Publications
Filter Total Items: 7516
Channelized subglacial drainage over a deformable bed Channelized subglacial drainage over a deformable bed
We develop theoretically a description of a possible subglacial drainage mechanism for glaciers and ice sheets moving over saturated, deformable till. The model is based on the plausible assumption that flow of water in a thin film at the ice-till interface is unstable to the formation of a channelized drainage system, and is restricted to the case in which meltwater cannot escape...
Authors
J. S. Walder, A. Fowler
Rapid water-level fluctuations in a thin colluvium landslide west of Cincinnati, Ohio Rapid water-level fluctuations in a thin colluvium landslide west of Cincinnati, Ohio
No abstract available.
Authors
William C. Haneberg, A. Onder Gokce
Stratigraphy of the Mississippi-Alabama shelf and the Mobile River incised-valley system Stratigraphy of the Mississippi-Alabama shelf and the Mobile River incised-valley system
The Mobile River incised-valley system located in the northern Gulf of Mexico occupies an area from southern Alabama through Mobile Bay to the outer Mississippi-Alabama continental shelf. During the Wisconsinan regression, this incised-valley system was fluvially eroded and extended across the exposed shelf to a shelf-margin delta complex. The last postglacial transgression drowned the...
Authors
Jack L. Kindinger, Peter S. Balson, James G. Flocks
Acoustic mapping as an environmental management tool: I. detection of barrels of low-level radioactive waste, Gulf of the Farallones National Marine Sanctuary, California Acoustic mapping as an environmental management tool: I. detection of barrels of low-level radioactive waste, Gulf of the Farallones National Marine Sanctuary, California
The oceans have been and will continue to be disposal sites for a wide variety of waste products. Often these wastes are not dumped at the designated sites or transport occurs during or after dumping, and, subsequent attempts to monitor the effects the waste products have on the environment are inadequate because the actual location of the waste is not known. Acoustic mapping of the...
Authors
Herman A. Karl, William C. Schwab, A. St. C. Wright, David E. Drake, John L. Chin, William W. Danforth, Edward Ueber
New recording package for VACM provides sensor flexibility New recording package for VACM provides sensor flexibility
For the past three decades, the VACM has been a standard for ocean current measurements. A VACM is a true vector-averaging instrument that computes north and east current vectors and averages temperature continuously over a specified interval. It keeps a running total of rotor counts, and records one-shot samples of compass, vane position and time. Adding peripheral sensors to the data...
Authors
William J. Strahle, S. E. Worrilow, S. E. Fucile, Marinna A. Martini
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