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Methane Hydrates: Natural Hazard or Natural Resource? - Perspectives on Ocean Science

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Explore naturally occurring frozen methane deposits under the sea with renowned geochemist Miriam Kastner and discover whether or not they are a hazard to climate change. Series: "Perspectives on Ocean Science" [8/2008] [Science] [Show ID: 14350]
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Text Comments (28)
James Vignali (10 months ago)
Methane Hydrate is Stable in an environment of High pressure and Low temperature. Lower the pressure environment and the Methane Hydrate expands. Expansion moves the Methane Hydrate toward the Low Pressure Low Temperature Environment. As pressure is lowered as in a Blow Out Situation where Mud Weight is rapidly decreasing due to displacement by expanding Methane Hydrate Phasing into Liquid Methane Mud the Methane enters the Low Pressure Low Temperature Environment where Liquid Methane Mud is Stable. In a Blow Out Situation rapid velocity of Fluid causes Friction Heating and more Expansion due to Heat. As the Velocity and Heat of the Methane Mud increases the Methane enters the Low Pressure High Temperature Environment where Methane Gas is Stable. Shake a champagne bottle up and pop the cork. Now put the cork back in!
James Vignali (10 months ago)
Methane Hydrate is Stable in an environment of High pressure and Low temperature. Lower the pressure environment and the Methane Hydrate expands. Expansion moves the Methane Hydrate toward the Low Pressure Low Temperature Environment. As pressure is lowered as in a Blow Out Situation where Mud Weight is rapidly decreasing due to displacement by expanding Methane Hydrate Phasing into Liquid Methane Mud the Methane enters the Low Pressure Low Temperature Environment where Liquid Methane Mud is Stable. In a Blow Out Situation rapid velocity of Fluid causes Friction Heating and more Expansion due to Heat. As the Velocity and Heat of the Methane Mud increases the Methane enters the Low Pressure High Temperature Environment where Methane Gas is Stable.
James Vignali (10 months ago)
Methane Hydrate is Stable in an environment of High pressure and Low temperature. Lower the pressure environment and the Methane Hydrate expands. Expansion moves the Methane Hydrate toward the Low Pressure Low Temperature Environment. As pressure is lowered as in a Blow Out Situation where mud weight is rapidly decreasing due to displacement by expanding Methane Hydrate Phasing into Liquid Methane Mud the Methane enters the Low Pressure Low Temperature Environment where Liquid Methane Mud is Stable.
James Vignali (10 months ago)
Methane Hydrate is stable in an environment of High pressure and Low temperature. Lower the pressure environment and the Methane Hydrate expands. Expansion moves the Methane Hydrate toward the Low Pressure Low Temperature Environment.
James Vignali (10 months ago)
Shake a champagne bottle up and pop the cork. Now put the cork back in!
bimmjim (3 years ago)
Good instructive video, although the images are lacking.
Yanping Huang (3 years ago)
thank you for sharing.
Stop And Think (4 years ago)
what are the odds that about a 100,000 years ago a methane bomb went off too? or maybe even 15,000 years ago at the end of the last ice age? with tectonic plate movements and constantly rising mountains it is quite feasible that methane 'bombs' are a trigger for climate change and of course global warming.
listen2meokidoki (3 years ago)
+vengencefrom1979 Anything is possible.
grindupBaker (4 years ago)
At 10:38 Dr. Miriam Kastner makes a mistake that over-estimates the methyl hydrate estimates by a factor of 1,000,000. She is using the European "gigaton" (10**15) when the North American "gigaton" (10**9) is always used in these graphs and tables in my experience. 
grindupBaker (4 years ago)
From the molecular graphic at 5:08 I calculate 60 cubic metres of methane at STP for 1 cubic metre of hydrate, not the 160 cubic metres. I'm going from memory about 1 mole occupying 22.4 litres STP. Perhaps I'm missing some aspect. Check it out yourself. 
bimmjim (3 years ago)
+grindupBaker In have seen this information in about ten other sources, and they all say that the amount of carbon in Methane Clathrates is about two times that in all fossil fuels.
grindupBaker (4 years ago)
I should say that I've assumed it weighs the same as ice (in fact I've assumed it weighs the same as water for a good approximation). Surely it can't be 2.33 times as heavy as ice. 
rock Onmyboi (4 years ago)
Okay, nobody tell the oil companies about the methane hydrate. Lol
sofiah16 (5 years ago)
I can't wait for the world to end, so much iniquity going on, I don't want my kids to grow up in this sick and dirty world.
Pitch Fork Theory (1 month ago)
👍
mikeymike rankin (5 years ago)
please check out the date sadly whats being said now 2012 is really bad. Lets put it this way. Reminds me when my students and I saw the world trade center on fire and the teachers in the lunchroom saw them go down. I saw a fellow teacher in the hall and all i could do was say. This is real. Well this is real too. Much too real. Keep your ears open and use ur heads folks.
don sevilla (5 years ago)
We all need to be tracking this information. It appears much has been known for a long time. Get informed, spread the word and pray for peace and progress on this topic.
Dhaval Gupta (7 years ago)
Amaising knowlege shared..Miz Miriam Kastner...impressive..!!
antred11 (7 years ago)
@bass109 Oh go to hell.
Xonk61 (8 years ago)
and termites make more methane than anything else out there...
David Porowski (1 year ago)
Xonk61 perhaps we should be eating more termites in our burgers & less cows (as a matter of self preservation, of course)
brokendash (8 years ago)
@tranquilocito If you added up all the cow farts for the past 100 years i dont think it would ever even comes close to what a single valcano could vent off during eruption.... which they said was like 5 trillon,trillion tons...
David Porowski (1 year ago)
brokendash could just as easily be our Tropical Rain Forests, spewing some CO2 & methane, versus O2 to breathe/ a delicate balance, no doubt for human life.to exist.
Doug Graves (9 years ago)
ahh! just a few more degrees and the master plan will be complete... Yeah, if that stuff decides to gasify which a warmer ocean will surely encourage, we're through and rather quickly too. Make the gas dense enough in the atmosphere and by golly no smoking everybody~! thanks for the video and it is a worry no doubt!
David Porowski (1 year ago)
uturniaphobic breathing would become an issue, BTW, methane would suffocate ALL mammals dead.
danman1210 (9 years ago)
Excellent video, im doing my dissertation on methane hydrates so this helped alot.
Luísa Fortes da Cunha (10 years ago)
watch my videos and blog surprise

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