Publications
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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
Landslides in colluvium Landslides in colluvium
No abstract available.
Authors
Robert W. Fleming, Arvid M. Johnson
Decade-scale trend in sea water salinity revealed through d18O analysis of Montastraea annularis annual growth bands Decade-scale trend in sea water salinity revealed through d18O analysis of Montastraea annularis annual growth bands
Stable oxygen isotope ratios (1)180) of coral skeletons are influenced by ambient water temperature and by the oxygen isotope ratio in the surrounding sea water, which, in turn, is linked to evaporation (salinity) and precipitation. To investigate this relationship more thoroughly, we collected hourly temperature data from the Hen and Chickens Reef in the Florida Keys between 1975 and...
Authors
Robert B. Halley, Peter K. Swart, Richard E. Dodge, J. Harold Hudson
Quaternary tectonics of Utah with emphasis on earthquake-hazard characterization Quaternary tectonics of Utah with emphasis on earthquake-hazard characterization
This report consolidates and synthesizes information on Quaternary faulting, folding, and volcanism in Utah and characterizes recent tectonic activity throughout the state. The primary purpose is to provide a comprehensive reference on faultspecific seismic sources and surface rupture to facilitate the evaluation of earthquake hazards in Utah. Two 1:500,000-scale maps show Quaternary...
Authors
Suzanne Hecker
Priorities for landslide mapping during the International Decade of Hazard Reduction Priorities for landslide mapping during the International Decade of Hazard Reduction
No abstract available.
Authors
E. E. Brabb
By
Geology, Energy, and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Landslide Hazards Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Investigating Climate Change of Western North America Investigating Climate Change of Western North America
No abstract available.
Authors
James V. Geological Survey Gardner
Proposal for worldwide landslide hazard maps Proposal for worldwide landslide hazard maps
No abstract available.
Authors
E. E. Brabb
By
Geology, Energy, and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Landslide Hazards Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Geology and human activity in the Florida Keys Geology and human activity in the Florida Keys
No abstract available.
Authors
Eugene A. Shinn
Lake Baikal - A touchstone for global change and rift studies Lake Baikal - A touchstone for global change and rift studies
No abstract available.
Authors
Deborah R. Hutchinson, Steve M. Colman
Seismic evidence for active magmatic underplating beneath the Basin and Range Province, western United States Seismic evidence for active magmatic underplating beneath the Basin and Range Province, western United States
Near-vertical and wide-angle seismic reflection data provide evidence for the presence of a magma body at the base of the crust beneath Buena Vista Valley in northwestern Nevada. The seismic response of this hypothesized magma body is characterized by high-amplitude, near-vertical P wave reflections and a comparably strong P-to-S converted phase. The magma body, referred to here as the...
Authors
Craig M. Jarchow, George A. Thompson, Rufus D. Catchings, Walter D. Mooney
Deformation from 1973 to 1987 in the epicentral area of the 1959 Hebgen Lake, Montana, earthquake (Ms = 7.5) Deformation from 1973 to 1987 in the epicentral area of the 1959 Hebgen Lake, Montana, earthquake (Ms = 7.5)
A 40‐km aperture trilateration network centered on the 1959 Hebgen Lake earthquake epicenter has been surveyed in 1973, 1974, 1976, 1978, 1981, 1984, and 1987. The deformation inferred from those surveys is described roughly by a uniaxial, 0.266 ± 0.014 μstrain/yr, N15°E ± 1°extension that is uniform in both time and space. That extension is orthogonal to the strike (N78°W ± 5°) of the...
Authors
James C. Savage, Michael Lisowski, W.H. Prescott, A.D. Pitt
Deformation from 1973 through 1991 in the epicentral area of the 1992 Landers, California, Earthquake (Ms = 7.5) Deformation from 1973 through 1991 in the epicentral area of the 1992 Landers, California, Earthquake (Ms = 7.5)
Deformation of a 50 × 60 km trilateration network that spans the epicenter of the 1992 Landers earthquake(Ms = 7.5) was measured by seven surveys over the 19 years preceding the earthquake. Three moderate earthquakes (1979 Homestead Valley, Ms = 5.6; 1986 North Palm Springs, Ms = 6.0; and 1992 Joshua Tree, Ms = 6.1) occurred within the network during those 19 years. Here we use geodetic...
Authors
James C. Savage, Michael Lisowski, M. Murray