Skip to main content

Advertisement

We’d like to understand how you use our websites in order to improve them. Register your interest.

A dense GPS observation immediately after the 2004 mid-Niigata prefecture earthquake

Abstract

To investigate the postseismic crustal deformation associated with the 2004 mid-Niigata prefecture earthquake (M6.8), we newly started GPS observation to fill a gap of the nationwide continuous GPS network. Our GPS sites were mainly distributed in the focal region without permanent GPS site, and succeeded in obtaining the postseismic deformation. Coseismic displacements of two aftershocks were clearly detected because of immediate observation. Estimated fault parameters of the aftershock (M5.9) on November 8 occurring just beneath our GPS network indicated that geodetic data could be explained by either east- or west-dipping fault model inferred from detailed aftershock data. Moreover, clear postseismic deformation, which could be characterized by a logarithmic decay function, was observed. This signal probably suggests possible aseismic slip. Our results indicated that dense GPS observation could give important and interesting data to clarify the properties of shallow inland middle-size earthquakes.

References

  1. Altamimi, Z., P. Sillard, and C. Boucher, ITRF2000: A new release of the International Terrestrial Reference Frame for earth science applications, J. Geophys. Res., 107, 2214, doi:10.1029/2001JB000561, 2002.

    Article  Google Scholar 

  2. Heki, K. and S. Miyazaki, Plate convergence and long-term crustal deformation in central Japan, Geophys. Res. Lett, 28, 2313–2316, 2001.

    Article  Google Scholar 

  3. Honda, R., S. Aoi, N. Morikawa, H. Sekiguchi, T. Kunugi, and H. Fujiwara, Ground motion and rupture process of the 2004 Mid Niigata Prefecture earthquake obtained from strong motion data of K-NET and KiK-net, Earth Planets Space, 57, 527–532, 2005.

    Article  Google Scholar 

  4. Hugentobler, U., S. Schaer, and P. Fridez, Bernese GPS Software Version 4.2, University of Bern, 515 pp, 2001.

    Google Scholar 

  5. Ishikawa, Y., Northern Niigata Earthquake and seismic gap, Earth Monthly, 17, 784–788, 1995.

    Google Scholar 

  6. Kato, A., S. Sakai, N. Hirata, E. Kurashimo, S. Nagai, T. Iidaka, T. Igarashi, Y. Yamanaka, S. Murotani, T. Kawamura, T. Iwasaki, and T. Kanazawa, Short-term spatiotemporal variations in the aftershock sequence of the 2004 mid-Niigata prefecture earthquake, Earth Planets Space, 57, 551–556, 2005.

    Article  Google Scholar 

  7. Kobayashi, Y., Initiation of subduction of a plate, Earth Month., 5, 510–514, 1983 (in Japanese).

    Google Scholar 

  8. Nakamura, K., Possibility of a nascent plate boundary at the eastern margin of the Japan Sea, Bull. Earthquake Res. Inst., Univ. Tokyo, 58, 711–722, 1983 (in Japanese).

    Google Scholar 

  9. Nakata, T. and T. Imaizumi (ed.), Digital Active Fault Map of Japan, University of Tokyo Press, 2002.

    Google Scholar 

  10. Ohtake, M., Earthquake occurrence potential in eastern margin of the Japan Sea, in Active Faults and Seismi-tectonics of the Eastern Margin of the Japan Sea, edited by M. Ohtake, A. Taira, and Y. Ohta, University of Tokyo Press, 2002.

    Google Scholar 

  11. Okada, Y., Surface deformation due to shear and tensile faults in a half space, Bull. Seis. Soc. Am., 75, 1135–1154, 1985.

    Google Scholar 

  12. 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, 423–428, 2005.

    Article  Google Scholar 

  13. Sagiya, T., S. Miyazaki, and T. Tada, Continuous GPS Array and Present-day Crustal Deformation of Japan, PAGEOPH, 157, 2303–2322, 2000.

    Google Scholar 

  14. Scholz, C. H., The Mechanics of Earthquakes and Faulting, Cambridge University Press, 1990.

    Google Scholar 

  15. Seno, T., T. Sakurai, and S. Stein, Can the Okhotsk plate be discriminated from the North American plate?, J. Geophys. Res., 101, 11305–11315, 1996.

    Article  Google Scholar 

  16. Shibutani, T., Y. Iio, S. Matsumoto, H. Katao, T. Matsushima, S. Ohmi, F. Takeuchi, K. Uehira, K. Nishigami, B. Enescu, I. Hirose, Y. Kano, Y. Kohno, M. Korenaga, Y. Mamada, M. Miyazawa, K. Tatsumi, T. Ueno, H. Wada, and Y. Yukutake, Aftershock distribution of the 2004 Mid Niigata Prefecture Earthquake derived from a combined analysis of temporary online observations and permanent observations, Earth Planets Space, 57, 545–549, 2005.

    Article  Google Scholar 

  17. Tsukuda, T., Possibility of large earthquake occurrence in Niigata plain, Earth Monthly, 17, 789–796, 1995.

    Google Scholar 

  18. Wessel, P. and W. H. F. Smith, New version of the Generic Mapping Tools released, EOS Trans. AGU, 76, 329, 1995.

    Article  Google Scholar 

  19. Yagi, Y., http://iisee.kenken.go.jp/staff/yagi/eq/20041023/, 2004.

  20. Yamanaka, Y., EIC seismological note, no. 154, http://www.eri.u-tokyo.ac.jp/sanchu/SeismoNote/, 2004.

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Hiroaki Takahashi.

Rights and permissions

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Takahashi, H., Matsushima, T., Kato, T. et al. A dense GPS observation immediately after the 2004 mid-Niigata prefecture earthquake. Earth Planet Sp 57, 661–665 (2005). https://doi.org/10.1186/BF03351844

Download citation

Key words

  • The 2004 mid-Niigata prefecture earthquake
  • GPS
  • postseismic deformation
  • fault model
  • aseismic slip