Applications of Geophysical Tools in Ground-Water Resource Investigations (Callegary)

Presentation given during the USGS/IAEA/IW:LEARN groundwater learning exchange in the US April 14-26, 2007. Seismic refraction DC Resistivity Shallow investigations Sting/Swift unit—battery powered Deep investigations High-powered transmitter Electromagnetic induction tools Frequency domain (ground-conductivity meters) EM-34 (~ 60 m), EM-31 (~ 6 m), EM-38 (~ 1.5 m) Time domain nanoTEM (~ 100-200 m) zeroTEM (~ 200-300 m) High-powered transmitter (~2000 m) Borehole Methods Gravity Absolute Relative Satellite Magnetics

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