In severe warming scenarios, the study found that more than 75% of Earth’s near-surface permafrost will be gone by the end of the century.
Thermosiphons, the row of black poles underneath the telephone wires, line the bank of the Kuskokwim River in Bethel. They were installed to keep the permafrost below ground frozen and prevent the bank from sliding into the river.
Permafrost is the frozen layer of ground on or just under the Earth’s surface found in polar regions. Romanovsky is part of a team of international scientists who are trying to understand how quickly it’s thawing. “We’re kind of on the higher end of the predictions the real changes in temperature,” he said.This has major implications for cold-climate regions like Alaska, where permafrost covers the majority of the state and thawing is already well underway. One of the biggest impacts is to the built environment.
“I get calls regularly, it’s one of those steady themes: ‘Hey, I’ve got a sinkhole in my yard. Hey, how do I level my home?’” Benesch said. Lately even: “Do you know anybody that’s a house mover?” “With technology nowadays, we can make it work, but it’s going to be very, very expensive,” said Dr. Joey Yang is a civil engineering professor at UAA.
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