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

Dapeng Zhao, Hiroo Kanamori, Hiroaki Negishi, Douglas Wiens

Research output: Contribution to journalArticlepeer-review

291 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 languageEnglish
Pages (from-to)1891-1894
Number of pages4
JournalScience
Volume274
Issue number5294
DOIs
Publication statusPublished - 1996 Dec 13
Externally publishedYes

ASJC Scopus subject areas

  • General

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