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Ground motion characteristics during the 2011 off the Pacific Coast of Tohoku Earthquake

Authors
Journal
SOILS AND FOUNDATIONS
0038-0806
Publisher
Elsevier
Volume
52
Issue
5
Identifiers
DOI: 10.1016/j.sandf.2012.11.002
Keywords
  • The 2011 Off The Pacific Coast Of Tohoku Earthquake
  • Earthquake
  • Ground Motion
  • Peak Ground Acceleration
  • Pseudo Velocity Response Spectrum
  • Frequency Contents (Igc: A-01
  • C-00)

Abstract

Abstract The 2011 off the Pacific Coast of Tohoku Earthquake (MW9.0) caused severe damage not only because of the great tsunami, but also because of the ground motions. In the present paper, we report some details of the source mechanism and the ground motions during the earthquake, and discuss the ground motion characteristics related to the damage in the Tsukidate and Furukawa areas. Damage grades in Tsukidate, where the largest peak ground accelerations were observed, are not severe in comparison to those in Furukawa. The pseudo-velocity response spectrum for the ground motions observed in the Furukawa area is similar to that in the JR Takatori records for the 1995 Kobe earthquake.

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