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Magnetic anomalies reflect variations in the distribution and type of magnetic minerals, primarily magnetite, in the Earth’s crust. This google overlay illustrates the magnetic anomalies across the continental US.
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The International Geomagnetic Reference Field Model from NOAA Includes: Magnetic Declination (D), Inclination (I), Horizontal intensity (H), Vertical intensity (Z), and Total Intensity (F) |
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Magnetic Anomaly Map of the Earth Global compilation of the wealth of magnetic anomaly information. The magnetic field at or near the surface of the Earth is a combination of Earth's magnetic field and fields of external (solar) origin. |
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