Publications
Filter Total Items: 2342
Time-dependent landslide probability mapping Time-dependent landslide probability mapping
Case studies where time of failure is known for rainfall-triggered debris flows can be used to estimate the parameters of a hazard model in which the probability of failure is a function of time. As an example, a time-dependent function for the conditional probability of a soil slip is estimated from independent variables representing hillside morphology, approximations of material...
Authors
Russell H. Campbell, Richard L. Bernknopf
Map of debris-flow hazard in the Honolulu District of Oahu, Hawaii Map of debris-flow hazard in the Honolulu District of Oahu, Hawaii
No abstract available.
Authors
Stephen D. Ellen, Robert K. Mark, Susan H. Cannon, Donna L. Knifong
Instrumental shaking thresholds for seismically induced landslides and preliminary report on landslides triggered by the October 17, 1989, Loma Prieta, California earthquake Instrumental shaking thresholds for seismically induced landslides and preliminary report on landslides triggered by the October 17, 1989, Loma Prieta, California earthquake
The generation of seismically induced landslide depends on the characteristics of shaking as well as mechanical properties of geologic materials. A very important parameter in the study of seismically induced landslide is the intensity based on a strong-motion accelerogram: it is defined as Arias intensity and is proportional to the duration of the shaking record as well as the amplitude...
Authors
E. L. Harp
Kinematics of the Aspen Grove landslide, Ephraim Canyon, central Utah Kinematics of the Aspen Grove landslide, Ephraim Canyon, central Utah
No abstract available.
Authors
Rex L. Baum, Robert W. Fleming, Arvid M. Johnson
Assessment and prediction of debris-flow hazards Assessment and prediction of debris-flow hazards
Study of debris-flow geomorphology and initiation mechanism has led to better understanding of debris-flow processes. This paper reviews how this understanding is used in current techniques for assessment and prediction of debris-flow hazards.
Authors
Gerald F. Wieczorek
Water fact sheet, history of landslides and debris flows at Mount Rainier Water fact sheet, history of landslides and debris flows at Mount Rainier
Many landslides and debris flows have originated from Mount Rainier since the retreat of glaciers from Puget Sound about 10,000 years ago. The recurrent instability is due to several factors--height of the steep-sided volcanic cone, frequent volcanic activity, continuous weakening of rock by steam and hot, chemical-laden water, and exposure of unstable areas as the mountains glaciers...
Authors
K. M. Scott, J.W. Vallance
Description, origin, and implications of a newly identified Slumgullion landslide deposit, San Juan Mountains, southwestern Colorado Description, origin, and implications of a newly identified Slumgullion landslide deposit, San Juan Mountains, southwestern Colorado
No abstract available.
Authors
A.F. Chleborad
Age and origin of fluvial terraces in the central Coast Range, western Oregon Age and origin of fluvial terraces in the central Coast Range, western Oregon
No abstract available.
Authors
Stephen F. Personius
Differentiation of debris-flow and flash-flood deposits: implications for paleoflood investigations Differentiation of debris-flow and flash-flood deposits: implications for paleoflood investigations
Debris flows and flash floods are common geomorphic processes in the Colorado Rocky Mountain Front Range and foothills. Usually, debris flows and flash floods are associated with excess summer rainfall or snowmelt, in areas were unconsolidated surficial deposits are relatively thick and slopes are steep. In the Front Range and foothills, flash flooding is limited to areas below about...
Authors
Christopher F. Waythomas, Robert D. Jarrett
Mapping debris-flow hazard in Honolulu using a DEM Mapping debris-flow hazard in Honolulu using a DEM
A method for mapping hazard posed by debris flows has been developed and applied to an area near Honolulu, Hawaii. The method uses studies of past debris flows to characterize sites of initiation, volume at initiation, and volume-change behavior during flow. Digital simulations of debris flows based on these characteristics are then routed through a digital elevation model (DEM) to...
Authors
Stephen D. Ellen, Robert K. Mark