Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm11a0324s&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SM11A-0324
Physics
2431 Ionosphere/Magnetosphere Interactions (2736), 2435 Ionospheric Disturbances, 2475 Polar Cap Ionosphere, 2760 Plasma Convection (2463)
Scientific paper
We present correlated Wind-Polar -DMSP observations of precipitation features in the northern, summer polar cap obtained during the passage of the sheath region of an interplanetary magnetic cloud. The sheath was characterized by an strong magnetic field whose direction spanned a wide range of orientations. Distinct field and flow discontinuities allow us to interpret a series of energetic (maximum E ~20 kV) ion bursts, flowing predominantly against the field direction and which are accompanied by enhanced polar rain electron fluxes. The underlying convection pattern is inferred from DMSP passes. Generating mechanisms involving overdraped lobe/dual reconnection are examined in the light of the observations.
Farrugia Charles
Sandholt P.
Sharma Aashish
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