A massive landslide in a Greenland fjord caused a wave that “shook the Earth” for nine days in 2023, the BBC reports. The seismic signal last September was picked up by sensors around the world, leading scientists to investigate where it came from. The landslide – a mountainside of rock that collapsed and brought glacial ice with it – triggered a 200m wave. This wave was then “trapped” in the fjord and moved back and forth for nine days, creating vibrations. Landslides like this one, scientists say, are happening more often because of climate change, as the glaciers that support Greenland’s mountains melt. An international team of scientists and the Danish Navy are involved in the investigation into this incident, which is ongoing and published in the journal Science. “When colleagues first detected this signal last year, it didn’t look like an earthquake. We called it an ‘unknown seismic object,'” recalls Dr Stephen Hicks from UCL, […]
Source: News Beast
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