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In September 2023, a global seismic mystery began to unfold. Every 90 seconds, the Earth pulsed with a strange, low-frequency ...

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A tsunami struck a fjord in East Greenland in 2023, ringing seismometers for nine straight days. A new satellite study ...

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Seismic Waves' Mysterious Race Inside Earth Explained ETH Zurich Earthquakes, volcanic eruptions, shifting tectonic plates - these are all signs that our planet is alive.

For example, S-waves cannot travel through water and move at a slower speed than P-waves. Therefore, the presence, absence, and arrival time of S-waves can determine what the subsurface looks like.

Seismic waves are a bit like music. Identify their notes and rhythm changes, and scientists can work out what subterranean instruments created them, where they lie, and how they behave upon rupture.

Scientists recorded a seismic event so strange that they named it a USO—unidentified seismic object. It reverberated around the world for a staggering 9 days.

In September 2023, earthquake-detection equipment around the world picked up a signal that lasted nine days. A new study shows the signal was produced by a landslide into a Greenland fjord, which ...