, D. Clausnitzer, Michael M. Borman
1999, Book chapter, Biology and management of noxious rangeland weeds
No abstract available....
The Columbia River littoral cell: A sediment budget overview
G. Gelfenbaum, C. R. Sherwood, C. D. Peterson, G. M. Kaminsky, Maarten C. Buijsman, D.C. Twichell, P. Ruggiero, A. E. Gibbs, C. Reed
Nicholas C. Kraus, William G. McDougal, editor(s)
1999, Conference Paper, Coastal Sediments '99: Proceedings of the 4th International Symposium on Coastal Engineering and Science of Coastal Sediment processes
No abstract available....
Biological effects of the 1997/98 ENSO in Cook Inlet, Alaska
John F. Piatt, Gary S. Drew, Thomas I. van Pelt, Alisa A. Abookire, April Nielsen, Michael T. Shultz, Alexander S. Kitaysky
1999, Conference Paper, Proceedings of the 1998 Symposium on the Impacts of the 1997/98 El Niño Event on the North Pacific Ocean and Its Marginal Seas
We have been conducting detailed studies of the biology of seabirds in relation to oceanography and forage fish ecology in lower Cook Inlet, Alaska, since 1995. This fortuitously allowed us to document biological effects of the 1997/98 ENSO in this region. Anomalously warm sea surface temperatures (SSTs) were observed in...
Tracing sediment dispersal on nourished beaches: Two case studies
E. Robert Thieler, Paul T. Gayes, William C. Schwab, M. Scott Harris
1999, Conference Paper, Coastal Sediments '99
The event- to decade-scale patterns of sediment dispersal on two artificially nourished beaches have been mapped using a combination of geophysical surveys, closely-spaced vibracores, and repeated beach profiles. At both Wrightsville Beach, NC and Folly Island, SC the sediment used for beach nourishment is macroscopically distinct from native sediment and...
Seismic expression of the Chesapeake Bay impact crater: Structural and morphologic refinements based on new seismic data
C. Wylie Poag, Deborah R. Hutchinson, Steve M. Colman, Myung W. Lee
B. O. Dressler, Virgil L. Sharpton, editor(s)
1999, GSA Special Papers 339
This work refines previous interpretations of the structure and morphology of the Chesapeake Bay impact crater on the basis of more than 1,200 km of multichannel and single-channel seismic reflection profiles collected in the bay and on the adjacent continental shelf. The outer rim, formed in sedimentary rocks, is irregularly...
Metal mining and the environment
Travis L. Hudson, Frederick D. Fox, Geoffrey S. Plumlee
1999, Book
The booklet, Metal Mining and the Environment, and the colorful companion poster offer new tools for raising awareness and understanding of the impact and issues surrounding metal mining and the environment. The 64-page full-color booklet contains a copy of the poster which includes a student activity on the back. This...
Progress of environmental studies in coal mining areas of western Pennsylvania and central West Virginia
James H. Eychaner
1999, Conference Paper, Proceedings Twentieth Annual West Virginia Surface Mine Drainage Task Force Symposium
Two studies related to the regional environmental effects of coal mining in the Appalachian Plateau were conducted in 1998 as part of the National Water‐Quality Assessment program of the U.S. Geological Survey. The study area of about 20,000 square miles included parts of the Allegheny and Monongahela River basins in...
Development of a long-term ecological monitoring program in Denali National Park and Preserve, Alaska (USA)
Karen L. Oakley, Edward M. Debevec, Eric A. Rexstad
1999, Conference Paper, Proceedings: North American science symposium: Toward a unified framework for inventorying and monitoring forest ecosystem resources
A Long-term Ecological Monitoring (LTEM) program began at Denali National Park and Preserve, Alaska (USA) in 1992, as a prototype for subarctic parks. The early history of the Denali LTEM program provides insight into the challenges that can arise during monitoring program development. The Denali program has thus far taken...
Modern accumulation rates and a sediment budget for the Eel shelf: a flood-dominated depositional environment
Christopher K. Sommerfield, Charles A. Nittrouer
1999, Marine Geology (154) 227-241
The northern California continental margin is periodically impacted by geologically significant storms, which have a marked influence on terrigenous sediment supply, flood deposition, and long-term accumulation of fine-grained sediment on the Eel shelf. Accumulation of Eel River muds on the adjacent shelf was investigated using 210Pb and 137Cs geochronologies, in...
Boreal partners in flight: Working together to build a regional research and monitoring program
Colleen M. Handel
Rick Bonney, David N. Pashley, Robert J. Cooper, Larry Niles, editor(s)
1999, Conference Paper, Strategies for bird conservation: The Partners in Flight planning process: Proceedings of the 1995 Partners in Flight (PIF) International Workshop
Boreal regions of western North America regularly support breeding populations of 130 species of landbirds, including 68 Nearctic-Neotropical migrants. Primary conservation concerns within the region include increased timber harvesting, insect outbreaks, fire suppression, mining, impacts of military training activities, urbanization, and recreational activities. Under auspices of Partners in Flight, biologists,...