posted on Aug, 3 2014 @ 09:12 PM
(Apologies if this has been posted.. only did a quick search.)
The Really Scary Thing About Those Jaw-Dropping Siberian Craters
"Russian scientists sent to the site are now providing first-hand data showing that unusually high concentrations of methane of up to 9.6 percent
were present at the bottom of the first large crater shortly after it was discovered on July 16. Andrei Plekhanov, an archaeologist at the Scientific
Centre of Arctic Studies in Salekhard, Russia, who led an expedition to the crater, told The Journal Nature that air normally contains just 0.000179
"According to Plekhanov, the last two summers in the Yamal have been exceptionally warm at about nine degrees Fahrenheit above average. Rising
temperatures could have allowed the permafrost to thaw and collapse, releasing the methane previously trapped by the subterranean ice."
'“Gas pressure increased until it was high enough to push away the overlying layers in a powerful injection, forming the crater,” he said. '
"According to Chanton, if the permafrost completely melts, there would be five times the current amount of carbon equivalent in the atmosphere."