Abstract:

Using a high frequency pulse radar of 300MHz, radar sounding was carried out at 150 points on Collins Ice Cap and the echo profile of bedrock in 15km distance was given. The maximum ice thickness, 125-131m, at Small Dome of this ice cap was located on the summit; the average thickness on the ridge from summit of Small Dome to summit of Main Dome was about 109m; a radar echo was observed at the depth of 50-85m around the summit of Main Dome, which was proven a water table by ice coring; the bedrock topography of Small Dome in the direction near south to north was similar to that of Northern Terrace.