气候变化领域集成服务门户(CCPortal): Distribution and Recurrence of Warming-Induced Retrogressive Thaw Slumps on the Central Qinghai-Tibet Plateau

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DOI	10.1029/2022JF007047
	Distribution and Recurrence of Warming-Induced Retrogressive Thaw Slumps on the Central Qinghai-Tibet Plateau
	Yang, Dongdong; Qiu, Haijun; Ye, Bingfeng; Liu, Ya; Zhang, Juanjuan; Zhu, Yaru
发表日期	2023
ISSN	2169-9003
EISSN	2169-9011
卷号	128 期号:8
英文摘要	Retrogressive thaw slumps (RTSs) have become a dominant geomorphic event in permafrost regions due to the modern climate change. However, the roles of topographic, vegetation, and soil factors in influencing the spatial distribution and recurrence of RTSs remain not fully understood. Here, we identified the formation and recurrence of 459 RTSs during 2008-2021 using satellite images of the central Qinghai-Tibet Plateau (Northwest of the Beiluhe Basin, 239 km(2)). We found that the topographic and environmental attributes of the RTSs exhibited strong correlations with the variation in the RTS density. The RTS-affected areas had a higher slope, elevation, relative slope position, normalized difference vegetation index, soil water content, and lower soil bulk density than other landscapes. Regarding the influence of topographic and environmental attributes on the activity status of RTSs during 2018-2020, we found that the higher slope, elevation, and soil water content were advantageous for the activity of the RTSs. The RTSs with larger sizes and presenting an elongated shape were more likely to be active. Additionally, we examined the variation of the headwall shape of RTSs based on the fractal dimension and UAV-based orthophoto. We found that the headwall shape of RTSs becomes more complicated due to the small-scale thawing of ice-rich permafrost, which may further induce subsequent thaw slumping. Higher air temperature triggers new RTSs, and increased precipitation may be responsible for the further activity of RTSs. Our findings can enhance our understanding of the development pattern and mechanism of RTSs in permafrost regions.
关键词	landslides distribution thaw slumps risk assessment Qinghai-Tibet Plateau legacy effect
英文关键词	ENGINEERING CORRIDOR; PERMAFROST REGIONS; SHALLOW LANDSLIDES; PATH DEPENDENCY; THERMAL REGIME; RESOLUTION; TERRAIN; ISLAND; COAST; MAP
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:001040388200001
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282789
作者单位	Northwest University Xi'an; Northwest University Xi'an
推荐引用方式 GB/T 7714	Yang, Dongdong,Qiu, Haijun,Ye, Bingfeng,et al. Distribution and Recurrence of Warming-Induced Retrogressive Thaw Slumps on the Central Qinghai-Tibet Plateau[J],2023,128(8).
APA	Yang, Dongdong,Qiu, Haijun,Ye, Bingfeng,Liu, Ya,Zhang, Juanjuan,&Zhu, Yaru.(2023).Distribution and Recurrence of Warming-Induced Retrogressive Thaw Slumps on the Central Qinghai-Tibet Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE,128(8).
MLA	Yang, Dongdong,et al."Distribution and Recurrence of Warming-Induced Retrogressive Thaw Slumps on the Central Qinghai-Tibet Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 128.8(2023).