Physics
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2147g&link_type=abstract
(ISEE Magnetopause Workshop, Garching, West Germany, Oct. 1980.) Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2147
Physics
91
Geomagnetism, Lines Of Force, Magnetic Field Configurations, Magnetopause, Boundary Layer Flow, Daytime, Hodographs, International Sun Earth Explorers, Magnetohydrodynamic Flow, Magnetosheath, Solar Wind
Scientific paper
The paper investigates several highly unusual encounters with the earth's magnetopause, that occurred during an approximately 5-hour period on November 22-23, 1979, when the ISEE 1 and 2 were near orbit apogee. A large decrease in the dynamic pressure exerted by the solar wind resulted in an expansion of the magnetosphere to and beyond the apogee of the ISEE 1 and 2 orbit, and the subsolar magnetopause of about 20.4 earth radii is farther than normal in geocentric distance by a factor of about 2. Field rotations varying from about 80 to 120 deg were involved in the transition from the magnetosheath to the magnetosphere, and hodograms of the tangential component of the magnetic field vector suggest that the magnetopause was a rotational discontinuity. These observations indicate that on occasion reconnection at the dayside magnetopause can be a quasi-stationary process.
Asbridge J. R.
Bame J. Jr. S.
Feldman William C.
Gosling Jack T.
Paschmann Goetz
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