Conference Papers
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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5547
Bed material and numerical modeling in a grand bed stream Bed material and numerical modeling in a grand bed stream
No abstract available.
Authors
R.T. Milhous
The geochemistry of hot spring waters at Norris Geyser Basin, Yellowstone National Park The geochemistry of hot spring waters at Norris Geyser Basin, Yellowstone National Park
No abstract available.
Authors
Robert O. Fournier, J. Michael Thompson, Roderick A. Hutchinson
Tertiary structural evolution of the southern Rhodope metamorphic province: a fundamental revision Tertiary structural evolution of the southern Rhodope metamorphic province: a fundamental revision
The Rhodope province is conventionally interpreted as a continental fragment that was caught between Apulia and Europe and deformed and metamorphosed in the hinterland of the Hellenic collisional orogen. Geologic mapping in the Strymon Valley region of northeastern Greece augmented by new U-Pb and 40Ar/ 39Ar geochronologic data support an alternative view that the southwestern Rhodope...
Authors
D. Dinter
Nutria grazing impacts on vegetation in coastal wetlands Nutria grazing impacts on vegetation in coastal wetlands
No abstract available.
Authors
Lori A. Johnson, A. Lee Foote
New developments in estimating site response effects on ground motion New developments in estimating site response effects on ground motion
No abstract available.
Authors
Roger D. Borcherdt
Hurricanes and anchors: preliminary results from the National Park Service regional reef assessment program Hurricanes and anchors: preliminary results from the National Park Service regional reef assessment program
The U .S . National Park Service NPS began a Regional Assessment Program for coral reefs in the U.S. Virgin Islands and Florida in 1988. Scientists from NPS and six other institutions have now established longterm monitoring sites at Virgin Islands National Park St. John, USVI, Buck Island Reef National Monument St. Croix, USVI, Biscayne National Park Florida and Fort Jefferson National...
Authors
Caroline S. Rogers
A comparison of the performance of acclimated and direct stream released, hatchery-reared steelhead smolts in northeast Oregon A comparison of the performance of acclimated and direct stream released, hatchery-reared steelhead smolts in northeast Oregon
No abstract available
Authors
T.A. Whitesel, P.T. Lofty, R.W. Carmichael, R.T. Messmer, M.W. Flesher, D.W. Rondorf
A seabird monitoring program for the North Pacific A seabird monitoring program for the North Pacific
Seabird monitoring is the accumulation of time series data on any aspect of seabird distribution, abundance, demography, or behavior. Typical studies include annual or less frequent measures of numbers or productivity; less commonly, the focus is on marine habitat use, phenology, food habits, or survival. The key requirement is that observations are replicated over time and made with...
Authors
S.A. Hatcher, G.W. Kaiser, Alexander V. Kondratyev, G.V. Byrd
A survey of molecular marker compounds in sediments of San Francisco Bay, California A survey of molecular marker compounds in sediments of San Francisco Bay, California
An areal survey of surficial sediments in San Francisco Bay has been conducted to evaluate the presence of extractable organic compounds. Molecular marker compounds studied include hydrocarbons (PAH's), chlorinated pesticides, and other organic compounds that provide information on sources of organic input into the Bay. Fairly uniform source profiles are seen throughout the Bay...
Authors
Frances D. Hostettler, John B. Rapp, Wilfred E. Geological Survey Pereira, Keith A. Kvenvolden
Aluminum response in acid mitigation Aluminum response in acid mitigation
No abstract available.
Authors
K.H. Bennett, D.M. Downey
Antifouling leaching technique for optical lenses Antifouling leaching technique for optical lenses
The effectiveness of optical lenses deployed in water less than 100 m deep is significantly reduced by biofouling caused by the settlement of macrofauna, such as barnacles, hydroids, and tunicates. However, machineable porous plastic rings can be used to dispense antifoulant into the water in front of the lens to retard macrofaunal growth without obstructing the light path. Unlike...
Authors
William J. Strahle, C. L. Perez, Marinna A. Martini
Application of studies on the overboard placement of dredged sediments to the management of disposal sites Application of studies on the overboard placement of dredged sediments to the management of disposal sites
From the mid 1960's until 1991, dredging and disposal occurred in the northern Chesapeake Bay without guidelines to maximize the capacity and to minimize the spread of the deposits beyond the disposal sites, particularly toward the navigation channel. Planning for future dredging projects is dependant upon the remaining site capacity and the behavior of the disposed sediment. Recent...
Authors
William Panageotou, Jeffrey Halka