The disappearance of Islands and coastal erosion attest to global warming. The rate of coastal erosion of the ice complex on the headlands now reaches 20-30 m in summer. As a result of disappearing Islands, such as the Semenovsky, Vasilievsky. In memory of our grandfathers, they were still Islands, but now it is shallow water. Over the past 1-2 thousand years, about 40 km of the sushi was eaten by coastal erosion.
This was reported by the Arctic Explorer, Professor of Tomsk Polytechnic University (TPU), head of laboratory of Arctic research, Pacific Oceanological Institute, Feb RAS Igor Semiletov.
According to scientists, especially the large erosion rate observed in the East Siberian sea and the Laptev sea – marginal seas of the Arctic ocean. According to Semiletov, global warming does not mean that becomes warmer virtually every day.
We are talking about the increase in average global temperature. It is proved that now there is a rise in sea level, melting glaciers, including mountain. The fact that the climate curve goes from periods of warming to cooling. For example, 10 thousand years ago the temperature was about the same as it is now. For the first time in the modern geological story broke this cycle and now we have to live in the era of the cold snap, however, the temperature does not fall, but rises – explained the Professor.
TPU is the world’s leading academic center for the study of the Arctic. On the basis of the international laboratory for the study of carbon in the Arctic seas is a cooperation of 15 universities and academic institutions from Russia, Sweden, the Netherlands, UK, USA and Italy.
During his expeditions to the Arctic, scientists TPU with colleagues discovered a significant degradation of submarine permafrost: the once reliable ice tube, which prevents the release of huge reserves of gas hydrates, today sprung a leak. Through these violations of the underwater permafrost of the powerful emissions of methane from sediments reaches the atmosphere.
Scientists are trying to determine how much methane buried in large areas of the Siberian Arctic shelf, what percentage of this huge stock can get into the thick of the atmosphere, and what is the impact of this pumping of methane on the climate system in the near future. This is important for long-term planning of development of the Arctic.