Analysis of an extended period of earthward plasma sheet flow at about 220 R(E) - CDAW 8

Details Analysis of an extended period of earthward plasma sheet flow at about 220 R(E) - CDAW 8 Analysis of an extended period of earthward plasma sheet flow at about 220 R(E) - CDAW 8

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....9415177s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, Nov. 1, 1989, p. 15177-15188. Research sponsored by DOE.

Physics

18

Geomagnetic Tail, Geomagnetism, Magnetic Measurement, Magnetohydrodynamic Flow, Plasma Dynamics, Solar Terrestrial Interactions, Electrons, Flux (Rate), International Sun Earth Explorers, Protons, Solar Wind, Statistical Analysis

Scientific paper

The interpretation of the ISEE 3 earthward flow events observed during an extended period on January 29, 1983 is addressed in terms of a neutral line moving beyond roughly 220 earth radii. This concept was tested for consistency with current magnetospheric and solar wind observations. A broad range of additional data including Dynamics Explorer auroral imaging and a wide variety of ground-based measurements from the eighth Coordinated Data Analysis Workshop (CDAW 8) was available. The distant neutral line location within the context of the distant tail, geostationary orbit, auroral zone, and associated solar wind data is analyzed, based on an extended version of the Coraniti and Kennel (1972) flaring tail theory. It is concluded, from known solar wind conditions that, for a typical neutral line location at about 135 earth radii, an increase of about 30 percent of the near-earth lobe field strength would be required to cause the distant neutral line to move tailward beyond 220 earth radii. The question of why substorms did not terminate the growth phase earlier is also addressed.

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