Abstract:

The temperature measurement in boreholes shows that the Collins Ice Cap has characteristics of temperate glacier in most parts of the accumulation area, but it is characterized by cold glacier in ablation area. The ice temperature of the active layer is noticeably affected by seasonal variations of air temperature. The water infiltrating and warming is very strong. The snow cover also casts some influence on temperature distribution. The observed data have revealed that the ice temperature in deep layers is at the freezing points,but the temperature varies greatly in the vicinity(10-20m) of the Little Dome.Water seeping is very significant at the depth of 30m in someboreholes while drilling in the vicinity of the Little Dome. This can be explained by internal runoff, different ice movement, etc.