Publications
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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, February 1988
No abstract available.
Authors
John B. Townshend, R. V. O'Connell, L.Y. Torrence
The Manti, Utah, landslide
PART A: The Manti landslide is in Manti Canyon on the west side of the Wasatch Plateau in central Utah. In early June 1974, coincident with the melting of a snowpack, a rock slump/debris flow occurred on the south rim of Manti Canyon. Part of the slumped material mixed with meltwater and mobilized into a series of debris flows that traveled down the slope a distance of as much as 1.2 km. Most of t
Authors
R. W. Fleming, R. B. Johnson, R. L. Schuster, G. P. Williams
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 eroded fea
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
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 warning. De
Authors
Gerald F. Wieczorek
Large quaternary landslides in the central appalachian valley and ridge province near Petersburg, West Virginia
Geological mapping and photointerpretation of side-looking airborne radar images and color-infrared aerial photographs reveal two large Quaternary landslides in the Valley and Ridge province of the central Appalachians near Petersburg, W. Va. The Elkhorn Mountain rock avalanche occurs on the thrust-faulted northwestern flank of the Elkhorn Mountain anticlinorium. A minimum of 7 × 106 m3 of quartzi
Authors
C. Scott Southworth
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 order to ta
Authors
W.F. Stuart, A.W. Green
The geometric signature: Quantifying landslide-terrain types from digital elevation models
Topography of various types and scales can be fingerprinted by computer analysis of altitude matrices (digital elevation models, or DEMs). The critical analytic tool is the geometric signature, a set of measures that describes topographic form well enough to distinguish among geomorphically disparate landscapes. Different surficial processes create topography with diagnostic forms that are recogni
Authors
R.J. Pike
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 United Stat
Authors
Robert B. Jacobson, Elizabeth D. Cron, John P. McGeehin
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, December 1987
No abstract available.
Authors
John B. Townshend, R. V. O'Connell, L.Y. Torrence
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, November 1987
No abstract available.
Authors
John B. Townshend, R. V. O'Connell, L.Y. Torrence
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, October 1987
No abstract available.
Authors
John B. Townshend, R. V. O'Connell, L.Y. Torrence