“Massive Greenland Landslide Sends Seismic Waves Around Earth for 9 Days”

• On September 16, 2023, seismic stations worldwide detected a strange signal, indicating that earthquakes did not cause the tremors.
• The signal lasted for nine days, indicating that the seismic waves were caused by a massive landslide on the banks of the Dickson Fjord in Greenland.
• The researchers, Stephen Hicks and Kristian Svennevig, classified the wave as a “USO”, an unidentified seismic object.
• The team gathered data from various disciplines, including seismic data, satellite imagery, in-fjord water level monitors, and detailed simulations of the water’s reaction.
• The landslide triggered a submarine landslide, displacing water enough to give rise to a 200-metre-high mega-tsunami.
• The landslide caused damage to an unstaffed research facility on the island of Ella and monuments of cultural and archaeological importance in the area.
• The landslide’s motions rang the earth’s surface like a gong, and the reverberations spread across the globe.
• The ice at the glacier’s foot had supported the rocky slopes, which had been shrinking rapidly due to global warming.
• The tremor is a stark reminder that we are navigating uncharted waters, with melting glaciers leading to tremors and tsunamis happening almost yearly.