Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsm11c0456r&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SM11C-0456
Physics
2407 Auroral Ionosphere (2704), 2431 Ionosphere/Magnetosphere Interactions (2736), 2451 Particle Acceleration, 2481 Topside Ionosphere
Scientific paper
The transport of heavy ions from the ionosphere to the magnetosphere has been recognized as an important issue in magnetosphere-ionosphere coupling. Two consecutive mechanisms must operate for the transport to occur. First, a high altitude, high latitude reservoir must be filled by bulk upwelling of ionospheric ions. Then the ions must be further energized by filamentary processes (such as wave-particle interaction), originating in the magnetosphere, to create the ion beams and conics seen by satellites. This study identifies and characterizes the source regions for the reservoir by comparing locations and conditions for which there is ion upwelling to locations and conditions for which no upwelling occurs. Data from three incoherent scatter radar facilities (EISCAT's Tromso and Svalbard and SRI's Sondrestrom) were used, as they are located in the geographic region whose magnetic field lines connect to the magnetospheric tail.
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