DOI: 10.1002/grl.50282
论文题名: Resolving centimeter-scale flows in aquifers and their hydrostratigraphic controls
作者: Liu G. ; Knobbe S. ; Butler Jr. J.J.
刊名: Geophysical Research Letters
ISSN: 0094-9206
EISSN: 1944-8937
出版年: 2013
卷: 40, 期: 6 起始页码: 1098
结束页码: 1103
语种: 英语
英文关键词: distributed temperature sensing
; heat tracer
; solute transport
; subsurface flow
Scopus关键词: Distributed temperature sensing
; Groundwater contamination
; Groundwater fluxes
; heat tracer
; Heterogeneous aquifers
; Subsurface Flow
; Temperature response
; Vertical variation
; Aquifers
; Groundwater flow
; Hydraulic conductivity
; Hydrogeology
; Mining laws and regulations
; Solute transport
; Temperature sensors
; Groundwater resources
; aquifer pollution
; groundwater flow
; groundwater pollution
; heating
; hydraulic conductivity
; pollution monitoring
; resolution
; solute transport
; stratigraphy
; subsurface flow
; temperature effect
; velocity
英文摘要: The rate of groundwater flow has long been recognized as a critical control on solute transport in the subsurface. However, information about groundwater flux and its variability in space is rarely available, especially at the resolution required for investigations at sites of groundwater contamination. Recently, high-resolution information about vertical variations in groundwater flux was obtained using fiber-optic distributed temperature sensing technology to monitor the temperature response to active heating in a well. A series of vertical thermal profiles were acquired at a 1.4 cm resolution in a sand and gravel aquifer. These high-resolution profiles, which display many of the same general features as hydraulic conductivity (K) profiles obtained using multiple techniques at the same well, provide new insights into site hydrostratigraphy. In particular, the near-continuous profiles reveal the existence of thin zones of relatively high or low velocity that would be difficult to detect using other methods. These profiles also demonstrate that vertical variations in K may not be an accurate indicator of vertical variability in groundwater flux in highly heterogeneous aquifers. Key Points For the first time, high resolution groundwater flux variations are obtained Critical hydrostratigraphic controls on flow are identified Vertical K variations may not be a good indicator of flux variations. ©2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876893786&doi=10.1002%2fgrl.50282&partnerID=40&md5=50dc80e115604fafbff41c5e3d5cc9bc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6470
Appears in Collections: 气候减缓与适应
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作者单位: Kansas Geological Survey, University of Kansas, Lawrence, KS 66047, United States
Recommended Citation:
Liu G.,Knobbe S.,Butler Jr. J.J.. Resolving centimeter-scale flows in aquifers and their hydrostratigraphic controls[J]. Geophysical Research Letters,2013-01-01,40(6).