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2 Ιουν 2017 · Subglacial conditions associated with a ~2-km-thick ice sheet during the LGM acted to stabilize methane hydrate formation within the upper ~440 m of subseafloor sediments (Fig. 3A, orange line). Heavier hydrates were stable down to ~520 m (Fig. 3A, green line).
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Researchers brave enough to abseil down into the craters have found elevated levels of methane in the water pooling at the bottom, suggesting the gas may be bubbling up from below. One leading ...
In May 2017 a group of researchers led by the University of Texas at Austin Jackson School of Geosciences took to the Gulf of Mexico to retrieve samples of methane hydrate, a potential future...
7 Φεβ 2019 · In this video, Ruppel explains the fundamentals of methane hydrates, where they are concentrated, and why. The areas of greatest concern are in the Arctic continental shelf, which during the last glaciation, when sea level was lower, were vast northern permafrost grasslands.
6 Σεπ 2016 · Methane hydrate: fire, ice, energy. Found near the ocean floor and beneath Arctic permafrost, methane hydrate is a mysterious icy substance that burns when lit and holds vast amounts of potential energy.
5 Ιουν 2017 · The extreme pressure and cold converted this trapped gas into methane hydrates—a frozen mixture of gas and water. Hydrates can still be found at the edge of many continental shelves,...
Methane hydrate is formed when hydrogen-bonded water and methane gas come into contact at high pressures and low temperatures in oceans. Methane clathrates are common constituents of the shallow marine geosphere and they occur in deep sedimentary structures and form outcrops on the ocean floor.
