Large Plumes of Methane Discovered Off Spitsbergen in Arctic

British and German scientists have discovered 250 plumes of methane gas rising from the thawing seabed off the Spitsbergen archipelago in the Norwegian Arctic, apparently a result of the warming of the West Spitsbergen current. The researchers measured the plumes rising from the seabed at a depth of 150 to 400 meters (500 to 1,300 feet). The methane — a potent greenhouse gas — is being released by frozen methane hydrates on the sea floor, which are thawing as a result of a 1 degree C (1.8 F) warming of the West Spitsbergen current in the last 30 years, the scientists said. Most of the methane is absorbed by the ocean before it reaches the surface, but the gas increases the acidity of the ocean, which inhibits the ability of marine creatures to grow shells. Scientists fear that as the world’s oceans warm, huge amounts of methane will be released. The Spitsbergen researchers said they were surprised by the large number of methane plumes. “Our survey was designed to work out how much methane might be released by future ocean warming,” said one scientist. “We did not expect to discover such strong evidence that this process has already started.”