气候变化领域集成服务门户(CCPortal): Three-Dimensional Numerical Modeling of Ground Ice Ablation in a Retrogressive Thaw Slump and Its Hydrological Ecosystem Response on the Qinghai-Tibet Plateau, China

CCPortal

DOI	10.1007/s13753-023-00503-z
	Three-Dimensional Numerical Modeling of Ground Ice Ablation in a Retrogressive Thaw Slump and Its Hydrological Ecosystem Response on the Qinghai-Tibet Plateau, China
	Niu, Fujun; Jiao, Chenglong; Luo, Jing; He, Junlin; He, Peifeng
发表日期	2023
ISSN	2095-0055
EISSN	2192-6395
英文摘要	Retrogressive thaw slumps (RTSs), which frequently occur in permafrost regions of the Qinghai-Tibet Plateau (QTP), China, can cause significant damage to the local surface, resulting in material losses and posing a threat to infrastructure and ecosystems in the region. However, quantitative assessment of ground ice ablation and hydrological ecosystem response was limited due to a lack of understanding of the complex hydro-thermal process during RTS development. In this study, we developed a three-dimensional hydro-thermal coupled numerical model of a RTS in the permafrost terrain at the Beilu River Basin of the QTP, including ice-water phase transitions, heat exchange, mass transport, and the parameterized exchange of heat between the active layer and air. Based on the calibrated hydro-thermal model and combined with the electrical resistivity tomography survey and sample analysis results, a method for estimating the melting of ground ice was proposed. Simulation results indicate that the model effectively reflects the factual hydro-thermal regime of the RTS and can evaluate the ground ice ablation and total suspended sediment variation, represented by turbidity. Between 2011 and 2021, the maximum simulated ground ice ablation was in 2016 within the slump region, amounting to a total of 492 m3, and it induced the reciprocal evolution, especially in the headwall of the RTS. High ponding depression water turbidity values of 28 and 49 occurred in the thawing season in 2021. The simulated ground ice ablation and turbidity events were highly correlated with climatic warming and wetting. The results offer a valuable approach to assessing the effects of RTS on infrastructure and the environment, especially in the context of a changing climate.
关键词	Permafrost Retrogressive thaw slump Ground ice ablation Hydrological ecosystem Qinghai-Tibet Plateau
英文关键词	SHORT-TERM ABLATION; NORTHWEST-TERRITORIES; THERMOKARST LAKE; PERMAFROST; DISTURBANCE; VEGETATION; FLOW
WOS研究方向	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS记录号	WOS:001060053600001
来源期刊	INTERNATIONAL JOURNAL OF DISASTER RISK SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282951
作者单位	South China University of Technology; South China University of Technology; Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Niu, Fujun,Jiao, Chenglong,Luo, Jing,et al. Three-Dimensional Numerical Modeling of Ground Ice Ablation in a Retrogressive Thaw Slump and Its Hydrological Ecosystem Response on the Qinghai-Tibet Plateau, China[J],2023.
APA	Niu, Fujun,Jiao, Chenglong,Luo, Jing,He, Junlin,&He, Peifeng.(2023).Three-Dimensional Numerical Modeling of Ground Ice Ablation in a Retrogressive Thaw Slump and Its Hydrological Ecosystem Response on the Qinghai-Tibet Plateau, China.INTERNATIONAL JOURNAL OF DISASTER RISK SCIENCE.
MLA	Niu, Fujun,et al."Three-Dimensional Numerical Modeling of Ground Ice Ablation in a Retrogressive Thaw Slump and Its Hydrological Ecosystem Response on the Qinghai-Tibet Plateau, China".INTERNATIONAL JOURNAL OF DISASTER RISK SCIENCE (2023).