Publications
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Publications of Volcano Hazards Program 2000 Publications of Volcano Hazards Program 2000
The Volcano Hazards Program of the U.S. Geological Survey (USGS) is part of the Geologic Hazards Assessments subactivity as funded by Congressional appropriation. Investigations are carried out in the Geology and Hydrology Disciplines of the USGS and with cooperators at the Alaska Division of Geological and Geophysical Surveys, University of Alaska Fairbanks Geophysical Institute...
Authors
Manuel Nathenson
Seismic hazard in Hawaii: High rate of large earthquakes and probabilistics ground-motion maps Seismic hazard in Hawaii: High rate of large earthquakes and probabilistics ground-motion maps
The seismic hazard and earthquake occurrence rates in Hawaii are locally as high as that near the most hazardous faults elsewhere in the United States. We have generated maps of peak ground acceleration (PGA) and spectral acceleration (SA) (at 0.2, 0.3 and 1.0 sec, 5% critical damping) at 2% and 10% exceedance probabilities in 50 years. The highest hazard is on the south side of Hawaii...
Authors
F. W. Klein, A.D. Frankel, C.S. Mueller, R. L. Wesson, P. G. Okubo
Influence of surface-normal ground acceleration on the initiation of the Jih-Feng-Erh-Shan landslide during the 1999 Chi-Chi, Taiwan, earthquake Influence of surface-normal ground acceleration on the initiation of the Jih-Feng-Erh-Shan landslide during the 1999 Chi-Chi, Taiwan, earthquake
The 1999 Chi-Chi, Taiwan, earthquake triggered numerous landslides throughout a large area in the Central Range, to the east, southeast, and south of the fault rupture. Among them are two large rock avalanches, at Tsaoling and at Jih-Feng-Erh-Shan. At Jih-Feng-Erh-Shan, the entire thickness (30-50 m) of the Miocene Changhukeng Shale over an area of 1 km2 slid down its bedding plane for a...
Authors
C.-C. Huang, Y.-H. Lee, Huaibao P. Liu, D. K. Keefer, R.W. Jibson
Abstracts of the Annual planetary geologic mappers meeting; June 22-24, 2000, Flagstaff, Arizona Abstracts of the Annual planetary geologic mappers meeting; June 22-24, 2000, Flagstaff, Arizona
No abstract available.
Authors
Kenneth L. Tanaka, Derrick D. Hirsch
Landslides induced by Hurricane Mitch in El Salvador -- an inventory and descriptions of selected features Landslides induced by Hurricane Mitch in El Salvador -- an inventory and descriptions of selected features
No abstract available.
Authors
Anthony J. Crone, Rex L. Baum, David J. Lidke, Damon Sather, Lee-Ann Bradley, Arthur C. Tarr
Mountain Meadows Dacite: Oligocene intrusive complex that welds together the Los Angeles Basin, northwestern Peninsular Ranges, and central Transverse Ranges, California Mountain Meadows Dacite: Oligocene intrusive complex that welds together the Los Angeles Basin, northwestern Peninsular Ranges, and central Transverse Ranges, California
Dikes and irregular intrusive bodies of distinctive Oligocene biotite dacite and serially related hornblende latite and felsite occur widely in the central and eastern San Gabriel Mountains, southern California, and are related to the Telegraph Peak granodiorite pluton. Identical dacite is locally present beneath Middle Miocene Topanga Group Glendora Volcanics at the northeastern edge of...
Authors
Thane H. McCulloh, Larry A. Beyer, Ronald W. Morin
A preliminary finite-element analysis of a shallow landslide in the Alki area of Seattle, Washington A preliminary finite-element analysis of a shallow landslide in the Alki area of Seattle, Washington
No abstract available.
Authors
S. Debray, W. Z. Savage
Density and velocity relationships for digital sonic and density logs from coastal Washington and laboratory measurements of Olympic Peninsula mafic rocks and greywackes Density and velocity relationships for digital sonic and density logs from coastal Washington and laboratory measurements of Olympic Peninsula mafic rocks and greywackes
Three-dimensional velocity models for the basins along the coast of Washington and in Puget Lowland provide a means for better understanding the lateral variations in strong ground motions recorded there. We have compiled 16 sonic and 18 density logs from 22 oil test wells to help us determine the geometry and physical properties of the Cenozoic basins along coastal Washington. The depth...
Authors
Thomas M. Brocher, Nikolas I. Christensen
Monterey Bay marine sanctuary geological processes and framework Monterey Bay marine sanctuary geological processes and framework
No abstract available.
Authors
Michael E. Field
Antarctic ice streams and outflow channels on Mars Antarctic ice streams and outflow channels on Mars
New sonar images of the Antarctic sea floor reveal mega-scale glacial lineations that are strikingly similar to longitudinal flutes in martian outflow channels. The analogs suggest that ice moved through the martian channels in places and carved the flutes. The ice in martian channels may have moved like Antarctic ice streams on deformable debris saturated with water under high pore...
Authors
Baerbel K. Lucchitta
U.S. Geological Survey Karst Interest Group: proceedings, St Petersburg, Florida February 13-16, 2001 U.S. Geological Survey Karst Interest Group: proceedings, St Petersburg, Florida February 13-16, 2001
Karst and similar landscapes are found in a wide range of biogeographic classes. In the U.S. for example, Everglades, Mammoth Cave, and Hawaii Volcanoes National Parks have little in common - except karst or pseudokarst, and a cultural past (even though these are very different). This diversity of geologic settings makes karst difficult to categorize and work with when designing a...
Authors
Eve L. Kuniansky