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Landslide susceptibility in the Tully Valley area, Finger Lakes region, New York Landslide susceptibility in the Tully Valley area, Finger Lakes region, New York

As a consequence of a large landslide in the Tully Valley, Onondaga County, New York, an investigation was undertaken to determine the factors responsible for the landslide in order to develop a model for regional landslide susceptibility. The April 27, 1993 Tully Valley landslide occurred within glacial lake clays overlain by till and colluvium on gentle slopes of 9-12 degrees. The...
Authors
Stefan Jager, Gerald E. Wieczorek

Giant Hawaiian landslides Giant Hawaiian landslides

Sixty-eight landslides more than 20 km long are present along a 2200 km segment of the Hawaiian Ridge from near Midway to Hawaii. Some of the landslides exceed 200 km in length and 5000 km3 in volume, ranking them among the largest on Earth. Most of these giant landslides were discovered during a mapping program of the U.S. Hawaiian Exclusive Economic zone from 1986 to 1991 utilizing the...
Authors
J.G. Moore, W. R. Normark, R. T. Holcomb

The Loma Prieta, California, Earthquake of October 17, 1989: Strong ground motion The Loma Prieta, California, Earthquake of October 17, 1989: Strong ground motion

Strong ground motion generated by the Loma Prieta, Calif., earthquake (MS~7.1) of October 17, 1989, resulted in at least 63 deaths, more than 3,757 injuries, and damage estimated to exceed $5.9 billion. Strong ground motion severely damaged critical lifelines (freeway overpasses, bridges, and pipelines), caused severe damage to poorly constructed buildings, and induced a significant...
Authors
Roger D. Borcherdt, A. Gerald Brady, A.F. Shakal, V.F. Cormier, Wei-Jou Su, Jeffry L. Stevens, Steven M. Day, John E. Vidale, Ornella Bonamassa, Paul G. Somerville, Nancy F. Smith, Robert Graves, Gary Glassmoyer, Kyle Rollins, Michael D. Mchood, Roman D. Hryciw, Matthew Homolka, Scott E. Shewbridge, Harvey Carlisle, Nicholas Sitar, Rodrigo Salgado, Pedro de Alba, J. Benoit, Daniel G. Pass, John Carter, T. Leslie Youd, E. H. Field, Susan E. Hough, K.H. Jacob, Paul A. Friberg, Arthur D. Frankel, R. Busby, Robert A. Williams, Edward Cranswick, Kenneth W. King, Grant T. Lindley, Ralph J. Archuleta, Janice M. Murphy, Steven G. Wesnousky

A pore-pressure diffusion model for estimating landslide-inducing rainfall A pore-pressure diffusion model for estimating landslide-inducing rainfall

Many types of landslide movement are induced by large rainstorms, and empirical rainfall intensity/duration thresholds for initiating movement have been determined for various parts of the world. In this paper, I present a simple pressure diffusion model that provides a physically based hydrologic link between rainfall intensity/duration at the ground surface and destabilizing pore-water...
Authors
M.E. Reid

Modeling and analysis of the 1949 Narrows landslide, Tacoma, Washington Modeling and analysis of the 1949 Narrows landslide, Tacoma, Washington

A large landslide failed catastrophically along steep, 90-m (300-ft) high bluffs overlooking the waters of Puget Sound at Tacoma, Washington, in April of 1949, three days after the region was struck by a magnitude 7.1 earthquake. The area of failure was investigated to estimate the static and seismic stability of the pre-earthquake slope and to identify factors that contributed to the...
Authors
A.F. Chleborad

Preliminary geomagnetic paleointensities from Long Valley Caldera, California Preliminary geomagnetic paleointensities from Long Valley Caldera, California

Paleointensities are being determined in order to characterize geomagnetic intensity variations during Quaternary time. Because the geomagnetic field acts as a shield against cosmic radiation, its intensity directly affects the production rate of radiocarbon (^C) in the upper atmosphere. Coe and others (1978) showed that the variation in dipole moment during Holocene time is nearly...
Authors
Edward A. Mankinen

Potential for seepage erosion of landslide dam Potential for seepage erosion of landslide dam

The failure potential of the debris-avalanche dam at Castle Lake near Mount St. Helens, Washington, by three processes of seepage erosion (1) Heave; (2) piping; and (3) internal erosion, is examined. Results indicated that the dam is stable against piping but potentially locally unstable against heave. -from Authors
Authors
W. Meyer, R. L. Schuster, M. A. Sabol
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