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Spatial distribution of static stress drops for aftershocks of the 2005 West Off Fukuoka Prefecture earthquake

Earth, Planets and Space volume 58, pages 1611–1615 (2006)Cite this article

Abstract

We investigated the spatial distribution of static stress drops of the aftershocks of the 2005 West Off Fukuoka Prefecture earthquake, with the aim of assessing the possibility that another earthquake will occur on the SE extension of the earthquake fault. The waveforms from six temporary online telemetry stations installed in and around the aftershock region were measured. Small stress drops were estimated for the aftershocks that occurred relatively distant from the SE and NE ends of the earthquake fault. Conversely, the aftershocks that occurred around the SE end of aftershock region are characterized by large stress drops. These results imply the possibility of a stress concentration at the SE edge of the main shock fault.

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Authors and Affiliations

  1. Research Center for Earthquake Prediction, Disaster Prevention Research Institute, Kyoto University, Gokasho Uji, 611-0011, Japan

    Yoshihisa Iio, Hiroshi Katao, Tomotake Ueno, Bogdan Enescu & Norio Hirano

  2. Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Miyagi, 980-8578, Japan

    Tomomi Okada & Naoki Uchida

  3. Institute of Seismology and Volcanology, Faculty of Sciences, Kyushu University, Shin’yama, Shimabara, Nagasaki, 855-0843, Japan

    Satoshi Matsumoto, Takeshi Matsushima, Kenji Uehira & Hiroshi Shimizu

Authors
  1. Yoshihisa Iio
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  2. Hiroshi Katao
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  3. Tomotake Ueno
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  4. Bogdan Enescu
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  5. Norio Hirano
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  6. Tomomi Okada
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  7. Naoki Uchida
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  8. Satoshi Matsumoto
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  9. Takeshi Matsushima
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  10. Kenji Uehira
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  11. Hiroshi Shimizu
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Corresponding author

Correspondence to Yoshihisa Iio.

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Iio, Y., Katao, H., Ueno, T. et al. Spatial distribution of static stress drops for aftershocks of the 2005 West Off Fukuoka Prefecture earthquake. Earth Planet Sp 58, 1611–1615 (2006). https://doi.org/10.1186/BF03352670

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  • DOI: https://doi.org/10.1186/BF03352670

Key words

  • Stress drop
  • aftershock
  • site effect
  • intraplate earthquake
  • anelastic attenuation
  • stress