2658-4255 26584255 12 2021

5 22 https://en.russian-arctic.info/upload/iblock/03e/хвостова.pdf Influence of dangerous natural processes and phenomena on the safety of economic activity in the Arctic zone of the Russian Federation В статье изложены современное положение и перспективы развития хозяйственной деятельности в Арктической зоне Российской Федерации, а также риски, связанные с глобальными климатическими изменениями. На основе анализа новейших исследований российских и зарубежных ученых рассмотрены происходящие и прогнозируемые опасные природные процессы и явления Арктической зоны Российской Федерации, такие как геоморфологические, биологические, гидрологические, сейсмические и другие. Климатические условия Арктики, их изменения следует рассматривать не только как источник участившихся опасных природных явлений, а как отражение негативных изменений в окружающей среде, наносящих ущерб условиям проживания населения, его здоровью, работе предприятий, транспорта, социальной инфраструктуре. Arctic zone of the Russian Federation dangerous natural processes and phenomena emergencies global warming. 0 Khvostova M.

23 32 https://en.russian-arctic.info/upload/iblock/03e/брехунцов.pdf Proposals for the legislative support for the creation of a reference observational network for monitoring permafrost soils The study of permafrost is one of the most important areas of study and monitoring in the Arctic zone, both in the Russian Federation and around the world. Changes in the condition of permafrost can lead to emergencies caused by emergencies during the operation of capital construction facilities for industrial purposes, or infrastructure facilities. To track such changes, it was proposed to create a reference observation network for monitoring permafrost soils. This network is intended for a comprehensive survey of the territory. As a result of this research, a number of proposals are presented, the focus of which is both commercial (for subsurface users) and managerial (for state structures). development of the Arctic observation network permafrost permafrost regime stations subsoil use 0 Brekhuntsov A.M. 0 Petrov Y.V. 0 Prykova O.A.

33 49 https://en.russian-arctic.info/upload/iblock/03e/Алексеева%20(1).pdf Review of methods and main results of sea ice thickness measurements in the Arctic Review of main methods of sea ice thickness measurements and results of published researches about climate and interannual variability of this parameter in the Arctic Basin and in the Arctic Seas are presented. Following methods of thickness measurements are developed and widely used: ice drilling, acoustic (echo sounder), electromagnetic method, visual and TV ship observations. Maximum area of the Arctic sea ice can be covered by acoustic measurements from submarines, visual and TV ship observations from ice class vessels and icebreakers. Results of thickness measurements in the Arctic reviewed in present research were obtained in various regions of the Arctic, in various seasons, by various methods and various periods, and, consequently, do not allow to estimate unambiguously a climate and interannual variability of sea ice thickness in the Arctic. However, authors concluded that changes of average sea ice thickness in the Arctic Basin are influenced in first turn by dynamic processes caused by changes in the atmosphere circulation. TV-complex developed in the AARI is a perspective method to automate process of sea ice thickness measurements from the shipboards. drill-hole measurements climate changes visual ice observations fast ice thickness ice thickness EM sea ice thickness measurements 0 Alekseeva T.A. 0 Frolov S.V. 0 Serovetnikov S.S.

50 61 https://en.russian-arctic.info/upload/iblock/03e/Cтепанов.pdf Geodynamic Risk Assessments for Oil and Gas Industry of the Arctic Zone The article shows that the depletion of existing oil and gas fields leads to the transfer of the main hydrocarbons production to the Arctic zone of the Globe, where their significant reserves are concentrated. It is stated that the management of geodynamic risks in the territories of oil and gas basins is associated with the use of mathematical modeling methods. Models for assessing geodynamic risks are divided into deterministic, probabilistic, and based on the use of the mathematical apparatus of fuzzy sets. To solve the problem of risk classification of the Arctic zone territories in relation to the location of oil and gas facilities, fuzzy models were used. The method of solving problems of managing geodynamic risks in the territories containing oil and gas complexes allows you to rank objects according to the degree of vulnerability in relation to the manifestation of geodynamic hazards. It is concluded that this approach makes it possible to justify high-quality management decisions in ensuring the safety of oil and gas complexes. oil and gas industry geodynamic risk territory modeling assessment fuzzy model hazard minimization. 0 R. O. Stepanov 0 T. R. Akhmetshin

62 76 https://en.russian-arctic.info/upload/iblock/03e/Тимофеева.pdf Fast ice thickness in the Laptev Sea according to the polar stations data. The series of data on the fast ice thickness and the surface air temperature of the Roshydromet ground-based polar stations in the Laptev Sea are analyzed. During the analysis the characteristics values for the last 15-year period (2005-2020) are compared to the observations till 2004, and the changes corresponding to the new climatic conditions are revealed. Over the past 15 years the average ice thicknesses at the time of maximum build-up (maximum ice thickness) have decreased by 6% on average at sea. The ice build-up process has become much slower, the overstep from one stage of ice development to another is observed 1-2 ten-days periods later. The air temperature at the considered stations was on average 3°C higher than in the previous period. The most significant changes are observed in the autumn months (October, November) and in April. Averaged over the Laptev Sea stations the sum of the frost degree-days decreased by 15%; all 15 recent winter seasons can be classified as mild. It was revealed that the decrease of the frost degree-days is in a good agreement with the decrease of the mean-seasonal ice thickness (averaged for November-May) at the stations. This indicator seems to be more informative than the maximum ice thickness for changes estimation. Averaging over all stations revealed a 10% decrease of the mean-seasonal ice thickness over the past 15 years. ice thickness fast ice polar stations ice conditions Laptev Sea sum of frost degree-days 0 A.B. Timofeeva 0 M.V. Sharatunova.