Bottom Melting under George VI Ice Shelf, Antarctica
Bottom Melting under George VI Ice Shelf, Antarctica
复制标题
南极洲乔治六世冰架下的底部融化
DOI：
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发表时间：
1981
影响因子：
3.4
通讯作者：
J. L. W. Walton
中科院分区：
文献类型：
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作者：
J. F. Bishop;J. L. W. Walton
摘要通过对乔治六世冰架运动学特性的测量，计算了大量冰架的底部融化速率。没有简单的解释融化速率模式被发现在冰架参数，假设稳态条件。冰的表观融化速率值从1 m a − 1到8 m a−1不等。沿着不同的流线，熔化速率有时会随着与接地线的距离而增加，有时熔化速率会随着距离而降低。在帕尔默地的冰流和冰架与亚历山大岛对接的地方都发现了大的融化率。虽然海洋学条件可能控制着底部融化速率，但空间变化很大的复杂模式似乎表明，某些地区的冰架厚度正在发生变化。
Abstract Bottom melting rates have been calculated for a large number of sites on George VI Ice Shelf from measurements of its kinematic behaviour. No simple explanation for the melt-rate pattern was found in terms of ice-shelf parameters, assuming steady-state conditions. Values of apparent melt rates varied from 1 to 8 m a−1 of ice. Along different flow lines the melt rate would sometimes increase with distance from the grounding line and sometimes the melt rate would decrease with distance. Large melt rates were found both where ice flowed off Palmer Land and where the ice shelf butted against Alexander Island. Although oceanographic conditions probably control bottom melting rates the complex pattern with large spatial variation seems to indicate that some areas of ice shelf are changing in thickness.