Geomagnetic field analysis
- Joseph C. Cain
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The geomagnetic field observed about the Earth is the vector sum of several different components:
The main field, which is generated by electrical currents in the liquid core of the Earth and possibly by leakage currents into the deep mantle
The crustal or anomaly field, which results from direct magnetization of permeable material in the outer layers from the present main field, as well as remanent magnetization from ancient fields
The external field, produced by electrical currents in the ionosphere and magnetosphere, and modulated by the solar wind and the interplanetary field
The induced field, from electrical currents in the oceans and the conducting layers of the crust and mantle produced by flux changes from the external field, and possibly by changes in the core field.
The analysis of data must include consideration of all of these fields. Prior to satellite surveys, there was generally no distinction made between such sources. The word “geomagnetic” then meant the “regional” or ma ...
- Backus, G. E., 1970, Non-uniqueness of the external geomagnetic field determined by surface intensity measurements, Jour. Geophys. Research 75, 6337–6341.
- Chapman, S., and J. Bartels, 1940, Geomagnetism. Oxford: Clarendon Press.
- Cain, J. C., S. J. Hendricks, R. A. Langel, and W. V. Hudson, 1967, A proposed model for the International Geomagnetic Reference Field—1965, Jour. Geomagnetism and Geoelectricity 19, 335–355.
- Connery, J. E. P., M. H. Acuna, and N. F. Ness, 1982, Voyager 1 assessment of Jupiter's planetary magnetic field, Jour. Geophys. Research 86, 3623–3627.
- Langel, R. A., 1987, Main Field, in J. Jacobs, ed. Geomagnetism, Chap. 3., New York: Academic Press.
- Mauersberger, P., 1956, Das Mittel der Energiedichte des geomagnetischen Hauptfeldes an der Erdoberfläche und seine säkulare Änderung, Beiträge zur Geophys. 65, 207–215.
- Merrill, R. T., and M. McIlhinny, 1983, The Earth's Magnetic Field, International Geophysics Series 32, New York: Academic Press.
- Meyer, J., J.-H. Hufen, M. Siebert, and A. Hahn, 1983, Investigations of the internal geomagnetic field by means of a global model of the Earth's crust, Jour. Geophys. 52, 71–84.
- Peddie, N. W., 1986, International geomagnetic reference field revision 1985, Geophysics 51, 1020–1023.
- Schmitz, D. R., and J. C. Cain, 1983, Geomagnetic spherical harmonic analyses 1. Techniques, Jour. Geophys. Research 88, 1222–1228.
- Yukutake, T., and J. C. Cain, 1979, Solar cycle variations in the first-degree harmonic components of the geomagnetic field, Jour. Geomagnetism and Geoelectricity 31, 509–544.
- Geomagnetic Field: Asymmetries; Geomagnetic Field: Elements; Geomagnetic Field: Westward Drift; Geomagnetic Field, Main: Theory; Geomagnetic Secular Variation: Direction and Intensity; Geomagnetic Secular Variation: Theory; Geomagnetism: Historical Introduction; Spherical Harmonic Analysis.
- Geomagnetic field analysis
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- Reference Work Part
- pp 517-522
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- Series Title
- Encyclopedia of Earth Science
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- Springer US
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- Van Nostrand Reinhold
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