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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >Crustal deformation in the central and southern Ryukyu Arc estimated from GPS data
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Crustal deformation in the central and southern Ryukyu Arc estimated from GPS data

机译：根据GPS数据估算琉球中南部和南部的地壳变形

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摘要

Deformation of the Ryukyu Arc in the period 1999–2001 was investigated on the basis of GPS data for horizontal velocity. The results show that deformation of the Ryukyu Arc is divided into three tectonic blocks, with all counter-clockwise rotation rates of between 18 and 195 nrad/yr. Extensional strain along the Ryukyu Arc is observed in all three blocks, being largest in the southwestern Ryukyu Arc. This suggests that southward bending of the arc occurs in the southwest associated with the arc–continent collision in Taiwan, resulting in clockwise block rotation of the Taiwan–Ryukyu junction. Thus, bending of the Ryukyu Arc appears to be caused by collision of the Luzon Arc with the Eurasian plate, and is likely to contribute to rifting of the Okinawa Trough.
机译：根据GPS水平速度数据，研究了1999-2001年琉球弧的变形情况。结果表明，琉球弧的变形分为三个构造块，所有逆时针旋转速率在18至195 nrad / yr之间。在所有三个街区都观察到沿琉球弧的拉伸应变，这是西南琉球弧最大的应变。这表明弧线向南弯曲发生在西南部，与台湾的弧-大陆碰撞有关，导致了台湾-琉球交界处的顺时针旋转。因此，琉球弧的弯曲似乎是由吕宋弧与欧亚板块的碰撞引起的，并且可能有助于冲绳海槽的裂谷。

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