The earth's magnetic field

Details The earth's magnetic field The earth's magnetic field

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984conph..25..269g&link_type=abstract

Contemporary Physics (ISSN 0010-7514), vol. 25, May-June 1984, p. 269-290.

Physics

5

Geomagnetism, Magnetic Field Configurations, Secular Variations, Convection, Dynamo Theory, Earth Core, Fluid Flow, Mathematical Models, Rotating Fluids, Thermodynamics

Scientific paper

There is a good observational record of the history of the earth's magnetic field throughout geological time. The physical processes occurring in the liquid core, where the field originates, are very complex however, and they are only just beginning to be understood. Recent progress has been made towards understanding the energetics of the core, which is a problem in thermodynamics; the dynamics, which is a problem in fluid mechanics in which magnetic forces are important; and also the slow variations of the magnetic field with time.

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