The glacier incurs stresses due to the change in the bed-rock topography it flows over, the lack of pressure in front of it and the reduction in thickness at the front.
由于它经过的床岩地势变化，以及它的前部缺乏压力，厚度缩小，冰川遭受到压力。
2
Modelling tests are made in this paper to check the error subtraction scheme of the pressure gradient force in models with topography developed by the authors.