An efficient algorithm for routine joint hypocentre determination

Details An efficient algorithm for routine joint hypocentre determination An efficient algorithm for routine joint hypocentre determination

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pepi...30..135s&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 30, Issue 2-3, p. 135-144.

Physics

9

Scientific paper

This paper consists of two parts. In the first part, a method is presented for performing joint hypocentre determinations based on Householder's QR decomposition algorithm, which would permit routine joint determination with a modest additional requirement in computer storage and processor time over standard single-event determination.
Second, a comparison is made between the joint method and various single-event methods in the case of subcrustal events in the Banda Sea region. The station terms which follow from the joint determination reveal the presence of travel-time anomalies, consistent with a high-seismic-velocity subducting plate, much more clearly than do the ISC residuals. However, the clearest advantage of the joint method over other methods is the more realistic assessment of likely errors in the hypocentre, since the joint method allows for interactions between errors in the hypocentres and errors in the travel-time model.

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