Formation and Geometry of Geomagnetic Tail
The idea of a geomagnetic field confined by solar plasma is an old one (e.g., Chapman and Ferraro, 1931; Dungey, 1955; Hoyle, 1956; Dessler, 1958; Parker, 1958; Piddington, 1959). By 1960, with the publication by Johnson (1960) of his teardrop model, the position of theorists was unified to the point that they all were in agreement that the outer geomagnetic field was seriously distorted by solar plasma and that beyond 6 to 10 RE the geomagnetic field was confined asymmetrically by this plasma. However, as is often the case in space physics, what theorists believe has perhaps less influence on scientific opinion than even the more modest of them realize. A figure used in several recent reviews shows the’ magnetosphere of the 1950’s’ as a dipole field extending presumably to infinity while the’ magnetosphere of the 1960’s’ is the negligible merging model put forth by Dessler (1964).
KeywordsSolar Wind Interplanetary Magnetic Field Tail Length Solar Plasma Neutral Sheet
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- Davis, L.: 1969, private communication.Google Scholar
- Dessler, A. J. and Michel, F. C.: 1966, in adeiation Trapped in the Earth’s Magnetic Field (ed. by B. M. McCormac), D. Reidel Publishing Company, Dordrecht-Holland, p. 447.Google Scholar
- Dungey, J. W.: 1955, The Physics of the Ionosphere, The Physical Society, London, pp. 229–236 (also, Perm. State Univ. Sci. Rep. No. 69).Google Scholar
- Mead, G. D.: 1964, J. Geophys. Res. 69, 1181.Google Scholar
- Michel, F. C. and Dessler, A. J.: 1965,J. Geophys. Res. 70, 4305.Google Scholar
- Montgomery, M. D. and Singer, S.: 1969, J. Geophys. Res. 74, 2869.Google Scholar
- Ness, N. F.: 1965, J. Geophys. Res. 70, 2989.Google Scholar
- Piddington, J. H.: 1959, Geophys. J. Roy. Astron. Soc. 2, 173.Google Scholar