Abstract
Airborne geophysical and imagery technologies can be used to rapidly characterize watersheds. Frequency domain electromagnetics (FDEM) and thermal infrared (TIR) imagery are being used to map surface and subsurface hydrologic features. FDEM is being used to map water-filled fractures and voids that serve as groundwater conduits; TIR is being used to identify locations where groundwater discharges to the surface. The benefits of airborne reconnaissance include: significant cost savings through large-scale data collection, reduced landowner-access issues, improved watershed management practices, efficient targeting of costly, high resolution ground investigations, and superior techniques for locating drilling sites. The papers that follow this overview provide detailed descriptions of the application of these technologies on a case study basis.
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