The recent result Arctic Lakes Vanishing as Planet Warms tells us that the permafrost is melting (these lakes were held up
by the permafrost beneath them — they just disappear into the water table below).
Not exact matches
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.
Black holes shaped
by impressive charges of methane blasting up from
beneath the thawing
permafrost.
This extremely rapid warming is thought
by Russian scientists to have destabilized zones of relic hydrate trapped
beneath the
permafrost.
When hydrates are present below
permafrost, on land and
beneath shallow marine shelves, they are also thermally buffered
by the latent heat energy needed to melt the
permafrost and it could take thousands of years to destabilize the gas hydrates (Taylor et al 2005).
But that didn't stop him: he continued calling — searching for infrastructure that was deteriorating as the
permafrost thawed
beneath it and for facilities threatened
by coastal erosion and flooding — until he and his colleagues had mapped every inch of Alaska's infrastructure and put a price tag on what climate change might do to it.