Amery冰架DEM及其海洋冰分布研究

DEM of Amery Ice Shelf and the Distribution of Its Marine Ice

Amery冰架是东南极最大的冰架。利用克里格插值法对Amery冰架地区的ICESat激光高度计数据进行空间插值,建立该地区的DEM。依据流体静力学平衡原理构建Amery冰架的冰厚度图,结合冰雷达测厚数据,获得了海洋冰的空间分布。结果显示Amery冰架下的海洋冰主要位于西北部,体积为2.38×1012m3,约占冰架总体积的5.6%,冰架最大厚度为230 m。

The Amery Ice Shelf is the biggest ice shelf of the East Antarctica. The DEM for the Amery Ice Shelf was generated using Kriging to interpolate the data from ICESat altimetry and the AIS- DEM. The ice thickness distribution map was obtained by hydrostatic equilibrium. The marine ice distribution is deduced that the volume of the marine ice is 2, 38× 10^12 m^3 and accounts for about 5.6 % of the ice shelf volume and the marine ice is up to 230 m thick, which was concentrated in the northwest of the ice shelf.