On Calculating Transient Electromagnetic Fields of a Small Current- Carrying Loop Over a Homogeneous Earth
OFFICE OF TELECOMMUNICATIONS BOULDER CO INST FOR TELECOMMUNICATION SCIENCES
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The basic theory of airborne EM surveying, in the time domain, is considered. Rather than resorting to tedious double numerical integration, a more direct approach is adopted. This method, valid in the quasi-static regime, is illustrated for a homogeneous flat earth. The results exhibit a number of clear-cut features that are relevant to remote sensing. For example, a vertical co-axial loop system has a desirable transient response from the standpoint of yielding conductivity data without requiring accurate information on the height of the device above the ground.
- Geology, Geochemistry and Mineralogy