DOI: 10.1002/2014GL059579
论文题名: Field identification of groundwater flow systems and hydraulic traps in drainage basins using a geophysical method
作者: Jiang X.-W. ; Wan L. ; Wang J.-Z. ; Yin B.-X. ; Fu W.-X. ; Lin C.-H.
刊名: Geophysical Research Letters
ISSN: 0094-10146
EISSN: 1944-9877
出版年: 2014
卷: 41, 期: 8 起始页码: 2812
结束页码: 2819
语种: 英语
英文关键词: geophysical method
; groundwater flow system
; hydraulic trap
Scopus关键词: Aquifers
; Continuous time systems
; Crystalline rocks
; Magnetotellurics
; Ore deposits
; Apparent resistivity
; Geophysical methods
; Groundwater exploration
; Groundwater flow systems
; Groundwater salinities
; Groundwater-fed rivers
; Hydraulic traps
; Magnetotelluric methods
; Groundwater resources
; aquifer
; drainage basin
; electrical resistivity
; flow pattern
; groundwater abstraction
; groundwater flow
; hydrological modeling
; magnetotelluric method
; ore body
; porosity
; salinity
; China
; Nei Monggol
; Ordos Plateau
英文摘要: Groundwater flow systems and stagnant zones in drainage basins are critical to a series of geologic processes. Unfortunately, the difficulty of mapping flow system boundaries and no field example of detected stagnant zones restrict the application of the concept of nested flow systems. By assuming the variation in bulk resistivity of an aquifer with uniform porosity is mainly caused by groundwater salinity, the magnetotelluric technique is used to obtain the apparent resistivity of a profile across a groundwater-fed river in the Ordos Plateau, China. Based on the variations in apparent resistivity of the Cretaceous sandstone aquifer, the basin-bottom hydraulic trap below the river has been detected for the first time, and its size is found to be large enough for possible deposition of large ore bodies. The boundaries between local and regional flows have also been identified, which would be useful for groundwater exploration and calibration of large-scale groundwater models. Key Points The hydraulic trap with higher TDS has been identified for the first time The continuous boundaries of local and regional flow systems have been mapped The magnetotelluric method is useful for large-scale flow system studies ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899042205&doi=10.1002%2f2014GL059579&partnerID=40&md5=987d0e09138ea3990b7b29a4202f2a08
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7410
Appears in Collections: 气候减缓与适应
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作者单位: MOE Key Laboratory of Groundwater Circulation and Evolution, China University of Geosciences, Beijing, China
Recommended Citation:
Jiang X.-W.,Wan L.,Wang J.-Z.,et al. Field identification of groundwater flow systems and hydraulic traps in drainage basins using a geophysical method[J]. Geophysical Research Letters,2014-01-01,41(8).