Combined use of frequency-domain electromagnetic and electrical resistivity surveys to delineate near-lake groundwater flow in the semi-arid Nebraska Sand Hills, USA

Hydrogeology Journal
By: , and 

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Abstract

A frequency-domain electromagnetic (FDEM) survey can be used to select locations for the more quantitative and labor-intensive electrical resistivity surveys. The FDEM survey rapidly characterized the groundwater-flow directions and configured the saline plumes caused by evaporation from several groundwater-dominated lakes in the Nebraska Sand Hills, USA. The FDEM instrument was mounted on a fiberglass cart and towed by an all-terrain vehicle, covering about 25 km/day. Around the saline lakes, areas with high electrical conductivity are consistent with the regional and local groundwater flow directions. The efficacy of this geophysical approach is attributed to: the high contrast in electrical conductivity between various groundwater zones; the shallow location of the saline zones; minimal cultural interference; and relative homogeneity of the aquifer materials.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Combined use of frequency-domain electromagnetic and electrical resistivity surveys to delineate near-lake groundwater flow in the semi-arid Nebraska Sand Hills, USA
Series title Hydrogeology Journal
DOI 10.1007/s10040-010-0617-x
Volume 18
Issue 6
Year Published 2010
Language English
Publisher Springer
Contributing office(s) Toxic Substances Hydrology Program, OGW Branch of Geophysics
Description 7 p.
First page 1539
Last page 1545
Country United States
State Nebraska
Other Geospatial Nebraska Sand Hills