Editing Magnetic anomaly detector (section)

==History==
Geoexploration by measuring and studying variations in the Earth's magnetic field has been conducted by scientists since 1843.  The first uses of magnetometers were for the location of ore deposits.  [[Robert Thalén|Thalen's]] "The Examination of Iron Ore Deposits by Magnetic Measurements", published in 1879, was the first scientific treatise describing this practical use.<ref>[https://web.archive.org/web/20050310171755/http://www.geo.ucalgary.ca/~wu/Goph547/CSM_MagNotes.pdf Note Outline: Geophysical Surveying Using Magnetics Methods, January 16, 2004, University of Calgary]</ref>

Magnetic anomaly detectors employed to detect submarines during [[World War II]] harnessed the [[fluxgate magnetometer]], an inexpensive and easy to use technology developed in the 1930s by [[Victor Vacquier]] of [[Gulf Oil]] for finding ore deposits.<ref>Dunmore, Spencer, Lost Subs, Chartwell Books, Edison NJ, 2007, p.120 {{ISBN|978-0-7858-2226-4}}</ref><ref name="lat">{{citation|url=http://www.latimes.com/news/science/la-me-vacquier24-2009jan24,0,3328591.story|journal=[[Los Angeles Times]]|title=Victor Vacquier Sr., 1907–2009: Geophysicist was a master of magnetics|date=January 24, 2009|page=B24}}.</ref>  MAD gear was used by both Japanese and U.S. anti-submarine forces, either towed by ship or mounted in aircraft to detect shallow submerged enemy submarines. The Japanese called the technology ''jikitanchiki'' (磁気探知機, "Magnetic Detector"). After the war, the [[U.S. Navy]] continued to develop MAD gear as a parallel development with [[sonar]] detection technologies.

Satellite, near-surface and oceanic data from detectors was used to create the [http://projects.gtk.fi/export/sites/projects/WDMAM/project/perugia/WDMAM_1.02_2007_Edition_low_resolution_reduced1.pdf World Digital Magnetic Anomaly Map] published by the [[Commission for the Geological Map of the World]] (CGMW)  in July 2007.