G., and Collins, E. W., 2003, Applying airborne electromagnetic
induction in groundwater salinization and resource studies, West
Texas, in Proceedings, Symposium on the Application of Geophysics
to Engineering and Environmental Problems: Environmental and Engineering
Geophysical Society, p. 722-738 (CD-ROM).
in Word format]
G., and Collins, E. W., 2002, Evaluating potential groundwater resources
on State Lands in El Paso County, Texas using airborne geophysics:
report prepared for the General Land Office under contract no. 02-306R,
in Word format]
Potential Ground-Water Resources on State Lands in
El Paso County, Texas, Using Airborne Geophysics
this project sponsored by the Texas General Land Office, we combined
ground-based and high-resolution airborne geophysical methods with
an analysis of available water-well data and geologic information
to identify potentially favorable groundwater resources within the
Hueco Bolson in eastern El Paso County, Texas. An airborne geophysical
survey flown by Fugro Airborne Surveys in August 2001 acquired time-domain
electromagnetic and passive magnetic field data over the 372-km2 survey
area. Magnetic field data correlated well with mapped fault locations.
Airborne TDEM data were processed to produce animations and horizontal
slices that depict apparent conductivity changes at 10-m depth intervals.
Above the zone of water saturation, geologic features such as faults
are prominent in the data. Below the water table at about 100 m, apparent
conductivity values correlate with existing groundwater quality data.
Largely on the basis of airborne survey results, we identified two
areas of low conductivity that are favorable locations for groundwater
exploration. Although these areas represent the most favorable sites
for groundwater exploration in the area, geophysical and available
water-well data suggest that these resources are limited and that
local, high-volume production would likely be accompanied by significant
water-level decline and salinity increase.
more infomation, please contact Jeff Paine, principal investigator.