EISCAT observations on plasma drifts connected with the Aureld-VIP rocket and the Viking satellite

Details EISCAT observations on plasma drifts connected with the Aureld-VIP rocket and the Viking satellite EISCAT observations on plasma drifts connected with the Aureld-VIP rocket and the Viking satellite

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....95.6073p&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, May 1, 1990, p. 6073-6080. Research supported by NFR.

Computer Science

Sound

2

Auroral Zones, Convection Currents, Eiscat Radar System (Europe), Plasma Drift, Rocket Sounding, Viking Spacecraft, Electric Fields, Nocturnal Variations, Particle Precipitation, Plasma Sheaths, Polar Orbits

Scientific paper

Coordinated simultaneous measurements with the EISCAT incoherent scatter radar, Aureld-VIP sounding rocket, and Viking satellite are described. Background measurements from EISCAT provide us with the development of global plasma convection during the rocket night. The observed convection pattern is very distorted, with the eveningside reversal occurring at unusually low latitudes. On the morningside it withdraws back poleward from the measurement area. Viking particle measurements over the oval indicate a very complicated auroral topology with two sectors of boundary plasma sheet (BPS) and central plasma sheet (CPS) particles. The situation is interpreted as an intrusion of the eveningside BPS into the morningside, which is also consistent with the convection pattern measured by EISCAT. Local measurements with the sounding rocket and radar indicate that the rocket flew in the northern part of the evening BPS area, approaching the 'inner' transition region from BPS to CPS in its northward motion, thus confirming the existence of such a boundary.

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