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American Focus > Blog > Tech and Science > Meltwater bursts through Greenland ice in first-of-a-kind eruption
Tech and Science

Meltwater bursts through Greenland ice in first-of-a-kind eruption

Last updated: July 30, 2025 6:40 am
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Meltwater bursts through Greenland ice in first-of-a-kind eruption
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Satellite image of the subglacial lake region after the outburst flood occurred, showing the fracturing of the ice sheet

10.1038/s41561-025-01746-9

Unprecedented Event: Meltwater Eruption in Greenland’s Ice Sheet

A remarkable event unfolded in 2014 when a massive volume of meltwater from a subglacial lake beneath Greenland’s ice sheet erupted to the surface, creating a spectacle of 25-meter ice mounds and extensive crevasses. This phenomenon, never witnessed before, has raised significant interest among scientists.

Lead researcher, Malcolm McMillan from Lancaster University, described the event as unprecedented. While it is known that subglacial lakes in Greenland drain, the violent eruption of water through the ice sheet’s surface was a novel occurrence that caught researchers by surprise.

Using satellite data and advanced modeling techniques, McMillan and his team pieced together the sequence of events that led to the eruption. They identified a crater, 85 meters deep, that appeared suddenly on the ice sheet’s surface in August 2014, signaling the outburst of a subglacial lake within a short 10-day period the previous month.

Further investigation revealed significant ice disturbances downstream from the crater, indicating the path taken by the escaping water. The team hypothesized that the build-up of water pressure within the subglacial lake forced it to surface through fractures in the ice, causing the dramatic eruption and resulting in the formation of massive crevasses and ice towers.

According to McMillan, the unique upward force of the water was attributed to the surrounding ice being frozen to the bedrock, creating a situation where increased water pressure led to the unexpected breach through the ice sheet.

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Looking ahead, McMillan aims to analyze satellite imagery to determine if similar eruptions have occurred and to explore the implications of such events in the context of rapid ice sheet melting driven by global temperature rise.

In conclusion, this unprecedented meltwater eruption in Greenland offers a fresh perspective on the complex interactions within the ice sheet and underscores the urgent need to comprehend the implications of such phenomena in a changing climate.

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TAGGED:BurstseruptionfirstofakindGreenlandIceMeltwater
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