Earth’s Magnetic Anomalies – Could the Poles Flip?

Computer-generated snapshot of lines of force in the Earth's magnetic field beginning at the Earth's surface from where they penetrate smoothly into the insulating mantle. The structure changes dramatically in the liquid core below the mantle where the magnetic field is generated by the convection of the core's melted iron. Graphic courtesy Gary A. Glatzmaier, EE-IGPP, Los Alamos National Laboratory and Paul Roberts, University of California-Los Angeles.

April 27, 2002 Cambridge, Massachusetts - Deep beneath our feet as we walk around in fact, 4,000 miles down is the center of the earth where an iron core is so hot it is liquid and boils around like cooking porridge. That moving, melted iron also produces the magnetic fields that surround the earth and upon which much of earth's surface life, satellites and space technology depend upon for orientation, and for protection. If magnetic fields did not trap highly energetic particles racing from the sun, all kinds of damage could be done to living organisms and space technologies. For nearly a million years, magnetic field lines have been coming out of the south pole and entering the north pole of the earth. That is called the magnetic dipole.

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