According to all of the results, we can concluded that, 1 the seismic sequences developed in the west shelf, trough basin and Ryukyu Island arc are different.
通过分析可以得出如下初步结论：1海槽南部西侧陆架、盆地内部以及琉球岛弧岛坡地震层序是不同的。
These characteristics reflect that couplings between the upper arc and the subduction slab of the Ryukyu trench are weak relative to other common trenches, and themselves weaken toward to the south.
这些特点说明琉球沟弧系上覆板块与俯冲板块的耦合比其他沟弧系弱，而琉球海沟本身又往南趋弱。
Okinawa ocean trough and Ryukyu island arc were formed in late Miocene.
中新世晚期，冲绳海槽和疏球岛弧形成。
The east slope is slow, and is the inserting side from the northwest Philippine Plate into the Ryukyu Island Arc, connecting with the ocean basin.
东坡（洋坡）缓，是西北菲律宾海板块向琉球岛弧下插的一边，与大洋盆地相连。
The research result on element isotopes shows that the characteristic of the crust in the Okinawa Trough area is different from that in East China area and the Ryukyu Island Arc area.
元素—同位素研究表明：它不同于中国东部，与琉球岛弧地区的特点也不相同。
The research result on element isotopes shows that the characteristic of the crust in the Okinawa Trough area is different from that in East China area and the Ryukyu Island Arc area.
元素—同位素研究表明：它不同于中国东部，与琉球岛弧地区的特点也不相同。
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