Physics
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm32a0804r&link_type=abstract
American Geophysical Union, Fall Meeting 2001, abstract #SM32A-0804
Physics
2431 Ionosphere/Magnetosphere Interactions (2736), 2451 Particle Acceleration, 2736 Magnetosphere/Ionosphere Interactions, 7807 Charged Particle Motion And Acceleration, 7859 Transport Processes
Scientific paper
As the effects of ionospheric O+ on the magnetospheric system start to be understood, it becomes more necessary to understand the mechanisms responsible for it's transport from the ionosphere to the magnetosphere. It has recently been accepted that there is a two-step process involved, first a bulk upwelling, and then a filamentary excitation process, which produces ion beams and conics. The study being conducted consists of three parts, a statistical study of the bulk ion upflows seen by incoherent scatter radar (ISR), a second statistical study of the filamentary ion outflows as seen by the FAST satellite, and a statistical comparison between the two. This presentation covers the first, low altitude part of the study, and uses ISR data from the Svalbard and Tromso radars of the European Incoherent Scatter Radar Scientific Association, and the Sondrestrom ISR operated by SRI International, from January 1996 through April 2001. By using ISR we can get height-differentiated data in the origin region of the outward flowing ions. Comparing the upflow occurrences with the location of the auroral oval (as determined by the OVATION program run by Dr. Newell et al. of The Johns Hopkins University Applied Physics Laboratory) and solar wind/IMF data from the WIND satellite (from the Space Science center at UCLA), we can determine possible drivers for the upflows, which are the start of the O+ lifecycle in the magnetosphere.
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