Observations of plasma distributions during the coordinated data analysis workshop substorms of March 31 to April 1, 1979

Details Observations of plasma distributions during the coordinated data analysis workshop substorms of March 31 to April 1, 1979 Observations of plasma distributions during the coordinated data analysis workshop substorms of March 31 to April 1, 1979

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.2377h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, March 1, 1987, p. 2377-2384.

Physics

8

Geomagnetic Tail, Magnetic Storms, Solar Wind, International Sun Earth Explorers, Plasma Density, Spectrograms

Scientific paper

On March 31 and April 1, 1979, a sequence of substorms was recorded on the ground. During the entire active period the ISEE 1 and 2 satellites were located in the magnetotail, between 22 R(E) and 12 R(E) from the earth. Observations of plasma distributions made at varying levels of activity during these substorms provide good examples of typical magnetotail responses. While the entire magnetotail undergoes temporal variations during substorm activity, the most obvious effect seen is spatial motion of preexisting plasma regimes; for example, at substorm onset the central plasma sheet contracts. This can cause a spacecraft to move from the plasma sheet into the boundary layer. As the plasma sheet boundary layer almost always comprises streaming plasma, the high-speed flows observed there are not necessarily due to the substorm process. The essential nature of the main plasma regions of the magnetotail is relatively unchanged during high activity.

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