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Volume 58 Supplement 1

Special Issue: Special Section for the 2005 West Off Fukuoka Prefecture Earthquake (1)

Fault model of the 2005 Fukuoka-ken Seiho-oki earthquake estimated from coseismic deformation observed by GPS and InSAR

Earth, Planets and Space volume 58, pages 51–56 (2006)Cite this article

Abstract

On 20 March 2005, the Fukuoka-ken Seiho-oki (the 2005 West off Fukuoka Prefecture) earthquake (MJMA7.0) occurred in northern Kyushu, western Japan. We used coseismic deformation observed by GPS and InSAR to construct a fault model. The uniform slip model of rectangular dislocation in an elastic half-space suggests ∼1.4 m of left-lateral strike slip faulting on a near-vertical fault. The fault strike is 298 degrees and its southeastern edge was strongly constrained by the displacement at a permanent GPS station located on Shikanoshima, which is consistent with the aftershock distribution. We estimated slip distribution on a planar fault and found the maximum slip of ∼1.9 m near the surface. Large slip is concentrated at depths of 0 to 10 km in an along-strike range from the hypocenter to 10 km east-southeast of it.

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Authors and Affiliations

  1. Geographical Survey Institute, Japan

    Takuya Nishimura, Satoshi Fujiwara, Makoto Murakami, Hisashi Suito, Mikio Tobita & Hiroshi Yarai

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  1. Takuya Nishimura
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  2. Satoshi Fujiwara
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  3. Makoto Murakami
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  4. Hisashi Suito
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  5. Mikio Tobita
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  6. Hiroshi Yarai
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Correspondence to Takuya Nishimura.

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Nishimura, T., Fujiwara, S., Murakami, M. et al. Fault model of the 2005 Fukuoka-ken Seiho-oki earthquake estimated from coseismic deformation observed by GPS and InSAR. Earth Planet Sp 58, 51–56 (2006). https://doi.org/10.1186/BF03351913

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  • DOI: https://doi.org/10.1186/BF03351913

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