２００４年新潟県中越地震の地表地震断層

DOI Web Site 被引用文献13件 参考文献9件

書誌事項

タイトル別名
  • Surface Earthquake Fault of the Mid Niigata Prefecture Earthquake in 2004
  • 2004ネン ニイガタケン チュウエツ ジシン ノ チヒョウ ジシン ダンソウ

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抄録

The surface faults of the Mid Niigata prefecture Earthquake in 2004 appeared along preexisting active fault traces (lines) of the Obirou fault, as well as the northern part of the western marginal fault of the Muikamachi basin. The vertical displacement of surface faults are within 30 cm, and the three areas with distinct faults can be summarized as follows. At Obirou, in Hirokami village (Uonuma city), the road surface is vertically displaced by approximately 30 cm just along the active fault line, and the waterways located on the fault line are compressed and broken. At Shitakura, in the Horinouchi town (Uonuma city), the surfaces of both the highway and the old road are cracked and vertically displaced by approximately 20 cm. At Aoshima, in Koide town (Uonuma city), the surface faults clearly extend over 500 m in length. Paddy fields, gardens, waterways, roads, and houses are vertically displaced by approximately 20 cm. The facts mentioned above indicate that the Mid Niigata prefecture Earthquake in 2004 (probably the main shock) was caused by the rejuvenation of these active faults.

収録刊行物

  • 地学雑誌

    地学雑誌 113 (6), 861-870, 2004

    公益社団法人 東京地学協会

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