Some interesting reading about methane for those, unlike myself that can fully understand, I hope you will post in laymen's terms the nature of
Methane gas under the ocean and escaping into water.
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Geopressure/geothermal wells are those which produce extremely high-pressure (7,000 psi) and high-temperature (149 °C) water which may contain
hydrocarbons. The water becomes a rapidly expanding cloud of hot steam and vapours upon release to the atmosphere from a leak or rupture. Extensive
on-shore and offshore zones of geopressured water reservoirs are found in the Texas and Louisiana Gulf Coast region. Energy in these reservoirs is
present in the form of natural gas in solution, thermal energy, and hydraulic, energy. Reservoir depths generally vary from 5000 to 20,000 feet, with
corresponding temperatures from below 200°F to above 300OF. Natural gas is presumed to exist at saturation levels in the reservoirs
link
It may be possible to explain past marine extinctions by the scrubbing effect. If an inert gas is bubbled through water, the surface of each bubble
acts as a semi permeable membrane. Gases diffuse across this membrane according to their concentration inside and outside the bubble. The result of
bubbling methane through the ocean is to deplete the oxygen dissolved in the water, leading to ocean anoxia.
The consequences of a methane-driven oceanic eruption for marine and terrestrial life are likely to be catastrophic. Figuratively speaking, the
erupting region "boils over," ejecting a large amount of methane and other gases (e.g., CO2, H2S) into the atmosphere, and flooding large areas of
land. Whereas pure methane is lighter than air, methane loaded with water droplets is much heavier, and thus spreads over the land, mixing with air in
the process (and losing water as rain).
The air-methane mixture is explosive at methane concentrations between 5% and 15%; as such mixtures form in different locations near the ground and
are ignited by lightning, explosions and conflagrations destroy most of the terrestrial life, and also produce great amounts of smoke and of carbon
dioxide. Firestorms carry smoke and dust into the upper atmosphere, where they may remain for several years; the resulting darkness and global cooling
may provide an additional kill mechanism. Conversely, carbon dioxide and the remaining methane create the greenhouse effect, which may lead to global
warming. The outcome of the competition between the cooling and the warming tendencies is difficult to predict.
en.wikipedia.org...
[edit on 31-5-2010 by odd1out]
[edit on 31-5-2010 by odd1out]
[edit on 31-5-2010 by odd1out]