The Antarctic Ice Sheet

The Antarctic ice sheet has the form of two coalesced ice sheets and is basically dome shaped (Fig. 4.1). The larger thicker East Antarctic Ice Sheet is classed as terrestrial because its base is resting on land which is mostly above sea level. (The mean elevation of bedrock in East Antarctica is 15 m, Drewry et al. 1982). The smaller, lower elevation West Antarctic Ice Sheet is a marine ice sheet because it is grounded mostly well below sea level (Fig. 4.1 inset). The mean elevation of bedrock here is 440 m below sea level (Drewry et al., 1982). The ice reaches 4,000

0 0

Post a comment