著者

松本 剛 木村 政昭 仲村 明子 青木 美澄

出版者

Tokyo Geographical Society

雑誌

地学雑誌 (ISSN:0022135X)

巻号頁・発行日

vol.105, no.3, pp.286-296, 1996-06-25 (Released:2009-11-12)

参考文献数

27

被引用文献数

6 11

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Precise topographic features at the two major structural boundaries in the Ryukyu Arc, Tokara Gap and Kerama Gap, revealed that there exists a ridge feature of the Ryukyu Arc as a saddle topography. The feature supports the idea recently proposed that a landbridge connecting the Chinese continent, Ryukyu Islands and Japanese Islands, is thought to have been subsided since Late Pleistocene. The saddle is offset by large-scale left-lateral normal faults both of which are related to the opening of the Okinawa Trough. These topographic features and geological structure together with the gravity anomaly and regional tectonics in the Ryukyu area suggest that a north-south tensional stress regime, due to the rolling buck of the Philippine Sea Plate at the Ryukyu Trench, has dominated in this region since last 20, 000 years.

著者

米陸軍航空隊編著 仲村明子 小野洋訳

出版者

光人社

巻号頁・発行日

1999

著者

仲村 明子

出版者

潮書房

雑誌

丸

巻号頁・発行日

vol.56, no.12, pp.39-45, 2003-12