Sentences with phrase «reservoir of methane hydrate»

In fact, only one source of carbon that is isotopically light and available in large enough quantities has been pinpointed so far, this is the reservoir of methane hydrate deposits (Figure 2) buried on the continental shelves of the oceans (Figure 3).

The Department of Energy said it also has the potential to eventually unlock massive reservoirs of methane hydrates that are believed to exist under the ocean floor of the Gulf of Mexico.

Although the overall rate of methane production in ocean sediments is fairly slow, over millions of years, substantial reservoirs of methane hydrate have accumulated in the world's ocean margins.

Not exact matches

Trapped in ocean sediments near continents lie ancient reservoirs of methane called methane hydrates.

A release of 500 Gton C as methane (order 10 % of the hydrate reservoir) to the atmosphere would have an equivalent radiative impact to a factor of 10 increase in atmospheric CO2...........

re 454 wili — of course, introducing additional feedbacks like vegetation albedo (boreal forests replacing tundra) and methane hydrate / clathrate, etc, could concievably make it runaway — again, limited by C reservoir and land area / latitude ranges (and some places would probably see a surface albedo increase).

Even if most of this will probably not escape in any eventuality, I think it's very important to determine as soon as possible whether we're talking about one well with a bad cement job, one well with methane hydrate melting around it, failure of containment of most wells in Bovanenkovo (which after all will all have much the same conditions at the top of the reservoir), or failure of containment of most wells in the Yamal Project.

Hydrates should be seen as a seal blocking the flux of methane from underlying reservoirs, and not the total source of gas in themselves.

Outstanding examples of the latter include, in addition to the examples of SRES and ice sheets above, authors» avoidance of any estimates of carbon cycle feedbacks involving tundra or methane hydrate reservoirs; and avoidance of estimations of the degree of implementation of adaptation capacity under particular circumstances.

The US Department of Energy (DOE) National Energy Technology Laboratory has issued a solicitation (DE-FOA-0000891) for up to $ 20 million in funding for projects that focus on the following three technical topic areas: (1) characterization of methane hydrate deposits; (2) response of methane hydrate reservoirs to induced environmental change; and... Read more →

«According to the Clathrate Gun Hypothesis (Kennett et al., submitted) episodic atmospheric CH4 emissions resulting from instability of the marine sedimentary methane hydrate (clathrate) reservoir contributed significantly to the distinctive behavior of late Quaternary climate on orbital (Milankovitch) and millennial time scales.

So, hydrates are highly concentrated deposits of methane compared to free gas reservoirs, at least for gas reservoirs located above a few km of burial.

Interest in high - latitude methane and carbon cycles is motivated by the existence of very large stores of carbon (C), in potentially labile reservoirs of soil organic carbon in permafrost (frozen) soils and in methane - containing ices called methane hydrate or clathrate, especially offshore in ocean marginal sediments.

The sedimentary methane hydrate reservoir probably contains 2 — 10 times the currently known reserves of conventional natural gas, as of 2013 [update].

A release of [500/7.5 = 66.7] Gton C as methane (order [10 % / 7.5 = 1.3 %] of the hydrate reservoir) to the atmosphere would have an equivalent radiative impact to a factor of 10 increase in atmospheric CO2......

In the 2008 U.S. government (Climate Change Science Program) assessment on abrupt climate change, the authors stress the uncertainty of the size of the methane «hydrate reservoir» but say a dramatic abrupt release appears «very unlikely».