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Related: Editorials & Other Articles, Issue Forums, Alliance Forums, Region ForumsMysterious Craters Are Just the Beginning of Arctic Surprises
http://www.scientificamerican.com/article/mysterious-craters-are-just-the-beginning-of-arctic-surprises/Mysterious Craters Are Just the Beginning of Arctic Surprises
Researchers are rethinking century-old observations as they witness the unexpected and peculiar perils that are emerging from thawing Arctic permafrost
Aug 5, 2014 |By David Biello
It's not just craters purportedly dug by aliens in Russia, it's also megaslumps, ice that burns and drunken trees. The ongoing meltdown of the permanently frozen ground that covers nearly a quarter of land in the Northern Hemisphere has caused a host of surprising arctic phenomena.
METHANE ESCAPE: As the permafrost melts, more and more methane bubbles out of the Arctic, as seen here in a thermokarst lake.
Courtesy of Miriam Jones / USGS
Temperatures across the Arctic are warming roughly twice as fast as the rest of the globe, largely due to the reduction in the amount of sunlight reflecting off of white, snow-covered ground. "At some point, we might get into a state of permafrost that is not comparable to what we know for 100 years or so, some new processes that never happened before," says geologist Guido Grosse of the Alfred Wegener Institute for Polar and Marine Research in Germany.
The mysterious craters in far northern Russia are just such an example. "There is nothing described in the scientific literature than can really, fully explain those craters," says Grosse, who is headed to the Lena River Delta in Siberia this summer, which hosts a joint German-Russian research station. The most likely explanation for the newly discovered craters in Russia is an accumulation of methane over centuries or more that then burst out of the thawing ground sometime in the last few years. "High pressure built up and [the ground] literally popped open," explains biogeochemist Kevin Schaefer of the U.S. National Snow and Ice Data Center. "If it is indeed caused by melting methane ice, we should expect to see more."
These craters will then become lakes, which further thaw the permafrost around and beneath them as the water traps yet more heat from the sun. Similar new lakes are forming in depressions in the newly thawing lumpy landscape across the Arctic known as thermokarst. Such thermokarst lakes and surrounding marshes create the muddy conditions favoring microbes that break dead plant material down into methane. That methane then bubbles out of the lakes and ground and, where concentrated, can even be lit on fire, leading to cases of flames dancing above the ice.
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Garthem
(128 posts)Rec
redqueen
(115,103 posts)malaise
(269,103 posts)and we don't know how this ends
Amonester
(11,541 posts)Looks like it's a natural process that happens every 100 million years or so...
Earlier, this time, since humans have the brain it takes to accelerate it, but use it to throw bombs, grenades, missiles, nukes and the like at each other's children instead of making sure the only home we have remains clean and inhabitable...
snooper2
(30,151 posts)tclambert
(11,087 posts)I just can't hear what it is over all the propaganda noise from oil companies. I think I heard the words Permian and Triassic. Anybody know what that's about?
Magleetis
(1,260 posts)think this will end in the second coming. I think that is one reason they deny the science behind it.
jwirr
(39,215 posts)their actions. Their god does not seem to have anything to do with it. What I am trying to say is that they are trying to force the end on God.
When God's return is in his hands then I can deal with it but they think they are the movers and shakers of the end times and in doing so they are destroying the world we live in to fit their ideas.
What are they going to do when he does not return and they have created an unlivable world?
calimary
(81,383 posts)They think they can MAKE Jesus come back. On THEIR schedule. Not His.
That's not what the Bible tells us, btw. NO ONE may know the hour. THAT'S what the Bible says.
But the james watts of the world (reagan's industry-sympathizer, free-market-jizzmaster, fundamentalist "Christianist" "interior" secretary - GOD FORBID!!!!) sat there at that Congressional hearing I will NEVER forget as I watched - and wide-eyed and dead-serious, stated "when the last tree is felled, Jesus will come back."
THAT was the mentality brought to the Interior Department by that Beast-of-Beasts, ronald reagan. HIDEOUS!!!
jwirr
(39,215 posts)Phlem
(6,323 posts)Anyone who is paying attention knew this would happen. It's been covered in Scientific American for years. I've seen countless articles on the web. What you should expect are more of these when the climate gets warmer therefore exacerbating our climate issues.
We are currently in an extinction period.
We needed to start curbing our emissions years ago.
-p
redqueen
(115,103 posts)deathrind
(1,786 posts)Blue_In_AK
(46,436 posts)around Alaska when we've been camping. It's an interesting phenomenon, but kind of scary.
redqueen
(115,103 posts)Sunlei
(22,651 posts)Wonder what happens when the atmospheric methane gets very concentrated and then reacts to UV light?
The chlorine rains begin?
truedelphi
(32,324 posts)There are half dollar sized etchings of bleached out leaves on many of the bushes in my back yard. Since these are well watered, why would this be the case.
Then when I go hiking, I notice leaves on trees at above the fifteen foot mark are also saturated with bleached out spots on their coloration. The bleached out spots are about the size and shape of a half dollar.
Why? For a while, i told myself the local water treatment plant uses too much chlorine, but no one is using any water to water the leaves of tall trees out in the woods. (We are in the middle of a drought, and even when we aren't in a drought, nobody waters the forests.)
VA_Jill
(9,990 posts)Another way of looking at it.
chervilant
(8,267 posts)Yeah, but, but, global warming was invented by Al Gore so he could make more money!!!