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United States Geological Survey - Magnetic Anomaly Map

ARCHIVE NOTATION: Data extracted September 2018. Exact date data was compiled by USGS is unknown.


The following was extracted from the United States Geological Survey



Magnetic anomaly maps and data for North America

Airborne measurement of the earth's magnetic field over all of North America provides gridded data describing the magnetic anomaly caused by variations in earth materials and structure.

https://picasaweb.google.com/114088596394247023766/6302478599238396017?authkey=Gv1sRgCKmJlMjaveaQ-gE#6601072058710504626






USGS Geomagnetic Files


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