Seismic wave conversion near the upper boundary of the Pacific plate beneath the Kanto district, Japan

Geophysical Journal International

Volumn 141, Issue 1, 2000, Pages 136-148

  Ohmi, Shiro ^a   Hori, Sadaki ^a  

^a KYOTO UNIVERSITY   (Japan)

Author keywords

Converted wave; Low velocity layer; Oceanic crust; Subduction zone; Upper mantle structure

Indexed keywords

LOW VELOCITY ZONE; OCEANIC CRUST; PHASE TRANSITION; SEISMIC WAVE; SUBDUCTION ZONE; UPPER MANTLE;

JAPAN;

EID: 0034092198     PISSN: 0956540X     EISSN: None     Source Type: Journal    
DOI: 10.1046/j.1365-246X.2000.00086.x     Document Type: Article

References (21)

1. Hamada, K. et al., 1982. Kanto-Tokai Observation network of crustal activities-National Research Center for Disaster Prevention, J. seism. Soc. Jpn. 35, 401-426 (in Japanese with English abstract).
2. Hori, S., 1988. Later phases in the seismogram of intermediate earthquake observed in the Kanto district, Prog. Abstr. seisin. Soc. Jpn, 2, 86 (in Japanese).
3. Hori, S., 1990. Seismic waves guided by untransformed oceanic crust subducting into the mantle: the case of the Kanto district, central Japan, Tectonophysics, 176, 355-376.
4. Horiuchi, S., Ishii, H. & Takagi, A., 1982. Two-dimensional depth structure of the crust beneath the Tohoku district, the northeastern Japan arc. Part 1. Method and Conrad discontinuity, J. Phys. Earth, 30, 47-69.
5. Hurukawa, N. & Imoto, M., 1990. Fine structure of an underground boundary between the Philippine Sea and Pacific plates beneath the Kanto district, Japan, J. seism. Soc. Jpit, Scr. 2, 43, 413-429 (in Japanese with English abstract).
6. Ishida, M., 1986. The configuration of the Philippine Sea and the Pacific plates as estimated from the high-resolution microearthquake hypocenters in the Kanto-Tokai district, Japan, Rep. Nat. Res. Cent. Disaster Prev., 36, 1-19 (in Japanese with English abstract).
7. Ishida, M., 1992. Geometry and relative motion of the Philippine Sea plate and Pacific plate beneath the Kanto-Tokai district, Japan, J. geophys. Res., 97, 489-513.
8. Ishida, M. & Hasemi, A.H., 1988. Three-dimensional fine velocity structure and hypocentral distribution of earthquakes beneath the Kanto-Tokai district, Japan, J. geophys. Res., 93, 2076-2094.
9. Kasahara, K., 1985. Patterns of crustal activity associated with the convergence of three plates in the Kanto-Tokai area, central Japan, Rep. Nat. Res. Cent. Disaster Prev., 35, 33-137 (in Japanese with English abstract).
10. Lees, J.M. & Ukawa, M., 1992. The south Fossa Magna, Japan, revealed by high-resolution P- and S-wave travel time tomography, Tectonophysics, 207, 377-396.
11. Matsuzawa, T., Umino, N., Hasegawa, A. & Takagi, A., 1986. Upper mantle velocity structure estimated from PS-converted waves beneath the north-eastern Japan arc, Geophys. J. R. aslr. Soc, 86, 767-787.
12. Matsuzawa, T., Kono, T., Hasegawa, A. & Takagi, A., 1990. Subducting plate boundary beneath the northeastern Japan arc estimated from SP converted waves, Tectonophysics, 181, 123-133.
13. Nakanishi, I., 1980. Precursors to ScS phases and dipping interface in the upper mantle beneath southwestern Japan, Tectonophysics, 69, 1-35.
14. Obara, K, 1989. Regional extent of the S wave reflector beneath the Kanto district, Japan, Geophys. Res. Lett., 16, 839-842.
15. Obara, K. & Sato, H, 1988. Existence of an S wave reflector near the upper plane of the double seismic zone beneath the southern Kanto district, Japan, J. geophys. Res., 93, 15037-15045.
16. Ohmi, S. & Hurukawa, N., 1996. Detection of the subducting crust of oceanic plates beneath the Kanto district, Japan, Tectonophysics, 261, 249-276.
17. Okada, Y., 1990. Seismotectonics in the southern Kanto district, centra! Japan, J. seisin. Soc. Jpn, Ser. 2. 43, 153-175 (in Japanese with English abstract).
18. Sacks, I.S. & Snoke, J.A., 1977. The use of converted phases to infer the depth of the lithosphere-asthenosphere boundary beneath South America, J. gcophys. Res. 82, 2011-2017.
19. Sekiguchi, S., 1992. Amplitude distribution of seismic waves for laterally heterogeneous structures including a subducting slab, Ceophys. J. Int., 111, 448-464.
20. Snoke, J.A., Sacks, I.S. & Okada, H., 1977. Determination of the subducting lithosphère boundary by use of converted phases, Bull, seisin. Soc. Am., 67, 1051-1060.
21. Ukawa, M., Ishida, M., Matsumura, S. & Kasahara, K., 1984. Hypocenter determination method of the Kanto-Tokai observational network for microearthquakes, Res. Notes, Nat. Res. Center Disaster Prer., S3, 1-88 (in Japanese with English abstract).