Pine Island glacier is one of the fastest flowing outlets of ice from the west Antarctic ice sheet, draining an area three-quarters the size of the UK. In recent decades, the glacier has been retreating rapidly and losing ice, contributing more to global sea level rise than any other Antarctic glacier.
The speed of the glacier’s retreat and the rate that is has been losing ice has led to concerns about how stable the region is. Model results show that this region of west Antarctica could collapse in the future. If it does, then it could raise global mean sea level by several metres.