Re: Google Alert - Arctic methane

[John Nissen]

Hi AMEGers,

This article [1] and paper [2] contain interesting information about methane hydrate sources, deposits and quantities.

I am reminded of an estimate from Natalia Shakhova, who some of us met at an AGU meeting in San Francisco (2014?), that Arctic permafrost contained ~1500 GtC, or around twice the amount of all the carbon in the atmosphere.  Much of this is in hydrate form, and masses of methane could outgas/outburst if there is a sudden change in pressure. e.g. from tsunami or earthquake.  There are various places in the world where the seabed is covered in outgas mounds known as pingos.

This and other dangers arising from Arctic meltdown could be avoided by the prompt deployment of SAI polar cooling, as described by Doug MacMartin et al. [3].

Cheers, John

[1] https://www.thebrighterside.news/post/deepest-arctic-methane-seep-found-at-3640-meters-reveals-thriving-life/

[2] https://www.nature.com/articles/s41467-025-67165-x

[3] https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022EF003052

On Wed, Dec 24, 2025 at 10:04 AM Google Alerts <googlealer...@google.com> wrote:

	Arctic methane Daily update ⋅ December 24, 2025
	NEWS
	Deepest Arctic methane seep found at 3640 meters reveals thriving life The Brighter Side of News Scientists found the deepest gas hydrate seep in the Arctic, with towering methane flares, oil leaks, and rich deep-sea life. Flag as irrelevant
	World's deepest methane mounds found at 11,942 feet in Greenland Sea - Interesting Engineering Interesting Engineering The Ocean Census Arctic Deep – EXTREME24 expedition discovered this unknown ecosystem. The Freya Hydrate Mounds pushes the known depth limit for gas ... Flag as irrelevant
	Scientists Found the Deepest Known Arctic Vent—and It's Teeming With Life - Gizmodo Gizmodo What's more, the team spotted a staggering 10,000-foot-tall (3,300-meter) methane gas flare rising through the water column, another record-setting ... Flag as irrelevant
	Methane, Oil And Strange Life Forms: Why A Hidden Arctic Ecosystem Has Alarmed Scientists News18 Freya Hydrate Mounds discovery in the Greenland Sea reveals a deep Arctic ecosystem, methane reserves, and climate implications. Flag as irrelevant
	Scientists Say This Arctic Discovery 'Rewrites the Playbook' on Deep-Sea Life Indian Defence Review Researchers observed methane gas flares rising more than 3,300 meters through the water column, among the tallest ever recorded globally. These flares ... Flag as irrelevant
	Scientists just found the world's deepest Arctic gas seep - NewsBytes NewsBytes Scientists have discovered a new ecosystem deep in the Arctic Ocean, rich in methane gas and inhabited by unique life forms, raising both ... Flag as irrelevant
	New study links classic video game play to increased happiness - The Brighter Side of News The Brighter Side of News Green ImpactDeepest Arctic methane seep found at 3,640 meters reveals thriving lifeMac Oliveau · New memory structure helps AI models think longer ... Flag as irrelevant
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