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I get that the volcanoes could exacerbate climate change's effects, but how much effect might these volcanoes have on climate change already? The following sug
by tenkabuto 9y ago
I get that the volcanoes could exacerbate climate change's effects, but how much effect might these volcanoes have on climate change already?
The following suggests that volcano activity followed from their uncovering by ice sheets, but might the causality of such be flipped?
> he pointed to one alarming trend: “The most volcanism that is going in the world at present is in regions that have only recently lost their glacier covering – after the end of the last ice age. These places include Iceland and Alaska.
> “Theory suggests that this is occurring because, without ice sheets on top of them, there is a release of pressure on the regions’ volcanoes and they become more active.”
- foobarbecue 9y agoThe causality is bidirectional; it's a positive feedback. Does that answer your question?
- deleted 9y ago[deleted]
- 0xbear 9y agoExcept, of course, _Antarctic_ ice sheet just keeps growing. https://www.nasa.gov/feature/goddard/nasa-study-mass-gains-of-antarctic-ice-sheet-greater-than-losses https://www.nasa.gov/feature/goddard/nasa-study-mass-gains-o...
- slg 9y agoThere is some doubt around the study you linked. A followup study concluded the original overestimated growth by 3x and that the ice sheet is in fact shrinking. https://phys.org/news/2017-05-growth-east-antarctic-ice-sheet.html https://phys.org/news/2017-05-growth-east-antarctic-ice-shee...
- 0xbear 9y agoThere is always "doubt" in science. That's why it's science and not religious dogma. Who was right, however, still remains to be determined.
- Numberwang 9y agoYour previous post was stated as a fact..
- 0xbear 9y agoSo was the reply. I didn't know about that other study. I also have no reason to believe it is more (or less) authoritative than the NASA study. Most people don't actually know that the Antarctic (unlike the Arctic) ice sheet is not rapidly receding.
- heisenbit 9y agoRight, it is not receding. The breaking up of Larsen-C last month did not happen. Antarctica is much thicker. Of course it recedes slower.
- mercer 9y agoWell thanks for clearing that up for us!
- credit_guy 9y agoJust to put things in perspective: both those studies talk about gains/losses of less than about 100 GT/year, while the total mass of the Antarctic ice sheet is about 25 million GT. http://www.antarcticglaciers.org/antarctica/east-antarctic-ice-sheet/ http://www.antarcticglaciers.org/antarctica/east-antarctic-i...