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Characteristics of the surface rupture associated with the 2004 Mid Niigata Prefecture earthquake, central Japan and their seismotectonic implications

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Abstract

The 2004 Mid Niigata Prefecture earthquake sequence produced a nearly 1-km-long, N-S to NNW-SSE-striking, west-side-up surface rupture along a previously unmapped fault at Obiro, Uonuma City, eastern margin of the epicentral region. The maximum vertical displacement is 20 cm. The topographic and geometric features of the surface rupture are indicative of reverse faulting with dip to the west, which is consistent with focal mechanism solutions and aftershock distribution. Along the major active faults and folds that form the framework of landforms in the epicentral region, systematic surface ruptures were not found. Exceptionally small rupture dimension and offset amount of the surface rupture compared with those of the modeled fault suggest that the fault slip appears to have been accommodated by both internal deformation in thick Neogene-Quaternary deposits and growth of the folds and blind thrusts around the epicentral region.

References

  1. Carver, G. A. and J. P. McCalpin, Chapter 5 Paleoseismology of compressional tectonic environments, in Paleoseismology, edited by J. P. Mc-Calpin, pp. 183–270, Academic Press, California, 1996.

  2. Hirata, N., H. Sato, S. Sakai, A. Kato, and E. Kurashimo, Fault system of the 2004 Mid Niigata Prefecture Earthquake and its aftershocks, Landslides, 2, doi:10.1007/s10346-005-0050-8, 2005.

  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, this issue, 527–532, 2005.

  4. Japan Meteorological Agency, CMT analysis with JMA broadband seismograph network, event/0410231756.html, last accessed 28 Dec. 2004, 2004 (in Japanese).

  5. Kato, H. and H. Yamazaki, Neotectonic map of Shin-etsu district in Japan, Tectonic map series 5, Geological Survey of Japan, 1979.

  6. Maruyama, T., Y. Fusejima, T. Matsu’ura, Y. Awata, T. Yoshioka, K. Mizuno, R. Imura, T. Ishiyama, and T. Komatsubara, Urgent geological investigation on the surface rupture associated with the 2004 Mid Ni-igata Prefecture earthquake, Chishitsu News, 604, 1, 2004 (in Japanese).

  7. Maruyama, T., Y. Fusejima, T. Yoshioka, and Y. Awata, Report on urgent geological investigation along the surface rupture associated with the 2004 Mid Niigata Prefecture earthquake, Seismol. Soc. Japan Newsletter, 16(5), 33–34, 2005 (in Japanese).

  8. Nakata, T. and T. Imaizumi (eds.), Digital Active Fault Map of Japan, 60 pp. with 2 DVD-ROM, University of Tokyo Press, Tokyo, 2002 (in Japanese).

  9. National Research Institute for Earth Science and Disaster Prevention, 2004 Mid Niigata Earthquake, http://www.hinet.bosai.go.jp/topics/niigata041023/index e.html, last accessed 28 Dec. 2004, 2004.

  10. Okamura, Y., Fault-related folds and an imbricate thrust system on the northwestern margin of the northern Fossa Magna region, central Japan, The Island Arc, 12, 61–73, 2003.

  11. Research Group for Active Faults of Japan, Active Faults in Japan: Sheet Maps and Inventories (Revised edition), 437 pp., University of Tokyo Press, Tokyo, 1991 (in Japanese with English summary).

  12. Japan, [416]-2001 (Latest Edition), 605 pp., University of Tokyo Press, Tokyo, 2003 (in Japanese).

  13. Watanabe, M., H. Tsutsumi, Y. Suzuki, H.-Y. Kim, and N. Sato, 1:25,000 Active Fault Map in Urban Area, Ojiya, D.1-No. 388, Geographical Survey Institute, 2001.

  14. Yanagisawa, Y., I. Kobayashi, K. Takeuchi, M. Tateishi, K. Chihara, and H. Kato, Geology of the Ojiya district, With Geological Sheet Map at 1:50,000, Geological Survey of Japan, 177 pp, 1986 (in Japanese with English abstract 6 p).

  15. Yeats, R. S., K. Sieh, and C. R. Allen, The Geology of Earthquakes, Oxford University Press, New York, 568 pp., 1997.

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Correspondence to Tadashi Maruyama.

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Maruyama, T., Fusejima, Y., Yoshioka, T. et al. Characteristics of the surface rupture associated with the 2004 Mid Niigata Prefecture earthquake, central Japan and their seismotectonic implications. Earth Planet Sp 57, 521–526 (2005) doi:10.1186/BF03352586

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Key words

  • Surface rupture
  • reverse fault
  • 2004 Mid Niigata Prefecture earthquake
  • tectonics