Special Issue: Application of GPS and other space geodetic techniques to Earth Sciences (2)
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A block-fault model for deformation of the Japanese Islands derived from continuous GPS observation
Earth, Planets and Space volume 52, pages 1095–1100 (2000)
We interpret the continuous GPS data for the Japanese islands from 1996 to 1999 using the model of Hashimoto and Jackson (1993). In this model crustal deformation is represented by a combination of rigid block motions and deformation due to slip deficits along the fault-bounding blocks. Hashimoto and Jackson used 19 blocks, 104 faults, and geodetic data spanning 100 years. In the present work we assume the same fault and block geometry, and we use only the continuous GPS data. Compared to the previous study, the motions of the major blocks are a bit larger: 107 ± 8 mm/yr for the Pacific plate, 47 ± 2 mm/yr for the Philippine Sea plate, and 24 ± 2 mm/yr for the Izu block, all relative to the Amurian plate. The estimated slip directions on active inland faults are now more consistent with geological estimates. Slip deficit rates exceed 10 mm/yr along the Itoigawa-Shizuoka Tectonic Line, Shinanogawa Seismic Zone, Atotsugawa fault, Hanaori fault, Arima-Takatsuki Tectonic Line, Rokko faults, Median Tectonic Line, and southern boundary of the Beppu-Shimabara graben. Some interplate faults along the Japan and Kurile trenches have slip deficit rates larger than 100 mm/yr, although postseismic deformation from the 1994 Far Off Sanriku earthquake may contaminate these estimates. An interplate fault off Kyushu has a negative slip deficit, possibly due to post-seismic movements from the 1996 events in Hyuganada.
Hashimoto, M., Horizontal strain rates in the Japanese islands during interseismic period deduced from geodetic surveys (Part I): Honshu, Shikoku and Kyushu, Zisin, 43, 13–26, 1990 (in Japanese with English abstract).
Hashimoto, M., Complexity in the recurrence of large earthquakes in southwestern Japan: a simulation with an interacting fault system model, Earth Planets Space, 52, 2000 (in press).
Hashimoto, M. and D. D. Jackson, Plate tectonics and crustal deformation around the Japanese Islands, J. Geophys. Res., 98, 16149–16166, 1993.
Hashimoto, M. and T. Tada, Horizontal crustal movements in Hokkaido and its tectonic implications, Zisin, 41, 29–38, 1988 (in Japanese with English abstract).
Heki, K., S. Miyazaki, H. Takahashi, M. Kasahara, F. Kimata, S. Miura, N. F. Vasilenko, A. Ivashchenko, and K. An, The Amurian plate motion and current plate kinematics in eastern Asia, J. Geophys. Res., 104, 29147–29155, 1999.
Ishikawa, N. and M. Hashimoto, Average horizontal crustal strain rates in Japan during interseismic period deduced from geodetic surveys (Part 2), Zisin, 52, 299–315, 1999 (in Japanese with English abstract).
Ito, T., S. Yoshioka, and S. Miyazaki, Interplate coupling in northeast Japan deduced from inversion analysis of GPS data, Earth Planet. Sci. Lett., 176, 117–130, 2000.
Kawasaki, I., Y. Asai, and Y. Tamura, Interplate moment release in seismic and seismo-geodetic bands and the seismo-geodetic coupling in the Sanriku-Oki region along the Japan trench—A basis of mid-term/long-term prediction—, Zisin, 50, Supplement, 293–307, 1998 (in Japanese with English abstract).
Matsu’ura, M., D. D. Jackson, and A. Cheng, Dislocation model for aseismic crustal deformation at Hollister, California, J. Geophys. Res., 91, 12661–12674, 1986.
Miyazaki, S. and K. Heki, Crustal Velocity Field of Southwest Japan: Subduction and Arc-arc Collision, J. Geophys. Res., 2000 (submitted).
Nishimura, T., S. Miyazaki, T. Sagiya, T. Tada, S. Miura, T. Hirasawa, and K. Tanaka, Spatio-temporal distribution of interplate coupling east off Tohoku district—deduced from GPS observation for five years—,Program and Abstracts, Seismol. Soc. Jpn., 1999, Fall Meeting, B65, 1999 (in Japanese).
Savage, J. C., A dislocation model of strain accumulation and release at a subduction zone, J. Geophys. Res., 88, 4984–4996, 1983.
Savage, J. C. and R. O. Burford, Accumulation of tectonic strain in California, Bull. Seismol. Soc. Amer, 60, 1877–1896, 1970.
Savage, J. C. and R. O. Burford, Geodetic determination of relative plate motion in central California, J. Geophys. Res., 78, 832–845, 1973.
Scholz, C. H. and T. J. Fitch, Strain accumulation along the San Andreas fault, J. Geophys. Res., 74, 6649–6666, 1969.
Tada, T., Spreading of the Okinawa trough and its relation to the crustal de-formation in Kyushu, Zisin, 37, 407–415, 1984 (in Japanese with English abstract).
Tada, T., Spreading of the Okinawa trough and its relation to the crustal deformation in Kyushu, 2, Zisin, 38, 1–12, 1985 (in Japanese with English abstract).
Wessel, P. and W. H. F. Smith, Free software helps map and display data, EOS Trans. Amer Geophys. U., 72, 441, 445–446, 1991.
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Hashimoto, M., Miyazaki, S. & Jackson, D.D. A block-fault model for deformation of the Japanese Islands derived from continuous GPS observation. Earth Planet Sp 52, 1095–1100 (2000). https://doi.org/10.1186/BF03352337
- Geodetic Data
- Japanese Island
- Nankai Trough
- Japan Trench
- Postseismic Deformation