The Really Scary Thing About Those Jaw-Dropping Siberian Craters

Written by Ari Phillips

Russian scientists have determined that a massive crater discovered in a remote part of Siberia was probably caused by thawing permafrost. The crater is in the Yamal Peninsula, which means “end of the world.” It caught hold of the media spotlight in mid-July when it was spotted by oil and gas workers flying over the area. At roughly 200 feet wide and seemingly bottomless, speculation abounded about the cause with the Siberian Times reporting that, “theories range from meteorites, stray missiles, a man-made prank, and aliens, to an explosive cocktail of methane or shale gas suddenly exploding.”

Since this first discovery, two other smaller craters have been spotted in the surrounding regions, fueling even more armchair conjecture. 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 percent methane.

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. Methane is the primary component of natural gas. The original crater is about 20 miles from a large natural gas plant and the entire Yamal Peninsula is rich in natural gas that is being extensively tapped to help fuel Russia’s natural gas boom.

Hans-Wolfgang Hubberten, a geochemist at the Alfred Wegener Institute in Potsdam, Germany, told Nature that climate change and the slow, steady thaw of the region could be to blame.

“Gas pressure increased until it was high enough to push away the overlying layers in a powerful injection, forming the crater,” he said.

While staring down into the abyss of these craters is a scary thought, the release of large quantities of greenhouse gases from melting permafrost is existentially daunting. A study from earlier this year found that melting permafrost soil, which typically remains frozen all year, is thawing and decomposing at an accelerating rate. This is releasing more methane into the atmosphere, causing the greenhouse effect to increase global temperatures and creating a positive feedback loop in which more permafrost melts.

“The world is getting warmer, and the additional release of gas would only add to our problems,” said Jeff Chanton, the John Widmer Winchester Professor of Oceanography at Florida State and researcher on the study. According to Chanton, if the permafrost completely melts, there would be five times the current amount of carbon equivalent in the atmosphere.

Kevin Schaefer, a permafrost scientist at the National Snow and Ice Data Center, told ThinkProgress that there are actually two sources of GHGs released by melting permafrost: methane hydrates that destabilize when permafrost temperatures rise, as has been the case in Siberia, and frozen organic matter.

“Note that the methane hydrate and the decaying organic matter emissions result from two completely different mechanisms,” said Schaefer. “Methane hydrate emissions come from deep permafrost due to purely physical processes. The decaying organic matter emissions come from near-surface permafrost due to purely biological processes.”

He said that as the permafrost thaws, the organic matter will also thaw and begin to decay, releasing CO2 and methane into the atmosphere. “Published estimates indicate 120 gigatons of carbon emissions from thawing permafrost by 2100, which would increase global temperatures by an additional 7.98 percent,” he said.

Schaefer said the phenomenon of the Siberian craters was a surprise to him because he thought the methane would leak out more slowly. Capturing these large bursts of methane before they enter the atmosphere could be possible, according to Schaefer, however extremely difficult.

“The key is drilling into the permafrost before the methane escapes,” he said. “However, creating the infrastructure just to get to these remote locations is daunting.”

He said that capturing the emissions from decaying organic matter would be impossible.

Ted Schuur, a professor of ecosystem ecology at the University of Florida and leader of the Permafrost Carbon Network, told ThinkProgress that the Siberian craters remind him of ‘hot spots’ of methane bubbling that occur both in lakes and undersea in the permafrost zone.

“This could be a terrestrial version that was previously capped by ground ice in permafrost,” he said. “If indeed they are the result of warming permafrost they could be a significant pathway of greenhouse gas release to the atmosphere. As with other processes in the permafrost zone, abrupt changes appear to be as or perhaps more important than slow gradual change.”

survey of 41 permafrost scientists in 2011 estimated that if human fossil-fuel use remained on a high projection and the planet warmed significantly, gases from permafrost could eventually equal 35 percent of present day annual emissions. In the few years since then, emissions have continued to rise. If emissions are heavily curtailed, greenhouse gases from permafrost could make up as little as around the equivalent of 10 percent of today’s human-caused emissions. This is far lower, but still highly disconcerting.

“Even if it’s 5 or 10 percent of today’s emissions, it’s exceptionally worrying, and 30 percent is humongous,” Josep G. Canadell, a scientist in Australia who runs a global program to monitor greenhouse gases, told the New York Times at the time of the study. “It will be a chronic source of emissions that will last hundreds of years.”

This post originally appeared on ThinkProgress.

Photo Credit: Thinkstock


Warren Webber
Warren Webberabout a year ago

Live long and prosper!

Tricia Hamilton
Tricia Hamilton1 years ago

Please do not tell me that these are 2 petrified bears. When will the USA take care of us instead of spending out tax dollars taking care of other countries which (wish we were dead)?

Marie W.
Marie W.1 years ago

Methane already leaking from Arctic ocean.. game over.

Brett Byers
Brett Byers1 years ago

Help prevent climate change for the cost of a cup of coffee: stop 1000 tons of CO2 emissions by saving acres of rainforest for just a few dollars:

Lynn Rubal
Lynn Rubal1 years ago

Really scary!!!!!

Heather Black
Heather B.1 years ago

Scary stuff!

Leopold Marek
Leopold Marek1 years ago


Deborah J.
Deborah J.1 years ago

Awe-inspiring as it is scary. We may have already sealed the doom of the planet? But so long as the developed world's big spenders only aim for raising their standard of living and resisting regulation, I'm pessimistic about reversing the trend.

Rhonda B.
Rhonda B.1 years ago


Freda Lee J.
Freda J.1 years ago

Accelerating towards the tipping point we are... :(