Fig. S9b from Tensile fracture of a single crack in first-year sea ice

The breakup of sea ice in the Arctic and Antarctic has been studied during three field trips in the spring of 1993 at Resolute, N.W.T. and the fall of 2001 and 2004 on McMurdo Sound via <i>in situ</i> cyclic loading and fracture experiments. In this paper, the back-calculated fracture information necessary to the specification of an accurate viscoelastic fictitious (cohesive) crack model is presented. In particular, the changing shape of the stress separation curve with varying conditions and loading scenarios is revealed.This article is part of the theme issue ‘Modelling of sea-ice phenomena’.

本研究针对北极与南极海冰的崩解过程开展相关研究，共完成三次野外考察与实验：1993年春季于加拿大西北地区雷索卢特（Resolute, N.W.T.）、2001年秋季与2004年秋季于麦克默多湾（McMurdo Sound），通过原位（in situ）循环加载与断裂实验获取相关数据。本文呈现了精准构建粘弹性虚拟（黏聚）裂纹模型所需的反演断裂信息，具体而言，研究揭示了应力分离曲线随实验条件与加载工况变化的形态演化规律。本文隶属于“海冰现象建模”专题专栏。