Velocity of radio-wave propagation in ice at Vostok station, Antarctica
Abstract:During the austral summer field season of the Russian Antarctic Expedition in 1999/2000, wide-angle reflections experiments were performed in the vicinity of the Russian station Vostok. A 60 MHz ice radar system with 12-bit digital recording was used. The measurements were taken along two perpendicular lines directed south-north and east-west with a distance of 200 m between marks.Weused a one-layer model (without snow-firn zone influence) for the calculations.We calculate that the average velocity of radio-wave propagation in the ice sheet is 168.4 ± 0.5 m µs-1.The same velocity was derived from hyperbolic diffractions from internal discontinuities. The results allow more accurate depth interpretation of radio-echo soundings.
Document Type: Research Article
Publication date: 2003-03-01
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