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Transient electromagnetic sounding for groundwater.

Geophysics

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Abstract

The feasibility of using the transient electromagnetic sounding (TS or TDEM) method for groundwater expoloration can be studied by means of numerical models. As examples of its applicability to groundwater exploration, we study 4 groundwater exploration problems; 1) mapping of alluvial fill and gravel zones over bedrock; 2) mapping of sand and gravel lenses in till; 3) detection of salt or brackish water interfaces in freshwater aquifers; and 4) determination of hydrostratigraphy. The TS method is best suited for locating conductive targets, and has very good vertical resolution. Unlike other sounding techniques where the receiver-transmitter array must be expanded to sound more deeply, the depth of investigation for the TS method is a function of the length of time the transient is recorded. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Transient electromagnetic sounding for groundwater.
Series title:
Geophysics
Volume
51
Issue:
4
Year Published:
1986
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
995
Last page:
1005
Number of Pages:
11