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Wed Oct 9, 2019, 08:58 PM

Russian Science Team Discovers Biggest Methane Seep On Record; CH4 Concentrations 9x Normal

Russian scientists in the Arctic Ocean said they have discovered the most powerful methane gas fountain ever recorded, highlighting the danger of this greenhouse gas accelerating climate change or causing an oil or gas spill as it erupts from thawing permafrost.

A research expedition from the Tomsk polytechnic university found the seep, as methane leaks are known, east of Bennett Island in the East Siberian Sea, where its violent bubbles seemed to make the water “boil” over an area of 50 square feet.

The concentration of methane in the air there was up to 16 parts per million, more than nine times higher than the atmospheric average. “This is the most powerful seep I have ever been able to observe,” lead scientist Igor Semiletov, who has participated in 45 Arctic expeditions, said in a statement this week. “No one has ever recorded anything similar.”


When researchers drew near to the “emerald-coloured” water of the methane fountain, they “could see how gas was rising to the surface from the black depths of the sea in thousands of bubbly strands,” according to expedition member Sergei Nikiforov. They took samples of bottom sediments, water and gas, scooping up the extraordinarily large methane bubbles in buckets rather than small plastic capsules and filling several pressurised cannisters. The next day, the expedition stumbled upon another giant seep of roughly the same size, even though discovering seeps among rough ocean waves is usually “harder than finding a needle in a haystack,” Mr Nikiforov said. […]



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Reply Russian Science Team Discovers Biggest Methane Seep On Record; CH4 Concentrations 9x Normal (Original post)
hatrack Wednesday OP
appalachiablue Wednesday #1

Response to hatrack (Original post)

Wed Oct 9, 2019, 11:48 PM

1. Another article on this enormous issue:

'This Is Truly Terrifying': Scientists Studying Underwater Permafrost Thaw Find Area of the Arctic Ocean 'Boiling With Methane Bubbles.' The lead researcher said that "this is the most powerful" methane seep he has ever seen. "No one has ever recorded anything similar." Common Dreams. Oct. 9, 2019.


Researchers capture methane leaking from the seafloor in the Arctic. (Photo: National Academy of Sciences)

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