Skip to main content

Volume 60 Supplement 11

Special Issue: Special Section for the 2007 Chuetsu-oki, Niigata, Japan, Earthquake

Postseismic slip associated with the 2007 Chuetsu-oki, Niigata, Japan, Earthquake (M 6.8 on 16 July 2007) as inferred from GPS data


Postseismic crustal deformation associated with the 2007 Chuetsu-oki Earthquake, which occurred on 16 July 2007 with a magnitude of 6.8 at the southeastern rim of the Sea of Japan, near the coast of Mid-Niigata Prefecture, Central Japan, are detected by GPS observations. We analyzed continuous GPS data from the sites of the Geographical Survey Institute of Japan (GSI) and another dense temporary network, which we established just after the main shock to reveal spatio-temporal evolution of postseismic slip for 50 days after the main shock by geodetic inversion methods. Four models of faults are configured following Ohta et al. (2008, this issue), and these are optimized based on ABIC (Akaike’s Bayesian Information Criterion). The results of the inversion analysis show that the postseismic slip on the faults occurred at a downdip and updip extension of the coseismically slipped portion. The slip in the shallower portion decayed to be negligible within 2 weeks, and the slip in the deeper portion was still large after the slip in the shallower portion had almost terminated.


  • Akaike, H., On entropy maximization principle, in Application of Statistics edited by P. R. Krishnaiah, pp. 27–41, North-Holland, Amsterdam, 1977.

    Google Scholar 

  • Akaike, H., Likelihood and the Bayes procedure, in Bayesian Statistics, edited by J. M. Bernardo, M. H. DeGroot, D. V. Lindley, and A. F. M. Smith, pp. 143–166, Univ. Press, Valencia, Spain, 1980.

    Google Scholar 

  • Hashimoto, M., H. Takahashi, R. Doke, M. Kasahara, A. Takeuchi, K. Onoue, Y. Hoso, Y. Fukushima, K. Nakamura, F. Ohya, R. Honda, M. Ichiyanagi, T. Yamaguchi, T. Maeda, and Y Hiramatsu, Postseismic displacements following the 2007 Noto peninsula earthquake detected by dense GPS observations, Earth Planets Space, 60(2), 139–144, 2008.

    Article  Google Scholar 

  • Heki, K., S. Miyazaki, and H. Tsuji, Silent fault slip following an interplate thrust earthquake at the Japan Trench, Nature, 386(6625), 595–598, 1997.

    Article  Google Scholar 

  • Iinuma, T., T. Kato, and M. Hori, Inversion of GPS velocity and seismicity data to yield changes in stress in the Japanese Islands, Geophys. J. Int., 160(2), 417–434, 2005.

    Article  Google Scholar 

  • Jonsson, S., P. Segall, R. Pedersen, and G. Bjornsson, Post-earthquake ground movements correlated to pore-pressure transients, Nature, 424(6945), 179–183, doi:10.1038/nature01776, 2003.

    Article  Google Scholar 

  • Miura, S., Y Suwa, A. Hasegawa, and T. Nishimura, The 2003 M 8.0 Tokachi-Oki earthquake—How much has the great event paid back slip debts?, Geophys. Res. Lett., 31(5), L05613, 2004.

    Article  Google Scholar 

  • Miura, S., T. Iinuma, S. Yui, N. Uchida, T. Sato, K. Tachibana, and A. Hasegawa, Co- and post-seismic slip associated with the 2005 Miyagi-oki earthquake (M7.2) as inferred from GPS data, Earth Planets Space, 58(12), 1567–1572, 2006.

    Article  Google Scholar 

  • Miyazaki, S., T. Saito, M. Sasaki, Y. Hatanaka, and Y. Iimura, Expansion of GSI’s nationwide GPS array, Bull. Geogr. Surv. Inst., 43, 23–34, 1997.

    Google Scholar 

  • Nakao, S., H. Takahashi, T. Matsushima, Y. Kohno, and M. Ichiyanagi, Postseismic deformation following the 2005 West Off Fukuoka Prefecture Earthquake (M7.0) derived by GPS observation, Earth Planets Space, 58(12), 1617–1620, 2006.

    Article  Google Scholar 

  • Ohta, Y., S. Miura, T. Iinuma, K. Tachibana, T. Matsushima, H. Takahashi, T. Sagiya, T. Ito, S. Miyazaki, R. Doke, A. Takeuchi, K. Miyao, A. Hirao, T. Maeda, T. Yamaguchi, M. Takada, M. Iwakuni, T. Ochi, I. Meilano, and A. Hasegawa, Coseismic and postseismic deformation related to the 2007 Chuetsu-oki, Niigata Earthquake, Earth Planets Space, 60, this issue, 1081–1086, 2008.

    Article  Google Scholar 

  • Ozawa, T., S. Nishimura, Y. Wada, and H. Ohkura, Coseismic deformation of the Mid Niigata prefecture Earthquake in 2004 detected by RADARSAT/InSAR, Earth Planets Space, 57(5), 423–428, 2005.

    Article  Google Scholar 

  • Pollitz, F. F., G. Peltzer, and R. Bürgmann, Mobility of continental mantle: Evidence from postseismic geodetic observations following the 1992 Landers earthquake, J. Geophys. Res., 105(B4), 8035–8054, 2000.

    Article  Google Scholar 

  • Sagiya, T., S. Miyazaki, and T. Tada, Continuous GPS Array and Present-day Crustal Deformation of Japan, Pure Appl. Geophys., 157(2–12), 2303–2322, 2000.

    Google Scholar 

  • Sagiya, T., M. Ohzono, S. Nishiwaki, Y. Ohta, T. Yamamuro, F. Ki-mata, and M. Sasaki, Postseismic Deformation Following the 2004 Mid-Niigata Prefecture Earthquake around the Southern Part of the Source Region, Zisin (J. Seismol. Soc. Japan), 58(3), 359–369, 2005 (in Japanese with English abstract).

    Google Scholar 

  • 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(3), 377–382, 2004.

    Article  Google Scholar 

  • Ueda, H., M. Ohtake, and H. Ohtake, Afterslip of the plate interface following the 1978 Miyagi-Oki, Japan, earthquake, as revealed from geodetic measurement data, Tectonophys., 338(1), 45–57, 2001.

    Article  Google Scholar 

  • Ueda, H., M. Ohtake, and H. Sato, Postseismic crustal deformation following the 1993 Hokkaido Nansei-oki earthquake, northern Japan: Evidence for a low-viscosity zone in the uppermost mantle, J. Geophys. Res., 108(B3), 2151, doi:10.1029/2002JB002067, 2003.

    Article  Google Scholar 

  • Wessel, P. and W. Smith, New, improved version of Generic Mapping Tools released, Trans. Am. Geophys. Union (EOS), 79(47), 579, 1998.

    Article  Google Scholar 

  • Yamanaka, Y., The Niigataken Chuetsu-Oki Earthquake, 16 July 2007 (M 6.6), NGY seismological notes, 2a,, 2007 (in Japanese).

  • Yagi, Y. and M. Kikuchi, Partitioning between seismogenic and aseismic slip as highlighted from slow slip events in Hyuga-nada, Japan, Geo-phys. Res. Lett., 30(2), 1087, doi:10.1029/2002GL015664, 2003.

    Article  Google Scholar 

  • Yagi, Y., Source process of the Niigataken Chuetsu-Oki Earthquake, 16 July 2007,, 2007 (in Japanese).

    Google Scholar 

Download references

Author information



Corresponding author

Correspondence to Takeshi Iinuma.

Rights and permissions

Open Access  This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.

The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.

To view a copy of this licence, visit

Reprints and Permissions

About this article

Cite this article

Iinuma, T., Ohta, Y., Miura, S. et al. Postseismic slip associated with the 2007 Chuetsu-oki, Niigata, Japan, Earthquake (M 6.8 on 16 July 2007) as inferred from GPS data. Earth Planet Sp 60, 1087–1091 (2008).

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI:

Key words

  • Crustal deformation
  • postseismic slip
  • GPS
  • strain concentrated zone
  • Niigata-Kobe Tectonic Zone