Imaging S-wave scatterer distribution in southeast part of the focal area of the 2005 West Off Fukuoka Prefecture Earthquake (MJMA 7.0) by dense seismic array
Earth, Planets and Space volume 58, pages 1627–1632 (2006)
Spatial distribution of S-wave scatterers in the SE part of the focal area of the 2005 West Off Fukuoka Prefecture Earthquake (M = 7.0) has been estimated using dense seismic array data. Waveforms of 22 natural earthquakes were analyzed in a frequency range of 16–24 Hz. It is difficult to estimate the inhomogeneous structure in this wavelength range with ordinary travel time tomography despite the importance of this parameter for understanding the earthquake-generating process. After filtering and gain recovery in the coda part, observed waveforms were semblance-enhanced slant-stacked into various directions from the array. This was followed by diffraction curve summation in order to image the scatterer distribution. The spatial distribution of scatterers thus imaged revealed that higher strengths were distributed at the SE-extension of the fault plane of the event, which corresponds to a region where the rupture process of the main shock stopped
Kubo, K., H. Matsuura, M. Ozaki, H. Makimoto, H. Hoshizumi, and K. Kamada, Geological Survey of Japan, Geolgical Map of Japan 1:200000 Fukuoka, 1993 (in Japanese).
Matsumoto, S. and K. Obara, Imaging P-wave scatter distribution in the focal area of the 1995 M7.2 Hyogo-Ken Nanbu (Kobe) earthquake, Geophys. Res. Lett., 25, 1439–1442, 1998.
Matsumoto, S., K. Obara, N. Kimura, and M. Nakamura, Imaging P-wave scatterer distribution around the focal area of the 2000 Western Tottori Earthquake (Mw6.6), Zisin, 2, 55, 229–232, 2002 (in Japanese).
Neidell, N. S. and M. T. Taner, Semblance and other coherency measures for multi-channel data, Geophysics, 36, 482–497, 1971.
Nishigami, K., A new inversion method of coda waveforms to determine spatial distribution of coda scatterers in the crust and uppermost mantle, Geophys. Res. Lett., 18(12), 2225–2228, 1991.
Nishigami, K., Deep crustal inhomogeneity along and around the San Andreas fault system in central California and its relation to the segmentation, J. Geophys. Res., 105, 7983–7998, 2000.
Revenaugh, J., A scattered-wave image of subduction beneath the transverse range, Science, 268, 1888–1892, 1995.
Sato, H. and M. Fehler, Seismic Wave Propagation and Scattering in the Heterogeneous Earth, pp. 1–308, Springer, 1998.
Shimizu, H., H. Takahashi, T. Okada, T. Kanazawa, Y. Iio, H. Miyamachi, T. Matsushima, M. Ichiyanagi, N. Uchida, T. Iwasaki, H. Katao, K. Goto, S. Matsumoto, N. Hirata, S. Nakao, K. Uehira, M. Shinohara, H. Yakiwara, N. Kame, T. Urabe, N. Matsuwo, T. Yamada, A. Watanabe, K. Nakahigashi, B. Enescu, K. Uchida, S. Hashimoto, S. Hirano, T. Yagi, Y. Kohno, T. Ueno, M. Saito, and M. Hori, Aftershock seismicity and fault structure of the 2005 West Off Fukuoka Prefecture Earthquake (MJMA 7.0) derived from urgent joint observations, Earth Planets Space, 58, this issue, 1599–1604, 2006.
Uehira, K., T. Yamada, M. Shinohara, K. Nakahigashi, H. Miyamachi, Y. Iio, T. Okada, H. Takahashi, N. Matsuwo, K. Uchida, T. Kanazawa, and H. Shimizu, Precise aftershock distribution of the 2005 West Off Fukuoka Prefecture Earthquake (Mj=7.0) using a dense onshore and offshore seismic network, Earth Planets and Space, 58, this issue, 1605–1610, 2006.
About this article
Cite this article
Matsumoto, S., Watanabe, A., Matsushima, T. et al. Imaging S-wave scatterer distribution in southeast part of the focal area of the 2005 West Off Fukuoka Prefecture Earthquake (MJMA 7.0) by dense seismic array. Earth Planet Sp 58, 1627–1632 (2006). https://doi.org/10.1186/BF03352673
- seismic array
- 2005 West off Fukuoka Prefecture earthquake