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Geothermal Heat Contributing To West Antarctic Ice Sheet Melting
bricko sends this news from The University of Texas at Austin:
Thwaites Glacier, the large, rapidly changing outlet of the West Antarctic Ice Sheet, is not only being eroded by the ocean, it's being melted from below by geothermal heat, researchers at the Institute for Geophysics at The University of Texas at Austin (UTIG) report in the current edition of the Proceedings of the National Academy of Sciences. The findings significantly change the understanding of conditions beneath the West Antarctic Ice Sheet, where accurate information has previously been unobtainable. The Thwaites Glacier has been the focus of considerable attention in recent weeks as other groups of researchers found the glacier is on the way to collapse, but more data and computer modeling are needed to determine when the collapse will begin in earnest and at what rate the sea level will increase as it proceeds. The new observations by UTIG will greatly inform these ice sheet modeling efforts.
And queue the alarmists that will take every little thing and blow so moronically out of proportion that it bears no resemblance to the data or science.
Both sides are enemies of reason and science. If you have a vested emotional interest in a given conclusion and are inclined to ignore evidence that contradicts that position or inclined to exaggerate/fabricate evidence that supports your position then you're an enemy of reason and science.
And BOTH sides of this issue have lots of those people.
There is a moderate middle that just wants to hear the science and deal with this in a reasonable fashion. But they're shouted down by the fanatics on either side that scream "YOU"RE WITH US OR AGAINST US" while foaming at the mouth like diseased animals.
That is what needs to stop. This issue have been hijacked by political interests... left and right when really it should supersede the factional struggles in our political system.
Global warming is not an issue to be used to profit the political ambitions of democrats or republicans. Socialists or capitalists... or any other label you'd prefer.
Global warming must be an issue that is dealt with in a respectful, bipartisan, and transparent fashion.
Anything short of that and any claim to scientific purity is GONE. Utterly irrelevant. It becomes nothing more then a political struggle with the issue of truth being irrelevant to the process. Power politics against power politics. One screaming stupid face against another screaming stupid face... the winner being decided by who can shout louder and longer.
Choose.
Do you want this to be about science or do you want this to be about who can yell louder? Because if you want it to be about science, the politics need to be put away.
And for that, you're going to have to stop trying to twist people's arms and ACTUALLY convince them. Which will mean compromises and respect for contradiction. It will mean going through a long drawn out process where there is no roughshodding, steamrolling, or other terms for the attempt to push things through without going through due process.
Will this take awhile? How fast is the currently process going? What we have no is sort of like stop and go traffic. Everything rushes forward for a moment and the alarmists think they've suddenly broken through. Only to have the whole thing either stop or outright reverse itself taking away most of those gains. Graph the progress over time and its not going fast if its going at all.
So why not try something else? It can't be slower then what you already have and you might find it more pleasant to actually talk respectfully with people rather then try to undermine their very right to participate in the process at all.
I've decided to stop wasting my time responding to AC trolls/sockpuppets... so if you want a response from me... login.
You don't have it straight yet. That would require reading the source article, which you obviously have not done. The study shows that geothermal heat is CONTRIBUTING to the melting, not the sole cause. The warming ocean is causing the surface melt, while it appears that geothermal heat may be melting the underside, increasing instability. There is not a word in the article that contradicts AGW. Sorry to disappoint you.
First of all reducing the AGW debate to "both sides" with a neutral "middle ground" is disingenuous - in the count of number of people the balance is very strongly in favor of accepting AGW to degrees ( e.g. this recent set of studies arriving at between 91-97% consensus ). The denialists get disproportionate attention, which is actually a known type of political manipulation (e.g. argument to moderation) and this type of attention has been shown to disproportionately affect people who aren't specialized in the subject matter to moderate their position when no such moderation is required (more on this subject, though I can't find the scientific paper about it right now.
Second, appeal to "scientific purity" is overshooting. Science is constantly advancing, improving models, replacing wrong assumptions with less wrong assumptions. There is nothing "pure" about it, and in no way does it need to be to advance the cause and be useful to our lives. Words such as "purity" are much too loaded to be used, exactly because of the scientific approach. There's no need to deny - the scientific world does not have all the T's crossed and the I's dotted on AGW, just as it doesn't on gravity, physics and quantum theory, but we still happily cross bridges every day. The degree of certainty has long reached sufficient levels to warrant seriously looking at how to realistically (not politically, stupid carbon credits) mitigate instead of discussing a black and white position on AGW's existence.
And thirdly the AGW debate is much bigger than the USA. I understand that you have bipartisan issues across the board (not just AGW, and to be clear: I think both parties are in the wrong) but that doesn't extend to the rest of the world and this is a global issue.
So I think that while I don't entirely agree with your argumentation, I agree with your position. AGW is a science thing - and science has agreed that it exists though not to which degree. The challenge is to find solutions, and that's also with science.
Finally, I find the actual article very intriguing and somewhat challenging to my own views on AGW, as evidenced by my first thoughts on this: could it be that the geology of the antarctic is becoming destabilized because of the lessening of the weight of the ice sheet, in turn causing more geological activity? But that's a conjecture from an explanation that wouldn't challenge AGW, and real science must of course also look for other hypotheses.
No [r] way!
Kenya imagine a worse country-name pun than that?
systemd is Roko's Basilisk.
The Thwaites Glacier is melting because of Geothermal heat rather than AGW?
No. It isn't. Read the paper instead of making inferences from a summary that is significantly lacking in details.
Scientists knew there was geothermal heat contributing to base melting of the glacier. Most places on Earth have a tiny amount of geothermal heat flux so underneath most glaciers there some small amount of melting due to this heat. On average, the geothermal flux on Earth is about 65 milliwatts/square meter.
This paper was looking to quantify the geothermal flux under the glacier so that they could model the behavior more accurately. It turns out the the average geothermal flux under the glacier is around 120 milliwatts/square meter with some areas going as high as 200 milliwatts/square meter. This adds a little bit more base melt and thus allows the glacier to move a little bit faster.
Keep in mind, these are milliwatts we're talking about, so it certainly isn't melting a lot. But since it is base melt it is contributing to glacier movement speed. This contributes to the ice loss already occurring due to warmer temperatures.
~X~