Siberian crater may have been caused by methane gas, scientists say
Scientists say cause of Siberian crater may be methane, a greenhouse gas far worse than CO2
Researchers have long contended that the epicentre of global warming is also farthest from the reach of humanity.
It's in the barren landscapes of the frozen North, where the sun barely rises in the winter and temperatures can plunge dozens of degrees below zero. Such a place is the Yamal Peninsula in Siberia, translated as "the ends of the Earth".
Many have heard of the crater on the Yamal Peninsula that suddenly appeared, yawning nearly 65 metres in diameter.
There's now a substantiated theory about what created the crater. And the news is not good.
It may be methane gas, released by the thawing of frozen ground. According to a recent Nature article: "Air near the bottom of the crater contained unusually high concentrations of methane - up to 9.6 per cent - in tests conducted at the site on July 16, says Andrei Plekhanov, an archaeologist at the Scientific Centre of Arctic Studies in Salekhard, Russia.
"Plekhanov, who led an expedition to the crater, says that air normally contains just 0.000179 per cent methane."
The scientist said the methane release might be related to Yamal's unusually hot summers in 2012 and 2013. "As temperatures rose, the researchers suggest, permafrost thawed and collapsed, releasing methane that had been trapped in the icy ground," the report said.