NASA NTRS · 19760004739
Subsurface sounders
Abstract
Airborne or spaceborne electromagnetic systems used to detect subsurface features are discussed. Data are given as a function of resistivity of ground material, magnetic permeability of free space, and angular frequency. It was noted that resistivities vary with the water content and temperature.
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1975-01-01. Subsurface sounders. https://ntrs.nasa.gov/citations/19760004739
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