Abstract
Two identical Ku band scatterometers were deployed at a number of locations in the region of the Filchner-Ronne ice shelf, Antarctica, during the austral summer '91/92. These were used to investigate the vertical incidence radar properties of the top 10m of firn, and these measurements were compared with those made by the ERS-1 radar altimeter over the region. The radar backscatter coefficient, on the ice shelf was found to remain constant over a period of 18 days, but the value differed significantly from that obtained on the nearby Coats Land plateau. Field measurements, coincident with ERS-1 overpasses, were made throughout a 4-week field season during the three day repeat cycle of the 'Ice Phase' of the satellite's operation. These show spatial agreement with the ERS-1 altimeter backscatter coefficient to within 1dB. Distinct sub-surface layering was detected at several locations, contributing up to 3dB to the total backscattered power with a variation over 30km of 1dB. The major surface factor contri...
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