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Characterization Of The Electrical Structure Of An Agricultural Field In Burleson County, Tx
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 10th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, Mar 1997, cp-204-00080
Abstract
A transient, controlled-source electromagnetic survey has been performed at the Texas<br>A&M University Hydrogeologic Field Site adjacent to the Brazes River in Burleson County,<br>central Texas. The experiment is part of a larger, interdisciplinary effort to model the<br>fate of agricultural chemicals applied to river floodplains. A regularized inversion of the<br>electromagnetic data show that the sandy alluvial unit which constitutes the main aquifer<br>for subsurface transport of groundwater is apparent as a resistive zone at depths between<br>5-20 m. We observe effects in the transient electromagnetic responses that are indicative<br>of lateral heterogeneity and/or a polarizable Earth.