Special Issue: Electromagnetic Induction in the Earth
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Conductivity distribution and seismicity in the northeastern Japan Arc
Earth, Planets and Space volume 54, pages 629–636 (2002)
Abstract
Wideband magnetotelluric (MT) observation data were obtained from 91 sites along six transects in the central part of the Japan Arc. Here, a quasi-3D georesistivity distribution, in addition to other geophysical and geological parameters, is used to better understand seismicity in the region. We found that high seismicity in the Central Mountain Range is due to relatively poor fluid saturation caused by volcanism. The high conductive fracture zone in the west of the Central Basin without big earthquakes is characterized by a low Poisson ratio. It is suggested that strains cannot be accumulated in those regions. The Miyagi-ken-hokubu region with a frequent occurrence of large earthquakes, is conductive—high Poisson ratio—high Vp suggesting that the zone is relatively fluid-rich and brittle.
References
Active Fault Research Group, Active Faults in Japan, 437 pp., University of Tokyo Press, Tokyo, 1991.
Aprea, C., M. Unsworth, and J. Booker, Resistivity structure of the Olympic Mountains and Puget Lowlands, Geophys. Res. Lett., 25, 109–112, 1998.
Chen, L., J. R. Booker, A. G. Jones, N. Wu, M. J. Unsworth, W. Wei, and H. Tan, Electrically conductive crust in Southern Tibet from INDEPTH magnetotelluric surveying, Science, 274, 1694–1696, 1996.
Fujinawa, Y., N. Kawakami, T. H. Asch, M. Uyeshima, and Y. Honkura, Studies of the Georesistivity structure in the central part of the northeastern Japan Arc, J. Geomag. Geoelectr., 49, 1601–1617, 1997.
Fujinawa, Y., N. Kawakami, J. Inoue, T. H. Asch, S. Takasugi, and Y. Honkura, 2-D georesistivity structure in the central part of the northeastern Japan arc, Earth Planets Space, 51, 1035–1046, 1999.
Gamble, T. D., W. M. Goubau, and J. Clarke, Magnetotellurics with a remote reference, Geophysics, 44, 53–68, 1979.
Geological Survey of Japan, Geological Map of Japan 1:1,000,000, Geological Survey of Japan, 1995.
Groom, R. W. and R. C. Bailey, Decomposition of magnetotelluric impedance tensors in the presence of local three-dimensional galvanic distortions, J. Geophys. Res., 94, 1913–1925, 1989.
Hasegawa, A., D. Zhao, S. Hori, A. Yamamoto, and S. Horiuchi, Deep structure of the northeastern Japan arc and its relationship to seismic and volcanic activity, Nature, 352, 682–689, 1991.
Honkura, Y., Electrical conductivity structure in the upper mantle and its implications for the origin of magma, Kazan, 2(33), 203–212, 1988.
Horiuchi, S., H. Ishii, and A. Takagi, Two-dimensional depth structure of the crust beneath the Tohoku District, the northeastern Japan arc, I, Method and Conrad discontinuity, J. Phys. Earth, 30, 47–69, 1982.
Jones, A. G., Electrical conductivity of the continental lower crust, in Continental Lower Crust, edited by D. M. Fountain, R. J. Arculus, and R. W. Kay, Elsevier, New York, 1992.
Kawakami, N., Y. Fujinawa, T. H. Asch, and S. Takasugi, Local three dimensional galvanic distortions in the central part of northeastern Japan, J. Geomag. Geoelectr., 49, 1387–1400, 1997.
Lee, K. H., K. Yamane, and S. Takasugi, A new 2-D inversion scheme for magnetotelluric data using a modified RRI method, Proceedings of the World Geothermal Congress 2, pp. 915–920, 1995.
Nabetani, S. and M. Fukuta, Conductivity structure of crust and mantle in the Northeastern Japan prospected by MT and GEMIT method, 10. Backbone Mountainland, Aomori, Sci. Rep. Hirosaki Univ., 42, 53–60, 1995.
Nabetani, S., K. Maekawa, and K. Uchida, Conductivity structure of crust and mantle in the Northeastern Japan prospected by MT and GEMIT method, 1. East to west section along 40°40′N traverse, Sci. Rep. Hirosaki Univ., 39, 37–46, 1992.
Ogawa, Y., Deep crustal resistivity structure revealed by sideband magnetotellurics-Tohoku and Hokkaido region, University of Tokyo, 1992.
Sato, H., I. S. Sacks, and T. Murase, The use of laboratory velocity data for estimating temperature and partial melt fraction in the low velocity zone: comparison with heat flow and electrical conductivity studies, J. Geophys. Res., 94, 5689–5704, 1989.
Schultz, A. P. and R. S. Crosson, Seismic velocity structure across the Central Washington Cascade Range from refraction interpretation with earthquakes sources, J. Geophys. Res., 101, 27899–27915, 1996.
Simpson, F., Stress and seismicity in the lower-continental crust: a challenge to simple ductility and implication for electrical conductivity mechanisms, The 14th Workshop on Electromagnetic Induction in the Earth, pp. 215–228, 1998.
Smith, J. T. and J. R. Booker, Rapid inversion of two and three dimensional magnetotelluric data, J. Geophys. Res., 96, 3905–3922, 1991.
Umino, N. and A. Hasegawa, Inhomogeneous structure of the crust and its relationship to earthquake ocurrence, in Seismotectonics in Convergent Plate Boundary, pp. 225–235, 2002.
Utada, H., A direct inversion method for two-dimensional modeling in the geomagnetic induction problem, Doctoral thesis, University of Tokyo, 1987.
Wu, H. and J. M. Lees, Three-dimensional P and S wave velocity structures of the Coso Geothermal Area, California, from microseismic travel time data, J. Geophys. Res., 104, 13217–13233, 1999.
Yamane, K., S. Takasugi, and K. H. Lee, A new magnetotelluric inversion scheme using generalized RRI method and case studies, Geophysics, 35, 209–213, 1996.
Yokokura, T., T. Miyazaki, N. Kano, and K. Yamaguchi, Lower crustal and sub-crustal reflectors beneath the southern Kit akami area, Abst. 1998 Japan Earth and Planetary Science Joint Meeting, pp. 363, 1998.
Zhao, D. and H. Negishi, The 1995 Kobe earthquake: Seismic image of the source zone and its implications for the rupture nucleation, J. Geophys. Res., 103(B5), 9967–9986, 1998.
Zhao, D., A. Hasegawa, and S. Horiuchi, Tomographic imaging of P and W wave velocity structure beneath Northeastern Japan, J. Geophys. Res., 97, 19909–19928, 1992.
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Fujinawa, Y., Kawakami, N., Inoue, J. et al. Conductivity distribution and seismicity in the northeastern Japan Arc. Earth Planet Sp 54, 629–636 (2002). https://doi.org/10.1186/BF03353051
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DOI: https://doi.org/10.1186/BF03353051