气候变化领域集成服务门户(CCPortal): Study of the Interseismic Deformation and Locking Depth along the Xidatan-Dongdatan Segment of the East Kunlun Fault Zone, Northeast Qinghai-Tibet Plateau, Based on Sentinel-1 Interferometry

CCPortal

DOI	10.3390/rs15194666
	Study of the Interseismic Deformation and Locking Depth along the Xidatan-Dongdatan Segment of the East Kunlun Fault Zone, Northeast Qinghai-Tibet Plateau, Based on Sentinel-1 Interferometry
	Kang, Shuai; Ji, Lingyun; Zhu, Liangyu; Liu, Chuanjin; Zhang, Wenting; Li, Ning; Xu, Jing; Jiang, Fengyun; Saroli, Michele
发表日期	2023
EISSN	2072-4292
卷号	15 期号:19
英文摘要	The East Kunlun fault zone (EKFZ), located northeast of the Qinghai-Tibet Plateau, has experienced several strong earthquakes of magnitude seven or above since 1900. It is one of the most active fault systems and is characterized by left-lateral strike-slip. However, the Xidatan-Dongdatan segment (XDS) of the East Kunlun fault zone (EKFZ) has had no earthquakes for many years, and the Kunlun Mountains MS 8.1 earthquake has a stress loading effect on this segment, so it is widely regarded as a high-risk earthquake gap. To this end, we collected the Sentinel-1 data of the XDS of the EKFZ from July 2014 to July 2019 and obtained the high-precision interseismic deformation field by the Interferometric Synthetic Aperture Radar (InSAR) technique to obtain the slip rate and locking depth of the XDS of the EKFZ, and the seismic potential of the segment was analyzed. The results are as follows: (1) The LOS deformation field of the XDS of the EKFZ was obtained using Sentinel-1 data of ascending and descending orbits, which indicated that the XDS of the EKFZ is dominated by horizontal motion. Combined with the interference results, it is shown that the strike-slip rate dominates the deformation information of the XDS of the EKFZ. The deep strike-slip rate of the fault is about 6 mm/yr, the deep dip-slip rate is about 2 mm/yr, and the slip-deficit rate on the fault surface is about 6 mm/yr; (2) Combined with the spiral dislocation theory model, the slip rate of the XDS to Xiugou Basin of the EKFZ has a gradually increasing trend, with an average slip rate of 9.6 +/- 2.3 mm/yr and a locking depth of 29 +/- 5 m; (3) The stress accumulation is about 483 +/- 92 years in the XDS of the EKFZ, indicating that the cumulative elastic strain energy of the XDS can produce an MW 7.29 +/- 0.1 earthquake in the future.
关键词	East Kunlun fault zone Xidatan-Dongdatan segment InSAR interseismic deformation slip rate locking depth seismogenic depth
英文关键词	SLIP-RATE; SURFACE DEFORMATION; CRUSTAL DEFORMATION; STRAIN ACCUMULATION; LARGE EARTHQUAKES; COSEISMIC SLIP; MAJOR FAULTS; GPS; INSAR; RADAR
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001083669200001
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/283403
作者单位	China Earthquake Administration; The Second Monitoring & Application Center, CEA
推荐引用方式 GB/T 7714	Kang, Shuai,Ji, Lingyun,Zhu, Liangyu,et al. Study of the Interseismic Deformation and Locking Depth along the Xidatan-Dongdatan Segment of the East Kunlun Fault Zone, Northeast Qinghai-Tibet Plateau, Based on Sentinel-1 Interferometry[J],2023,15(19).
APA	Kang, Shuai.,Ji, Lingyun.,Zhu, Liangyu.,Liu, Chuanjin.,Zhang, Wenting.,...&Saroli, Michele.(2023).Study of the Interseismic Deformation and Locking Depth along the Xidatan-Dongdatan Segment of the East Kunlun Fault Zone, Northeast Qinghai-Tibet Plateau, Based on Sentinel-1 Interferometry.REMOTE SENSING,15(19).
MLA	Kang, Shuai,et al."Study of the Interseismic Deformation and Locking Depth along the Xidatan-Dongdatan Segment of the East Kunlun Fault Zone, Northeast Qinghai-Tibet Plateau, Based on Sentinel-1 Interferometry".REMOTE SENSING 15.19(2023).