0
0
0
It started with a melting glacier that set off a huge landslide, which triggered a 650-foot high mega-tsunami in Greenland last September. Then came something inexplicable: a mysterious vibration that shook the planet for nine days. Over the past year, dozens of scientists across the world have been trying to figure out what this signal was. Now, they have an answer.
It's called a "cascading hazard," said Kristian Svennevig, a geologist at the Geological Survey of Denmark and Greenland. And it all started with human-caused climate change.
For years, the glacier at the base of a huge mountain towering nearly 4,000 feet above Dickson Fjord had been melting, as many glaciers are in the rapidly warming Arctic.
As the glacier thinned, the mountain became increasingly unstable before it eventually collapsed on September 16 last year, sending enough rock and debris tumbling into the water to fill 10,000 Olympic-sized swimming pools. The subsequent mega-tsunami — one of the highest in recent history — set off a wave which became trapped in the bendy, narrow fjord for more than a week, sloshing back and forth every 90 seconds.
Tap the link in @cnn bio for more.
📸 : Danish Army
