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NASA Discovers Mantle Plume That's Melting Antarctica From Below (newsweek.com)
schwit1 shares a report from Newsweek: Researchers at NASA have discovered a huge upwelling of hot rock under Marie Byrd Land, which lies between the Ross Ice Shelf and the Ross Sea, is creating vast lakes and rivers under the ice sheet. The presence of a huge mantle plume could explain why the region is so unstable today, and why it collapsed so quickly at the end of the last Ice Age, 11,000 years ago. Mantle plumes are thought to be part of the plumbing systems that brings hot material up from Earth's interior. Once it gets through the mantle, it spreads out under the crust, providing magma for volcanic eruptions. The area above a plume is known as a hotspot.
[I]n a study published in the Journal of Geophysical Research: Solid Earth, Seroussi and colleagues looked at one of the most well studied magma plumes on Earth -- the Yellowstone hotspot. The team developed a mantle plume model to look at how much geothermal heat would be needed to explain what is seen at Marie Byrd Land. They then used the Ice Sheet System Model (ISSM), which shows the physics of ice sheets, to look at the natural sources of heating and heat transport. This model enabled researchers to place "powerful constraint" on how much melt rate was allowable, meaning they could test out different scenarios of how much heat was being produced deep beneath the ice. Their findings showed that generally, the energy being generated by the mantle plume is no more than 150 milliwatts per square meter -- any more would result in too much melting. The heat generated under Yellowstone National Park, on average, is 200 milliwatts per square meter.
[I]n a study published in the Journal of Geophysical Research: Solid Earth, Seroussi and colleagues looked at one of the most well studied magma plumes on Earth -- the Yellowstone hotspot. The team developed a mantle plume model to look at how much geothermal heat would be needed to explain what is seen at Marie Byrd Land. They then used the Ice Sheet System Model (ISSM), which shows the physics of ice sheets, to look at the natural sources of heating and heat transport. This model enabled researchers to place "powerful constraint" on how much melt rate was allowable, meaning they could test out different scenarios of how much heat was being produced deep beneath the ice. Their findings showed that generally, the energy being generated by the mantle plume is no more than 150 milliwatts per square meter -- any more would result in too much melting. The heat generated under Yellowstone National Park, on average, is 200 milliwatts per square meter.
Clearly if Trump remained committed to a bimbo of a deal, none of this would've happened.
Before the Russian orange monkey puppet stole the election, NASA had real scientists who wouldn't publish bad science to hide the temperature increases.
With the declining standard of news on this website, we should highlight the news which is nerd worthy.
Until a gamma-ray burst or a wandering black hole takes us ALL out. Or maybe just a stay rock or "lone-wolf" terrorist messes up your day.
This issue is a bit more complicated than you think.
It makes little difference if Trump personally supports the Paris agreement or not, since it was an aspirational target, the states, companies and people still support it. The people who implement it, still implement it.
He can say "we withdraw" but who exactly is following him?
He doesn't *lead* on anything, he spouts whiney crap on Twitter, but the Republicans don't phrase the laws to match his negativity, and the courts don't let him unilaterally annul those laws. Nobody follows him, except a few Russia trolls and a few gullible people in the middle states. Russian trolls and Hannity-gullibles were not the implementors of solar and energy efficiency measures anyway.
Actually do something positive? That was never his thing, he was always the "government is stupid and incompetent" whiney/loser man, and that doesn't change. If he supported the Paris agreement, what actually would he have done? Complain about big governments failure to tackle CO2 levels??? Blame Senator Corker or McCain?
The best he can do is obstruct/delay, like he's done with the Russian sanctions package. Him saying "I'm the leader" doesn't make him a leader if nobody follows him.
... but I’m not sure what’s going on with the idiots posting further up in this discussion.
In addition to Yellowstone, there’s the plume responsible for the Hawaiian Islands. Interestingly, as the tectonic plate shifts, the plume remains more or less in the same place below it. Currently it’s under the Big Island (obviously); you can see the direction that the plate is moving by looking at the chain of islands.
#DeleteChrome
Almost every day, new scientific evidence is found that supports one side or the other. The debate is always evolving. This is very interesting!
We have our proof at last that global warming IS melting the ice caps.
"We receive as friendly that which agrees with, we resist with dislike that which opposes us" - Faraday
Stuntaz?
/Tru Pimpin
Removing millions of tonnes of ice over huge portions of land has know consequences. It caused the upthrust of central North America. At the end of the last ice age it also caused a drastic rise in sea level. If tectonic upthrust created by the loss of the Antarctic ice cap can trigger a volcanic reaction in the proported mantle plume there, then it is possible that mankind could soon see a major event that reshapes our coast lines with a very sudden rise in sea levels.
Much is not known about the mantle plum under the ice as yet, for instance how large it really is. For all we know it might be more of a zit than a pimple full of puss, However if it is as large as the pimple in Italy or the mega pimple at Yellow Stone, it could burst with enough energy to create one hell of a rough ride for much more than just the worlds penguin population. Add on top of a sudden increase in sea level the effects of global warming the price of real estate in the Ozarks and the bush will increase drastically. Just maybe the red neck survivalists already heading for the hills and stocking up on amo are on to something, having good credit means squat when the price of real estate is beyond anyone without the use of fire arms.
It doesn't matter whether the previous excuse was "solar cycles", "a tail end effect of the ice age" or "god is punishing us for gays" or "because cities have been built around the weather stations causing local city warming that's fooling the climate scientists (who have full satellite data FFS)"....
Each time the reason shifts, its really acknowledgement of the previous denial claims faults. That's positive. They may not want to face the reality of it, or the consequences, denial is human nature, and you can't really overcome human nature overnight. But this is a step in the right direction.
All things that melt the Antarctica is AGW - non Deniers know this to be true.
Huge upwelling of hot rock under Marie Byrd Land is caused by Climate Change.
If you didn't know that you must be a Denier.
Climate is now changing 1 degree per hour!!
As the Sun cums up, temperatures rise an average 1 degree per hour.
As the Sun cums down, the globe cools average 1 degree per hour.
Awe nooo! This is making me feel all crispy.
p.s. Can I have a bacon sandwich to top it all off?
That supervolcanos are powered by pollution? Hmmmm...Liberal hippies? Any comments?
According to the EIA the cost of most renewable technologies is now lower then many fossil fuel based technologies. Levelized Cost and Levelized Avoided Cost of New Generation Resources in the Annual Energy Outlook 2017
still it is going to take a while to build out, and develop the load following technologies.
There isn't much we know about Earth's internal heat & mass flow. There's not much consensus about where magma comes from (not that I mean to suggest that it's thought that it has only one source). The Earth is not a ball composed of well differentiated layers (Crust, Mantle, Upper Core, Inner Core, etc.) in fact, it turns out, its a really BIG place with a composition that varies over time and space. Mechanics follows chemistry. Heck, we still don't know how long the Earth's dynamo will persist...speaking of extinction level events...
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I can afford the moderation, but you Trumpanistas only have so many mod points to spend. If I jump on that grenade now, you can't throw it at someone else who can't take the hit.
"You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
This proves that climate change is a natural occurrence that comes in cycles. Politicians were just trying to tug our heart strings for more tax money.
...and I do think that we have had a relatively small impact that could be quite harmful for our own survival.
However, the earth has far more varied climate phases than we have seen in our current icehouse.
is totally stoopid!!!!!!!! Because it makes people arrogant enough to think we are controlling the environment!!!!!!
Step 1) Humanity needs to make sure and minimize our footprint, so that we are not stressing a semi stable but turbulent system.
Step 2) Humanity must walk back all the stooooooooopid shite we have done to the environment, & cross our fingers that it isn't too late. Or that some random shite shift doesn't jump in before we can undo all of our efforts before they take effect.
Step 3) Continue to do this while bringing every 2 bit power biatch who thinks they control the world to a very small table. And have it beat into them & there farking offspring (who might want their power / money); that no you are not the masters and the game board is not static. If we keep believing it is, taking our environment for granted............. Cascading failure / systemic failure is our future, as it has been our past.
For the steps 1&2, humanity will have to accept harsh judgements across the board. For brevity, just use your most dystopian fantasies.
For step 3, the selfstyled masters of the universe are gonna need to get a consistent but random boots up their arses.
W/ great power comes great resonsibility, & a fark ton of boots kicking your arses.
This should be the 11th commandment.
This is my yearly rant, spread the word before it is too late. Which it might already be. We must start doing this NOWWWWWWWWW!!! Or the problem will fix itself.
Say it with me! GROBAR WALMING!
Oh the ice caps are melting! It's humanity's fault! Yup! All you fuckin' EEEVIL humans! Fuckin' the world up for germs and lampreys and cockroaches!
What you need to do is go back to huddling in caves and dying of stuff that's preventable with modern medicine!
Just curious how this may change the current thoughts on climate change impact on artic ice. TFA is pretty quiet about climate science. Perhaps theyâ(TM)re just scrambling?
Chewbacon
The Bible is like Wikipedia: written by a bunch of people and verifiable by questionable sources.
It has taken way too long to scroll down to this first on-topic post. But correcting the moderator system to limit the damage by paid trolls is another topic.
I have a serious question about the Antarctic mantle plume(s):
The Erebus plume under Ross Island has been documented ever since the International Geophysical Year (IGY) of 1957 and probably earlier. So has a second plume been discovered in the same area? Or is this story about confirmation of what was already known? WTF?
Hopefully answers to this question will not get drowned by the paid trolls (and what I suspect may be paid troll fighters who keep the sewer floodgates open).
The Antarctica Treaty prohibits travel by sea or air below parallel 60 South. The Antarctica Treaty was created to prevent discovery of the outer areas of the Flat Earth. Just afterward, the Outer Space Treaty was also created in preparation for the great faking of Space.
Territorial claims in Antarctica are pie-shaped; each country gets a certain angle, heading inward and terminating at the 'south pole.' No requirement that the country actually reached it, or occupied any of the land in between. This has never been done before; it is done because Antarctica is actually an outer ice-wall, not a continent. The 'south pole' does not exist.
Space is fake. The Earth is flat. The edge can't be found, because it is illegal to go there.
The ice melting is do to BP injecting 400 degree water into the oil wells to heat the thick oil recovery ( Prudhoe Bay ) . Watched it go on for 15 years , global warming my ass you jerks !!!!!!
I blame Newcomen and Watt.
There's no time like the present. Well, the past used to be.