气候变化领域集成服务门户(CCPortal): A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada

CCPortal

DOI	10.1002/ppp.2111
	A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada
	Liu, Weibo; Fortier, Richard; Molson, John; Lemieux, Jean-Michel
通讯作者	Liu, WB (通讯作者)，Univ Laval, Dept Geol & Genie Geol, Quebec City, PQ, Canada.
发表日期	2021
ISSN	1045-6740
EISSN	1099-1530
起始页码	468
结束页码	483
卷号	32 期号:3
英文摘要	Icing occurs each winter along the floodplain of the Kuuguluk River in the continuous permafrost zone at Salluit in Nunavik (Quebec), Canada. The source of successive water overflows which thicken and enlarge this ice cover over time is suprapermafrost groundwater discharging from a talik below the riverbed. Electrical resistivity tomography was used to delineate the talik, while water level and temperature dataloggers were used to assess the thermo-hydraulic conditions of the riverbed. The mean annual riverbed temperature was 1.8 degrees C in 2016 while the mean annual air temperature was -6.0 degrees C. Hydraulic heads below the ice cover as high as 2.8 m and events of abrupt decreases in hydraulic head due to suprapermafrost groundwater overflow through cracks in the ice cover were monitored. An analytical solution based on beam mechanics theory was used to assess the water pressure-induced stresses which are sufficient to fracture the ice cover. A detailed conceptual model of the talik and icing dynamics is proposed to explain the cryo-hydrogeological processes taking place in this complex groundwater-river system. The groundwater pressure buildup in the talik during the winter is due to constricted flow of suprapermafrost groundwater in the talik. These results have implications for understanding the dynamics of river taliks and their use as potential water supplies in northern communities.
关键词	DISCONTINUOUS PERMAFROST DRAINAGE AUFEIS ICE
英文关键词	conceptual model; icing formation and cracking; river talik; suprapermafrost groundwater flow; talik constriction; water pressure buildup
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geology
WOS记录号	WOS:000661857600001
来源期刊	PERMAFROST AND PERIGLACIAL PROCESSES
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254781
作者单位	[Liu, Weibo; Fortier, Richard; Molson, John; Lemieux, Jean-Michel] Univ Laval, Dept Geol & Genie Geol, Quebec City, PQ, Canada; [Liu, Weibo; Fortier, Richard; Molson, John; Lemieux, Jean-Michel] Univ Laval, Ctr Etud Nord, Quebec City, PQ, Canada; [Liu, Weibo] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Frozen Soil Engn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Liu, Weibo,Fortier, Richard,Molson, John,et al. A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada[J]. 中国科学院西北生态环境资源研究院,2021,32(3).
APA	Liu, Weibo,Fortier, Richard,Molson, John,&Lemieux, Jean-Michel.(2021).A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada.PERMAFROST AND PERIGLACIAL PROCESSES,32(3).
MLA	Liu, Weibo,et al."A conceptual model for talik dynamics and icing formation in a river floodplain in the continuous permafrost zone at Salluit, Nunavik (Quebec), Canada".PERMAFROST AND PERIGLACIAL PROCESSES 32.3(2021).