A landslide linked to climate change rang' the Earth for 9 days, researchers say
Briefly

The unusual seismic signal, described as a pure tone lasting for nine days, was traced back to a massive avalanche triggered by glacial melting in Greenland.
Researchers liken the seismic signal caused by the seiche phenomenon to a single piano key struck for an extended duration, as opposed to the quick decay of an earthquake's vibrations.
The tsunami generated by the avalanche stood at an astonishing 200 meters high, with the force of falling rock and ice creating a profound seismic signal over vast distances.
Svennevig and the team needed time and careful research to prove their hypothesis, relying on rare data sources including declassified military bathymetric maps.
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