How to use Permafrost in a sentence
Until recently, permafrost has locked carbon and methane beneath the surface of the planet.
Because of the permafrost, Aikhal was built on steel poles for support.
In the summer, the cold temperatures kept permanent layers of ice on the ground, permafrost, which turned to mud on warmer days.
In some areas, permafrost is now emitting carbon, which could potentially accelerate the greenhouse effect and global warming.
Permafrost occupies nearly a quarter of the Northern Hemisphere, but as global temperatures rise, it's melting.Advertisement
For example glaciers shrinking, permafrost thawing, earlier flowering of trees.
So maybe warming thaws the permafrost, which in turn produces more greenhouse gases, and more warming.
Global warming and the melting of vast areas of Siberian permafrost has been in the news recently.
Permafrost, which is solid, frozen soil, constitutes about 25 percent of the land area in the Northern Hemisphere.
Sunspots and increased solar activity, permafrost, and a warming arctic tundra all play a role in raising the planet's average temperature.Advertisement
Perhaps the most fascinating result of melting permafrost has been the appearance of ancient relics from Arctic peoples.
Despite changes being wrought by global warming, experts believe the deep permafrost will be reliably cool for at least the next 100 years.
Specific investigations of Scandinavian ice masses and Canadian permafrost and periglacial processes will be undertaken.
This has enormous implications for the infrastructure in this area of continuous permafrost.
The combination of ground temperatures only slightly below zero, high ice contents and steep slopes, makes mountain permafrost particularly vulnerable to changes.Advertisement
This latest embarrassing setback follows news last month that well testing at another Siberian field would be delayed due to melting permafrost.
In the subarctic regions, changes are obvious as large areas of permafrost begin to melt and ice-free sea passages increase.
When the jet engines were not enough, they blasted holes into the frozen ground with dynamite.Due to the presence of permafrost, Mirny Mine's processing plant was built 20 miles away from the mine.