Physics – Plasma Physics
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997georl..24.3153w&link_type=abstract
Geophysical Research Letters, Volume 24, Issue 24, p. 3153-3156
Physics
Plasma Physics
10
Magnetospheric Physics: Magnetotail, Magnetospheric Physics: Plasma Sheet, Space Plasma Physics: Discontinuities, Space Plasma Physics: Shock Waves
Scientific paper
Observations of slow shocks in the Earth's magnetotail at the plasma sheet-lobe boundaries have been well documented. We restudy the magnetic field data of two slow shocks: one was observed from Geotail on January 17, 1994 at XGSE=-92RE, and another was observed from ISEE-3 on February 2, 1983 at XGSE=-220RE. In both cases, the slow shock layer was followed by an adjoining rotational discontinuity layer on the postshock side. Compound structures each composed of a slow shock layer and an adjoining rotational discontinuity layer have been recently observed in interplanetary space from Wind, Geotail and Imp-8. Because the two successive discontinuities are very close to each other, the compound structure looks like a new kind of MHD discontinuity. It may be called a double discontinuity. Since double discontinuities exist not only in interplanetary space but also in the magnetotail region, they could be a general MHD structure in space plasma.
Fairfield D.
Kokubun Susumu
Lepping Ronald P.
Saito Yukio
Smith Edward. J.
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