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Determination of the fault plane using a single near-field seismic station with a finite-dimension source model

Legrand, D. ; Delouis, B.

In: Geophysical Journal International, 1999, vol. 138, no. 3, p. 801-808

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    Titre
    • Determination of the fault plane using a single near-field seismic station with a finite-dimension source model
    Auteur
    • Legrand, D.. Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113, Japan. E-mail: denis@rerere.eri.u-tokyo.ac.jp
    • Delouis, B.. ETH, Institut fur Geophysik, Honggerberg, CH-8093, Zurich, Switzerland. E-mail: bertrand@seismo.ifg.ethz.ch
    Type de document
    • Postprint
    Identifiant OAI-PMH
    • oai:doc.rero.ch:303700
    Summary
    We explore the possibility of determining the actual fault plane of an earthquake from the inversion of near-source displacement seismograms of one station when a finite-dimension source is used instead of a point source model and when the complete displacement is taken into account, including near-field waves. Tests on synthetic seismograms and real data recorded at local distances show that this is possible even with a single, three-component station. A single accelerogram available for the Erzincan, Turkey, 1992 March 13, Ms= 6.8 earthquake is inverted and the solution found is compatible with other seismological studies and with the mechanism expected for the North Anatolian Fault