Tomography of the Source Area of the 1995 Kobe Earthquake: Evidence for Fluids at the Hypocenter?
Seismic tomography revealed a low seismic velocity (-5%) and high Poisson's ratio (+6%) anomaly covering about 300 square kilometers at the hypocenter of the 17 January 1995, magnitude 7.2, Kobe earthquake in Japan. This anomaly may be due to an overpressurized, fluid-filled, fractured rock matrix that contributed to the initiation of the Kobe earthquake.
Zhao
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D. Zhao and D. Wiens, Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA. H. Kanamori, Seismological Laboratory 252-21, California Institute of Technology, Pasadena, CA 91125, USA. H. Negishi, Disaster Prevention Research Institute, Kyoto University, Uji 611, Japan.
Kanamori
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Negishi
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Wiens
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