Mega-Tsunamis That Shook the World for 9 Days Revealed in New Satellite Images

Scientists have finally solved the mystery behind two strange events that shook the entire planet for nine days straight. Their findings close the book on a years-long effort to trace the seismic signals back to their source. In September 2023, global seismometers detected something strange. The Earth was experiencing minor tremors every 90 seconds—and the shaking went on for nine days. One month later, it happened again. Scientists were baffled, as natural tectonic processes couldn’t explain the anomalies. After roughly a year of scientific sleuthing, two studies published in 2024 independently hypothesized that the shaking resulted from two huge landslides, setting off two “mega-tsunamis” in the Dickson Fjord in East Greenland. These enormous standing waves—or seiches—sloshed back and forth inside the fjord and triggered small movements within the Earth’s crust, they posited. It was an intriguing possibility, and both studies presented compelling evidence to support their claims. ... Read full article.