基于InSAR形变数据分析台湾纵谷断层南段现今运动特征

Abstract

Abstract: Based on segmented fault model and layered model, this paper use constraints from synthetic aperture radar interferometry (InSAR) deformation observations between 2007 and 2010, to invert spatial distribution of slip rate in the southern Longitudinal Valley Fault in eastern Taiwan, China, and then analyze the characteristics of fault movement. The results show that, the southern Longitudinal Valley fault movement is dominanted by thrust with less left-lateral component. The slip rate of the southern Longitudinal Valley Fault has a non-uniform spatial distribution, and it can be divided into two extremes, the maximum slip rate in the shallow part (0~15 km) is about 10 cm/a, located at the depth of about 2.5 km; and the maximum slip rate in the deep part (15~30 km) is about 21 cm/a, located at the depth of about 25 km. The inversion results are consistent with the deep slip rate estimated by repeating earthquake.

Key words: InSAR deformation, Fault movement, Inversion, The Longitudinal Valley fault

CLC Number:

P315.7

LI Hai-Yan, SHAO Zhi-Gang, MA Hong-Sheng, WANG Peng, DAI Zong-Hui. Current Movement Characteristics of the Southern Longitudinal Valley Fault Basedon InSAR Deformation Data[J]. EARTHQUAKE, 2016, 36(3): 25-33.

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Current Movement Characteristics of the Southern Longitudinal Valley Fault Basedon InSAR Deformation Data

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