Imaging P-wave scatterer distribution in the focal area of the 1995 M7.2 Hyogo-ken Nanbu (Kobe) Earthquake

Satoshi Matsumoto, Kazushige Obara, Akira Hasegawa

研究成果: ジャーナルへの寄稿学術誌査読

19 被引用数 (Scopus)

抄録

Spatial distribution of P-wave scatterers in and around the focal area of the 1995 Hyogo-ken Nahbu Earthquake (M7.2) has been estimated by using dense seismic array data. Waveforms of 12 explosions were analyzed in a frequency band of 6-10Hz range. It is difficult to estimate the inhomogeneous structure in this wavelength range from the ordinary travel time tomography, in spite of its importance for understanding earthquake-generating process. Observed waveforms were slant stacked into various directions from the array and then AGC and diffraction curve summation are applied in order to image scatterer distribution. Spatial distribution of scattering strength thus imaged shows that higher strengths are distributed beneath the hypocenter, the initiation point of the mainshock rupture, and in the southwestern part of the fault plane of the event.

本文言語英語
ページ(範囲)1439-1442
ページ数4
ジャーナルGeophysical Research Letters
25
9
DOI
出版ステータス出版済み - 5月 1 1998
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地球惑星科学(全般)

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