Dictionary:Horizontal-loop method (HLEM, HEM)

From SEG Wiki
Revision as of 15:19, 20 December 2011 by Wiki Admin (talk | contribs) (Initial import)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

A frequency-domain electromagnetic method in which coplanar (usually horizontal) transmitter and receiver coils separated by a constant distance are moved over a survey area. The primary field is nulled and then in-phase and quadrature components are measured. Also called horizontal coplanar, Ronka EM, and slingram. See Figure E-7.