Publications
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Experimental deformation of polycrystalline H2O ice at high pressure and low temperature: Preliminary results
Interest in the mechanical properties of water ice under the conditions in which it exists in the outer solar system has motivated the development and use of a new high‐pressure, low‐temperature triaxial deformation apparatus. Constant displacement rate tests on 70 samples of pure polycrystalline water ice have been performed at temperatures 77≤≤258 K, confining pressures 0.1≤≤350 MPa, and strain
Authors
W. B. Durham, H. C. Heard, Stephen H. Kirby
Rheology of the lithosphere
During the quadrennial term 1979–1982, major advances have been made in our knowledge of the rheology of the oceanic lithosphere by the skillful combination of experimental and theoretical rock mechanics, seismology and marine geophysics in increasingly sophisticated models for the flexure of the oceanic lithosphere at seamounts and island chains, along transform faults, and at subduction zones. T
Authors
Stephen H. Kirby
The Galilean satellite geological mapping program
The Galilean Satellite Geological Mapping Program was established to illuminate detailed geologic relations on the four large satellites of Jupiter. The program involves about 40 investigators from various universities, reseach institutes, and government offices in the United Sttes, England, Germany, and Italy. A total of 24 researchers have been assigned to map 10 quadrangles on Ganymede, 15 to m
Authors
Baerbel K. Lucchitta
Channels and valleys on Mars
The discovery of channels, valleys, and related features of aqueous origin on Mars is of profound importance in comparative planetology. Models of the evolution of planetary surfaces and atmospheres must be reconciled with the diversity, abundance, and origins of channels and valleys on Mars. The term “channel” is properly restricted to those Martian troughs that display at least some evidence of
Authors
Chryse Basin channels: low-gradients and ponded flows.
Gradients on the floors of the Martian outflow channels that are derived from radar-elevation profiles across Lunae Planum and Chryse Basin have much lower values than those obtained from the U.S. Geological Survey's topographic map. Whereas the gradients of Maja and Ares Valles are similar to those of the catastrophic flood channels in the Scablands of Washington State, the gradients of Simud and
Authors
Baerbel K. Lucchitta, H.M. Ferguson
Preparing a Detailed Landslide-Inventory Map for Hazard Evaluation and Reduction
A method of preparing a detailed landslide-inventory map has been developed which provides the engineering geologist with the basic information for evaluating and reducing landslide hazards or risk on a regional or community level. For each landslide, the map depicts state of activity, certainty of identification, dominant type of slope movement, primary direction of movement, estimated thickness
Authors
Gerald F. Wieczorek
Proceedings of Conference XVIII: a workshop on "Continuing actions to reduce losses from earthquakes in the Mississippi Valley area," 24-26 May, 1982, St. Louis, Missouri
The U.S. Geological Survey and the Federal Emergency Management Agency
sponsored a workshop on, "Continuing Actions to Reduce Losses from Earthquakes
in the Mississippi Valley area," in St. Louis, Missouri, on May 24-26, 1982.
Seventy individuals (see Appendix A) representing local, State, and Federal
government; business and industry; and the research community participated in
the three day
Authors
Walter W. Hays, Carla Kitzmiller
Summaries of technical reports, Volume XV
The research results described in the following summaries were submitted by
the investigators on November 15, 1982 and cover the 6-month period from
April 1, 1982 through September 30, 1982. These reports include both work
performed under contracts administered by the Geological Survey and work by
members of the Geological Survey. The report summaries are grouped into the
four major elements of th
Authors
Muriel L. Jacobson, Thelma R. Rodriguez, Wanda H. Seiders
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: January 1983
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
John B. Townshend, J.E. Papp, E.A. Sauter, T.K. Cunningham, L.Y. Torrence
Geology report for proposed oil and gas lease sale No. 90; continental margin off the southeastern United States
This report summarizes our general knowledge of the geology and petroleum potential, as well as potential problems and hazards associated with development of petroleum resources, within the area proposed for nominations for lease sale number 90. This area includes the U.S. eastern continental margin from Raleigh Bay, just south of Cape Hatteras, to southern Florida, including the upper Continental
Authors
William P. Dillon
Proceedings of Workshop XIV: earthquake hazards of the Puget Sound region, Washington
This conference, the fourteenth in a series sponsored by the Earthquake
Hazards Reduction Program, was held October 13-15, 1980 at Lake Wilderness,
Washington. The stated purpose of the conference was to assess progress and
the state of knowledge of earthquake hazards in the Puget Sound region of
Washington. The small size of the group and the pleasant informal setting of
the Lake Wilderness Confe
Authors
Robert S. Crosson, Muriel L. Jacobson