1995年新潟県北部の地震について

書誌事項

タイトル別名
  • 1995 Northern Niigata Earthquake of M6.0.
  • 1995ネン ニイガタケン ホクブ ノ ジシン ニ ツイテ

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抄録

A destructive earthquake of magnitude 6 on the Richter scale occurred 18km east of Niigata in the flat paddy fields of the Niigata Plain on April 1, 1995. The epicenter was so shallow, at a depth of 10km, that 55 houses completely collapsed and 165 partially collapsed, but no one died. The distribution of seismic itensity was analyzed by the moment calculated for overturned prismatic gravestones. Vertical acceleration at the epicenter was calculated to be larger than the acceleration of gravity. A rating of intensity 6 on the scale of the Japan Meteorological Agency was recorded in an area of 5.2×1km trending NNE-SSW, which may indicate the distribution of the buried ruptured fault beneath the plain. This destructive earthquake occurred at the eastern margin of the seismic gap, in an area which might spawn a strong destructive earthquake soon, as indicated by Mogi (1988), Ishikawa (1990, 1994) and Ohtake (1994). Special measures for the prevention of earthquake disaster should be established in the Niigata area, soon.

収録刊行物

  • 第四紀研究

    第四紀研究 35 (3), 153-163, 1996

    日本第四紀学会

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