Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusmsm52a..05t&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #SM52A-05
Physics
2740 Magnetospheric Configuration And Dynamics, 2744 Magnetotail, 2760 Plasma Convection, 2764 Plasma Sheet, 2784 Solar Wind/Magnetosphere Interactions
Scientific paper
Numerous satellite studies have revealed the existence of cool, dense plasma in the mid-tail plasma sheet during conditions of northward interplanetary magnetic field (IMF). This population typically does not penetrate into the near-earth region because of the very weak convection that exists during northward IMF. However, in this report we document two examples of conditions under which cold, dense plasma sheet was in fact delivered fairly deep into the near-earth region, as evidenced by its detection by Los Alamos plasma instrumentation at geosynchronous orbit. The conditions under which such plasma sheet can penetrate close to the earth are 1) a sudden southward IMF following an extended interval of northward field, and 2) a very strong magnetospheric compression caused by a large increase in the solar wind dynamic pressure, also under conditions of northward IMF.
Borovsky Joseph E.
Thomsen Michelle F.
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