Hello Nick. Pemberton (1962) has a decent amount of information about the ABEM system.
Pemberton, R. H., 1962, Airborne Electromagnetics in Review: Geophysics, 27, 691-713. (https://doi.org/10.1190/1.1439081) ... Richard Lane On Thu, Jul 18, 2019 at 4:01 AM Ken Witherly via SEGMIN < [email protected]> wrote: > Dear Colleagues > > > > A query about old AEM systems showed up on the grav/mag server. I sent him > a Lundberg marketing booklet which is pretty good (published in 1959). > Maybe others have something they could contribute? > > > > Re > > > > *From:* [email protected] <[email protected]> > *On Behalf Of *Nicholas Gant > *Sent:* Wednesday, July 17, 2019 11:37 AM > *To:* [email protected] > *Subject:* [GRVMAG] Re: 1960s ABEM airborne em system > > > > > > Hello all, > > > > this may not be the right forum to raise this query, but have any of you > really old folks recall, have knowledge about or had first or second hand > experience of the ABEM airborne em system of the early 1960s ? It was soon > replaced by the Barringer Input system. > > > > The method used two fixed wing aircraft, one having a rectangular vertical > antenna/coil (say 4' x 6') mounted on top of the fuselage (the transmitting > coil ?), the other aircraft probably towing a multi coil sensor in a bird. > Photos I have show no wing-tip/tail/wing-tip/nose loop, so I assume the the > receiver antenna may be bird-mounted. > > > > Again, I assume one aircraft followed the other, horizontal separation > about 100 m. It was not a successful system due to operating expense if > nothing else, one interpreter called it "stupid"..... > > > > Has anyone any knowledge of this obsolete method, or have references to it > ? > > > > Best wishes, > > > > Nick, > > Danville, CA. > > > > > > > ----------------------- > SEGMIN community mailing list service ([email protected]). > Change your personal options here: > https://lists.geosoft.com/mailman/options/segmin/rjllane%40gmail.com > Colleagues can join here: > https://lists.geosoft.com/mailman/listinfo/segmin > Archives: https://lists.geosoft.com/mailman/private/segmin/ > NOTE that <Reply> will reply to all members of the list. >
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