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Future of the US National Strong-Motion Program

These reports are presented in response to a charge of the Earthquake Hazards Reduction Program (EHRP) Program Council of the U.S. Geological Survey to 'define the future of the USGS National Strong-Motion Program (NSMP)' (Appendix A). The council requested that a 'Vision Paper' and an 'Options Document' be prepared. Each of these reports is a separate document. The 'Executive Summary' of both rep
Authors

Revised long-term creep rates on the Hayward Fault, Alameda and Contra Costa Counties, California

Although the Hayward fault is a source of major earthquakes, it also creeps or slips aseismically, and has done so steadily for several decades (certainly since 1921 and probably since 1869). Most of the fault creeps between 3 and 6 mm/yr, except for a 4- to 6-km-long segment near its south end that creeps at about 9 mm/yr. We present results of our recent surveys to recover angles and deflection
Authors
James J. Lienkaemper, Jon S. Galehouse

El Nino and the National Landslide Hazard Outlook for 1997-1998

No abstract available.
Authors
Jonathan W. Godt, Lynn M. Highland, William Z. Savage

Lahars of Mount Pinatubo, Philippines

On June 15, 1991, Mount Pinatubo in the Philippines exploded in the second largest volcanic eruption on Earth this century. This eruption deposited more than 1 cubic mile (5 cubic kilometers) of volcanic ash and rock fragments on the volcano's slopes. Within hours, heavy rains began to wash this material down into the surrounding lowlands in giant, fast-moving mudflows called lahars. In the next f
Authors
Christopher G. Newhall, Peter H. Stauffer, James W. Hendley
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