Development of a numerical ice-shelf model for study on dynamics over boundaries between ice-sheet and ice shelf

为了了解和模拟冰盖对气候变化的响应，建立了一个数值冰架模式。通过冰架模型计算了冰架搁浅对南极冰盖体积的影响，发现了解冰架的变化是了解整个南极冰盖的关键。在讨论了有限精度数值计算误差对冰架演变的影响后，设计了减小有限精度数值计算误差的冰架模式，并在不同的构形下进行了试验。

A numerical ice shelf model is developed in order to understand/simulate response of ice-sheets on climate variation. An ice-sheet model is used to evaluate the potential contribution of ice-shelf grounding to the ice-sheet volume and it is found to be an essential to understand the variation of ice-shelf to understand the whole Antarctic ice-sheet. After discussing influence of errors due to finite-precision numerics on ice-sheet evolution, the ice-shelf model is designed to reduce such numerical errors, and tested under various configuration.