Last September, a 1,200-meter-high mountain peak collapsed in Greenland after the glacier supporting it from below melted. The resulting landslide triggered a 200-meter high tsunami that sent shockwaves reverberating across the planet for over a week (earthquakes only last minutes to hours by comparison). #tsunami #DicksonFjord
theguardian.com/environment/20…
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Mark Ingalls
in reply to Fiona Gregory • • •