Tue, Oct 19, 2021 page7

• Homes in Russia’s arctic sink as permafrost thaws

  • Reuters, CHURAPCHA, Russia
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  The old airport in the Siberian settlement of Churapcha has been unusable for years, its runway transformed into a swampy field of puffed-up mounds and reliefs.

  As with cities and towns across northern and northeastern Russia, Churapcha is experiencing the consequence of climate change thawing the permafrost on which everything is built.

  “There isn’t a single settlement in Russia’s arctic where you wouldn’t find a destroyed or deformed building,” said Alexey Maslakov, a scientist at Moscow State University.

  

  People visit the Kingdom of Permafrost museum inside Soviet-era tunnels on the outskirts of Yakutsk, Russia, on Sept. 6.

  Photo: Reuters

  Homes are becoming separated from sinking earth. Pipelines and storage facilities are under threat. Roads are increasingly in need of repair.

  As Russia warms 2.8 times faster than the global average, the melting of Siberia’s long-frozen tundra is releasing greenhouse gases that scientists fear could frustrate global efforts to curb climate-warming emissions.

  With permafrost covering 65 percent of Russia’s landmass, the costs are already mounting.

  

  Homes on the territory of a former airfield, damaged by the thawing of permafrost, are pictured in Churapcha, Russia, on Sept. 5.

  Photo: Reuters

  Russia could face 7 trillion rubles (US$98.36 billion) in infrastructure damage by 2050 if the rate of warming continues, said Mikhail Zheleznyak, director of Yakutsk’s Melnikov Permafrost Institute.

  The bumpy landscape around Churapcha, about 5,000km east of Moscow, resembles giant sheets of bubble wrap in places where ice wedges inside the ground have melted, causing the ground to crumble, sag or cave in altogether.

  “Roads, electric power supply lines, gas pipelines, oil pipelines — all linear structures respond primarily to the warming climate and its impact on the permafrost,” said Alexander Fyodorov, deputy director of the Permafrost Institute.

  Built in the 1960s and 1970s as Soviet Russia expanded into the arctic, many buildings in the far north and east were constructed with the assumption that the permafrost — frozen for millennia — was sturdy and would never thaw.

  Apartment blocks sit atop stilts driven meters into the ground.

  The airport in Churapcha, with a population of 10,000, was closed in the 1990s because of the melt, scientists say.

  Over the years, the once-smooth runway has become a mottled field that looks more like a dragon’s back, as the ground sinks and the ice melts. Eventually, the area could become a lake, scientists say.

  Fyodorov has been studying the site for years, and found that some areas were subsiding at an average rate of 2cm to 4cm per year, while others were sinking by up to 12cm annually.

  In eight settlements in central Yakutia, a region in northeast Russia, 72 percent of people surveyed by the North-Eastern State University said they have had problems with the subsidence of their homes’ foundations, Fyodorov said.

  Across Russia, there are more than 15 million people living on permafrost foundations. Russia is investing to better monitor the subterranean thaw.

  “We don’t know what’s actually happening to it,” Russian Minister of Natural Resources and Ecology Alexander Kozlov said in August. “We need the monitoring not only to follow what is melting and how. Scientists will use it to predict its consequences and learn how to prevent accidents.”

  The ministry plans to deploy 140 monitoring stations, each with up to 30m wells to measure the situation underground. While that might help determine how quickly the region is thawing, it would not help villagers such as Yegor Dyachkovsky whose home is already buckling at Churapcha’s former airport.

  In the five years since his family built their home, the ground has sunk below it. At first the home was raised 30cm off the ground on its stilt foundations. The gap is now a full meter.

  Dyachkovsky has brought five truckloads of soil to fill the gap between the ground and his home, and says he still needs more.

  Some of his neighbors are trying to sell their homes.

  “Everyone is trying to figure out the situation on their own,” said Sergei Atlasov, another Churapcha resident.

  Dyachkovsky’s family is actually building a garage and seems ready to take his chances.

  “How can we go against nature? We have to adapt,” Dyachkovsky said. “It’s like this everywhere. There’s no one to complain to — to the spirit up high, perhaps.”
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