Publications
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Altitude-age relationships of the lunar maria Altitude-age relationships of the lunar maria
Altitudes and relative ages of mare surface units were compared to test if a systematic correlation in height of lava eruption surfaces and age might reflect a corresponding increase in depth of the magma chamber with time; in addition the altitudes were studied to shed light on the time and place of warping of mare surfaces. The laser altimeter data from the Apollo missions and relative...
Authors
Baerbel K. Lucchitta, J. M. Boyce
Results of a reconnaissance microearthquake survey of Bucaramanga, Colombia Results of a reconnaissance microearthquake survey of Bucaramanga, Colombia
Six University of Wisconsin portable, continuously‐recording seismographs were operated for 3½ days in late 1976 in the Eastern Cordillera of Colombia in a 200‐km‐diameter array around Bucaramanga, where there are also three permanent stations of the Instituto Geofísico de Los Andes Colombianos. Twenty‐seven microearthquakes were recorded. Most can be well located. Only one event...
Authors
W.D. Pennington, Walter D. Mooney, Rene van Hissenhoven, H. Meyer, J.E. Ramirez, Robert P. Meyer
Reply to discussion by Michael A. Collins, "Fresh ground water stored in aquifers under the continental shelf: implications from a deep test, Nantucket Island, Massachusetts" Reply to discussion by Michael A. Collins, "Fresh ground water stored in aquifers under the continental shelf: implications from a deep test, Nantucket Island, Massachusetts"
We appreciate the comments made in the discussion by Michael A. Collins, regarding our paper about the anomalously low salinity of water underlying Nantucket Island. However, we feel that in his effort to justify the mathematical approach for solving salt water intrusion problems, he has overlooked several of the major points in this paper. We will try to amplify these points to
Authors
F. A. Kohout, D.F. Delaney
Collecting biologic and geologic specimens in south Florida Collecting biologic and geologic specimens in south Florida
No abstract available.
Authors
Eugene A. Shinn
Landslides in Valles Marineris, Mars Landslides in Valles Marineris, Mars
Large landslides in the Martian equatorial troughs have been investigated with respect to morphology, geologic structure of the troughs, time of emplacement, similarity to terrestrial landslides, and origin and mechanism of transport. Viking Orbiter images provided a base for morphologic analyses, mapping, crater counts, and volumetric considerations. Results showed that the morphologic...
Authors
Baerbel K. Lucchitta
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: December 1979 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: December 1979
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, E.A. Sauter, S.P. Tilton
Landslides and related features, Pennsylvania - Pittsburgh 1° x 2° sheet Landslides and related features, Pennsylvania - Pittsburgh 1° x 2° sheet
No abstract available.
Authors
John S. Pomeroy, William E. Davies
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1979 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: May 1979
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, E.A. Sauter, S.P. Tilton
Annotated bibliography of landslides in the Circumpacific region exclusive of the Soviet Union and the United States Annotated bibliography of landslides in the Circumpacific region exclusive of the Soviet Union and the United States
No abstract available.
Authors
Fred A. Taylor, Earl E. Brabb
By
Geology, Energy, and Minerals Mission Area, Natural Hazards Mission Area, Energy Resources Program, Landslide Hazards Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geologic Hazards Science Center, Geology, Minerals, Energy, and Geophysics Science Center
Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: October 1979 Preliminary geomagnetic data, College Observatory, Fairbanks, Alaska: October 1979
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, E.A. Sauter, S.P. Tilton
Landslides and related features, Kentucky; Winchester 1 ° x 2 ° sheet Landslides and related features, Kentucky; Winchester 1 ° x 2 ° sheet
No abstract available.
Authors
Alfred R. Taylor
A single-degree-of-freedom model for non-linear soil amplification A single-degree-of-freedom model for non-linear soil amplification
For proper understanding of soil behavior during earthquakes and assessment of a realistic surface motion, studies of the large-strain dynamic response of non-linear hysteretic soil systems are indispensable. Most of the presently available studies are based on the assumption that the response of a soil deposit is mainly due to the upward propagation of horizontally polarized shear waves...
Authors
Mustafa Ozder Erdik