Accession Number:

AD0784805

Title:

Investigations of Tectonic Stress

Descriptive Note:

Semi-Annual technical rept. 1 Nov 1973-30 Apr 1974

Corporate Author:

COOPERATIVE INST FOR RESEARCH IN ENVIRONMENTAL SCIENCE BOULDER CO

Report Date:

1974-04-30

Pagination or Media Count:

140.0

Abstract:

The estimation of the non-hydrostatic stress field of the earth can be achieved through the use of existing mb - Ms data for earthquakes. In this report the basis for this approach is discussed in terms of prediction of mb and Ms from theoretical relaxation source models for earthquakes inbedded in contemporary earth models. Comparisons of these predictions with observed data indicates that is the observed mb - Ms data is grouped with respect to source type and spatial tectonic aone, that basic source parameters and tectonic characteristics of the zone, particularly stress field characteristics, can be obtained. In addition, a basis of understanding of mb - Ms variations for earthquakes is established and this then provides a basis for predicting and understanding mb - Ms type discriminants for explosions and earthquakes.

Subject Categories:

  • Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE