GEOMAGNETIC SURVEY INFORMATION.
Brochure no. 2.
NAVAL OCEANOGRAPHIC OFFICE WASHINGTON D C
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This brochure contains index charts and brief descriptions of geomagnetic surveys. Information on the availability of Technical Reports, other publications, and work in progress is also presented. It is anticipated that this information will be brought up to date annually. On all surveys, both airborne and shipboard navigation uncertainty may introduce errors in the magnetic data presentation. The magnitude of data errors varies and is dependent on the navigation error and the magnetic gradients in the survey area.