Earthquake, Geology, and Tsunami

Hiroshi Kawase, Shinchi Matsushima, Baoyintu, Masato Motosaka, Susumu Ohno, Hidekazu Watanabe, Reiji Tanaka, Hitoshi Tanaka, Junji Ogawa, Ryota Yamaya, Yukihiro Take

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

On March 11, 2011, a huge subduction zone earthquake occurred offshore of the Tohoku district, Japan, and created devastating damage, primarily due to the very high tsunami tide along the Pacific Coast. We first review several source studies and then summarize basic characteristics of observed strong motions with reference to the attenuation relationships, response spectra, linear site factors in the region, and nonlinearity. Fortunately we haven't seen heavy damage concentration even in the areas with high Peak Ground Accelerations, because Peak Ground Velocities were not high enough to make buildings heavily damaged or collapsed. The locally deployed network data as well as observed building responses are briefly summarized. Topographic maps and geological maps of Tohoku district and Kanto district will be shown. Finally, statistics of inundation survey, water level time -histories, and examples of damage for tsunami in Tohoku district will be presented.

Original languageEnglish
Title of host publicationPreliminary Reconnaissance Report of the 2011 Tohoku-Chiho Taiheiyo-Oki Earthqake
Pages29-113
Number of pages85
DOIs
Publication statusPublished - 2012 Dec 1

Publication series

NameGeotechnical, Geological and Earthquake Engineering
Volume23
ISSN (Print)1573-6059
ISSN (Electronic)1872-4671

Keywords

  • Building response
  • Damage potential
  • Inundation
  • Source process
  • Taro-Cho

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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