Publications
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Observations and modeling of seismic background noise Observations and modeling of seismic background noise
The preparation of this report had two purposes. One was to present a catalog of seismic background noise spectra obtained from a worldwide network of seismograph stations. The other purpose was to refine and document models of seismic background noise that have been in use for several years. The second objective was, in fact, the principal reason that this study was initiated and...
Authors
Jon R. Peterson
Directions of the US Geological Survey Landslide Hazards Reduction Program Directions of the US Geological Survey Landslide Hazards Reduction Program
The US Geological Survey (USGS) Landslide Hazards Reduction Program includes studies of landslide process and prediction, landslide susceptibility and risk mapping, landslide recurrence and slope evolution, and research application and technology transfer. Studies of landslide processes have been recently conducted in Virginia, Utah, California, Alaska, and Hawaii, Landslide...
Authors
G. F. Wieczorek
Analysis of the seismic origin of landslides: Examples from the New Madrid seismic zone Analysis of the seismic origin of landslides: Examples from the New Madrid seismic zone
By analyzing two landslides in the New Madrid seismic zone, we develop an approach for judging if a landslide or group of landslides of unknown origin was more likely to have formed as a result of earthquake shaking or in aseismic conditions. The two landslides analyzed are representative of two groups of land-slides that previous research on the geomorphology and regional distribution...
Authors
R.W. Jibson, D. K. Keefer
Heat flow from four new research drill holes in the Western Cascades, Oregon, U.S.A. Heat flow from four new research drill holes in the Western Cascades, Oregon, U.S.A.
Conceptual models of the thermal structure of the Oregon Cascade Range propose either (1) a narrow zone of magmatic heat sources, flanked by shallow heat-flow anomalies caused by lateral ground-water flow; or (2) a wide zone of magmatic heat sources, with localized, generally negligible ground-water effects. The proposed narrow heat source coincides with the Quaternary volcanic arc...
Authors
S. E. Ingebritsen, M. A. Scholl, D. R. Sherrod
The Golden bypass landslide, Golden, Colorado The Golden bypass landslide, Golden, Colorado
Slope instability along a new highway bypass in Golden, Colorado, became a major concern in 1993. Rains and snowmelt accelerated movement of a landslide that had begun to develop before the bypass was opened to traffic in July of 1991. The downslope movement of earth materials increased significantly in 1993. During the first few months of the year, the landslide pushed onto the west...
Authors
L.M. Highland, W. M. Brown
Maps of major active faults, Western Hemisphere, International Lithosphere Program (ILP), Project II-2; guidelines for U.S. database and map, June 1993 Maps of major active faults, Western Hemisphere, International Lithosphere Program (ILP), Project II-2; guidelines for U.S. database and map, June 1993
No abstract available.
Authors
K. M. Haller, M. N. Machette, R. L. Dart
Landslide hazards in Vermont Landslide hazards in Vermont
No abstract available.
Authors
Charles A. Baskerville, Fitzhugh T. Lee, Charles A. Ratte
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
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
Volcanic activity in Alaska: September 1991-September 1992 Volcanic activity in Alaska: September 1991-September 1992
More than 40 historically active volcanic centers, each consisting of one or more volcanoes, are located on the Alaska Peninsula and Aleutian Islands (see map on next page). On average, at least one of these volcanoes erupts each year.
Authors
Game McGimsey
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