Sentences with phrase «called methane hydrates»

The lakes may also be storing large volumes of the potent greenhouse gas methane, frozen in a form called methane hydrates.

Absent humans burning fossil fuels, the best bet has been the methane locked in ice — so - called methane hydrates — beneath the sea floor.

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

Methane clathrate, also called methane hydrate, hydromethane, methane ice or «fire ice» is a solid clathrate compound (more specifically, a clathrate hydrate) in which a large amount of methane is trapped within a crystal structure of water, forming a solid similar to ice.

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.

There is an enormous amount of methane (CH4) on earth frozen into a type of ice called methane hydrate.

Not exact matches

Far more is locked away in frozen deposits called methane gas hydrates.

Taken together, they also provide a potential explanation for the so - called memory effect — the fact that «aqueous solutions in contact with methane form solid methane hydrate at a much faster rate if they have already undergone a methane hydrate formation - decomposition cycle,» said Alavi, almost as if the hydrate «remembers» its previous state.

Potentially catastrophic amounts of methane lie trapped as so - called burning ices, or methane hydrates, in the permafrost beneath arctic tundra — as much as 10,000,000 teragrams still trapped compared with just 5,000 teragrams in the atmosphere today, according to Simpson.

In March, Japan became the first country to successfully extract methane from frozen undersea deposits called gas hydrates.

Proponents of the so - called «methane time bomb» theory note the crumbling of glaciers in past eras destabilized methane hydrates, creating «blowouts.»

Worldwide, particularly in deeply buried permafrost and in high - latitude ocean sediments where pressures are high and temperatures are below freezing, icy deposits called hydrates hold immense amounts of methane (SN: 6/25/05, p. 410).

In Siberian permafrost, large deposits of methane gas are trapped in ice, forming what is called a gas hydrate.

Especially worrying is the observation that up to 10 percent of this area is now being punctured by so - called taliks areas of thawed permafrost that provide avenues for the ready escape of methane and opportunities for warmth to penetrate deep into the frozen hydrate beneath.

Ice sheets are heavy and cold, providing pressure and temperatures that contain methane in form of ice - like substance called gas hydrate.

Methane release from stores of so - called gas hydrates, that can form on land or under the sea, is not new to researchers.

Sometimes the methane moves around in the earth, and collects someplace, forming what are called structural hydrate deposits.

Permafrost has already been drilled for hydrate methane, at a site called Messoyakha, and a more recent test hole called Mallik.