Abstract Rocket payloads designed to measure small-scale electron density irregularities and ion properties in the middle atmosphere were flown with each of the three main salvos of the MAC/Epsilon Campaign conducted at the Andøya Rocket Range, Norway, during October to November 1987. Fixed-bias, hemispheric nose tip probes measured small-scale electron density irregularities, indicative of neutral air turbulence, during the rocket's ascent; and subsequently, parachute-borne Gerdien condensers measured the region's polar electrical conductivity, ion mobility and density. One rocket was launched during daylight (15 October, 1052:20 UT), and the other two launches occurred at night (21 October, 2134 UT; 12 November, 0021:40 UT) under moderately disturbed conditions which enhanced the detection and measurement of turbulence structures. A preliminary analysis of the data indicates the presence of small-scale electron density irregularities in the general altitude range of 60 to 90 km. Ongoing data reduction will determine turbulence parameters and also the region's electrical properties below 90 km.
Middle atmosphere measurements of small-scale electron density irregularities and ion properties during the MAC/Epsilon Campaign
Advances in Space Research ; 10 , 10 ; 257-260
1990-01-01
4 pages
Article (Journal)
Electronic Resource
English
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