Application of a towed time-domain electromagnetic (tTEM) imaging system in Jamestown, North Dakota

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Abstract

Time-Domain Electromagnetic (EM) methods have been used for decades in support of groundwater investigations. A new towed Time-Domain EM system called “tTEM”, designed by Aarhus University, is being tested and evaluated under a collaborative research agreement with the U.S. Geological Survey (USGS). The tTEM system is rapid and efficient, providing high-resolution, nearly continuous profiles of subsurface resistivity useful for hydrostratigraphic mapping and assessment of aquifer materials. Here we provide an example of a tTEM survey conducted in Jamestown, North Dakota (ND). The purpose of the ND investigation was to assess tTEM the ability of the system to map coarse-grained materials within the Spiritwood Aquifer. The tTEM survey results compare favorably with the results of an airborne EM (AEM) survey previously conducted in the area and to lithologic logs from nearby boreholes.

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Publication type Conference Paper
Publication Subtype Conference Paper
Title Application of a towed time-domain electromagnetic (tTEM) imaging system in Jamestown, North Dakota
DOI 10.4133/sageep.32-071
Year Published 2019
Language English
Publisher Environmental & Engineering Geophysical Society
Contributing office(s) WMA - Earth System Processes Division
Description 4 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title Symposium on the application of geophysics to engineering and environmental problems proceedings
First page 322
Last page 325
Conference Title Symposium on the Application of Geophysics to Engineering and Environmental Problems
Conference Location Portland, Oregon
Conference Date March 17-21, 2019
Country United States
State North Dakota
City Jamestown
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