Conference Papers
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Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
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Postrelease monitoring of radio-instrumented sea otters in Prince William Sound
Sea otters (Enhydra lutris) that were captured in western Prince William Sound (PWS) or the Gulf of Alaska, treated, and held in captivity at the temporary rehabilitation centers established in response to the T/V Exxon Valdez oil spill were instrumented with radio transmitters, released into eastern PWS, and monitored by radiotelemetry. We undertook the present study to gain information for guidi
Authors
C. Monnett, L.M. Rotterman, C. Stack, Daniel H. Monson
Precious metals of Wyoming
Within the State boundaries are numerous gold deposits and anomalies scattered throughout the geological record. Many examples occur in rocks ranging in age from Archean to Tertiary, and in Quaternary to Recent unconsolidated gravels and sands. Yet relatively few of these deposits and anomalies have been explored and only a handful have been drilled. Since much of Wyoming is underlain by an Archea
Authors
W. Dan Hausel
Procedures and rationale for marking sea otters captured and treated during the T/V Exxon Valdez oil spill
Four methods were used for marking sea otters (Enhydra lutris) captured and treated during the response to the T/V Exxon Valdez oil spill. Colored and numbered flipper tags were placed on each sea otter that was brought to the otter treatment centers. These tags allowed individual recognition and permitted the tracking of individuals through the treatment and holding processes. Recovery of tagged
Authors
A.R. DeGange, T.D. Williams
Quaternary geology and geologic hazards of the West Desert Hazardous Industry Area, Tooele County, Utah
The study of Quaternary geology provides information to evaluate geologic conditions and identify geologic constraints on construction in the West Desert Hazardous Industry Area (WDHIA). The WDHIA includes portions of the Great Salt Lake Desert to the west, underlain by several thousand feet of sediments capped by saline mudflats, and Ripple Valley to the east, separated from the Desert by the Gra
Authors
Barry J. Solomon, Bill D. Black
Reconnaissance δ13C and δ18O data from Trench 14, Busted Butte, and drill hole G-4, Yucca Mountain, Nevada test site
Trench 14 was excavated to investigate the extent of Quaternary movement on the Bow Ridge fault, a north-south structure on the east side of Yucca Mountain. The trench exposes calcite and opaline silica as fault breccia cements, veinlike fault fillings, and slope-parallel calcretes. Although the latter are clearly similar to calcretes of pedogenic origin, the cementing and fault-filling mineraliza
Authors
Joseph F. Whelan, John S. Stuckless
Regional flood-frequency relations for streams with many years of no flow
In the southwestern United States, flood-frequency relations for streams that drain small arid basins are difficult to estimate, largely because of the extreme temporal and spatial variability of floods and the many years of no flow. A method is proposed that is based on the station-year method. The new method produces regional flood-frequency relations using all available annual peak-discharge da
Authors
Hjalmar W. Hjalmarson, Blakemore E. Thomas
Relative efficiency of four parameter-estimation methods in steady-state and transient ground-water flow models
Parameters in numerical ground-water flow models have been successfully estimated using nonlinear-optimization methods such as the modified Gauss-Newton (GN) method and conjugate-direction methods. This paper investigates the relative efficiency of GN and three conjugate-direction parameter-estimation methods on two-dimensional, steady-state and transient ground-water flow test cases. The steady-s
Authors
M. C. Hill
Rheological analysis of fine-grained natural debris-flow material
Experiments were conducted on large samples of fine-grained material (???2mm) from a natural debris flow using a wide-gap concentric-cylinder viscometer. The rheological behavior of this material is compatible with a Bingham model at shear rates in excess of 5 sec. At lesser shear rates, rheological behavior of the material deviates from the Bingham model, and when sand concentration of the slurry
Authors
Jon J. Major, Thomas C. Pierson
Rheological properties of simulated debris flows in the laboratory environment
Steady debris flows with or without a snout are simulated in a 'conveyor-belt' flume using dry glass spheres of a uniform size, 5 or 14 mm in diameter, and their rheological properties described quantitatively in constants in a generalized viscoplastic fluid (GVF) model. Close agreement of the measured velocity profiles with the theoretical ones obtained from the GVF model strongly supports the va
Authors
Chi-Hai Ling, Cheng-lung Chen, Chyan-Deng Jan
Simulated effects of climatic change on runoff and drought in the Delaware River Basin
Various projection of climatic change were applied to watershed models of the Delaware River basin. Simulations indicate that a warming could reduce annual runoff by as much as 25 percent if current precipitation patterns continue. Simulations indicate that the largest changes in basin drought are in response to relatively small changes in precipitation. Basin drought was less sensitive to increas
Authors
Mark A. Ayers, Gary D. Tasker, David M. Wolock, Gregory J. McCabe, Lauren E. Hay
Site 778
No abstract available
Authors
P.B. Fryer, J.A. Pearce, L.B. Stokking, J.R. Ali, R.J. Arculus, D.L. Ballotti, M.M. Burke, Giuliano Ciampo, J.A. Haggerty, R.B. Haston, Dietrich Heling, M.A. Hobart, Teruaki Ishii, L.E. Johnson, Yves Lagabrielle, F.W. McCoy, Hirokazu Maekawa, M. S. Marlow, G.J. Milner, M.J. Mottl, B.J. Murton, S.P. Phipps, C.A. Rigsby, K.L. Saboda, Bjorg Stabell, S.R. Van der Laan, Yulin Xu
Site 780
No abstract available
Authors
P.B. Fryer, J.A. Pearce, L.B. Stokking, J.R. Ali, R.J. Arculus, D.L. Ballotti, M.M. Burke, Giuliano Ciampo, J.A. Haggerty, R.B. Haston, Dietrich Heling, M.A. Hobart, Teruaki Ishii, L.E. Johnson, Yves Lagabrielle, F.W. McCoy, Hirokazu Maekawa, M. S. Marlow, G.J. Milner, M.J. Mottl, B.J. Murton, S.P. Phipps, C.A. Rigsby, K.L. Saboda, Bjorg Stabell, S.R. Van der Laan, Yulin Xu