In September 2023, a global seismic mystery puzzled scientists for nine days. New research now confirms it was caused by two mega-tsunamis triggered by landslides in East Greenland. The waves became trapped in a fjord, forming seiches that shook the Earth. Using cutting-edge data from NASA’s SWOT satellite, scientists detected these hidden waves for the first time, solving the mystery and highlighting climate-driven extremes. The study also showcases how advanced satellite technology can uncover remote phenomena invisible to traditional methods, reshaping our ability to monitor Earth’s changing climate and seismic activity.
