Physics – Plasma Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm41c1895m&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SM41C-1895
Physics
Plasma Physics
[2407] Ionosphere / Auroral Ionosphere, [2451] Ionosphere / Particle Acceleration, [2736] Magnetospheric Physics / Magnetosphere/Ionosphere Interactions, [7807] Space Plasma Physics / Charged Particle Motion And Acceleration
Scientific paper
The sounding rocket Cascades-2 launched on 20 March 2009 from the Poker Flat Research Range at 11:04:00 UT through a series of poleward boundary intensifications (PBIs). The rocket initially crosses a diffuse arc, then crosses the equatorward extent of one PBI, and finally crosses the initiation of a separate PBI before entering the polar cap. In this poster we present a more detailed analysis of particle distribution functions and moments of the distribution function. In situ electron precipitation and ion signatures associated with each crossing of the aurora are analyzed. Conjugate THEMIS measurements from three satellites located at -10 Re downtail lay out the sequence of events between the ionosphere and magnetosphere. Earthward plasma flows are observed at THEMIS for ten minutes prior to the aurora being seen to brighten in the ground cameras. After another half hour THEMIS observes a near-Earth dipolarization, at which point the flows are no longer seen. It is not until after these events that PBI activity is seen in the ground cameras, where it is observed by the rocket.
Dahlgren Hanna
Hampton Don L.
Kintner Paul M.
Lessard Marc
Lundberg E. T.
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