Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa21b0445h&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SA21B-0445
Physics
2431 Ionosphere/Magnetosphere Interactions (2736), 2437 Ionospheric Dynamics, 2467 Plasma Temperature And Density, 2475 Polar Cap Ionosphere
Scientific paper
During the April 2002 series of magnetic storms three DMSP satellites are orbiting, F13 in the 06 - 18 LT plane, and F14 and F15 in the 09 - 21 LT orbital plane. Starting on the 17th April and continuing through 20th April, high density patches of cold plasma are detected intermittently in the southern polar cap by all three satellites. At times these high density patches are observed simultaneously with energetic electrons (1 keV < E < 10 keV) in the southern cap. Energetic electrons with energies up to 1 keV are detected on crossings of the northern cap. These electron signatures persist throughout the entire day. We will discuss the polar cap signatures in the context of coupling to the interplanetary medium which allows cold ionospheric plasma to be convected across the cap giving rise to the patches, as well as direct entry of energetic electrons.
Burke William J.
Huang Chang-Yin
Rich Frederic J.
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