Gravity and the earthquake mechanism

N. J. Vlaar; M. J.R. Wortel

doi:10.1016/0031-9201(78)90017-1

Gravity and the earthquake mechanism

N. J. Vlaar^*
, M. J.R. Wortel

^*Corresponding author for this work

DES - Tectonophysics group

Utrecht University

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Earthquake sources exhibiting anelastic volume changes are studied in a gravitating earth. The excitation of seismic displacement fields by such sources cannot be fully described by a moment tensor. The effect of gravity manifests itself through the action of a buoyancy force at the source, which is compensated by a continuous distribution of volume forces through the earth. An inversion scheme which does not take into account these gravitational forces may lead to a pseudo-precursive action in the source and to an erroneous source characterisation.

Original language	English
Pages (from-to)	240-246
Number of pages	7
Journal	Physics of the Earth and Planetary Interiors
Volume	16
Issue number	3
DOIs	https://doi.org/10.1016/0031-9201(78)90017-1
Publication status	Published - Apr 1978

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10.1016/0031-9201(78)90017-1

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title = "Gravity and the earthquake mechanism",

abstract = "Earthquake sources exhibiting anelastic volume changes are studied in a gravitating earth. The excitation of seismic displacement fields by such sources cannot be fully described by a moment tensor. The effect of gravity manifests itself through the action of a buoyancy force at the source, which is compensated by a continuous distribution of volume forces through the earth. An inversion scheme which does not take into account these gravitational forces may lead to a pseudo-precursive action in the source and to an erroneous source characterisation.",

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AU - Wortel, M. J.R.

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AB - Earthquake sources exhibiting anelastic volume changes are studied in a gravitating earth. The excitation of seismic displacement fields by such sources cannot be fully described by a moment tensor. The effect of gravity manifests itself through the action of a buoyancy force at the source, which is compensated by a continuous distribution of volume forces through the earth. An inversion scheme which does not take into account these gravitational forces may lead to a pseudo-precursive action in the source and to an erroneous source characterisation.

UR - https://www.scopus.com/pages/publications/49349123741

U2 - 10.1016/0031-9201(78)90017-1

DO - 10.1016/0031-9201(78)90017-1

M3 - Article

AN - SCOPUS:49349123741

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VL - 16

SP - 240

EP - 246

JO - Physics of the Earth and Planetary Interiors

JF - Physics of the Earth and Planetary Interiors

IS - 3

ER -

Gravity and the earthquake mechanism

Abstract

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