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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Magna Scan: A
Geophysical
Tool
for Environmental Site Assessments
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By
Development of new supplies of water, conservation of
water, reuse of waste water, and clean-up and prevention of
pollution are at an all-time high demand by all sectors of the
population. Today, most of the technology applied to these
efforts has been limited to drilling exploratory wells, generating
subsurface geologic pictures from the well logs, setting
monitor wells, and performing hydrological pumping tests
and chemical analysis of fluid samples. This approach alone
is quite costly compared to an integrated approach of
combining this data with geophysical
surveys.
The addition of geophysical
surveys to subsurface
analysis for natural resources has proved to reduce exploration
costs and time by as much as 30 to 80 percent.
Properly performed electrical resistivity surveys will likewise
reduce the costs and time to perform subsurface analysis
for Water Resources Management.
MagnaScan, since its inception in August of 1988, set out to bring electrical-resistivity tomography to the Water Resources Management with its OFFSET LOG and VECTOR SCAN techniques. By August of 1991, some 20 sites in California, Texas, Oklahoma, and Kansas had been successfully investigated, demonstrating the great cost and time effectiveness of these techniques. MagnaScan was successful because it has treated the Water Resource problem as a subsurface reservoir problem rather than as a shallow-depth engineering problem.
MagnaScan moves onward today under the direction of its principal scientists and its capable support staff. It looks forward to continuing to bring economy and solutions to the Water Resources problems.
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