- Open Access
Postseismic deformation following the 2005 West Off Fukuoka Prefecture Earthquake (M7.0) derived by GPS observation
Earth, Planets and Space volume 58, pages 1617–1620 (2006)
We constructed a temporary GPS network around the aftershock area of the 2005 West Off Fukuoka Prefecture Earthquake (M7.0) in order to investigate the characteristics of its postseismic deformation. Our GPS network data, as well as the GEONET data, were analyzed using Bernese GPS software. We detected notable postseismic deformation in horizontal components close to the fault plane. The observed maximum displacement was 5.6 cm at the GNKI site on Genkaijima Island. A logarithmic law was adapted to the coordinate time series data, revealing decay times from 2 to 23 days, similar to those obtained for the 2003 Tokachi-oki Earthquake (M8.0). The amount of postseismic slips on the fault was assessed using the coseismic fault model proposed by the Geographical Survey Institute (GSI). We derived an optimum fault model of postseismic slip on the shallow (less than 3 km depth) portion of the fault. Our findings indicate that postseismic slip occurred only in shallow parts of the coseismic fault.
Altamimi, Z., P. Sillard, and C. Boucher, ITRF2000: A new release of International Terrestrial Reference Frame for earth science applications, J. Geophys. Res., 107, doi:10.1029/2001JB000561, 2002.
Donnellan, A. and G. A. Lyzenga, GPS observations of fault afterslip and upper crustal deformation following the Nothridge earthquake, J. Geophys. Res., 103, 21285–21297, 1998.
Geographical Survey Institute, The fault model of the West Off Fukuoka Prefecture Earthquake, http://www.jishin.go.jp/main/chousa/05mar_fukuoka/p17.gif, 2005.
Hashimoto, M., T. Tabei, T. Sagiya, and T. Ito, A model for the postseismic deformation following the 2000 western Tottori Earthquake (Revised), Abstract Seism. Soc. Jpn., C099, 2003.
Heki, K., S. Miyazaki, and H. Tsuji, Silent fault slip following an interplate thrust earthquake at the Japan Trench, Nature, 386, 595–598, 1997.
Hugentobler, U., R. Dach, and P. Fredez, Bernese GPS Software Version 5.0, AIUB, 392 pp., 2005.
Kato, T., G. S. EL-Fiky, and E. N. Oware, Crustal strains in the Japanese islands as deduced from dense GPS array, Geophys. Res. Lett., 25, 3445–3448, 1998.
Marone, C. J., C. H. Scholtz, and R. Bilham, On the mechanics of earthquake afterslip, J. Geophys. Res., 96, 8441–8452, 1
Matsushima, T., H. Takahashi, T. Kato, A. Takeuchi, T. Yamaguchi, Y. Kohno, J. Fukuda, K. Hatamoto, R. Doke, Y. Matsu’ura, and M. Kasahara, Postseismic deformation of the 2004 Niigata-Chuetsu earthquake (M6.8) by a dense GPS observation, Abstracts 2005 Japan Earth and Planetary Science Joint Meeting, S101–P012, 2005.
Nakano, T. and K. Hirahara, GPS observations of postseismic deformation for the 1995 Hyogo-ken Nanbu earthquake, Japan, Geophys. Res. Lett., 24, 503–506, 1997.
Nishimura, T., S. Fujiwara, M. Murakami, H. Suito, M. Tobita, and H. Yarai, Fault model of the 2005 Fukuoka-ken Seiho-oki earthquake estimated from coseismic deformation observed by GPS and InSAR, Earth Planets Space, 58, 51–56, 2006.
Okada, Y, Internal deformation due to shear and tensile faults in a half-space, Bull. Seismol. Soc. Am., 82, 1018–1040, 1992.
The Research Group for Active Faults of Japan, Active Faults in Japan, revised edition, University of Tokyo Press, 437 pp., 1991.
Takahashi, H., S. Nakao, N. Okazaki, J. Koyama, T. Sagiya, T. Ito, F. Ohya, K. Sato, Y. Fujita, M. Hashimoto, Y. Hoso, T. Kato, T. Iinuma, J. Fukuda, T. Matsushima, Y. Kohno, and M. Kasahara, GPS observation of the first month of postseismic crustal deformation associated with the 2003 Tokachi-oki earthquake (MJMA 8.0), off southeastern Hokkaido, Japan, Earth Planets Space, 56, 377–382, 2004.
Takahashi, H., T. Matsushima, T. Kato, A. Takeuchi, T. Tamaguchi, Y. Kohno, T. Katagi, J. Fukuda, K. Hatamoto, R. Doke, Y. Matsu’ura, and M. Kasahara, A dense GPS observation immediately after the 2004 mid-Niigata prefecture earthquake, Earth Planets Space, 57, 661–665, 2005.
Uehira, K., T. Yamada, M. Shinohara, K. Nakahigashi, H. Miyamachi, Y. Iio, T. Okada, H. Takahashi, N. Matsuwo, K. Uchida, T. Kanazawa, and H. Shimizu, Precise aftershock distribution of the 2005 West Off Fukuoka Prefecture Earthquake (Mj=7.0) using a dense onshore and offshore seismic network, Earth Planets Space, 58, this issue, 1605–1610, 2006.
Wessel, P. and W. H. F. Smith, New Version of the Generic Mapping Tools Released, EOS Trans. AGU, 76, 329, 1995.
About this article
Cite this article
Nakao, S., Takahashi, H., Matsushima, T. et al. Postseismic deformation following the 2005 West Off Fukuoka Prefecture Earthquake (M7.0) derived by GPS observation. Earth Planet Sp 58, 1617–1620 (2006). https://doi.org/10.1186/BF03352671
- Postseismic deformation
- Postseismic slip
- 2005 West Off Fukuoka Prefecture Earthquake