Scientists have confirmed that two mega-tsunamis in East Greenland’s Dickson Fjord triggered by climate change caused the global seismic waves detected in September and October 2023. The events, dubbed “Unidentified Seismic Objects,” were caused by massive landslides and standing waves called seiches.
Source: https://www.404media.co/the-entire-earth-was-mysteriously-shaking-every-90-seconds-now-scientists-know-why