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Title: Geophysical survey of cavernous areas, Patoka Dam, Indiana
Authors: United States. Army. Corps of Engineers. Louisville District.
Cooper, Stafford S.
Bieganousky, Wayne A.
Keywords: Acoustic surveys
Solution phenomena
Subsurface exploration
Infrared mapping
Underground cavities
Geophysical surveys
Resistivity surveys
Patoka Dam
Patoka River
Issue Date: Jan-1978
Publisher: Soils and Pavements Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Description: Miscellaneous Paper
Abstract: Three selected geophysical methods, i.e., acoustic, resistivity, and infrared techniques were applied to the problem of solution cavity detection and delineation at Patoka dam site. The infrared technique was abandoned after early efforts indicated it would not prove successful in this application. Both the acoustic and resistivity methods, however, yielded results. The general severity of solutioning activity could be surmised from the resistivity profile produced using the Wenner electrode array. Specific features were further defined using a modification of the Bristow resistivity survey. These features, however, have not been verified by exploratory drilling thus far. The acoustic technique employed was very successful in delineating the trend of subterranean features for a distance of approximately 200 feet from the location of the energy source. Exploratory drilling proved the existence of several features indicated by the acoustic technique. A comparison of the electrical resistivity and acoustic results was very favorable.
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