Interpretation
Flying 40 m above 100 ohm-m ground at 8000 Hz gives an induction number of 0.71 and useful depth information to roughly 28 m.
Skin depth
56 m
Depth of investigation
28 m
Footprint
120 m
Induction number
0.71
Coupling scale
1,000 ppm
In-phase and quadrature spectrum
Quadrature peaks at moderate induction numbers; in-phase grows towards the inductive limit.
Response vs flight height
Coupling falls roughly with the cube of clearance - altitude discipline matters.