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Scenic drive landslide of January-March 1998, La Honda, San Mateo County, California

The small rural town of La Honda, Calif., is an unincorporated region of San Mateo County situated in the Santa Cruz Mountains in the western part of the San Francisco peninsula. Much of the town is underlain by a previously recognized ancient landslide complex. The ancient slide complex covers about 1.0 to 1.25 km2, parts of which have been historically active. This report describes a recent land
Authors
Angela S. Jayko, Michael J. Rymer, Carol S. Prentice, Ray C. Wilson, Ray E. Wells

A method for producing digital probabilistic seismic landslide hazard maps: An example from the Los Angeles, California, area

The 1994 Northridge, California, earthquake is the first earthquake for which we have all of the data sets needed to conduct a rigorous regional analysis of seismic slope instability. These data sets include (1) a comprehensive inventory of triggered landslides, (2) about 200 strong-motion records of the mainshock, (3) 1:24,000-scale geologic mapping of the region, (4) extensive data on engineerin
Authors
Randall W. Jibson, Edwin L. Harp, John A. Michael

Pebble orientation on large, experimental debris-flow deposits

Replicable, pronounced orientation of discoid pebbles (≥8 mm) embedded on surfaces of large (∼10 m3) experimental debris-flow deposits reveals that strongly aligned, imbricate fabric can develop rapidly over short distances in mass flows. Pebble long axes aligned subparallel to deposit margins as well as subparallel to margins of surge waves arrested within the deposits. Pebble alignment exhibited
Authors
J. J. Major

The frequency and distribution of recent landslides in three montane tropical regions of Puerto Rico

Landslides are common in sttep mountainous areas of Puerto Rico where mean annual rainfall and the frequency of intense storms are high. Each year, landslides cause extensive damage to property and coccasionally result in loss of life. Average population density is high, 422 people/km2, and is increasing. This increase in population density is accompanied by growing stress on the natural environme
Authors
M. C. Larsen, A. J. Torres-Sanchez

Surface deformation as a guide to kinematics and three-dimensional shape of slow-moving, clay-rich landslides, Honolulu, Hawaii

Two slow-moving landslides in Honolulu, Hawaii, were the subject of photogrammetric measurements, field mapping, and subsurface investigation to learn whether surface observations can yield useful information consistent with results of subsurface investigation. Mapping focused on structural damage and on surface features such as scarps, shears, and toes. The x-y-z positions of photo-identifiable p
Authors
R.L. Baum, J. Messerich, R. W. Fleming

Temperature, snowmelt, and the onset of spring season landslides in the central Rocky Mountains

Snow meltwater (snowmelt) that seeps into the subsurface is a major factor contributing to the development of landslides during the spring in mountainous areas of the Rocky Mountain region. An examination of historical temperature data in relation to spring season landslide occurrences reveals an association between the landslide events and intervals of rising temperatures that accelerate the prod
Authors
Alan F. Chleborad

Digital compilation of landslide overview map of the conterminous United States

This dataset consists of polygons enclosing areas of landslide incidence and susceptibility for the conterminous United States.
Authors
Jonathan W. Godt, Dorothy H. Radbruch-Hall
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