globalchange  > 气候变化与战略
DOI: 10.5194/hess-22-4381-2018
论文题名:
Groundwater origin; flow regime and geochemical evolution in arid endorheic watersheds: A case study from the Qaidam Basin; northwestern China
作者: Xiao Y.; Shao J.; Frape S.K.; Cui Y.; Dang X.; Wang S.; Ji Y.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2018
卷: 22, 期:8
起始页码: 4381
结束页码: 4400
语种: 英语
Scopus关键词: Aquifers ; Calcite ; Chloride minerals ; Groundwater flow ; Groundwater resources ; Gypsum ; Hierarchical systems ; Hydrogeology ; Ion exchange ; Isotopes ; Lithology ; Magnesium compounds ; Potassium compounds ; Silicates ; Sodium chloride ; Stratigraphy ; Watersheds ; Weathering ; Geochemical evolution ; Groundwater chemistry ; Groundwater flow systems ; Groundwater origins ; Mineral dissolution ; Mineral precipitation ; Numerical approaches ; Silicate weathering ; Hydrochemistry ; dissolution ; evaporation ; flow pattern ; geochemical survey ; groundwater flow ; hydrogeochemistry ; ion exchange ; mineral deposit ; numerical model ; silicate ; water quality ; watershed ; weathering ; China ; Golmud River ; Qaidam Basin ; Qinghai ; Qinghai-Xizang Plateau
英文摘要: Groundwater origin, flow and geochemical evolution in the Golmud River watershed of the Qaidam Basin was assessed using hydrogeochemical, isotopic and numerical approaches. The stable isotopic results show groundwater in the basin originates from precipitation and meltwater in the mountainous areas of the Tibetan Plateau. Modern water was found in the alluvial fan and shallow aquifers of the loess plain. Deep confined groundwater was recharged by paleowater during the late Pleistocene and Holocene under a cold climate. Groundwater in the low-lying depression of the central basin is composed of paleobrines migrated from the western part of the basin due to tectonic uplift in the geological past. Groundwater chemistry is controlled by mineral dissolution (halite, gypsum, anhydrite, mirabilite), silicate weathering, cation exchange, evaporation and mineral precipitation (halite, gypsum, anhydrite, aragonite, calcite, dolomite) and varies from fresh to brine with the water types evolving from HCO3 Cl-Ca M Na to Cl-Na, Cl-K-Na and Cl-Mg type along the flow path. Groundwater flow patterns are closely related to stratigraphic control and lithological distribution. Three hierarchical groundwater flow systems, namely local, intermediate and regional, were identified using numerical modeling. The quantity of water discharge from these three systems accounts for approximately 83 14 and 3 respectively, of the total groundwater quantity of the watershed. This study can enhance the understanding of groundwater origin, circulation and evolution in the Qaidam Basin as well as other arid endorheic watersheds in northwestern China and elsewhere worldwide. © Author(s) 2018.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163221
Appears in Collections:气候变化与战略

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作者单位: Xiao, Y., Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China; Shao, J., School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China; Frape, S.K., Department of Earth and Environmental Sciences, University of Waterloo, Waterloo, N2L 3G1, Canada; Cui, Y., School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing, 100083, China; Dang, X., Xi'An Center of Geological Survey, China Geological Survey, Xi'an, 710054, China, Key Laboratory of Groundwater and Ecology in Arid and Semi-arid Regions, China Geological Survey, Xi'an, 710054, China; Wang, S., Key Lab of Geo-environment of Qinghai Province, Xining, 810007, China, Bureau of Qinghai Environmental Geological Prospecting, Xining, 810007, China; Ji, Y., Lunan Geo-Engineering Exploration Institute of Shandong Province, Yanzhou, 272100, China

Recommended Citation:
Xiao Y.,Shao J.,Frape S.K.,et al. Groundwater origin; flow regime and geochemical evolution in arid endorheic watersheds: A case study from the Qaidam Basin; northwestern China[J]. Hydrology and Earth System Sciences,2018-01-01,22(8)
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