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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 more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6158
Use of field-scale experiments and reactive transport modeling to evaluate remediation alternatives in streams affected by acid mine drainage Use of field-scale experiments and reactive transport modeling to evaluate remediation alternatives in streams affected by acid mine drainage
No abstract available.
Authors
B. A. Kimball, R.L. Runkel, Katherine Walton-Day
Simulated effects of hydroelectric project regulation on mortality of American eels Simulated effects of hydroelectric project regulation on mortality of American eels
No abstract available.
Authors
Alexander Haro, Theodore R. Castro-Santos, Kevin Whalen, Gail S. Wippelhauser, Lia McLaughlin
Pleistocene tephrostratigraphy and paleogeography of southern Puget Sound near Olympia, Washington Pleistocene tephrostratigraphy and paleogeography of southern Puget Sound near Olympia, Washington
Our detailed mapping in the south Puget Sound basin has identified two tephras that are tentatively correlated to tephras from Mount St. Helens and Mount Rainier dated ca. 100-200 ka and 200 ka, respectively. This, plus the observation that fluvial and lacustrine sediments immediately underlying the Vashon Drift of latest Wisconsin age are nearly everywhere radiocarbon infinite, suggests...
Authors
Timothy J. Walsh, Michael Polenz, Robert L. Logan, Marvin A. Lanphere, Thomas W. Sisson
Arsenic in southeastern Michigan Arsenic in southeastern Michigan
Arsenic levels exceeding 10 μg/L are present in hundreds of private supply wells distributed over ten counties in eastern and southeastern Michigan. Most of these wells are completed in the Mississippian Marshall Sandstone, the principal bedrock aquifer in the region, or in Pleistocene glacial or Pennsylvanian bedrock aquifers. About 70% of ground water samples taken from more than 100...
Authors
Allan Kolker, Sheridan K. Haack, William F. Cannon, D.B. Westjohn, M.-J. Kim, Laurel G. Woodruff
When models meet managers: Examples from geomorphology When models meet managers: Examples from geomorphology
No abstract available.
Authors
Peter R. Wilcock, John C. Schmidt, M. Gordon Wolman, William E. Dietrich, DeWitt Dominick, Martin W. Doyle, Gordon E. Grant, Richard M. Iverson, David R. Montgomery, Thomas C. Pierson, Steven P. Schilling, Raymond C. Wilson
Prediction in geomorphology Prediction in geomorphology
No abstract available.
Authors
Peter R. Wilcock, Richard M. Iverson
Projecting the success of plant restoration with population viability analysis Projecting the success of plant restoration with population viability analysis
Conserving viable populations of plant species requires that they have high probabilities of long-term persistence within natural habitats, such as a chance of extinction in 100 years of less than 5% (Menges 1991, 1998; Brown 1994; Pavlik 1994; Chap. 1, this Vol.). For endangered and threatened species that have been severely reduces in range and whose habitats have been fragmented...
Authors
T.J. Bell, M.L. Bowles, A. K. McEachern
Gravity-driven mass flows Gravity-driven mass flows
Gravity-driven mass flows, also known as sediment gravity flows, include a spectrum of phenomena in which more-or-less coherent mixtures of grains and intergranular fluid flow down slopes. At one end of this spectrum are dilute flows in which momentum is transferred mostly by fluid forces and sediment is largely a passive cargo that increases the effective fluid density. These dilute...
Authors
Richard M. Iverson
Effects of microbiological and geochemical interactions in mine drainage Effects of microbiological and geochemical interactions in mine drainage
No abstract available.
Authors
D. Kirk Nordstrom
How should mathematical models of geomorphic processes be judged? How should mathematical models of geomorphic processes be judged?
No abstract available.
Authors
Richard M. Iverson
Deep fluids in the continents: I. Sedimentary basins Deep fluids in the continents: I. Sedimentary basins
No abstract available.
Authors
Yousif K. Kharaka, J.S. Hanor
In situ arsenic remediation in a fractured, alkaline aquifer In situ arsenic remediation in a fractured, alkaline aquifer
No abstract available.
Authors
A. H. Welch, Kenneth G. Stollenwerk, D. K. Maurer, Lawrence S. Feinson