Tomography of the source area of the 1995 Kobe earthquake: Evidence for fluids at the hypocenter?

Dapeng Zhao; Hiroo Kanamori; Hiroaki Negishi; Douglas Wiens

doi:10.1126/science.274.5294.1891

Tomography of the source area of the 1995 Kobe earthquake: Evidence for fluids at the hypocenter?

Dapeng Zhao, Hiroo Kanamori, Hiroaki Negishi, Douglas Wiens

SCI - Research Center for Prediction of Earthquakes and Volcanic Eruptions (RCPEVE)

Research output: Contribution to journal › Article › peer-review

332 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1891-1894
Number of pages	4
Journal	Science
Volume	274
Issue number	5294
DOIs	https://doi.org/10.1126/science.274.5294.1891
Publication status	Published - 1996 Dec 13

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title = "Tomography of the source area of the 1995 Kobe earthquake: Evidence for fluids at the hypocenter?",

abstract = "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.",

author = "Dapeng Zhao and Hiroo Kanamori and Hiroaki Negishi and Douglas Wiens",

year = "1996",

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AU - Negishi, Hiroaki

AU - Wiens, Douglas

PY - 1996/12/13

Y1 - 1996/12/13

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AB - 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.

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Tomography of the source area of the 1995 Kobe earthquake: Evidence for fluids at the hypocenter?

Abstract

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