On September 16, 2023, seismometers across the planet detected a signal that, like a bell, continued to “ring” for nine days. They quickly located the origin: an isolated, uninhabited fjord in eastern Greenland, where a landslide had just occurred. However, it took the combined efforts of researchers from 15 countries, with aerial images and satellite data, to grasp the scale of the “before” and “after.”
It is nothing less than a 1.2 km tall mountain that collapsed due to the retreat of the ice cap there. This is a translator. Because of 25 million cubic metres of rocks and ice that fell into the Dixon Strait, cause tsunami Height 200 meters.
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Since it is a fjord less than 3 kilometers wide and a glacier blocks one end, enormous energy has been released. He was somehow imprisoned in this small space.Instead of dissipating over the ocean, the “wobble” was strong enough to be detected by seismometers for more than a week. Experts then classified it as an “unidentified seismic object.”
In their description of this event, Published September 12 in the magazine sciencesThe researchers call it a “signal” that is unique in its consistency and duration. Previously, the strongest signals of this kind have only been observed for a few hours. It’s even possible that the oscillation lasted for more than nine days: at some point, it simply became too weak to be detected by instruments.
