Publications
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Geotechnical properties of debris-flow sediments and slurries
Measurements of geotechnical properties of various poorly sorted debris-flow sediments and slurries (??? 32 mm diameter) emphasize their granular nature, and reveal that properties of slurries can differ significantly from those of compacted sediments. Measurements show that: (1) cohesion probably offers little resistance to shear in most debris flows under low confining stresses normally found in
Authors
J. J. Major, R. M. Iverson, D.F. McTigue, S. Macias, B.K. Fiedorowicz
Debris-flow initiation experiments using diverse hydrologic triggers
Controlled debris-flow initiation experiments focused on three hydrologic conditions that can trigger slope failure: localized ground-water inflow; prolonged moderate-intensity rainfall; and high-intensity rainfall. Detailed monitoring of slope hydrology and deformation provided exceptionally complete data on conditions preceding and accompanying slope failure and debris-flow mobilization. Ground-
Authors
Mark E. Reid, Richard G. LaHusen, Richard M. Iverson
Depositional processes in large-scale debris-flow experiments
This study examines the depositional process and characteristics of deposits of large‐scale experimental debris flows (to 15 m3) composed of mixtures of gravel (to 32 mm), sand, and mud. The experiments were performed using a 95‐m‐long, 2‐m‐wide debris‐flow flume that slopes 31°. Following release, experimental debris flows invariably developed numerous shallow (∼ 10 cm deep) surges. Sediment tran
Authors
J. J. Major
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
Debris-flow hazards in areas affected by the June 27, 1995, storm in Madison County, Virginia
A severe storm on June 27, 1995 triggered hundreds of rock, debris and soil slides from the steep hillsides of Madison County, Virginia. Most of these transformed into debris flows that inundated areas downslope causing damage to structures, roads, utilities, livestock and crops. This report contains an analysis of areas susceptible to debris flows including an examination of source areas, channel
Authors
B. A. Morgan, G. F. Wieczorek, R. H. Campbell, P. L. Gori
Preliminary maps showing rainfall thresholds for debris-flow activity, San Francisco Bay region, California
No abstract available.
Authors
Raymond C. Wilson, Angela S. Jayko
Index to detailed maps of landslides in the San Francisco Bay region, California
No abstract available.
Authors
Richard J. Pike
Map showing principal debris-flow source areas in the San Francisco Bay region, California
No abstract available.
Authors
Stephen D. Ellen, Robert K. Mark, Gerald F. Wieczorek, Carl M. Wentworth, David W. Ramsey, Thomas E. May
Preliminary analysis of landslides triggered by the January 17, 1994, Northridge earthquake in the Santa Susana quadrangle, California
No abstract available.
Authors
Mario Parise, R. W. Jibson
Geologic hazards and relative slope stability of the inactive part of the Slumgullion Landslide, southwestern Colorado
No abstract available.
Authors
Mario Parise, Andrea Moscariello
Landslides triggered by the April 1997, tropical storms in Pohnpei, Federated States of Micronesia
No abstract available.
Authors
E. L. Harp, W. Z. Savage