气候变化领域集成服务门户(CCPortal): Analysis of groundwater flow through low-latitude alpine permafrost by model simulation: a case study in the headwater area of Yellow River on the Qinghai-Tibet Plateau, China

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DOI	10.1007/s10040-023-02597-7
	Analysis of groundwater flow through low-latitude alpine permafrost by model simulation: a case study in the headwater area of Yellow River on the Qinghai-Tibet Plateau, China
	Gao, Shuhui; Jin, Huijun; Wu, Qingbai; Bense, Victor F.; Luo, Dongliang; Wang, Qingfeng; Yang, Yuzhong; Chang, Wenwen
发表日期	2023
ISSN	1431-2174
EISSN	1435-0157
起始页码	789
结束页码	811
卷号	31 期号:3
英文摘要	Warming climate and thawing permafrost have profound impacts on groundwater flow regimes in cold regions because of the shrinkage or disappearance of the confining unit formed by the permafrost layers and improving hydraulic connections. Numerical simulations of coupled groundwater flow and heat transfer are often used to characterize the changing permafrost hydrogeology. In this study, a number of scenarios for different hydraulic gradients and lake-water depths have been used to simulate the concordant permafrost evolution and groundwater movement using a two- dimensional cylindrical coordinate model at time scales of decades to centuries in response to a warming climate. The model is applied to a representative headwater catchment in the south- central headwater area of the Yellow River on the northeastern Qinghai-Tibet Plateau, China. The results show that the presence and movement of groundwater and the deeper subpermafrost aquifer can substantially accelerate permafrost degradation, and the disappearance of residual permafrost at depth can result in the sudden establishment of deep groundwater flow paths. All hydrological impacts will become evident after the stabilization of the hydrothermal and flow fields at 100-200 years. The stable discharge rate of groundwater flow varies from 8.0 to 12.4 m(3) s(-1), and the stable velocity of groundwater flow varies from 1.6 x 10(-7) to 4.4 x 10(-7) m s(-1) under different scenarios within the model domain. The modeling results also demonstrate that flow velocity and discharge rate in local groundwater flow systems can be enhanced by an increased hydraulic conductivity, leading to an accelerated degradation of isolated permafrost bodies.
关键词	Permafrost Groundwater flow Hydraulic properties Model simulation China
英文关键词	DISSOLVED ORGANIC-CARBON; CONTINENTAL AREA; HEAT-TRANSPORT; PEAT PLATEAU; ACTIVE-LAYER; THAW; HYDROLOGY; CLIMATE; REGIONS; TEMPERATURE
WOS研究方向	Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000929947900001
来源期刊	HYDROGEOLOGY JOURNAL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283378
作者单位	Lanzhou Jiaotong University; Chinese Academy of Sciences; Northeast Forestry University - China; Northeast Forestry University - China; Wageningen University & Research
推荐引用方式 GB/T 7714	Gao, Shuhui,Jin, Huijun,Wu, Qingbai,et al. Analysis of groundwater flow through low-latitude alpine permafrost by model simulation: a case study in the headwater area of Yellow River on the Qinghai-Tibet Plateau, China[J],2023,31(3).
APA	Gao, Shuhui.,Jin, Huijun.,Wu, Qingbai.,Bense, Victor F..,Luo, Dongliang.,...&Chang, Wenwen.(2023).Analysis of groundwater flow through low-latitude alpine permafrost by model simulation: a case study in the headwater area of Yellow River on the Qinghai-Tibet Plateau, China.HYDROGEOLOGY JOURNAL,31(3).
MLA	Gao, Shuhui,et al."Analysis of groundwater flow through low-latitude alpine permafrost by model simulation: a case study in the headwater area of Yellow River on the Qinghai-Tibet Plateau, China".HYDROGEOLOGY JOURNAL 31.3(2023).