Two parallel trench-normal fault planes within the Pacific slab associated with the 1994 and 2000 Kurile earthquakes as revealed by simultaneous relocation of their main shocks and aftershocks

Earth, Planets and Space

Volumn 59, Issue 8, 2007, Pages

  Harada, Tomoya ^a   Ishibashi, Katsuhiko ^a  

^a KOBE UNIVERSITY   (Japan)

Author keywords

1994 Hokkiado toho oki earthquake; 2000 Nemuro hanto oki earthquake; Intraslab earthquake; Kurile trench; Simultaneous relocation; Trench normal weak zone

Indexed keywords

AFTERSHOCK; EARTHQUAKE EVENT; EARTHQUAKE HYPOCENTER; EARTHQUAKE MAGNITUDE; EARTHQUAKE RUPTURE; FAULT PLANE; FRACTURE ZONE; NORMAL FAULT; PACIFIC PLATE; SLAB;

PACIFIC OCEAN; PHILIPPINE SEA;

EID: 39449091984     PISSN: 13438832     EISSN: 18805981     Source Type: Journal    
DOI: 10.1186/bf03352025     Document Type: Article

References (17)

1. Enescu, B., J. Mori, and S. Ohmi, Double-difference relocations of the 2004 off the Kii peninsula earthquakes, Earth Planets Space, 57, 357-362, 2005.
2. Hilde, T. W. C., N. Isezaki, and J. M. Wageman, Mesozoic sea-floor spreading in the north Pacific, in The Geophysics of the Pacific Ocean Basin and its Margins, Geophys. Monogr. Ser. 19, edited by G. H. Sutton, M. H. Manghnani, and R. Moberly, pp. 205-226, AGU, Washington, D. C., 1976.
3. Hurukawa, N., Quick aftershock relocation of the 1994 Shikotan earthquake and its fault planes, Geophys. Res. Lett., 22, 3159-3162, 1995.
4. Hurukawa, N. and M. Imoto, Subducting oceanic crusts of the Philippine Sea and Pacific plates and weak-zone-normal compression in the Kanto district, Japan, Geophys. J. Int., 109, 639-652, 1992.
5. International Seismological Centre, On-line Bulletin, http://www.isc.ac.uk/Bull, Intematl. Seis. Cent., Thatcham, United Kingdom, 2005.
6. Kanamori, H., Faulting of the great Kanto earthquake of 1923 as revealed by seismological data, Bull. Earthq. Res. Inst., 49, 13-18, 1971.
7. Kasahara, M. and T. Sasatani, Source characteristics of the Kunashiri strait earthquake of December 6, 1978 as deduced from strain seismograms, Phys. Earth Planet. Inter., 37, 124-134, 1985.
8. Katsumata, K., M. Ichiyanagi, M. Miwa, M. Kasahara, and H. Miyamachi, Aftershock distribution of the October 4, 1994 Mw8.3 Kurile islands earthquake determined by a local seismic network in Hokkaido, Japan, Geophys. Res. Lett., 22, 1321-1324, 1995.
9. Kennett, B. L. N., E. R. Engdahl, and R. Buland, Constraints on seismic velocities in the Earth from traveltimes, Geophys. J. Int., 122, 108-124, 1995.
10. Kikuchi, M. and H. Kanamori, The Shikotan earthquake of October 4, 1994: Lithospheric earthquake, Geophys. Res. Lett., 22, 1025-1028, 1995.
11. Miyoshi, T. and K. Ishibashi, A tectonic interpretation of NW-SE strike-slip faulting during the 2004 off the Kii peninsula earthquake, Japan: Probable tear of the Philippine Sea plate, Earth Planets Space, 57, 1115-1120, 2005.
12. Seno, T., T. Sakurai, and S. Stein, Can the Okhotsk plate be discriminated from the North American plate?, J. Geophys. Res., 101, 11305-11315, 1996.
13. Takahashi, H. and K. Hirata, The 2000 Nemuro-Hanto-Oki earthquake, off eastern Hokkaido, Japan, and the high intraslab seismic activity in the southwestern Kuril Trench, J. Geophys. Res., 108(B4), 2178, doi:10.1029/2002JB001813, 2003.
14. Tanioka, Y., L. Ruff, and K. Satake, The great Kurile earthquake of October 4, 1994 tore the slab, Geophys. Res. Lett., 22, 1661-1664, 1995.
15. Tsuji, H., Y. Hatanaka, T. Sagiya, and M. Hashimoto, Coseismic crustal deformation from the 1994 Hokkaido-Toho-Oki earthquake monitored by a nationwide continuous GPS array in Japan, Geophys. Res. Lett., 22, 1669-1672, 1995.
16. Utsu, T., Large earthquakes near Hokkaido and the expectancy of the occurrence of a large earthquake off Nemuro, Rep. Coord. Comm. Earthq. Predict., 7, 7-13, 1972 (in Japanese).
17. Wessel, P. and W. H. F. Smith, Free software helps map and display data, Eos Trans. AGU, 72, 441, 445-446, 1991.