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I hate to say this is old news, but it is. this acceleration effect has been frequently documented. Not that I'm downplaying it in any way but the Indy front-paged it like it was news and I thought that was fraudulent.

Heck I've even seen TV programmes where they set fire to russian lakes. Which actually may be a good idea in the long term. that or harvest the stuff.

keep to the Fen Causeway

by Helen (lareinagal at yahoo dot co dot uk) on Tue Sep 23rd, 2008 at 07:13:50 AM EST
[ Parent ]
this acceleration effect has been frequently documented.

Do you mean as actually happening rather than predicted, and do you mean oceanic methane [the vast bulk of methane potewntially released]? Can you find sources?

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Tue Sep 23rd, 2008 at 09:27:18 AM EST
[ Parent ]
Yes, although more as demonstrations on TV programmes like the one I mentioned where they set fire to a lake for fun (it practically exploded). So it's beginnning to happen, although they did say on the prog that it'd need to be a bit hotter to really begin to race away there.

I meant both permafrost capped methane as well as the oceanic stuff.

As to sources, jeez.....I thought it was common knowledge. I just googled permafrost methane and got a lot of hits going back a while. Undersea Methane hydrate is an issue as well, usually used as an explanation for ship losses in the "Bermuda Triangle". there are also similar phenomena in the North Sea called "Witching holes"

keep to the Fen Causeway

by Helen (lareinagal at yahoo dot co dot uk) on Tue Sep 23rd, 2008 at 10:36:31 AM EST
[ Parent ]
Ah, that's what you mean. Yes, there is methane release from permafrost and there are the explored holes on the floor of the North Sea with sunken ships in some of them.

But it's not that methane releases would ever go back to zero. Note that there are opposed trends: methane itself will fall apart in reactions in the atmosphere, with the carbon in it usualy ending up in CO2; while via microbes munching on ocean-absorbed CO2, methane gets back into clathrates.

So what we are talking about is a significant tip of the balance, a greatly increased rate of methane releases. A few years back, there was a(n I believe British) study saying that methane release from moors is increasing across the world (don't know if and how well it held up against peer review, will have to look up), so I thought you meant that.

*Lunatic*, n.
One whose delusions are out of fashion.

by DoDo on Tue Sep 23rd, 2008 at 01:27:44 PM EST
[ Parent ]
Othersides, what are chances of clathrate guns not firing as their locations are warmed? Do we have evidence of warmings with these sediments staying stable?
by das monde on Fri Oct 3rd, 2008 at 03:23:34 PM EST
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