Philippine Sea plate
Philippine Sea plate unified based on the velocity structures by seismic tomography, seismicity, focal mechanisms, seismic reflection and refraction survey, receiver function analysis.
Figure 1. Depth contour map of the upper boundary of the Philippine Sea slab.
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Data of southwestern Japan1, 3, 9 , Kanto district4 , and northern area of Izu island10 are compiled.
Green areas denote the estimated asperities or locked zone on the Philippine Sea slab7, 13 , and expected source region of the Tokai, Tonankai, Nankai earthquakes2, 15 .
Blue areas denote the slow slip events5, 6, 8, 11, 12 .
Arrows indicate direction of plate motion of the Philippine Sea plate relative to the continental plate14 .
Red triangles denote active volcanoes.
References
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Central Disaster Management Council (2001), Report of the specialized investigation committee about Tokai earthquake (in Japanese), http://www.bousai.go.jp/jishin/chubou/20011218/siryou2-2.pdf, (2006-11-15).
Hirose, F., J. Nakajima, and A. Hasegawa (2008), Three-dimensional seismic velocity structure and configuration of the Philippine Sea slab in southwestern Japan estimated by double-difference tomography, J. Geophys. Res., 113, B09315, doi:10.1029/2007JB005274.
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Matsumura, S. (1997), Focal zone of a future Tokai earthquake inferred from the seismicity pattern around the plate interface, Tectonophys., 273, 271-291.
Miyazaki, S., P. Segall, J. J. McGuire, T. Kato, and Y. Hatanaka (2006), Spatial and temporal evolution of stress and slip rate during the 2000 Tokai slow earthquake, J. Geophys. Res., 111, B03409, doi:10.1029/2004JB003426.
Nakajima, J., and A. Hasegawa (2007), Subduction of the Philippine Sea plate beneath southwestern Japan: Slab geometry and its relationship to arc magmatism, J. Geophys. Res., 112, B08306, doi:10.1029/2006JB004770.
Nakajima, J., F. Hirose, and A. Hasegawa (2009), Seismotectonics beneath the Tokyo metropolitan area, Japan: Effect of slab-slab contact and overlap on seismicity, J. Geophys. Res., 114, B08309, doi:10.1029/2008JB006101.
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Sagiya, T (2004), Interplate coupling in the Kanto district, Central Japan, and the Boso peninsula silent earthquake in May 1996, Pure Appl. Geophys., 161, 2327-2342.
Wald, D. J., and P. G. Somerville (1995), Variable-slip rupture model of the great 1923 Kanto, Japan, earthquake: Geodetic and body-waveform analysis, Bull. Seism. Soc. Am., 85, 159-177.
Wei, D., and T. Seno (1998), Determination of the Amurian plate motion, in "Mantle dynamics and plate interactions in East Asia", Geodynamics. Series, 27, ed. by M. F. J. Flower, S. L. Chung, C. H. Lo, and T. Y. Lee, pp. 337-346, AGU, Washington D. C.
Earthquake Research Committee (2001), Long-term evaluation of earthquakes in the Nankai trough (in Japanese), http://www.jishin.go.jp/main/chousa/01sep_nankai/index.htm, (2006-11-15).