Relationship between hypocentral distribution and geological structure in the Horonobe area, Northern Hokkaido, Japan

Tetsuya Tokiwa, Koichi Asamori, Naoto Hiraga, Osamu Yamada, Hirokazu Moriya, Hikaru Hotta, Itaru Kitamura, Hideharu Yokota

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, we discuss the relationship between the accurate hypocentral distribution and three-dimensional (3-D) geological structure in and around the Horonobe area in northern Hokkaido, Japan. The multiplet-clustering analysis was applied to the 421 micro-earthquakes which occurred from 1 September, 2003 to 30 September, 2007. The 3-D geological structure model was mainly constructed from previous seismic reflection profiles and borehole data. As a result of this analysis, although with slight differences in depth between them, the hypocenters were found to be distributed in the NNW-SSE direction and become deeper from the west toward the east. The distributed pattern of the hypocenters is similar to that of the geological structure. These results indicate that the hypocentral distribution may represent existence of active zone related to the geological structure, and provide effective information which can contribute to establishing methods for estimating the future evolution of the geological environment.

Original languageEnglish
Title of host publicationASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, ICEM2010
Pages117-122
Number of pages6
DOIs
Publication statusPublished - 2010 Dec 1
EventASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, ICEM2010 - Tsukuba, Japan
Duration: 2010 Oct 32010 Oct 7

Publication series

NameProceedings of the International Conference on Radioactive Waste Management and Environmental Remediation, ICEM
Volume2

Other

OtherASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, ICEM2010
CountryJapan
CityTsukuba
Period10/10/310/10/7

Keywords

  • 3-D geological structure
  • Horonobe
  • Hypocenter
  • Multiplet-clustering analysis
  • Seismic

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Energy Engineering and Power Technology
  • Waste Management and Disposal

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  • Cite this

    Tokiwa, T., Asamori, K., Hiraga, N., Yamada, O., Moriya, H., Hotta, H., Kitamura, I., & Yokota, H. (2010). Relationship between hypocentral distribution and geological structure in the Horonobe area, Northern Hokkaido, Japan. In ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, ICEM2010 (pp. 117-122). (Proceedings of the International Conference on Radioactive Waste Management and Environmental Remediation, ICEM; Vol. 2). https://doi.org/10.1115/ICEM2010-40054