ADVANCES IN POLAR SCIENCE ›› 1994, Vol. 6 ›› Issue (3): 23-27.

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CRYSTAL FABRICS OF FIRN/ICE CORES FROM SHALLOW BOREHOLES ON NELSON ICE CAP,ANTARCTICA

  

  • Online:1994-09-30 Published:1994-09-30

Abstract:

The crystal fabric measurement of three shallow firn/ice cores from Nelson Ice Cap shows that c axes orientation is preferred at the surface.Within 20m depth,the double fan pattern fabric is dominant.Between 20 and 30m depth,the fabric pattern has a tendency to change to the single maximum pattern.These are very different from that reported from mountain temperate glaciers in the lower latitudes.The intense meltwater percolation and refreezing may have an important effect,but the mechanism needs to be studied further in detail.