Liquefaction and their Site Conditions in Tohoku Region during the 2011 Off the Pacific Coast of Tohoku Earthquake

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Bibliographic Information

Other Title
  • 2011 年東北地方太平洋沖地震による東北地方の液状化発生と土地条件

Abstract

This paper summarizes liquefaction-induced damage in the Tohoku region during the Mw 9.0 destructive earthquake that occurred March 11, 2011, focusing on land and geomorphologic conditions of affected areas.Based on this study the following conclusions were reached: liquefaction was observed at a total of 63 cities, towns and villages in all six prefectures in Tohoku regions, whose numbers of 7.5-arc-second grid cells are 561; most of the liquefaction occurred in the areas where the instrumental seismic intensity exceeded 5.0; liquefaction caused damage to road, levees and residential houses, the lifelines as well as farmlands; liquefaction took placed in paddy field and mulberry plantation along the meandering rivers and valleys between terraces and hills during the Meiji and Taisho eras; and liquefaction occurrence rate for each geomorphologic unit within the areas of the instrumental seismic intensity exceeded 5.0 is the highest for natural levee (6.6%) among 22 geomorphologic classification units; the rate for reclaimed land and filled land is fairly low, which correspond to less than 1%, respectively.

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Details 詳細情報について

  • CRID
    1390001205358193280
  • NII Article ID
    130004962752
  • DOI
    10.5610/jaee.14.2_124
  • ISSN
    18846246
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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