Scientists reveal rapid expansion of cracks in Greenland's ice sheet

New 3D maps show that cracks in Greenland's ice sheet have widened and deepened significantly from 2016 to 2021. These crevasses, mainly at the edges, accelerate melting and could lead to increased sea level rise. The study found that crevasses grew by up to 25% in five years, particularly in coastal areas. While a glacier in West Greenland temporarily slowed down melting, it is now moving faster again, which may not offset future increases in crevasse size. Researchers warn that growing cracks promote faster ice flow and more calving events, potentially leading to significant sea level rise. Previous estimates indicated the ice sheet could raise sea levels by 23 feet if melted completely.