Natural Hazards

Publications

Filter Total Items: 6,123
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Year Published: 1980

Evolution of the continental margin of southern Spain and the Alboran Sea

Seismic reflection profiles and magnetic intensity measurements were collected across the southern continental margin of Spain and the Alboran basin between Spain and Africa. Correlation of the distinct seismic stratigraphy observed in the profiles to stratigraphic information obtained from cores at Deep Sea Drilling Project site 121 allows...

Dillon, William P.; Robb, James M.; Greene, H. Gary; Lucena, Juan Carlos
Evolution of the continental margin of southern Spain and the Alboran Sea; 1980; Article; Journal; Marine Geology; Dillon, W. P.; Robb, J. M.; Greene, H. G.; Lucena, J. C.

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Year Published: 1980

Influence of San Gabriel submarine canyon on narrow-shelf sediment dynamics, southern California

Variations in the concentration of total suspended particulate matter (TSM) collected 1 m above bottom, changes in vertical profiles of light transmission, and substrate textural patterns reveal a corridor for preferential sediment transport on San Pedro continental shelf, California. During the winter, this corridor, designated the preferential...

Karl, Herman A.
Influence of San Gabriel submarine canyon on narrow-shelf sediment dynamics, southern California; 1980; Article; Journal; Marine Geology; Karl, H. A.

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Year Published: 1980

Speculations on processes responsible for mesoscale current lineations on the continental shelf, southern California

A side-scan sonar survey of San Pedro shelf, California, reveals areas of mesoscale current lineations oriented approximately north-northeast in water depths of 20-25 m. Widths of sand ribbons range from 40 to 120 m and intervening erosional furrows, from 15 to 50 m. A conceptual model shows that the scale and orientation of current lineations...

Karl, Herman A.
Speculations on processes responsible for mesoscale current lineations on the continental shelf, southern California; 1980; Article; Journal; Marine Geology; Karl, H. A.

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Year Published: 1979

Atlas of Mars: the 1:5,000,000 map series

This atlas comprises small-scale maps and photomosaics covering the entire surface of the planet Mars. The cartographic contents are reduced-scale versions of the 1:5,000,000 topographic series of 30 quadrangles compiled by the U.S. Geological Survey in cooperation with the National Aeronautics and Space Administration (NASA).

Batson, R.M.; Bridges, P.M.; Inge, J.L.
Atlas of Mars: the 1:5,000,000 map series; 1979; Federal Government Series; 438; Batson, R. M.; Bridges, P. M.; Inge, J. L.

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Year Published: 1979

Preliminary summary of the U.S. Geological Survey strong-motion records from the October 15, 1979 Imperial Valley earthquake

This report summarizes the data from near-in strong-motion accelerograph stations operated by the U.S. Geological Survey in the Imperial Valley of California at the time of the October 15, 1979 Imperial Valley earthquake. The purpose of this report is to alert others as to the nature of the strong-motion data that is available from this event. In...

Porcella, R.L.; Matthiesen, R.B.
Preliminary summary of the U.S. Geological Survey strong-motion records from the October 15, 1979 Imperial Valley earthquake; 1979; OFR; 79-1654; Porcella, R. L.; Matthiesen, R. B.

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Year Published: 1979

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...

Erdik, Mustafa Ozder
A single-degree-of-freedom model for non-linear soil amplification; 1979; OFR; 79-592; Erdik, Mustafa Ozder

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Year Published: 1979

Annotated bibliography of landslides in the Circumpacific region exclusive of the Soviet Union and the United States

Taylor, Fred A.; Brabb, Earl E.
Annotated bibliography of landslides in the Circumpacific region exclusive of the Soviet Union and the United States; 1979; OFR; 79-546; Taylor, Fred A.; Brabb, Earl E.

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Year Published: 1979

Compilation of strong-motion records from the August 6, 1979 Coyote Lake earthquake

This report represents a joint effort by the OSMS, CDMG and the U.S. Geological Survey (USGS). The report summarizes all strong-motion accelerograph records recovered from the August 6, 1979 Coyote Lake earthquake. The majority of accelerograms were recorded at stations operated by the OSMS-CDMG and USGS; the latter organization operates a network...

Porcella, R.L.; Matthiesen, R.B.; McJunkin, R.D.; Ragsdale, J.T.
Compilation of strong-motion records from the August 6, 1979 Coyote Lake earthquake; 1979; OFR; 79-385; Porcella, R. L.; Matthiesen, R. B.; McJunkin, R. D.; Ragsdale, J. T.

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Year Published: 1979

Interim report on the St. Elias, Alaska earthquake of 28 February 1979

On 28 February 1979 an earthquake with surface wave magnitude (Ms) of 7.7 (W. Person, personal communication, 1979) occurred beneath the Chugach and St. Elias mountains of southern Alaska (fig. 1). This is a region of complex tectonics resulting from northwestward convergence between the Pacific and North American plates. To the east, the...

Lahr, John C.; Plafker, George; Stephens, C.D.; Foglean, K.A.; Blackford, M.E.
Interim report on the St. Elias, Alaska earthquake of 28 February 1979; 1979; OFR; 79-670; Lahr, John C.; Plafker, George; Stephens, C. D.; Foglean, K. A.; Blackford, M. E.

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Year Published: 1979

Landslides and related features, Alabama, Georgia, and Tennessee; Rome 1 degree by 2 degree sheet

Thomas, Roger E.
Landslides and related features, Alabama, Georgia, and Tennessee; Rome 1 degree by 2 degree sheet; 1979; OFR; 79-944; Thomas, Roger E.

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Year Published: 1979

Landslides and related features, Kentucky and Virginia; southern half of Jenkins 1? by 2? sheet

Outerbridge, William F.; Thomas, Roger E.
Landslides and related features, Kentucky and Virginia; southern half of Jenkins 1? by 2? sheet; 1979; OFR; 79-714; Outerbridge, William F.; Thomas, Roger E.

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Year Published: 1979

Landslides and related features, Kentucky; Winchester 1 degree x 2 degrees sheet

Taylor, Alfred R.
Landslides and related features, Kentucky; Winchester 1 degree x 2 degrees sheet; 1979; OFR; 79-432; Taylor, Alfred R.