Abstract

High resolution electron density profiles were obtained with the incoherent scatter radar EISCAT at Ramfjordmoen over the height range 70–130 km during a period of auroral radio absorption events. The experiment, which was specially designed for D-region study, was carried out with a vertical radar beam and was based on a Barker-coded multipulse scheme with four frequency channels. The achieved height and time resolutions in electron density profiles were 750 m and 15 s respectively. The absorption values calculated from these electron density data show good temporal and spatial correspondence with absorption values obtained at local and nearby riometer stations.

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