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Stress relaxation in a semi-infinite viscoelastic earth model

COMMITTEE ON EXPERIMENTAL GEOLOGY AND GEOPHYSICS HARVARD UNIVERSITY, CAMBRIDGE, MASSACHUSETTS 02138
DEPARTMENT OF EARTH AND PLANETARY SCIENCES MASSACHUSETTS INSTITUTE OF TECHNOLOGY, CAMBRIDGE, MASSACHUSETTS 02139

Abstract

Expressions for quasi-static surface stresses resulting from a finite, rectangular, vertical, strike-slip fault in a Maxwellian viscoelastic half-space are derived. Variation of the stresses with time and epicentral distance is studied. Contour maps are obtained in some representative cases. It is found that all nonvanishing stress components at the free surface die exponentially with time. This is in contrast to the behavior of the displacements and strains which, in general, do not vanish for large times.

Footnotes

^* On leave from the Department of Mathematics, Kurukshetra University, Kurukshetra, India.