气候变化领域集成服务门户(CCPortal): Creep features and mechanism of active-layer detachment slide on the Qinghai-Tibet Plateau by InSAR

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DOI	10.1016/j.catena.2023.107782
	Creep features and mechanism of active-layer detachment slide on the Qinghai-Tibet Plateau by InSAR
	Wang, Fei; Wen, Zhi; Gao, Qiang; Yu, Qihao; Li, Desheng; Chen, Liangzhi
发表日期	2024
ISSN	0341-8162
EISSN	1872-6887
卷号	237
英文摘要	An active-layer detachment slide (ALDS) occurred on September 21, 2018, in the Fenghuoshan mountains of the Qinghai-Tibet Plateau (QTP) (34 degrees 39.1 ' N, 92 degrees 53.5 ' E). With the Sentinel-1A image from Copernicus Open Access Hub, we use small baseline subset to achieve the time series deformation map to analyze the thermo-spatial creep feature, motion pattern, trigger mechanism, and correlation of environmental changes in the ALDS. The SBAS (the Small Baselines Subset) results show that the trailing part of ALDS has the largest downward deformation rate; however, the leading area was small, and the creep feature shows a clear seasonal change corresponding to the freeze-thaw cycle. We also divide the motion pattern into three stages: moderate creep, steady creep, and rapid collapse, based on the deformation rate. Meteorological observation and reanalysis data, as well as borehole data, show that heavy precipitation in the summer of 2017 and 2018 promote the formation of underground ice, while high air temperatures allow the thaw plane to reach the ice-rich zone, and confined water generated by the two-way freezing process result in ALDS. Moreover, there exists a temporal delay of approximately one month in the association between deformation rate and both precipitation and temperature. Furthermore, there is a clear correlation between variations in thawing depth and deformation, which serves as the primary catalyst for ALDS in permafrost regions. Finally, we also identify that ALDS is a mixed-type landslide and that cumulative deformation and creep damage play the main roles in triggering ALDS.
关键词	Active-layer detachment slide InSAR Qinghai-Tibet Plateau Creep feature
英文关键词	CONTINUOUS PERMAFROST; THAW SLUMP; GROUND ICE; SAR; ALGORITHM; FAILURES; CLIMATE; INTERFEROMETRY; DEGRADATION; LANDSLIDES
WOS研究方向	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:001152478700001
来源期刊	CATENA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282717
作者单位	Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Swiss Federal Institutes of Technology Domain; Swiss Federal Institute for Forest, Snow & Landscape Research
推荐引用方式 GB/T 7714	Wang, Fei,Wen, Zhi,Gao, Qiang,et al. Creep features and mechanism of active-layer detachment slide on the Qinghai-Tibet Plateau by InSAR[J],2024,237.
APA	Wang, Fei,Wen, Zhi,Gao, Qiang,Yu, Qihao,Li, Desheng,&Chen, Liangzhi.(2024).Creep features and mechanism of active-layer detachment slide on the Qinghai-Tibet Plateau by InSAR.CATENA,237.
MLA	Wang, Fei,et al."Creep features and mechanism of active-layer detachment slide on the Qinghai-Tibet Plateau by InSAR".CATENA 237(2024).