Publications
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Landslides triggered by earthquakes in the central Mississippi Valley, Tennessee and Kentucky Landslides triggered by earthquakes in the central Mississippi Valley, Tennessee and Kentucky
We mapped 221 large (more than 200 ft across) landslides of three morphologically distinct types on the bluffs bordering the Mississippi alluvial plain in western Tennessee and Kentucky Old coherent slides (146 landslides, or 66 percent of the total) include translational block slides and single and multiple-block rotational slumps, all of which are covered by mature vegetation and have...
Authors
Randall W. Jibson, David K. Keefer
Landslides, Floods, and Marine Effects of the Storm of January 3-5, 1982, in the San Francisco Bay Region, California Landslides, Floods, and Marine Effects of the Storm of January 3-5, 1982, in the San Francisco Bay Region, California
A catastrophic rainstorm in central California on January 3-5,1982, dropped as much as half the mean annual precipitation within a period of about 32 hours, triggering landslides and floods throughout 10 counties in the vicinity of the San Francisco Bay. More than 18,000 of the slides induced by the storm transformed into debris flows that swept down hillslopes or drainages with little...
Authors
Gerald F. Wieczorek
Geologic and geotechnical conditions adjacent to the Turnagain Heights landslide, Anchorage, Alaska Geologic and geotechnical conditions adjacent to the Turnagain Heights landslide, Anchorage, Alaska
No abstract available.
Authors
Randall G. Updike, H. W. Olsen, H. R. Schmoll, Y.K. Kharaka, K.H. Stokoe
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, August 1988 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, August 1988
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, L.Y. Torrence
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, March 1988 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, March 1988
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, L.Y. Torrence
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, November 1988 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, November 1988
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, L.Y. Torrence
New trend- trigonometric model for interpolation and prediction of the geomagnetic field utilizing the new DGRF models New trend- trigonometric model for interpolation and prediction of the geomagnetic field utilizing the new DGRF models
At the IUGG Assembly at Vancouver during August 1987 new definitive geomagnetic reference field (DGRF) models to degree 10 for 1945, 1950, 1955, and 1960 were adopted by IAGA. Before these new DGRF models were accepted, the author developed a trend and trigonometric model (old trig model) based on the models IGRF 1945, IGRF 1950, IGRF 1955, IGRF 1960, DGRF 1965, DGRF 1970, DGRF 1975...
Authors
L.R. Alldredge
Range indices of geomagnetic activity Range indices of geomagnetic activity
The simplest index of geomagnetic activity is the range in nT from maximum to minimum value of the field in a given time interval. The hourly range R was recommended by IAGA for use at observatories at latitudes greater than 65??, but was superceded by AE. The most used geomagnetic index K is based on the range of activity in a 3 h interval corrected for the regular daily variation. In...
Authors
W.F. Stuart, A.W. Green
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, December 1988 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, December 1988
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, L.Y. Torrence
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, April 1988 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, April 1988
No abstract available.
Authors
John B. Townshend, R. V. O’Connell, L.Y. Torrence
Real-time landslide warning during heavy rainfall Real-time landslide warning during heavy rainfall
A real-time system for issuing warnings of landslides during major storms is being developed for the San Francisco Bay region, California. The system is based on empirical and theoretical relations between rainfall and landslide initiation, geologic determination of areas susceptible to landslides, real-time monitoring of a regional network of telemetering rain gages, and National...
Authors
David K. Keefer, R. C. Wilson, R. K. Mark, E. E. Brabb, W. M. Brown, S. D. Ellen, E. L. Harp, G. F. Wieczorek, C.S. Alger, R.S. Zatkin
Preliminary results from a study of natural slope failures triggered by the storm of November 3.5.1985, Germany Valley, West Virginia and Virginia: Chapter 4 in Landslides of eastern North America Preliminary results from a study of natural slope failures triggered by the storm of November 3.5.1985, Germany Valley, West Virginia and Virginia: Chapter 4 in Landslides of eastern North America
During the first five days of November 1985, a low-pressure system in the Ohio River valley combined with a low-pressure system referred to as Tropical Storm Juan to produce heavy rainfall in the Potomac, James, and Rappahannock River basins. Severe flooding accompanied the rainfall; 43 lives were lost and the flood was estimated to be the most expensive natural disaster of 1985 in the...
Authors
Robert B. Jacobson, Elizabeth D. Cron, John P. McGeehin