Determination of the fault plane using a single near-field seismic station with a finite-dimension source model |
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| Authors: | D Legrand & B Delouis |
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| Institution: | Earthquake Research Institute, University of Tokyo, 1–1-1 Yayoi, Bunkyo-ku, Tokyo;113, Japan. E-mail: -tokyo.ac.jp, Maison Franco Japonaise, 3–9-25 Ebisu, Shibuya-ku Tokyo;150–0013, Japan. E-mail: , ETH, Institut fur Geophysik, Honggerberg, CH-8093, Zurich, Switzerland. E-mail: |
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| Abstract: | 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, M s = 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. |
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| Keywords: | earthquake source mechanism Erzincan earthquake fault plane solutions seismograms strong ground motion waveform analysis |
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