Scientific Vessel "Akademik Mstislav Keldysh" Will Go On An Expedition To The Arctic
Scientists Of the P. P. Shirshov Institute of Oceanology of the Russian Academy of Sciences on the research vessel "Akademik Mstislav Keldysh" will go on an expedition to the Arctic on Thursday, during which they intend to study the consequences of climate change in the region, including the degradation of permafrost and the melting of glaciers.
"The expedition of scientists From the P. P. Shirshov Institute of Oceanology, which will become a qualitatively new stage in the study of the Arctic environment and climate, will start on July 30 from Kaliningrad. Research last 27 days will be carried out from the Board of the research vessel "Akademik Mstislav Keldysh" within the economic zone of Norway and Russia," the report says.
One of the tasks of the expedition is to study the degradation of permafrost and glacier melting. Scientists will study the biogeochemical processes in the water column and bottom sediments and give a quantitative assessment of the observed processes, which will allow us to assess the effects of the changing environment and climate in the Arctic. These data, as explained in the press service, are also important for economic activity, as shown by the accident in Norilsk, where more than 21 thousand tons of oil products spilled as a result of the subsidence of the concrete platform and the destruction of the reservoir.
In addition, scientists plan to obtain new data on the distribution and structure of dispersed sedimentary matter in the Norwegian, Greenland, and Barents seas. As the head of the expedition, Alexey Klyuvitkin explained, the dispersed sedimentary matter is thin (less than 1 mm) solid particles that are dispersed in the atmosphere (aerosols), the water column (hydrosols or suspension), in the snow and ice cover (cryosols).
"This substance serves as the basis for future bottom sediments, a link in the chain of global transport, redistribution and transformation of matter, part of the process of modern sedimentation, and ultimately-the head of the geological record of the ocean. Its composition is diverse: near the coast, the main role is played by terrigenous particles (brought from the land), and further into the ocean, the share of biogenic particles (phytoplankton) increases, in areas of tectonic activity, the number of particles of endogenous (volcanic and hydrothermal) origin increases," Klyuvitkin said.
He added that in addition to solving fundamental problems, the study of dispersed sediment helps in the environmental assessment of the state of the water area, as it is a sensitive indicator of environmental pollution with trace elements, as well as a long-distance carrier of pollutants.