A massive landslide in Greenland’s Dickson Fjord triggered a tsunami-like phenomenon, generating seismic waves felt worldwide. On September 16, 25 million cubic yards of rock and ice broke free, creating a wave that reached 650 feet high and sent shockwaves across the fjord.
The impact of this tsunami was significant, with research stations damaged worth $200,000. However, what followed was even more astonishing – the water continued to rock the fjord back and forth for days, producing a slow seismic signature unlike anything seen before.
Researchers from over 70 institutions worked together to uncover the source of this global pulse. Their efforts led them to conclude that the mega-tsunami was linked to the landslide-induced wave, which lasted nine days and featured smooth, rhythmic peaks spaced 92 seconds apart.
Satellite technology played a crucial role in this investigation, providing high-resolution images of the fjord and helping scientists track how the tsunami’s waves interacted with the fjord’s topography. This research highlights the importance of next-generation Earth observation satellites in transforming our understanding of dynamic environments like fjords.
The event raises serious concerns about climate change and its impact on the Arctic environment. As global temperatures rise, glaciers and ice sheets are melting at unprecedented rates, destabilizing cliffs and slopes. Researchers warn that this could be just the beginning of an alarming trend, with landslides increasing in frequency and risk of future tsunamis.
Improved early-warning systems combining real-time seismic data with satellite imaging will be crucial for monitoring and responding to these phenomena as more people visit the Arctic for tourism or research.
Source: https://dailygalaxy.com/2025/06/650-foot-mega-tsunami-shakes-the-planet-sending-waves-across-continents