Magnetic field compression at the dayside magnetopause

Details Magnetic field compression at the dayside magnetopause Magnetic field compression at the dayside magnetopause

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....8710407c&link_type=abstract

Journal of Geophysical Research, vol. 87, Dec. 1, 1982, p. 10407-10412.

Physics

29

Geomagnetism, Magnetic Field Configurations, Magnetopause, Solar Wind, Stagnation Point, Gas Dynamics, International Sun Earth Explorer 1, International Sun Earth Explorer 3, Magnetosheath, Plasma Interactions

Scientific paper

The degree of compression sustained by the solar wind field as it convects to the magnetopause has been determined empirically with magnetometer data from ISEE 3 in the solar wind and ISEE 1 in the magnetosheath. At the stagnation point, the strength B(SH) of the magnetosheath field may be expressed as B(SH) = square root of 4 X B(SW)' X B(ST), which implies that B(SH) is equal to the geometric mean of the stagnation field strength B(ST) and the shocked solar wind field, approximated by 4 X B(SW)'. For the usual spiral wind pattern of the solar wind field, B(SH) on the duskside of the magnetopause is about 20 percent stronger than it is on the downside. No dependence of B(SH) on the sign of the north-south component of the solar wind field is apparent.

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