Observations of an enhanced convection channel in the cusp ionosphere

Details Observations of an enhanced convection channel in the cusp ionosphere Observations of an enhanced convection channel in the cusp ionosphere

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....98.3767p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A3, p. 3767-3776.

Physics

92

Flux Transfer Events, Interplanetary Magnetic Fields, Ionospheric Currents, Magnetosphere-Ionosphere Coupling, Plasma Acceleration, Solar Wind, Convection Currents, Magnetopause, Physics And Chemistry Experiment In Space, Polar Cusps

Scientific paper

The development of an enhanced convection channel within the Southern Hemisphere cusp ionosphere is studied on the basis of the combined PACE radar and DMSP satellite data sets. All data (solar wind and ionosphere) suggest that the event is a signature of enhanced magnetic merging, i.e., the ionospheric signature of a flux transfer event. It is suggested that such a signature arises from several minutes of continuous, enhanced merging rather than short-lived pulses of enhanced merging. The channel propagated westward at about 3 km/s and, when fully formed, its zonal dimension was comparable with the average width of the cusp. It is shown that the formation of polar patches is associated with the occurrence of convection channels.

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