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Time-lapse electrical resistivity imaging of solute transport in a karst conduit

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Time-lapse electrical resistivity imaging of solute transport in a karst conduit. / Sawyer, Audrey; Zhu, Junfeng; Currens, James; Atcher, Clay; Binley, Andrew.

In: Hydrological Processes, Vol. 29, No. 23, 15.11.2015, p. 4968-4976.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Sawyer, A, Zhu, J, Currens, J, Atcher, C & Binley, A 2015, 'Time-lapse electrical resistivity imaging of solute transport in a karst conduit', Hydrological Processes, vol. 29, no. 23, pp. 4968-4976. https://doi.org/10.1002/hyp.10622

APA

Sawyer, A., Zhu, J., Currens, J., Atcher, C., & Binley, A. (2015). Time-lapse electrical resistivity imaging of solute transport in a karst conduit. Hydrological Processes, 29(23), 4968-4976. https://doi.org/10.1002/hyp.10622

Vancouver

Sawyer A, Zhu J, Currens J, Atcher C, Binley A. Time-lapse electrical resistivity imaging of solute transport in a karst conduit. Hydrological Processes. 2015 Nov 15;29(23):4968-4976. https://doi.org/10.1002/hyp.10622

Author

Sawyer, Audrey ; Zhu, Junfeng ; Currens, James ; Atcher, Clay ; Binley, Andrew. / Time-lapse electrical resistivity imaging of solute transport in a karst conduit. In: Hydrological Processes. 2015 ; Vol. 29, No. 23. pp. 4968-4976.

Bibtex

@article{eaa03a870ae5412bb44beffe52d4e9af,
title = "Time-lapse electrical resistivity imaging of solute transport in a karst conduit",
abstract = "The use of electrical resistivity surveys to locate karst conduits has shown mixed success. However, time-lapse electrical resistivity imaging combined with salt injection improves conduit detection and can yield valuable insight into solute transport behaviour. We present a proof of concept above a known karst conduit in the Kentucky Horse Park (Lexington, Kentucky). A salt tracer solution was injected into a karst window over a 45-min interval, and repeat resistivity surveys were collected every 20 min along a 125-m transect near a monitoring well approximately 750m downgradient from the injection site. In situ fluid conductivity measurements in the well peaked at approximately 25% of the initial value about 3 h after salt injection. Time-lapse electrical resistivity inversions show two broad zones at the approximate conduit depth where resistivity decreased and then recovered in general agreement with in situ measurements. Combined salt injection and electrical resistivity imaging are a promising tool for locating karst conduits. The method is also useful for gaining insight into conduit geometry and could be expanded to include multiple electrical resistivity transects.",
keywords = "karst, groundwater, electrical resistivity , hydrogeophysics, tracer",
author = "Audrey Sawyer and Junfeng Zhu and James Currens and Clay Atcher and Andrew Binley",
year = "2015",
month = nov,
day = "15",
doi = "10.1002/hyp.10622",
language = "English",
volume = "29",
pages = "4968--4976",
journal = "Hydrological Processes",
issn = "0885-6087",
publisher = "John Wiley and Sons Ltd",
number = "23",

}

RIS

TY - JOUR

T1 - Time-lapse electrical resistivity imaging of solute transport in a karst conduit

AU - Sawyer, Audrey

AU - Zhu, Junfeng

AU - Currens, James

AU - Atcher, Clay

AU - Binley, Andrew

PY - 2015/11/15

Y1 - 2015/11/15

N2 - The use of electrical resistivity surveys to locate karst conduits has shown mixed success. However, time-lapse electrical resistivity imaging combined with salt injection improves conduit detection and can yield valuable insight into solute transport behaviour. We present a proof of concept above a known karst conduit in the Kentucky Horse Park (Lexington, Kentucky). A salt tracer solution was injected into a karst window over a 45-min interval, and repeat resistivity surveys were collected every 20 min along a 125-m transect near a monitoring well approximately 750m downgradient from the injection site. In situ fluid conductivity measurements in the well peaked at approximately 25% of the initial value about 3 h after salt injection. Time-lapse electrical resistivity inversions show two broad zones at the approximate conduit depth where resistivity decreased and then recovered in general agreement with in situ measurements. Combined salt injection and electrical resistivity imaging are a promising tool for locating karst conduits. The method is also useful for gaining insight into conduit geometry and could be expanded to include multiple electrical resistivity transects.

AB - The use of electrical resistivity surveys to locate karst conduits has shown mixed success. However, time-lapse electrical resistivity imaging combined with salt injection improves conduit detection and can yield valuable insight into solute transport behaviour. We present a proof of concept above a known karst conduit in the Kentucky Horse Park (Lexington, Kentucky). A salt tracer solution was injected into a karst window over a 45-min interval, and repeat resistivity surveys were collected every 20 min along a 125-m transect near a monitoring well approximately 750m downgradient from the injection site. In situ fluid conductivity measurements in the well peaked at approximately 25% of the initial value about 3 h after salt injection. Time-lapse electrical resistivity inversions show two broad zones at the approximate conduit depth where resistivity decreased and then recovered in general agreement with in situ measurements. Combined salt injection and electrical resistivity imaging are a promising tool for locating karst conduits. The method is also useful for gaining insight into conduit geometry and could be expanded to include multiple electrical resistivity transects.

KW - karst

KW - groundwater

KW - electrical resistivity

KW - hydrogeophysics

KW - tracer

U2 - 10.1002/hyp.10622

DO - 10.1002/hyp.10622

M3 - Journal article

VL - 29

SP - 4968

EP - 4976

JO - Hydrological Processes

JF - Hydrological Processes

SN - 0885-6087

IS - 23

ER -