Publications
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Crustal geophysics gives insight into new madrid seismic zone
No abstract available.
Authors
T. G. Hildenbrand, Eugene S. Schweig, Rufus D. Catchings, Victoria E. Langenheim, Walter D. Mooney, Thomas L. Pratt, W. D. Stanley
The Los Angeles Dam Story
In 1971, the near-failure of a dam during a magnitude 6.7 earthquake forced 80,000 people to evacuate their residences. In 1994, the replacement dam survived an almost identical earthquake with little damage. Underlying this progress in designing critical structures are years of research on the powerful shaking during large earthquakes.
Authors
Robert A. Page, David M. Boore, Robert F. Yerkes
Near real-time monitoring of seismic events and status of portable digital recorders using satellite telemetry
Near real-time monitoring of seismic events and status of portable 16-bit digital recorders has been established for arrays near Parkfield, Mammoth Lakes, and San Francisco, California. This monitoring system provides near real-time seismic event identification (rough location and magnitude) and a cost-effective means to maintain arrays at near 100% operational level. Principal objectives in the d
Authors
R.J. Mueller, Meei-You Lee, M.J.S. Johnston, Roger D. Borcherdt, G. Glassmoyer, S. Silverman
Seismic refraction measurements within the Peninsular terrane, south central Alaska
We present an interpretation of crustal seismic refraction data from the Peninsular terrane, one of the many exotic terranes that have been accreted to the continental margin of southern Alaska in the past 200 m.y. A seismic refraction line was collected along the Glenn Highway in the Copper River Basin of south central Alaska in 1984 and 1985, as part of the U.S. Geological Survey Trans‐Alaska Cr
Authors
Elizabeth L. Ambos, Walter D. Mooney, Gary S. Fuis
Seismological and engineering aspects of the 1995 Hyogoken-Nanbu (Kobe) earthquake
Immediately following the Jan. 17, 1995, Kobe earthquake, a reconnaissance team was organized under the auspices of the Earthquake Hazard Mitigation Program of the Engineering Directorate of the National Science Foundation. The mission of the team was to provide a timely, first-hand overview of the type and extent of the damage, and to provide the necessary background information for future resear
Authors
V. Bertero, Roger D. Borcherdt, Peter W. Clark, Douglas S. Dreger, Filip C. Filippou, D.A. Foutch, Lind Gee, Masahiko Higashino, Susumu Kono, Le-Wu Lu, Jack P. Moehle, Mark Murray, Julio Ramirez, B. Romanowicz, Nicholas Sitar, Christopher R. Thewalt, Stephen Tobriner, Andrew S. Whittaker, James K. Wight, Yan Xiao
The 9 June 94 Bolivian Deep Earthquake: An exceptional event in an extraordinary subduction zone
We investigate the physical setting of the Bolivian shock based on the history of the subducting Nazca plate, intraslab seismicity, deep seismic moment release, and seismic tomography. South America has two broad regions of reverse arc curvature. Subduction constrained to this unique geometry produces slab kinking contortions that may cause unusual slab thickening as they sink to the bottom of the
Authors
Stephen H. Kirby, E.A. Okal, E. Robert Engdahl
Frequency-moment distribution of deep earthquakes; Implications for the seismogenic zone at the bottom of slabs
We present a systematic investigation of the variation with depth of the frequency of earthquake occurrence vs. seismic moment based on 16 years of Harvard Centroid Moment Tensor (CMT) solutions. We analyze depth variations of earthquake size distribution in terms of variations in the absolute value of the slope of the regression of the logarithm of the population vs. seismic moment, a quantity kn
Authors
E.A. Okal, Stephen H. Kirby
Pay a little now, or a lot later
Odds are 2-in-3 that at least one disastrous earthquake will strike the San Francisco Bay Area before 2020. Faced with this threat, corporations and government agencies have stepped up efforts that will reduce future losses by billions of dollars.
Authors
William H. Bakun
Building safer structures
In this century, major earthquakes in the United States have damaged or destroyed numerous buildings, bridges, and other structures. By monitoring how structures respond to earthquakes and applying the knowledge gained, scientists and engineers are improving the ability of structures to survive major earthquakes. Many lives and millions of dollars have already been saved by this ongoing research.
Authors
Mehmet Ҫelebi, Robert A. Page, Linda Seekins
Seismic maps foster landmark legislation
When a powerful earthquake strikes an urban region, damage concentrates not only near the quake's source. Damage can also occur many miles from the source in areas of soft ground. In recent years, scientists have developed ways to identify and map these areas of high seismic hazard. This advance has spurred pioneering legislation to reduce earthquake losses in areas of greatest hazard.
Authors
Roger D. Borcherdt, Robert B. Brown, Robert A. Page, Carl M. Wentworth, James W. Hendley
Utah braces for the future
Almost 75 percent of Utah's population lives near the Wasatch Fault. Earth scientists have shown that this fault has repeatedly experienced strong earthquakes of magnitude 7 or larger and will continue to do so in the future. Efforts to increase public awareness of earthquake hazards in Utah have resulted in residents and community leaders taking actions that will save lives and reduce damage in f
Authors
Michael N. Machette, William M. Brown