Crustal Movement and Seismic Activity in Eastern Taiwan.
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概要
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Horizontal movement of the Coastal Range relative to the Longitudinal Valley, a probable arc-continent collision boundary in eastern Taiwan, is reanalyzed using the horizontal strain in this area. The present analysis shows that the range is moving toward the direction of N5°W with the speed of 4-5 cm/yr. This result is different from that of our former calculation, but is accordant with the anaysis of retriangulation data by BIQ (1984). The new obtained direction of the moving vector of the Coastal Range is different significantly from that of the Philippine Sea plate, and this difference is considered to produce a large shear strain in the neibouring oceanic plate. The northward subduction of the Philippine Sea plate seen just off the northeastern coast of Taiwan is harmonious with the northward displacement of the Coastal Range. The characteristics of earthquakes in Taiwan area are also explainable with the shearing stress in the plate resulted from the movement of the Coastal Range.
- 日本測地学会の論文
日本測地学会 | 論文
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