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Stability of earthquake moment tensor inversions: effect of the double-couple constraint

Abstract:

We show that spurious large non-double-couple components can be obtained in inversions for the full deviatoric moment tensor for shallow crustal earthquakes due to inaccurate Earth models. The traditional "best double-couple" solution does not in general provide an optimal estimate of a double-couple mechanism, and is only reliable when the non-double-couple component of the full deviatoric solution is small. The inverse problem for the moment tensors of the 1998 Antarctic Plate and 2000 Whar...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Role:
Author
Volume:
356
Issue:
1-3
Pages:
115-124
Publication date:
2002-10-07
DOI:
ISSN:
0040-1951
URN:
uuid:06118d07-0aa4-4d40-85e2-9b1a0549695e
Source identifiers:
82405
Local pid:
pubs:82405

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