Potential tsunamigenic faults of the 2011 off the Pacific coast of Tohoku Earthquake

被引：65

作者：

Tsuji, Takeshi ^{[1
]}

Ito, Yoshihiro ^{[2
]}

Kido, Motoyuki ^{[2
]}

Osada, Yukihito ^{[2
]}

Fujimoto, Hiromi ^{[2
]}

Ashi, Juichiro ^{[3
]}

Kinoshita, Masataka ^{[4
]}

Matsuoka, Toshifumi ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Nishikyo Ku, Kyoto 6158540, Japan

[2] Tohoku Univ, Grad Sch Sci, Aoba Ku, Sendai, Miyagi 9818578, Japan

[3] Univ Tokyo, Atmosphere & Ocean Res Inst, Kashiwa, Chiba 2778564, Japan

[4] Japan Agcy Marine Earth Sci & Technol JAMSTEC, Inst Res Earth Evolut IFREE, Yokosuka, Kanagawa 2370061, Japan

来源：

EARTH PLANETS AND SPACE | 2011年 / 63卷 / 07期

关键词：

2011 Tohoku-Oki Earthquake; tsunamigenic faults; seismic reflection data; seafloor observation; cold-seep communities; high scarp; JAPAN TRENCH MARGIN; ACCRETIONARY;

D O I：

10.5047/eps.2011.05.028

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Faults related to the tsunamigenic 2011 Tohoku-Oki Earthquake (M-w 9.0) were investigated by using multi-channel seismic reflection data acquired in 1999 and submersible seafloor observations from 2008. The location of the fault system interpreted in the seismic reflection profile is distributed around the area with largest slip and tsunami induction of the 2011 event. Cold-seep communities along the trace of the branch reverse fault and a high scarp associated with the trace of a normal fault suggest current activity on these faults. We interpret the fault system in the seismic profile as a shallow extension of the seismogenic fault that may have contributed to the resulting huge tsunami.

引用

页码：831 / 834

页数：4

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