A Study of Calving Dynamics for Jakobshavns Isbrae

该奖项是为了支持一项为期两年的格陵兰西海岸Jakobshavns Isbrae漂浮冰架的崩解动力学研究。Jakobshavns展示了全方位的冰川崩解环境，从从朝南的冰墙到浅冰川湖泊的缓慢板流崩解，到从朝北的冰崖到越来越深的水的更快的板流崩解，再到雅各布肖夫斯岛漂浮冰架向西的悬崖上已知的最快的溪流崩解。显示冰地形和冰速度的摄影测量图将作为输入，用于对导致破裂(破裂)和崩解的均质和非均质冰蠕动进行有限元计算机模拟。这项拟议研究的应用范围超出了Jakobshavns Isbrae，特别是与南极冰架崩解有关的应用。

This award is for support of a two year study of calving dynamics for the floating ice shelf of Jakobshavns Isbrae on the west coast of Greenland. Jakobshavns presents the full range of ice calving environments, ranging from slow sheet-flow calving from a south-facing ice wall into a shallow proglacial lake, through faster sheet-flow calving from a north-facing ice cliff into water of increasing depth, to the fastest known stream-flow calving from the west-facing cliff of a floating ice shelf in Jakobshavns Isfjord. Photogrammetric maps showing ice topography and ice velocity will be used as input for finite-element computer modeling of both homogeneous and nonhomogeneous creep of ice that leads to fracture (crevassing) and calving. The proposed study has applications beyond Jakobshavns Isbrae, in particular applications relating to calving of Antarctic ice shelves.