气候变化领域集成服务门户(CCPortal): Recent Tectonic Movement in the Western Tibetan Plateau Revealed by InSAR Measurements

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DOI	10.1109/JSTARS.2023.3318053
	Recent Tectonic Movement in the Western Tibetan Plateau Revealed by InSAR Measurements
	Zhao, Xin; Wang, Chao; He, Jiankun; Liang, Lianhui; Tang, Yixian; Zhang, Hong
发表日期	2023
ISSN	1939-1404
EISSN	2151-1535
起始页码	9551
结束页码	9564
卷号	16
英文摘要	The Tibetan Plateau is one of the broadest and highest collisional deformation belts in the world and its tectonic movement is crucial to the evolution of crustal structure and the formation of active geological disasters. Satellite Interferometric Synthetic Aperture Radar (InSAR) measurement is increasingly important in tectonic study because of its large-scale and continuous area-based observation with high spatial resolution. Based on small baseline subset InSAR time series methods, a longitudinal profile of InSAR line-of-sight (LOS) displacement rate map crossing the western Tibetan Plateau is generated using similar to 2061 interferograms created by similar to 1041 Sentinel-1 SAR acquisitions (2015-2021). Calibrated with available Global Navigation Satellite System (GNSS) measurements, the InSAR LOS displacement rate is used to explore the vertical tectonic movement, the fault slip rates, and the strain distribution across the western Tibetan Plateau. Results show that the slip rate of the Altyn Tagh fault along the northern edge of the profile reaches 12.3 +/- 0.2 mm/yr, while the fault slip rates inside the plateau are much lower. Associated with the fault motion, the calculated strain rate is also concentrated mainly around the plateau margins and is uniformly and smoothly distributed in the plateau interior where a low-strain region existed. More importantly, a subsidence rate of similar to 0-4 mm/yr is found in the interior of the western Tibetan Plateau, probably indicating the crustal thinning. Our new results attest that the introduction of the InSAR data with high spatial resolution helps to improve the strain rate field that may be unreasonably estimated only by GNSS data due to its sparse distribution.
关键词	Fault slip rates interferometric synthetic aperture radar (InSAR)strain tectonic movement
英文关键词	LOWER CRUSTAL RELAXATION; W 7.8 GORKHA; POSTSEISMIC DEFORMATION; INTERSEISMIC DEFORMATION; STRAIN ACCUMULATION; CENOZOIC TECTONICS; ACTIVE DEFORMATION; SOUTHERN TIBET; FAULT SYSTEM; SLIP RATE
WOS研究方向	Engineering, Electrical & Electronic ; Geography, Physical ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001091457500003
来源期刊	IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283894
作者单位	Wuhan University; Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Hunan University
推荐引用方式 GB/T 7714	Zhao, Xin,Wang, Chao,He, Jiankun,et al. Recent Tectonic Movement in the Western Tibetan Plateau Revealed by InSAR Measurements[J]. 中国科学院青藏高原研究所,2023,16.
APA	Zhao, Xin,Wang, Chao,He, Jiankun,Liang, Lianhui,Tang, Yixian,&Zhang, Hong.(2023).Recent Tectonic Movement in the Western Tibetan Plateau Revealed by InSAR Measurements.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,16.
MLA	Zhao, Xin,et al."Recent Tectonic Movement in the Western Tibetan Plateau Revealed by InSAR Measurements".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 16(2023).