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Influences of subsurface geological structure neighboring geological repository on earthquake motion of the site

Published online by Cambridge University Press:  15 February 2011

Taishi Oouchi ,
Hiroyuki Tsuchi ,
Tetsuya Ota ,
Koji Hane  and
Toru Sasaki
Taishi Oouchi
Affiliation:
Nuclear Waste Management Organization of Japan (NUMO), Mita NN Bldg. 1-23, Shiba 4-Chome, Minatoku, Tokyo, Japan
Hiroyuki Tsuchi
Affiliation:
Nuclear Waste Management Organization of Japan (NUMO), Mita NN Bldg. 1-23, Shiba 4-Chome, Minatoku, Tokyo, Japan
Tetsuya Ota
Affiliation:
Kajima Corporation, 6-5-11, Akasaka, Minato-ku, Tokyo, Japan
Koji Hane
Affiliation:
Kajima Corporation, 6-5-11, Akasaka, Minato-ku, Tokyo, Japan
Toru Sasaki
Affiliation:
Kajima Corporation, 6-5-11, Akasaka, Minato-ku, Tokyo, Japan
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Abstract

According to recent seismic observation records, there are some cases where unexpectedly large seismic motion was observed deep underground and that was larger than at the surface. The factors influencing such phenomena are assumed to be deep geological structures with topographic irregularity, velocity structure and non-linearity of subsurface layers. These factors should be taken into account in the earthquake-resistant design of a geological repository. The influence of a deep underground geological structure with topographic irregularity on ground motion has been studied and it has been confirmed that such a structure have a significant impact on ground motion and the constructive interference of waves may result in strong earthquake ground motion in the vicinity of a structural boundary deep underground.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1193: Scientific Basis for Nuclear Waste Management XXXIII , 2009 , 193
Copyright
Copyright © Materials Research Society 2009

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