Sentences with phrase «provided by permafrost»

The previous two parts (one here and two here) of this series examined the evidence for seeps of geological methane through the cap provided by permafrost and looked at estimates of the magnitude of such seeps in relation to other sources of atmospheric methane.

«As methane has been permanently originating in the seabed since it was formed, these deposits are huge and emissions of this ready - to - go methane to the water column only depend on occurence of migration pathways (provided or not provided by permafrost),» she said.

Not exact matches

Norway's government said the vault is in an «ideal location for long - term seed storage» since it is «well above» sea level and surrounded by permafrost, which provides natural cooling, according to the project's website.

The best data of all, of course, are provided by actual physical evidence: carbon - dated remains of trees or signs of past civilization under receding glaciers, farm houses buried in permafrost, etc..

Especially worrying is the observation that up to 10 percent of this area is now being punctured by so - called taliks areas of thawed permafrost that provide avenues for the ready escape of methane and opportunities for warmth to penetrate deep into the frozen hydrate beneath.

A new study is shedding light on what that could mean for the future by providing the first direct physical evidence of a massive release of carbon from permafrost during a warming spike at the end of the last glacial period.