Is the Ryukyu subduction zone in Japan coupled or decoupled?-The necessity of seafloor crustal deformation observation

被引：43

作者：

Ando, Masataka ^{[1
]}

Nakamura, Mamoru ^{[2
]}

Matsumoto, Takeshi ^{[2
]}

Furukawa, Masahide ^{[2
]}

Tadokoro, Keiichi ^{[3
]}

Furumoto, Muneyoshi ^{[3
]}

机构：

[1] Acad Sinica, Inst Earth Sci, Taipei, Taiwan

[2] Univ Ryukyus, Dept Earth & Mat Sci, Nishihara, Okinawa 90301, Japan

[3] Nagoya Univ, Grad Sch Environm Sci, Nagoya, Aichi 4648601, Japan

来源：

EARTH PLANETS AND SPACE | 2009年 / 61卷 / 09期

关键词：

Subduction zones; Ryukyu trench; decoupled/couple subduction; back-arc spreading; seafloor crustal deformation; EARTHQUAKES; RUPTURE; TSUNAMI; MODEL; GPS;

D O I：

10.1186/BF03352954

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The 2004 Sumatra-Andaman earthquake of M-w 9.3 occurred in a region where a giant earthquake seemed unlikely from the point of view of tectonics. This clearly implies that our current understanding of strain accumulation processes of large earthquakes at subduction zones needs to be reexamined. The Ryukyu subduction zone is one such zone since no large earthquake has been anticipated there for reasons similar those pertaining to the Sumatra-Andaman arc. Based on our analysis of historical earthquakes, plate motion, back-are spreading, and GPS observation along the Ryukyu trench, we highly recommend monitoring seafloor crustal deformation along this trench to clarify whether a large earthquake (M-w > 8) could potentially occur there in the future.

引用

页码：1031 / 1039

页数：9

共 38 条

[1] PHYSICAL SIZE OF TSUNAMIGENIC EARTHQUAKES OF THE NORTHWESTERN PACIFIC [J].