Dictionary:Electromagnetic array profiling (EMAP)

1. Electromagnetic measurements, airborne or ground, using a multiplicity of transmitters and/or receivers in an invariant configuration. 2. A variant of the magnetotelluric method (q.v.) where electric field measurements along a profile are made in a continuous fashion. Data is then processed to remove the effects of near-surface inhomogeneities. See Bostick (1986).