For example,
A flood of depths has ripped off Greenland ice.
No one had seen him coming and yet … Consequently, In 2014. In addition, a gigantic mass of water, trapped under hundreds of meters of ice, decided to go up at once to unravel his prison in Greenland.
Result: a giant crater, blocks of ice returned like cars after a storm and scientists with Bée!
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For years. Meanwhile, a lake was there, warm under the cap, hidden under north of Greenland. Similarly, Invisible. Furthermore, Suddenly, he emptied in ten days, as if we had opened a barrage strip: 90 million cubic meters of water sprang. For example, It is the equivalent of nine hours of flow from the Niagara falls!
The water dug a crater 85 meters deep, two square no one had seen him kilometers.
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A shattered landscape as after a bombardment
The researchers had trouble believing. Meanwhile, it. Consequently, Going down the satellite images, they found themselves facing a post-apocalyptic scene. In addition, A chaos of 385. Similarly, 000 square meters covered with crevices, with blocks of ice returned 25 meters high, as if a giant had plowed the ground.
Around. Meanwhile, six square kilometers of icy terrain have been scratched, grated, as well as punctuated by the violence of the sub-Glacial torrent.
No one had no one had seen him planned that the water could go up
The climatic models. Nevertheless, so far, operated like a somewhat simplistic common sense. Furthermore, The ice melts, the water goes down, it flows towards the ocean. Point.
Except that there, she did the opposite. The water is mounted, broke the ice from the bottom, like a ram that goes up in a pipe. It is a bit as if we discovered that a volcano could eject lava towards the ground instead of. the sky. It forces the basics.
The most astonishing thing is that it did not happen in an unstable. fragile area but in a region that scientists considered to be frozen in depth. This means that even where the ice is supposed to be locked, water can move, and strong.
“We thought the data was false”
The first to realize it is Jade Bowling. then a doctoral student at the University no one had seen him of Lancaster. She sees a strange distortion on the cards, a huge hollow. She then thinks of an error.
However. by dint of crossing satellite data, comparing with field surveys and modeling flows, it understands: it is not an illusion. In front of her, she has the imprint of a lake that burst the ice from the inside.
With it, a whole team of European researchers is working to reconstruct the scene. They speak of a “never seen” event on the Greenlandic cap. a “start” of the ice which escapes the usual forecasts.
An alert sent from space
Satellites like Cryosat (ESA). ICESAT-2 (NASA) monitor the movements of ice by far in these very isolated or null human or camera areas are present.
They are the ones who. with the cards in very high definition of the Arcticdem project, to identify sagging, fractures and erosion. Without these orbital data, no one had seen him this event would have remained invisible.
If this happened once, nothing says that it will not start again. Warming increases the amount of water on the surface. and some of these waters can infiltrate the ice, supply other hidden lakes, and explode the cover again.
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A blank page in climate models
Greenland is enough ice to raise. the oceans of seven meters in the event of a cast iron. When a no one had seen him part of this ice moves or breaks unforeseen, it concerns us all, even from Paris or Tokyo.
Today. the models that simulate the melting and the dynamics of the cap completely ignore this kind of phenomenon since they start from the principle that water descends or flows to the ocean. Not that she can go up like a geyser as can happen as in 2014.
It is this gap that the study points out, published on July 30, 2025 in Nature Geoscience. And that’s good. because the scientific community is starting to integrate more complex data on sub-Glacial hydrology, these invisible, underground, but sometimes explosive water movements.
Source :
Bowling, J.S., McMillan, M., Leeson, A.A. et al. Outburst of a subglacial flood from the surface of the Greenland Ice Sheet. Nat. Geosci. (2025).
https://doi.org/10.1038/s41561-025-01746-9
Image: The Harder glacier, in northern Greenland, photographed by the Mission Copernicus sentinel-2 in 2024.
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