Scientists Say Greenland Just Opened Up a Major New ‘Floodgate’ of Ice Into the Ocean
Source: Washington Post
Scientists Say Greenland Just Opened Up a Major New Floodgate of Ice Into the Ocean
By Chris Mooney November 12 at 2:00 PM
As the world prepares for the most important global climate summit yet in Paris later this month, news from Greenland could add urgency to the negotiations. For another major glacier appears to have begun a rapid retreat into a deep underwater basin, a troubling sign previously noticed at Greenlands Jakobshavn Glacier and also in the Amundsen Sea region of West Antarctica.
And in all of these cases, warm ocean waters reaching the deep bases of marine glaciers appears to be a major cause.
The new fast-moving glacier is the Zachariae glacier or Zachariæ Isstrøm, located in the far northeastern part of Greenland. In a new paper in Science, Jeremie Mouginot of the University of California-Irvine and his colleagues find that the ocean-based glacier, which contains 0.5 meters or a foot and a half of potential sea level rise, has begun a rapid retreat, especially since 2012. The glacier has lost fully 95 percent of the ice shelf that used to help stabilize it, they say, and now sports a 75 meter high ice cliff extending above the water (the glacier also extends hundreds of additional meters below it).
This is sort of the second major floodgate from Greenland that has opened up, says Eric Rignot of UC-Irvine and NASAs Jet Propulsion Laboratory, one of the authors of the study. The first, says Rignot, was the Jakobshavn glacier, Greenlands fastest moving, according to a recent study, which is currently based 1,300 meters below sea level and also retreating into a deep basin.
Read more: https://www.washingtonpost.com/news/energy-environment/wp/2015/11/12/scientists-say-greenland-just-opened-up-a-major-new-floodgate-of-ice-into-the-ocean/
Goblor
(163 posts)Obama ... Oh, wait!
Otherwise your screen name would have to be Goober.
CatWoman
(79,302 posts)tzar paul
(50 posts)FLPanhandle
(7,107 posts)Before it's a underwater front home.
Wilms
(26,795 posts)Doctor_J
(36,392 posts)Elmer S. E. Dump
(5,751 posts)Live and Learn
(12,769 posts)blackspade
(10,056 posts)restorefreedom
(12,655 posts)at some point (if not already), the acceleration of ice loss will be unstoppable. then we are truly attached to another object on an incline plane wrapped helically around an axis.
Ilsa
(61,695 posts)restorefreedom
(12,655 posts)Elmer S. E. Dump
(5,751 posts)restorefreedom
(12,655 posts)StevieM
(10,500 posts)niece and nephews will be inheriting.
restorefreedom
(12,655 posts)never imagined myself saying that even with all the times i heard it said.
PasadenaTrudy
(3,998 posts)wordpix
(18,652 posts)mak3cats
(1,573 posts)tabasco
(22,974 posts)A world in which I do not wish to live.
Elmer S. E. Dump
(5,751 posts)WillyT
(72,631 posts)allan01
(1,950 posts)Cassiopeia
(2,603 posts)It's long past time for us to redirect our resources from the ME to funding alternative energy.
I'm sick of killing for profit while we ignore our real problems.
tecelote
(5,122 posts)Absolutely. In more ways than one!
Cassiopeia
(2,603 posts)We kill so many in so many ways for profit while the planet dies right beneath our feet.
No Bernie, no change. I'm not sure how much Bernie can actually pull off, but he's the only one running that I trust to even TRY.
Elmer S. E. Dump
(5,751 posts)Hydra
(14,459 posts)Interesting times. I heard one DUer say he was going to space when questioned about the infinite growth thing. Maybe we can get all the Galters to do that.
wordpix
(18,652 posts)Maybe they're saving their warbucks for something besides art. There's a slight change in the wind
mountain grammy
(26,624 posts)The story of the century.
Martin Eden
(12,870 posts)... even if all the deniers were booted out of office and we made cutting GG a national priority.
jtuck004
(15,882 posts)Response to Martin Eden (Reply #20)
1000words This message was self-deleted by its author.
ellenrr
(3,864 posts)some say it can be "mitigated".
If you listen and read carefully you can see scientists no longer talk about avoiding climate chaos.
More and more 'moderate' sources like Salon and HuffMo - not exactly extreme in their reporting - are publishing pieces indicating that the window of opportunity is gone.
http://www.huffingtonpost.com/louise-leakey/human-extinction_b_3543036.html
A good source on climate reporting is:
Dahr Jamail
http://www.truth-out.org/news/item/28864-species-extinctions-human-chronic-disease-on-the-rise-as-climate-disruption-mounts
I think if any mitigation can be done, it will be slight and meaningless.
This is the time, imo, to be honest as a human race and acknowledge that we have fucked up royally.
Not that I expect to ever see it.
But I think of the words of Phil Ochs, "At the end end, even treason is worth a try."
In this case "treason" is to tell the truth,
which most people cannot hear.
For example this man tells the truth and the science backs him up:
Scootaloo
(25,699 posts)Friend, we dpn't ven have a chance of slowing down. reversing? Oh be still my beating heart!
GliderGuider
(21,088 posts)Lodestar
(2,388 posts)Don't know how all that works but makes sense to me.
Recursion
(56,582 posts)And glacier melt cools the ocean, which makes the ocean fall some (so far rising sea levels are mostly from thermal expansion).
The precise effects of a given glacier's breaking up can be difficult to predict.
Javaman
(62,530 posts)It's an old article but I think still relevant...
Retreating Glaciers Spur Alaskan Earthquakes
http://www.nasa.gov/vision/earth/environment/glacier_quakes.html
Scientists at NASA and United States Geological Survey (USGS) are using NASA satellite and global positioning system receivers, as well as computer models, to study movements of Earth's plates and shrinking glaciers in southern Alaska. Glaciers here are very sensitive to climate change. Higher temperatures and changes in precipitation over the last 100 years appear to be contributing to an increase in glacier melting in the area.
Southern Alaska is also prone to earthquakes because a tectonic plate under the Pacific Ocean is pushing into the coast, building up lots of pressure. The weight of a big glacier on top of these earthquake active areas can help keep things stable. But, as the glaciers melt and their load on the plate lessens, there is a greater likelihood of an earthquake happening to relieve the large strain underneath. Even though shrinking glaciers make it easier for earthquakes to occur, the forcing together of tectonic plates is the main reason behind major earthquakes.
tabasco
(22,974 posts)So, we don't really have that going for us.
MH1
(17,600 posts)Which might be just fine for human civilization. Or not. We really have no way of knowing.
Mass migrations, on the other hand, combined with depleted resources, point to escalation of conflict throughout the world. Combined with accelerating access to highly efficient technologies for killing other people, and/or general destruction ....
well I think you get the picture.
leftyladyfrommo
(18,868 posts)Just wondering.
Elmer S. E. Dump
(5,751 posts)bahrbearian
(13,466 posts)Blue_Tires
(55,445 posts)GreatGazoo
(3,937 posts)Kennah
(14,276 posts)kydo
(2,679 posts)Who ya think the repugs will blame and scream cover up and demand more hearings, for that, Obama or Clinton?