Simulator lab

TEM/TDEM simulator

Switch the current off and watch the ground decay

Method notes

Interpretation

A 50 m loop driven at 15 A gives a 117,810 A.m2 moment; the 40 S target decays with a 0.50 ms time constant, separating it from the host decay at late times.

Transmitter moment

117,810 A.m2

Target time constant

0.503 ms

Depth @ 1 ms

511 m

Depth @ 10 ms

1,615 m

Host conductivity

5 mS/m

Decay curve

The conductor departs from the host t^-5/2 decay at late times - that departure is the target.

Host onlyHost + conductor

Diffusion depth vs time

The smoke-ring depth tells you which time gate senses which depth.

Depth