"It's the first time we've found a seismic signal of this type in the global record: some people thought their sensors were broken," says Kristian Svennevig, a geologist at the Geological Survey of Denmark and Greenland in Copenhagen, who led a study of the event, published on 12 September in Science. Far-flung stations registered the signal, including one halfway around the globe in Antarctica."},{
"Precedents for such seismological signals existed in the scientific literature going back more than a decade. Landslides in closed water basins had produced a back-and-forth sloshing motion, known as a seiche, yielding a monochromatic seismic signature similar to the 2023 one."
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