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  • 武尾 実, 阿部 勝征, 辻 秀昭
    地震 第2輯
    1979年 32 巻 4 号 423-434
    発行日: 1979/12/25
    公開日: 2010/03/11
    ジャーナル フリー
    The source parameters of the Shizuoka earthquake (M=6.3) of July 11, 1935, are determined mainly on the basis of the close-in long-period seismograms. The epicenter and focal depth are redetermined at 35.0°N, 138.4°E and 27km. This earthquake represents a left-lateral strike-slip faulting on a plane dipping 70° toward 15°SE with a dimension of 11km(length)×6km(width). The average dislocation, rise time and stress drop are determined to be 1m, 1sec and 70 bars, respectively. The faulting at the depth of about 20km is very rare in Japan; because most of the major strike-slip events in Japan occurred near the ground surface. The theoretical ground motions expected from the above dislocation parameters are consistent with the leveling data and with the field data on the collapsed structures in the epicentral area.
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