According to U.S. maritime industry sources, tanker captains are reporting an increase in onboard alarms from hazard sensors designed to detect hydrocarbon gas leaks and, specifically, methane leaks. However, the leaks are not emanating from cargo holds or pump rooms but from continental shelves venting increasing amounts of trapped methane into the atmosphere. With rising ocean temperatures, methane is increasingly escaping from deep ocean floors. Methane is also 21 more times capable of trapping heat in the atmosphere than carbon dioxide.
In fact, one of the major sources for increased methane venting is the Hudson Submarine Canyon, which extends 400 miles into the Atlantic from the New York-New Jersey harbor. Another location experiencing increased venting is the Santa Barbara Channel on the California coast.
Well now, if methane clathrates are venting, we're in for a fun time. Along with methane released by melting permafrost, this is generally considered to be one of the environmental big scaries, the sort of thing that could radically accelerate climate change toward or over a "tipping point" to an atmosphere that's very much more hostile than just a few degrees of heat and some big fat twisters. Are we witnessing the inital rumbles of the Big Burp?
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Date: 2007-01-10 12:06 am (UTC)There was something published last year in Science suggesting that the big burp may not have been such a historical killer as we've feared. http://dx.doi.org/10.1126/science.1121235 should get you there.
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Date: 2007-01-10 09:09 am (UTC)no subject
Date: 2007-01-10 09:14 am (UTC)Yay for isotope cunningness. I wonder what young-Earth creationists make of isotopes?
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Date: 2007-01-10 09:33 am (UTC)no subject
Date: 2007-01-10 10:54 am (UTC)no subject
Date: 2007-01-10 11:39 am (UTC)no subject
Date: 2007-01-10 12:17 pm (UTC)Lucky Tignes has a varied and increasing programme of summer activities. Expect a pair of Rossy B2s to appear on Ebay sometime soon...
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Date: 2007-01-10 02:54 pm (UTC)no subject
Date: 2007-01-10 03:45 pm (UTC)Does it take more than a minute to explain isotopes? Because anything that takes more than a minute to explain is obviously just dissembling with clever words.
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Date: 2007-01-10 04:42 pm (UTC)Maybe what we need are science preachers, with pulpit thumping and miracles. Voices from on high. Cures for diseases. Oh, shit, we got that already.
Of course, people are going to blame Science for this whole thing. "If it hadn't been for Science," they'll say, "we'd have got along just fine. Now we're suffocating in marsh-gas and the sea level's just swamped my home. Science is bad, hm'kay? Praise be! Deliver us from these scientists, these bad men, these idol-worshippin' prophests of a false God!"
Or something like that.
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Date: 2007-01-10 07:40 pm (UTC)Should make for some interesting surf if it does all melt...
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Date: 2007-01-10 08:16 pm (UTC)But I digress. May have to blag that thar book when I'm next up.