气候变化领域集成服务门户(CCPortal): Present-Day Crustal Deformation of the Northwestern Tibetan Plateau Based on InSAR Measurements

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DOI	10.3390/rs15215195
	Present-Day Crustal Deformation of the Northwestern Tibetan Plateau Based on InSAR Measurements
	Zhang, Guifang; Qu, Chunyan; Shan, Xinjian; Song, Xiaogang; Zhang, Yingfeng; Li, Yanchuan
发表日期	2023
EISSN	2072-4292
卷号	15 期号:21
英文摘要	In this study, The ENVISAT advanced synthetic aperture radar observations from 2003 to 2010 of a descending track covering an area of 100 km x 300 km were used to map the surface velocity field in northwestern Tibet. The derived line-of-sight (LOS) velocity map revealed that interseismic deformation was mainly located on the Altyn Tagh Fault (ATF) and other four immature subsidiary faults (i.e., Tashikule Fault, Muzitage-jingyuhe Fault, Heishibeihu Fault, and Woniuhu Fault). A 2D elastic screw dislocation model was used to interpret the interferometric synthetic aperture radar (InSAR) velocity profiles, which revealed the following results. (a) The oblique movement is partitioned between left-lateral slip at a rate of 6.3 +/- 1.4 mm/y on the ATF and 5.9 +/- 2.8 mm/y on the subsidiary faults. The low slip rate of the ATF indicates that the ATF does not drive the northeastward extrusion of material, with most of the extrusion occurring in the eastern interior of the plateau and the four subsidiary faults localizing the oblique convergence partitioned in the west. This can reasonably explain why catastrophic earthquakes and rapid slip do not occur all over along the ATF. (b) Based on the four subsidiary faults accommodating the oblique movement and the traces amalgamation with the EKLF (delineated Bayan Har plate boundary to the northeast), we concluded guardedly that the four subsidiary faults are the evoluting plate boundary of the Bayan Har block to the northwest. (c) The Tanan top-up structure had an uplift rate of similar to 0.6 mm/y at the south of the Tarim Basin.
关键词	crustal deformation Tibetan Plateau InSAR displacement modeling
英文关键词	ALTYN-TAGH FAULT; LATE QUATERNARY; ACTIVE DEFORMATION; SLIP RATE; CHINA; KINEMATICS; NORTHERN; SYSTEM; STRAIN; RATES
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001103308400001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283726
作者单位	China Earthquake Administration
推荐引用方式 GB/T 7714	Zhang, Guifang,Qu, Chunyan,Shan, Xinjian,et al. Present-Day Crustal Deformation of the Northwestern Tibetan Plateau Based on InSAR Measurements[J],2023,15(21).
APA	Zhang, Guifang,Qu, Chunyan,Shan, Xinjian,Song, Xiaogang,Zhang, Yingfeng,&Li, Yanchuan.(2023).Present-Day Crustal Deformation of the Northwestern Tibetan Plateau Based on InSAR Measurements.REMOTE SENSING,15(21).
MLA	Zhang, Guifang,et al."Present-Day Crustal Deformation of the Northwestern Tibetan Plateau Based on InSAR Measurements".REMOTE SENSING 15.21(2023).