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A least squares method for earthquake mechanism determination using S-wave data

INSTITUTE OF TECHNOLOGY SAINT LOUIS UNIVERSITY

Abstract

In this paper a numerical approach to the determination of focal mechanisms based on the observation of the polarization of the S wave at N stations is presented. Least-square methods are developed for the determination of the orientation of the single and double couple sources. The methods allow a statistical evaluation of the data and of the accuracy of the solutions.

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