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Seafloor displacement at Kumano-nada caused by the 2004 off Kii Peninsula earthquakes, detected through repeated GPS/Acoustic surveys

Earth, Planets and Space volume 58, pages 911–915 (2006)Cite this article

Abstract

In 2004, we started monitoring crustal deformation at Kumano-nada in the Nankai trough using the GPS/Acoustic technique. We observed a large southward seafloor displacement of ∼30 cm associated with the off Kii Peninsula earthquake, which occurred in September 2004, between our two survey campaigns in August and November 2004. The observed seafloor displacement is larger than that predicted from a slip model derived solely from GPS measurements on land. This may indicate the earthquake fault is slightly shallower and extends move to the NW than previously estimated.

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Authors and Affiliations

  1. RCPEV, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, 980-8578, Japan

    Motoyuki Kido, Hiromi Fujimoto, Satoshi Miura & Yukihito Osada

  2. Natural Env. Sci., Kochi University, Akebono-cho, Kochi, 780-8520, Japan

    Kentaro Tsuka & Takao Tabei

Authors
  1. Motoyuki Kido
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  2. Hiromi Fujimoto
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  3. Satoshi Miura
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  4. Yukihito Osada
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  5. Kentaro Tsuka
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  6. Takao Tabei
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Corresponding author

Correspondence to Motoyuki Kido.

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Kido, M., Fujimoto, H., Miura, S. et al. Seafloor displacement at Kumano-nada caused by the 2004 off Kii Peninsula earthquakes, detected through repeated GPS/Acoustic surveys. Earth Planet Sp 58, 911–915 (2006). https://doi.org/10.1186/BF03351996

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  • DOI: https://doi.org/10.1186/BF03351996

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