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Tectonomagnetic study in the eastern part of Hokkaido, NE Japan (II): Magnetic fields related with the 2003 Tokachi-oki earthquake and the 2004 Kushiro-oki earthquake
Earth, Planets and Space volume 59, pages1181–1186(2007)
We examined short-term geomagnetic changes related with the 2003 Tokachi-oki earthquake (M 8.0) and the 2004 Kushiro-oki earthquake (M 7.1) in Hokkaido, Japan. However, we could not find the precursory and co-seismic signals above several nT at a magnetic station whose epicentral distances were about 120 km and 50 km, respectively. Model calculations showed that co-seismic piezomagnetic fields did not amount to 1 nT at the station in both cases when we assumed the relevant fault parameters, in-situ Curie temperature depth, subsurface magnetic structure and stress sensitivity of rocks. Therefore, it may be reasonable that we could not detect the piezomagnetic signals at the station. We also made model calculations to forecast the piezomagnetic amplitudes caused by M 7.9 and M 8.5 earthquakes which have been expected to occur along the southern Kurile trench in the future. The model calculations reveal the piezomagnetic fields up to about −4 nT and −7 nT are expected in the eastern part of the Hokkaido island for the M 7.9 and M 8.5 earthquakes respectively, encouraging magnetic observations hereafter.
Davis, P. M., F. D. Stacey, C. J. Zablocki, and J. V. Olson, Improved signal discrimination in tectonomagnetism: discovery of a volcanomagnetic effect at Kilauea, Hawaii, Phys. Earth Planet. Inter., 19, 331–336, 1979.
Davis, P. M., D. D. Jackson, C. A. Searls, and R. L. McPherron, Detection of tectonomagnetic events using multichannel predictive filtering, J. Geophys. Res., 86, 1731–1737, 1981.
Geographical Survey Institute of Japan, Crustal deformation caused by the recent seismic activities, http://cais.gsi.go.jp/HENDOU/hendou.html/, 2006.
Headquarters for Earthquake Research Promotion, Long-term evaluation of seismic activities along the Kuril trench, http://www.jishin.go.jp/main/index.html, 2003 (in Japanese).
Hirakawa, K., Y. Nakamura, and T. Echigo, Large paleo-tsunamis along the Pacific coast of Tokachi region, Hokkaido, Chikyu Monthly, special issue, 31, 92–98, 2000 (in Japanese).
Irwan, M., F. Kimata, K. Hirahara, T. Sagiya, and A. Yamagiwa, Measuring ground deformation with 1-Hz GPS data: the 2003 Tokachi-oki earthquake (preliminary report), Earth Planets Space, 56, 389–393, 2004.
Katsumata, K. and Y. Yamanaka, The 29 November 2004 M7.1 Kushiro-oki earthquake; An event between the on-going seismic quiescence area and the asperity ruptured by the 1973 Nemuro-oki earthquake, Geophys. Bull. Hokkaido Univ., 69, 23–39, 2006 (in Japanese with English abstract).
Kikuchi, M., Realtime seismology, Univ. Tokyo Press, p. 222, Tokyo, 2003 (in Japanese).
Murakami, M., Slow slip on the plate boundary offshore eastern Hokkaido Japan along Kuril trench since the occurrence of M8.0, 2003 Tokachi-oki earthquake, in Abstracts of the Seismol. Soc. Jpn., 2005 Fall Meeting, 29, 2005.
Nanayama, F, K. Satake, R. Furukawa, K. Shimokawa, B. F. Atwater, K. Shigeno, and S. Yamaki, Unusually large earthquakes inferred from tsunami deposits along the Kuril trench, Nature, 424, 660–663, 2003.
Nishida, Y, Y. Sugisaki, K. Takahashi, M. Utsugi, and H. Oshima, Tectonomagnetic study in the eastern part of Hokkaido, NE Japan: Discrepancy between observed and calculated results, Earth Planets Space, 56, 1049–1058, 2004.
Okubo, Y, H. Tsu, and K. Ogawa, Estimation of Curie point temperature and geothermal structure of island arcs of Japan, Tectonophys., 159, 279–290, 1989.
Oshiman, N., Enhancement of tectonomagnetic change due to non-uniform magnetization in the Earth’s crust—two dimensional case studies, J. Geomag. Geoelectr, 42, 607–619, 1990.
Sasai, Y, Tectonomagnetic modeling on the basis of the linear piezomagnetic effect, Bull. Earthq. Res. Inst., Univ. Tokyo, 66, 585–722, 1991.
Sasai, Y, Enhancement of piezomagnetic signals within a bore-hole, in Electromagnetic Phenomena Related to Earthquake Prediction, edited by M. Hayakawa and Y. Fujinawa, 51–54, TERRAPUB, Tokyo, 1994.
Sasai, Y, Tectonomagnetic modeling on the piezomagnetism: a review, Annali di Geofisica, 44, 361–368, 2001.
Sasai, Y, M. J. S. Johnston, Y. Tanaka, R. Mueller, T. Hashimoto, M. Utsugi, S. Sakanaka, M. Uyeshima, J. Zlotnicki, and P. Yvetot, Dragout effect of piezomagnetic signals due to a borehole: The Mogi source as an example, Annals of Geophysics., 50, 93–104, 2007.
Satake, K., F. Nanayama, and S. Yamaki, Source models of the unusual tsunami in the 17th century in eastern Hokkaido: part 2, Rep. Active Fault and Paleoseismic Study, 4, 17–29, 2004 (in Japanese with English abstract).
Simazaki, K., Nemuro-oki earthquake of June 17, 1973: A lithospheric rebound at the upper half of the interface, Phys. Earth Planet. Inter., 9, 314–327, 1974.
Tanioka, Y., K. Hirata, R. Hino, and T. Kanazawa, Slip distribution of the 2003 Tokachi-oki earthquake estimated from tsunami waveform inversion, Earth Planets Space, 56, 373–376, 2004.
Tanioka, Y., K. Satake, and K. Hirata, Recurrence of recent large earth-quakes along the most southern part of Kurile-Kamchtka subduction zone, AGU Monoghraph, 2007 (in press).
Ueda, M. and H. Takahashi, Triggered earthquakes along the volcanic front in the eastern Hokkaido, Japan, and its relevance to the static stress change, Zisin (J. Seismol. Soc. Jpn.), 58, 115–119, 2005 (in Japanese).
Utsu, T., Large earthquakes near Hokkaido and the expectation of the occurrence of a large earthquake off Nemuro, Rep. Cord, Community Earthquake Prediction, 7, 7–13, 1972 (in Japanese).
Utsugi, M., A theoretical study on seismomagnetic effect considering the inhomogeneously magnetized Earth’s crust, Ph.D. Thesis, Hokkaido Univ., pp.128, 1999.
Utsugi, M., A computer program for the calculation of piezomagnetic field due to a spherical source (Mogi model) in the inhomogeneously magnetized crust, J. Fac. Sci., Hokkaido Univ., Ser. 7, 11, 739–751, 2000.
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Nishida, Y., Utsugi, M. & Mogi, T. Tectonomagnetic study in the eastern part of Hokkaido, NE Japan (II): Magnetic fields related with the 2003 Tokachi-oki earthquake and the 2004 Kushiro-oki earthquake. Earth Planet Sp 59, 1181–1186 (2007). https://doi.org/10.1186/BF03352065
- co-seismic signal
- detectability of piezomagnetic signal