Greenland 2025 Tsunami. Watch some of the special features, stories, interviews and explainers produced by abc news to bring you a clearer understanding of the issues and events that affect you. After examining the data and running simulations, they concluded that the unusually long seismic signal was caused by a landslide in an east greenland fjord that triggered a giant, sloshing tsunami.

Satellite data show the shape of a wave as water. On september 16, 2023, scientists around the world detected a mysterious seismic signal that spread across the entire planet.