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Bubbling methane craters and super seeps – is this the worrying new face of the undersea Arctic?

http://siberiantimes.com/other/others/news/bubbling-methane-craters-and-super-seeps-is-this-the-worrying-new-face-of-the-undersea-arctic/?fbclid=IwAR0pcqZhyKtKgbnlaZi60Bs_MiAHgJj_hk8SpIWx_R0klrlQmSypIi0cBCU

By Valeria Sukhova, Olga Gertcyk19 November 2020

Video and pictures from latest research mission show gas release in the Laptev and the East Siberian seas.

A team of 69 scientists from ten countries documented bubble clouds rising from a depth of around 300 metres (985ft) along a 150km (93 mile) undersea slope in the Laptev Sea, and confirmed high methane concentrations by hundreds of onboard chemical analysis. Picture: TPU

Scientists have shared the first results of a trip to the world’s largest deposit of subsea permafrost and shallow methane hydrates.

Fields of methane discharge continue to grow all along the East Siberian Arctic Ocean Shelf, with concentration of atmospheric methane above the fields reaching 16-32ppm (parts per million).

This is up to 15 times above the planetary average of 1.85ppm.