Dictionary:Magnetic induced polarization (MIP)
A method of IP surveying involving measurement of the transient magnetic (rather than electric) field caused by galvanic currents. Involves measuring the normalized primary magnetic field HN,
where HP is the steady-state magnetic field amplitude measured at a single transmitter frequency, HPʹ is the value calculated for uniform ground, and the magnetometric resistivity (MMR),
where HP0 is the predicted uniform-ground primary field at the midpoint between the current electrodes. The magnetic fields are in the picotesla range and require a very sensitive low-noise magnetometer for their measurement. See Seigel and Howland-Rose (1983).