Lake on the 79°N Glacier is splitting the ice – leaving permanent changes
Reports and Proceedings
Updates every hour. Last Updated: 9-Nov-2025 06:11 ET (9-Nov-2025 11:11 GMT/UTC)
Since the mid-1990s, the Greenland ice sheet has been losing mass, leaving only three floating tongues remaining. One of these, Nioghalvfjerdsbræ or the 79°N Glacier, is already showing the first signs of instability. In addition to the warm ocean water, which is increasingly thinning the ice from below, the runoff of meltwater on the surface is also playing an increasingly significant role. In a new study, researchers from the Alfred Wegener Institute investigated how - caused by global warming - a 21 km2 large meltwater lake formed and developed on the surface of the 79°N Glacier. They observed that over the years, this lake has caused gigantic cracks and the outflowing water is lifting the glacier. Their findings have been published in the journal The Cryosphere.
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