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

1964; Seismological Society of America; Volume: 54; Issue: 6A Linguagem: Inglês

10.1785/bssa05406a2037

1943-3573

Agustín Udías,

Geotechnical and Geomechanical Engineering

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.