Skip to main content

Volume 60 Supplement 11

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

Source process of the 2007 Niigata-ken Chuetsu-oki earthquake derived from near-fault strong motion data

Abstract

The 2007 Niigata-ken Chuetsu-oki earthquake generated strong ground motions in Kashiwazaki and Kariwa, where the world largest nuclear power plant was in operation. Due to the complexity of the aftershock distribution, activation of the northwest-dipping fault and/or the southeast-dipping fault is proposed. To explore the fault geometry and source process of the earthquake, we performed multi-time window linear waveform inversions for both the fault planes from near-fault strong motion data. A fault plane model of 30 km in length by 24 km in width was set to cover the region of aftershock distribution within 24 h of the mainshock. Both inverted slip models provided moment magnitudes of 6.7 with a small asperity near the rupture starting point, and a large asperity approximately 10 km southwest of the rupture initiation, which is located in the region of relatively sparse aftershock distribution. Both the small and large asperities are located near the intersection between the two conjugate fault plane models, and the asperities of both models have similar radiation patterns. Therefore, the difference of the residuals between the observed and synthetic waveforms for both models was not significant, indicating that it is difficult to conclude which fault is the rupture.

References

  1. Abrahamson, N. A. and P. G. Somerville, Effects of the hanging wall and footwall on ground motions recorded during the Northridge earthquake, Bull. Seismol. Soc. Am., 86, S93–S99, 1996.

    Google Scholar 

  2. Akaike, H., Likelihood and the Bayes procedure, in Bayesian statistics, edited by J. M. Bernardo, M. H. DeGroot, and A. F. M. Smith, 143–166, University Press, Valencia, Spain, 1980.

    Google Scholar 

  3. Aoi, S. and N. Morikawa, Strong ground motions and rupture process of the 2007 Niigata-ken Chuetsu-oki earthquake, Proceedings of the 35th Symposium of Earthquake Ground Motion, AIJ, 41–46, 2007 (in Japanese with English abstract).

    Google Scholar 

  4. Aoi, S., K. Obara, S. Hori, K. Kasahara, and Y. Okada, New Strong-Motion Observation Network: KiK-net, Eos Trans. AGU, 81, 329, 2000.

    Google Scholar 

  5. Aoi, S., T. Kunugi, and H. Fujiwara, Strong-motion seismograph network operated by NIED: K-NET and KiK-net, J. Jpn. Assoc. Earthq. Eng., 4, 65–74, 2004.

    Google Scholar 

  6. Bouchon, M., A simple method to calculate Green’s function for elastic layered media, Bull. Seismol. Soc. Am., 71, 959–971, 1981.

    Google Scholar 

  7. Earthquake Research Committee, Headquarters for Earthquake Research Promotion, Evaluation of the 2007 Niigataken Chuetsuoki earthquake, http://www.jishin.go.jp/main/chousa/08janchuetsuoki/index.htm, 2008 (in Japanese).

    Google Scholar 

  8. Fukuyama, E., M. Ishida, S. Hori, S. Sekiguchi, and S. Watada, Broadband seismic observation conducted under the FREESIA Project, Rep. Nat’l. Res. Inst. Earth Sci. Disas. Prev., 57, 23–31, 1996.

    Google Scholar 

  9. Geographical Survey Institute, Crustal deformation and fault model associated with the Niigataken Chuetsu-oki earthquake in 2007 (part 1), Seismol. Soc. Jpn. Programme. Abstr. Fall Meeting, A11–02, 2007 (in Japanese).

    Google Scholar 

  10. Hartzell, S. H. and T. H. Heaton, Inversion of strong ground motion and teleseismic waveform data for the fault rupture history of the 1979 Imperial Valley, California, earthquake, Bull. Seismol. Soc. Am., 73, 1553–1583, 1983.

    Google Scholar 

  11. Hirata, N., H. Sato, S. Sakai, and A. Kato, Source fault of the 2007 Niigata-ken Chuetsu-oki earthquake, Sci. J. Kagaku, 77, 930–934, 2007 (in Japanese).

    Google Scholar 

  12. Japan Meteorological Agency, Outline of the Niigataken Chuetsu-oki earthquake in 2007, Seismol. Soc. Jpn. Programme. Abstr. Fall Meeting, A11–01, 2007 (in Japanese).

    Google Scholar 

  13. Kennett, B. L. and N. J. Kerry, Seismic waves in a stratified half space, Geophys. J. R. Astr. Soc., 57, 557–583, 1979.

    Article  Google Scholar 

  14. Kinoshita, S., Kyoshin Net (K-NET), Seismol. Res. Lett., 69, 309–332, 1998.

    Article  Google Scholar 

  15. Lawson, C. L. and R. J. Hanson, Solving Least Squares Problems, 340 pp., Prentice-Hall Inc., New Jersey, 1974.

    Google Scholar 

  16. Matsumoto, T., H. Matsubayashi, and T. Kazakami, F-net moment tensor solutions on the Niigataken Chuetsu-oki earthquake, Seismol. Soc. Jpn. Programme. Abstr. Fall Meeting, P1–088, 2007 (in Japanese).

    Google Scholar 

  17. Obara, K., Hi-net: High sensitivity seismograph network, Japan, Lecture Notes in Earth Sciences, 98, 79–88, 2003.

    Article  Google Scholar 

  18. Sekiguchi, H., K. Irikura, and T. Iwata, Source inversion for estimating continuous slip distribution on the fault, —Introduction of Green’s functions convolved with a correction function to give moving dislocation effects in subfaults—, Geophys. J. Int.,150, 377–391, 2002.

    Article  Google Scholar 

  19. Shinohara, M., T. Kanazawa, T. Yamada, K. Nakahigashi, S. Sakai, R. Hino, Y. Murai, A. Yamazaki, K. Obana, Y. Ito, K. Iwakiri, R. Miura, Y. Machida, K. Mochizuki, K. Uehira, M. Tahara, A. Kuwano, S. Amamiya, S. Kodaira, T. Takanami, Y. Kaneda, and T. Iwasaki, Precise aftershock distribution of the 2007 Chuetsu-oki Earthquake obtained by using an ocean bottom seismometer network, Earth Planets Space, 60, this issue, 1121–1126, 2008.

    Article  Google Scholar 

  20. Si, H. and S. Midorikawa, New attenuation relationships for peak ground acceleration and velocity considering effect of fault type and site condition, J. Struct. Constr. Eng., AIJ, 523, 63–70, 1999 (in Japanese with English abstract).

    Google Scholar 

  21. Waldhauser, F. and W. L. Ellsworth, A double-difference earthquake location algorithm: Method and application to the northern Hayward fault, Bull. Seismol. Soc. Am., 90, 1353–1368, 2000.

    Article  Google Scholar 

  22. Yoshida, N., H. Goto, K. Wakamatsu, S. Aoi, S. Fukumoto, and T. Mikami, Investigation on Record at K-NET Kashiwazaki during the 2007 Niigataken-chuetsu-oki earthquake, gakuin.ac.jp/yoshida/inform/chuetsuoki/k-net-e.pdf, 2007.

    Google Scholar 

  23. Yukutake, Y., T. Takeda, and K. Obara, Well-resolved hypocenter distribution using the double-difference relocation method in the region of the 2007 Chuetsu-oki Earthquake, Earth Planets Space, 60, this issue, 1105–1109, 2008.

    Article  Google Scholar 

Download references

Author information

Affiliations

Authors

Corresponding author

Correspondence to Shin Aoi.

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 https://creativecommons.org/licenses/by/4.0/.

Reprints and Permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Aoi, S., Sekiguchi, H., Morikawa, N. et al. Source process of the 2007 Niigata-ken Chuetsu-oki earthquake derived from near-fault strong motion data. Earth Planet Sp 60, 1131–1135 (2008). https://doi.org/10.1186/BF03353149

Download citation

Key-words

  • Source process
  • waveform inversion
  • 2007 Niigata-ken Chuetsu-oki earthquake
  • near-fault strong
\