Publications
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Revised long-term creep rates on the Hayward Fault, Alameda and Contra Costa Counties, California 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...
Authors
James J. Lienkaemper, Jon S. Galehouse
Land-based high-resolution seismic-reflection surveys of seven sites in Duval and St. Johns Counties, northeastern Florida Land-based high-resolution seismic-reflection surveys of seven sites in Duval and St. Johns Counties, northeastern Florida
No abstract available.
Authors
J. K. Odum, W. J. Stephenson, R. A. Williams, D. M. Worley, D. J. Toth, R. M. Spechler, Thomas L. Pratt
Results of site investigation and instrumentation of the Keno Gulch landslide/debris-flow source area, Aspen, Colorado Results of site investigation and instrumentation of the Keno Gulch landslide/debris-flow source area, Aspen, Colorado
No abstract available.
Authors
A.F. Chleborad, W. L. Ellis, D.F. Kibler
Lahars of Mount Pinatubo, Philippines 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...
Authors
Christopher G. Newhall, Peter H. Stauffer, James W. Hendley
Debris-flow hazards in the United States Debris-flow hazards in the United States
No abstract available.
Authors
Lynn Highland, Stephenson D. Ellen, Sarah B. Christian, William M. Brown
Continents as lithological icebergs: The importance of buoyant lithospheric roots Continents as lithological icebergs: The importance of buoyant lithospheric roots
An understanding of the formation of new continental crust provides an important guide to locating the oldest terrestrial rocks and minerals. We evaluated the crustal thicknesses of the thinnest stable continental crust and of an unsubductable oceanic plateau and used the resulting data to estimate the amount of mantle melting which produces permanent continental crust. The lithospheric...
Authors
D.H. Abbott, R. Drury, Walter D. Mooney
Predicting landslide vegetation in patches on landscape gradients in Puerto Rico Predicting landslide vegetation in patches on landscape gradients in Puerto Rico
We explored the predictive value of common landscape characteristics for landslide vegetative stages in the Luquillo Experimental Forest of Puerto Rico using four different analyses. Maximum likelihood logistic regression showed that aspect, age, and substrate type could be used to predict vegetative structural stage. In addition it showed that the structural complexity of the vegetation...
Authors
R.W. Myster, J.R. Thomlinson, M. C. Larsen
Evidence from flank ridges for long-term diminishing movements of the Slumgullion landslide, Hinsdale County, Colorado Evidence from flank ridges for long-term diminishing movements of the Slumgullion landslide, Hinsdale County, Colorado
No abstract available.
Authors
Mario Parise, Andrea Moscariello, Robert W. Fleming
El Nino and the National Landslide Hazard Outlook for 1997-1998 El Nino and the National Landslide Hazard Outlook for 1997-1998
No abstract available.
Authors
Jonathan W. Godt, Lynn M. Highland, William Z. Savage
Benefits of volcano monitoring far outweigh costs - the case of Mount Pinatubo Benefits of volcano monitoring far outweigh costs - the case of Mount Pinatubo
The climactic June 1991 eruption of Mount Pinatubo, Philippines, was the largest volcanic eruption in this century to affect a heavily populated area. Because it was forecast by scientists from the Philippine Institute of Volcanology and Seismology and the U.S. Geological Survey, civil and military leaders were able to order massive evacuations and take measures to protect property...
Authors
Chris G. Newhall, James W. Hendley, Peter H. Stauffer
Executive summary of vision and options for the future of the US National Strong-Motion Program Executive summary of vision and options for the 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'...
Authors
Introduction to special section: The Trans-Alaska Crustal Transect (TACT) across Arctic Alaska Introduction to special section: The Trans-Alaska Crustal Transect (TACT) across Arctic Alaska
This special section of the Journal of Geophysical Research addresses the composition and structural evolution of the lithosphere in northern Alaska. Investigations reported in this section were mainly undertaken as part of the Trans‐Alaska Crustal Transect (TACT), an integrated geological and geophysical transect of the entire Alaskan lithosphere along a north‐south corridor undertaken...
Authors
George Plafker, Walter D. Mooney