Earth Shook Every 92 Seconds for 9 Days — Here’s Why

On September 16, 2023, seismometers around the world detected something scientists had never seen before: a mysterious signal repeating every 92 seconds. It continued for nine days. The source was eventually traced to a remote fjord in East Greenland, where millions of cubic metres of rock and ice had crashed into the water, creating a megatsunami roughly 200 metres high. But the landslide itself lasted only minutes—so what kept the Earth shaking for more than a week? The answer was hidden inside Dickson Fjord. This is the story of the giant landslide, the extraordinary wave trapped between the fjord's walls, and how scientists pieced together one of the strangest seismic mysteries ever recorded. #Greenland #Tsunami #Megatsunami #Earthquake #Science #Geology #Documentary #ClimateChange #Seismology #Earth