SURFACE DISPLACEMENT INDUCED BY LIQUEFACTION OF THE 2011 TOHOKU-OKI EARTHQUAKE IN TOKYO BAY AREA USING INSAR ANALYSIS

• 石塚 師也

  京都大学大学院 工学研究科

• 辻 健

  京都大学大学院 工学研究科都市社会工学専攻

• 松岡 俊文

  京都大学大学院 工学研究科都市社会工学専攻

• 水野 敏実

  応用地質株式会社 技術開発室

Bibliographic Information

Other Title

• 干渉SAR解析を用いた2011年東北地方太平洋沖地震で発生した東京湾臨海域の液状化に伴う広域地表変動量の推定

Abstract

 On March 11th 2011, the Tohoku-Oki earthquake (Mw9.0) was generated along the Japan Trench and triggered a lot of aftershocks. The extent of damage caused by these earthquakes were enormous. One of the damages caused by this earthquake is land subsidence induced by soil liquefaction. Here, we focus on the soil liquefaction at waterfront area along Tokyo bay. In this study area, it was reported that sand boiling as well as soil liquefaction was widely found especially in the artificially filled ground. However it is difficult to reveal quantitative degree of the surface deformation associated with soil liquefaction only using ground-based observation system. Therefore, the goal of this study is to estimate surface deformation induced by the soil liquefaction in this area using Differential Interferometric SAR(DInSAR) analysis. In the result, we succeeded in estimating distribution of the surface deformation associated with liquefaction at the waterfront area and found that surface deformation is not uniformly occurred in the artificially filled ground.

Journal

• Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering)

  Journal of Japan Society of Civil Engineers, Ser. C (Geosphere Engineering) 68 (1), 175-182, 2012

  Japan Society of Civil Engineers

Keywords

• liquefaction
• 2011 Tohoku-oki earthquake
• InSAR analysis
• artificially filled ground

Details

• CRID: 1390001205356242432
• NII Article ID: 20001149933
• NII Article ID: 130004559375
• DOI: 10.2208/jscejge.68.175
• BIBCODE: 2012JSCGE..68..175I
• ISSN: 21856516
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed