Publications
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Preliminary inventory of debris-flow and flooding effects of the June 27, 1995, storm in Madison County, Virginia showing time sequence of positions of storm-cell center Preliminary inventory of debris-flow and flooding effects of the June 27, 1995, storm in Madison County, Virginia showing time sequence of positions of storm-cell center
No abstract available.
Authors
G. F. Wieczorek, B. A. Morgan, R. H. Campbell, R. C. Orndorff, W.C. Burton, C.S. Southworth, J. A. Smith
Slope map and locations of irrigation-induced landslides and seepage areas, Hagerman Fossil Beds National Monument, Idaho Slope map and locations of irrigation-induced landslides and seepage areas, Hagerman Fossil Beds National Monument, Idaho
No abstract available.
Authors
Alan F. Chleborad, Philip S. Powers
Aeromagnetic survey over US to advance geomagnetic research Aeromagnetic survey over US to advance geomagnetic research
A proposed high-altitude survey of the United States offers an exciting and cost effective opportunity to collect magnetic-anomaly data. Lockheed Martin Missile and Space Company is considering funding a reimbursable ER-2 aircraft (Figure 1) mission to collect synthetic aperture radar (SAR) imagery at an altitude of about 21 km over the conterminous United States and Alaska. The...
Authors
T.G. Hildenbrand, R.J. Blakely, W. J. Hinze, Gordon R. Keller, R.A. Langel, M. Nabighian, W. Roest
Site-response maps for the Los Angeles region based on earthquake ground motions Site-response maps for the Los Angeles region based on earthquake ground motions
Ground-motion records from aftershocks of the 1994 Northridge earthquake and main-shock records from the 1971 San Fernando, 1987 Whittier Narrows, 1991 Sierra Madre, and 1994 Northridge earthquakes are used to estimate site response in the urban Los Angeles, California, area. Two frequency bands are considered, 0.5-1.5 Hz and 2.0-6.0 Hz. Instrument characteristics prevented going to...
Authors
Stephen H. Hartzell, Stephen C. Harmsen, Arthur D. Frankel, David L. Carver, Edward Cranswick, Mark E. Meremonte, John A. Michael
The Loma Prieta, California, Earthquake of October 17, 1989: Main shock characteristics The Loma Prieta, California, Earthquake of October 17, 1989: Main shock characteristics
The October 17, 1989, Loma Prieta, Calif., earthquake (0004:15.2 G.m.t. October 18; lat 37.036º N., long 121.883º W.; 19-km depth) had a local magnitude (ML) of about 6.7, a surface-wave magnitude (MS) of 7.1, a seismic moment of 2.2x1019 N-m to 3.5x1019 N-m, a source duration of 6 to 15 s, and an average stress drop of at least 50 bars. Slip occurred on a dipping fault surface about 35...
Authors
Paul A. Spudich, Gregory C. Beroza, George Choy, John Boatwright, Stephen H. Hartzell, Gordon L. Stewart, Carlos Mendoza, Stephen Horton, John G. Anderson, Andres J. Mendez, Hiroo Kanamori, Kenji Satake, Michael Lisowski, Mark Hunter Murray, Jerry L. Svarc, Grant Marshall, Ross S. Stein, Karen McNally, Gerald W. Simila, Judy G. Brown, J.L. Nabelek, Ze’ev Reches, Mark D. Zoback, Jamison Steidl, Ralph J. Archuleta, Aaron A. Velasco, Thorne Lay, Jiajun Zhang, David J. Wald, Donald V. Helmberger, Thomas H. Heaton, Chesley R. Williams, Paul Segall, Francis T. Wu, Mingdong Wu, J.W. Rudnicki
Preliminary evaluation of the fire-related debris flows on Storm King Mountain, Glenwood Springs, Colorado Preliminary evaluation of the fire-related debris flows on Storm King Mountain, Glenwood Springs, Colorado
No abstract available.
Authors
Susan H. Cannon, Philip S. Powers, Roger A. Pihl, William P. Rogers
Look before you build: Geologic studies for safer land development in the San Francisco Bay area Look before you build: Geologic studies for safer land development in the San Francisco Bay area
This Circular provides a general description of the types of geologic hazards that exist throughout the United States. In nontechnical language this book describes how geologic information can be incorporated in the land-use development process and contains useful discussion of several examples from the San Francisco Bay area and elsewhere in the United States of how geologic information...
Authors
Martha Blair-Tyler
Relation of slow-moving landslides to earth materials and other factors in valleys of the Honolulu District of Oahu, Hawaii Relation of slow-moving landslides to earth materials and other factors in valleys of the Honolulu District of Oahu, Hawaii
No abstract available.
Authors
Stephen D. Ellen, L.S. Liu, R. W. Fleming, M.E. Reid, M. J. Johnsson
Inventory of landslides triggered by the 1994 Northridge, California earthquake Inventory of landslides triggered by the 1994 Northridge, California earthquake
The 17 January 1994 Northridge, California, earthquake (M=6.7) triggered more than 11,000 landslides over an area of about 10,000 km?. Most of the landslides were concentrated in a 1,000-km? area that includes the Santa Susana Mountains and the mountains north of the Santa Clara River valley. We mapped landslides triggered by the earthquake in the field and from 1:60,000-scale aerial...
Authors
Edwin L. Harp, Randall W. Jibson
Geomagnetism applications Geomagnetism applications
The social uses of geomagnetism include the physics of the space environment, satellite damage, pipeline corrosion, electric power-grid failure, communication interference, global positioning disruption, mineral-resource detection, interpretation of the Earth's formation and structure, navigation, weather, and magnetoreception in organisms. The need for continuing observations of the...
Authors
Wallace H. Campbell
Averting Surprises in the Pacific Northwest Averting Surprises in the Pacific Northwest
No abstract available.
Authors
Brian F. Atwater, Thomas S. Yelin, Craig S. Weaver, James W. Hendley
Can magma-injection and groundwater forces cause massive landslides on Hawaiian volcanoes? Can magma-injection and groundwater forces cause massive landslides on Hawaiian volcanoes?
Landslides with volumes exceeding 1000 km3 have occurred on the flanks of Hawaiian volcanoes. Because the flanks typically slope seaward no more than 12 °, the mechanics of slope failure are problematic. Limit-equilibrium analyses of wedge-shaped slices of the volcano flanks show that magma injection at prospective headscarps might trigger the landslides, but only under very restrictive...
Authors
R.M. Iverson