Arctic methane emissions permafrost thawing. Near the bottom of the first sinkhole, air contained unusually high concentrations of methane, according to tests conducted by the researchers. This hypothesis points to the destabilization of gas hydrates containing huge amounts of methane gas. According to researchers at Norway's Centre for Arctic Gas Hydrate (CAGE), through a process called geothermal heat flux, the Siberian permafrost which extends to the seabed of the Kara Sea, a section of the Arctic Ocean between the Yamal Peninsula and Novaya Zemlya, is thawing. According to a CAGE researcher, Aleksei Portnov, Methane hydrate is leaking in an area of at least
Severnaya Zemlya During the days that followed Vilkitsky's expedition charted parts of the Laptev Sea coast of what they believed to be a single island. Barely six months later in early 1914, by order of the Secretary of the Imperial Navy, the new discovery was renamed "Emperor Nicholas II Land" (, "Zemlya Imperatora Nikolaya II"), after ruling Emperor Nicholas II of Russia. In 1926 the Presidium of the Central Executive Committee of the USSR renamed the still not fully explored land "Severnaya Zemlya". In May 1928, an attempt was made by Umberto Nobile and his crew in the Airship Italia to overfly