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Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: February 1978
The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.
Authors
J.B. Townshend, J.E. Papp, M.J. Moorman, S.P. Tilton
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: March 1978
The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.
Authors
J.B. Townshend, J.E. Papp, S.P. Tilton
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: January 1978
The preliminary geomagnetic data included here is made available to scientific personnel and organizations, as part of a cooperative effort and on a data exchange basis because of the early need by some users. To avoid delay, all of the data is copied from original forms processed at the observatory; therefore it should be regarded as preliminary.
Authors
J.B. Townshend, J.E. Papp, M.J. Moorman, S.P. Tilton
Map showing landslides and areas most susceptible to sliding in Beaver Quadrangle and portions of the Beaver Falls and New Galilee quadrangles, Beaver County, Pennsylvania
No abstract available.
Authors
John S. Pomeroy
Landslides and related features, Ohio, West Virginia and Pennsylvania [Clarksburg quadrangle]
No abstract available.
Authors
Robert J. Hackman, Roger E. Thomas
Landslides and related features, Ohio, West Virginia and Pennsylvania [Canton quadrangle]
No abstract available.
Authors
William E. Davies, Gregory C. Ohlmacher, John S. Pomeroy
Relationship of landslides to fractures in Potomac Group deposits, Fairfax County, Virginia
Landsliding is a common problem in eastern Fairfax County, an area underlain by Potomac Group (Lower Cretaceous) Coastal Plain deposits of silt and clay interbedded and interfingered with sand and gravel. The slides commonly are present in clay and silt that, on the basis of laboratory tests, appear to be much too strong to have failed. However, the very plastic silt and clay deposits are commonly
Authors
William H. Langer, Stephen F. Obermeier
Pillar Mountain Landslide, Kodiak, Alaska
Pillar Mountain landslide on the southeast face of Pillar Mountain is about 915 m (3,000 ft) southwest of the city of Kodiak, Alaska. The landslide is about 520 m (1,700 ft) wide at its base and extends approximately from sea level to an altitude of about 343 m (1,125 ft). The slide developed on an ancient and apparently inactive landslide. Renewed movement was first detected on December 5, 1971,
Authors
Reuben Kachadoorian, Willard H. Slater
FORTRAN programs for calculating nonlinear seismic ground response in two dimensions
The programs described here were designed for calculating the nonlinear seismic response of a two-dimensional configuration of soil underlain by a semi-infinite elastic medium representing bedrock. There are two programs. One is for plane strain motions, that is, motions in the plane perpendicular to the long axis of the structure, and the other is for antiplane strain motions, that is motions par
Authors
W. B. Joyner
Estimation of ground motion parameters
Strong motion data from western North America for earthquakes of magnitude greater than 5 are examined to provide the basis for estimating peak acceleration, velocity, displacement, and duration as a function of distance for three magnitude classes. Data from the San Fernando earthquake are examined to assess the effects of associated structures and of geologic site conditions on peak recorded mot
Authors
David M. Boore, Adolph A. Oliver, Robert A. Page, William B. Joyner
Historic ground failures in Northern California triggered by earthquakes
A major source of earthquake-related damage and casualties in northern California has been ground failures generated by the seismic shaking, including landslides, lateral spreads, ground settlement, and surface cracks. The historical record shows that, except for offshore shocks, the geographic area affected and the quantity and general severity of ground failures increase markedly with Richter ma
Authors
T. Leslie Youd, Seena N. Hoose
Feasibility and cost of using a computer to prepare landslide susceptibility maps of the San Francisco Bay region, California
No abstract available.
Authors
Evelyn B. Newman, Arthur R. Paradis, Earl E. Brabb