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Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska, January 1981

No abstract available.
Authors
John B. Townshend, J.E. Papp, E.A. Sauter, S.P. Tilton

Preliminary design study for a National Digital Seismograph Network

Recently, the National Research Council published a report by the Panel on National, Regional, and Local Seismograph Networks of the Committee on Seismology in which the principal recommendation was for the establishment of a national digital seismograph network (NDSN). The Panel Report (Bolt, 1980) addresses both the need and the scientific requirements for the new national network. The purpose o
Authors
Jon Peterson, Charles R. Hutt

A model for creeping flow in landslides

No abstract available.
Authors
William Z. Savage, A.F. Chleborad

Annual and semiannual variations of the geomagnetic field at equatorial locations

For a year of quiet solar-activity level, geomagnetic records from American hemisphere observatories located between about 0?? and 30?? north geomagnetic latitude were used to compare the annual and semiannual variations of the geomagnetic field associated with three separate contributions: (a) the quiet-day midnight level, MDT; (b) the solar-quiet daily variation, Sq; (c) the quiet-time lunar sem
Authors
W.H. Campbell

Small landslide types and controls in glacial deposits: Lower Skagit river drainage, northern cascade range, Washington

Observations of 167 small, shallow landslides spanning a 22-year period on extensively logged slopes of Quaternary terraces in the lower Skagit and Baker Valleys, Washington, shows that there is a relationship between the common slope failures in this area and the slope angle, stratigraphy, and logging practices. Landslide frequency increases upvalley, as do mean annual precipitation and the frequ
Authors
P.L. Heller