全球海面变化的两极冰盖模型

在Clark等(1976)提出的在粘弹性地球上全球海面变化的数值模型和笔者(1992)提出的一极冰盖质点模型的基础上,考虑冰盖在两极的实际分布,建立两极冰盖质点分布的数理模型。计算结果表明,一极模型中海面变化的的极值区在S极,而两极模型中海面变化极值区在南半球的中纬度地区。

TWO POLAR ICE SHEET MODELS OF GLOBAL SEA-LEVEL CHANGES

A numerical model is presented for calculating the changes in sealevel that occur when ice and water masses are rearranged on the surface of elastic and viscoelastic non-rotating Earth. The method is used to calcualte the instantaneous elastic and delayed viscoelastic sea level changes following the partial melting of late Quaternary ice sheets.Suppose we extract two masses M1 and M2, representing two ice sheets from the ocean (it caused a uniform fall 100m in sea level ) , and locate M1 and M2 as two spherical caps in the north pole and the south pole. They can make the core move 22. 9m and caused the maximal differentia 23m.