Publications
Filter Total Items: 7611
Mapping nuclear craters on Enewetak Atoll, Marshall Islands Mapping nuclear craters on Enewetak Atoll, Marshall Islands
In 1984, the U.S. Geological Survey conducted a detailed geologic analysis of two nuclear test craters at Enewetak Atoll, Marshall Islands, on behalf of the Defense Nuclear Agency. A multidisciplinary task force mapped the morphology, surface character, and subsurface structure of two craters, OAK and KOA. The field mapping techniques include echo sounding, sidescan sonar imaging, single...
Authors
John C. Hampson
An interpretation of induced electric currents in long pipelines caused by natural geomagnetic sources of the upper atmosphere An interpretation of induced electric currents in long pipelines caused by natural geomagnetic sources of the upper atmosphere
Electric currents in long pipelines can contribute to corrosion effects that limit the pipe's lifetime. One cause of such electric currents is the geomagnetic field variations that have sources in the Earth's upper atmosphere. Knowledge of the general behavior of the sources allows a prediction of the occurrence times, favorable locations for the pipeline effects, and long-term...
Authors
W.H. Campbell
Antarctica: Measuring glacier velocity from satellite images Antarctica: Measuring glacier velocity from satellite images
Many Landsat images of Antarctica show distinctive flow and crevasse features in the floating part of ice streams and outlet glaciers immediately below their grounding zones. Some of the features, which move with the glacier or ice stream, remain visible over many years and thus allow time-lapse measurements of ice velocities. Measurements taken from Landsat images of features on Byrd...
Authors
Baerbel K. Lucchitta, H.M. Ferguson
Seismically induced landslides: current research by the US Geological Survey. Seismically induced landslides: current research by the US Geological Survey.
We have produced a regional seismic slope-stability map and a probabilistic prediction of landslide distribution from a postulated earthquake. For liquefaction-induced landslides, in situ measurements of seismically induced pore-water pressures have been used to establish an elastic model of pore pressure generation. -from Authors
Authors
E. L. Harp, R. C. Wilson, D. K. Keefer, G. F. Wieczorek
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: April 1986 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: April 1986
No abstract available.
Authors
John B. Townshend, J.E. Papp, H.K. Rex, L.Y. Torrence, P.A. Franklin
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1986 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: September 1986
No abstract available.
Authors
John B. Townshend, H.K. Rex, L.Y. Torrence
A model for the plastic flow of landslides A model for the plastic flow of landslides
To further the understanding of the mechanics of landslide flow, we present a model that predicts many of the observed attributes of landslides. The model is based on an integration of the hyperbolic differential equations for stress and velocity fields in a two-dimensional, inclined, semi-infinite half-space of Coulomb plastic material under elevated pore pressure and gravity. Our...
Authors
William Z. Savage, William K. Smith
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: March 1986 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: March 1986
No abstract available.
Authors
John B. Townshend, J.E. Papp, H.K. Rex, L.Y. Torrence, P.A. Franklin
Book review of Slope Instability, D. Brunsden and D.B. Prior, eds., Wiley, New York, 620 p. Book review of Slope Instability, D. Brunsden and D.B. Prior, eds., Wiley, New York, 620 p.
No abstract available.
Authors
Richard M. Iverson
Signs of a northeastern earthquake? Signs of a northeastern earthquake?
No abstract available.
Authors
R.L. Kerr
Parkfield earthquake looks to be on schedule Parkfield earthquake looks to be on schedule
No abstract available.
Authors
R. A. Kerr