新潟県中越地震による魚沼市(旧堀之内町)新道島,竜光地区の建物被害

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  • ニイガタケン チュウエツ ジシン ニ ヨル ウオヌマシ キュウ ホリノウチマチ シンドウジマ リュウコウ チク ノ タテモノ ヒガイ
  • Distribution of seriously damaged wooden structures in the Shindoujima and Ryuko areas of Uonuma City, by the Niigata-ken Chuetsu Earthquake in October 23, 2004

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Niigata-ken Chuetsu earthquake (M6.8) was occurred in the Chuetsu district in Niigata Prefecture at 17:56 23rd October, 2004. Damage becomes the large disaster of fatalities 46 persons, serious or slight injury person 4,791 persons, complete collapsed house 2,827, half collapsed house 12,746, partly failure house 100,453 at 18th March. Serious damages such as Kawaguchi Town and Ojiya City, which recorded seismic intensity of 7, are unevenly distributed. The localization of this damage seemed to appear by many factors such as strong motion, surface geology, structure and actual age of the houses etc. ln this study, distribution of building damage and subsurface deformation were mapped out in the western part of the Uonuma City (ex-Horinouchi Town) at the eastern part of the hypocenter. From the distribution of the completely collapsed house, the concentration of the damage of the western part of the Shin-Doujima were caused by the strong motion from the hypocenter. In the future, ground and geological structure will be examined from field investigations, seismic prospecting, etc.

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