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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">aari</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы Арктики и Антарктики</journal-title><trans-title-group xml:lang="en"><trans-title>Arctic and Antarctic Research</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0555-2648</issn><issn pub-type="epub">2618-6713</issn><publisher><publisher-name>Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30758/0555-2648-2022-68-3-216-233</article-id><article-id custom-type="elpub" pub-id-type="custom">aari-455</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОКЕАНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OCEANOLOGY</subject></subj-group></article-categories><title-group><article-title>Возрастной состав ледяного покрова Баренцева моря</article-title><trans-title-group xml:lang="en"><trans-title>Ice age composition in the Barents sea</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Егорова</surname><given-names>Е. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Egorova</surname><given-names>E. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>St. Petersburg</p></bio><email xlink:type="simple">egorova@aari.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Миронов</surname><given-names>Е. У.</given-names></name><name name-style="western" xml:lang="en"><surname>Mironov</surname><given-names>Y. U.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Санкт-Петербург</p></bio><bio xml:lang="en"><p>St. Petersburg</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ГНЦ РФ Арктический и антарктический научно-исследовательский институт</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State Scientific Center of the Russian Federation Arctic and Antarctic Research Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>27</day><month>09</month><year>2022</year></pub-date><volume>68</volume><issue>3</issue><fpage>216</fpage><lpage>233</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Егорова Е.С., Миронов Е.У., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Егорова Е.С., Миронов Е.У.</copyright-holder><copyright-holder xml:lang="en">Egorova E.S., Mironov Y.U.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.aaresearch.science/jour/article/view/455">https://www.aaresearch.science/jour/article/view/455</self-uri><abstract><p>В настоящей работе для периода 1997–2021 гг. была произведена оценка сезонных и межгодовых изменений возрастной структуры ледяного покрова Баренцева моря в зимний период в семи основных градациях. Представлено описание ледовых условий акватории от начала формирования ледяного покрова в октябре до его завершения в мае. Результаты получены для однородных районов Баренцева моря: западного, северо-восточного и юго-восточного. Выявлены различия в количестве льдов различного возраста, а также основные периоды их преобладания для каждого из районов моря. Получена уникальная информация, дополняющая особенности ледового режима Баренцева моря за последние 25 лет.</p></abstract><trans-abstract xml:lang="en"><p>The paper presents the key results of investigating Barents Sea ice age composition during the winter season, from the beginning of ice formation in October to its termination in May. To analyze the seasonal and interannual changes in the amount of ice of different age categories, we used ice charts for the Barents Sea for the period 1997–2021, produced by the Arctic and Antarctic Research Institute. The age composition of the ice cover in the Barents Sea is represented by seven standard ice categories (thickness ranges). The areas of ice of different age categories were calculated for a ten-day time interval (in percentage of the total ice area). The results are provided for three parts of the Barents Sea: western, northeastern and southeastern.The interannual changes in the amount of ice in relative fractions of ice of different age categories in the ice cover of the Barents Sea do not show significant trends for the period 1997–2021. Thus, with the observed reduction in the Barents Sea total ice area, the amount of ice of different age categories ranges within the limits of its own natural variability. Therefore, it is impossible to draw a definite conclusion about a decrease in ice cover thickness in the Barents Sea based only on data on the ice age composition over a 24-year period of observations analyzed in this study. On comparing the estimates obtained in this study of the age structure of the ice cover in the Barents Sea with those of the previous studies on this subject, we can argue that its average thickness at the beginning of the 21st century decreased, compared to the period 1971–1976. Taking into account the statistical insignificance of the trends in interannual variations in the amount of ice of different age gradations, one can maintain that quantitative changes in the age structure of the Barents Sea ice cover began earlier than 1997.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Баренцево море</kwd><kwd>возрастная структура льдов</kwd><kwd>зимний период</kwd><kwd>ледяной покров</kwd><kwd>межгодовые изменения</kwd><kwd>сезонные изменения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Barents Sea</kwd><kwd>ice age composition</kwd><kwd>ice cover</kwd><kwd>interannual changes</kwd><kwd>seasonal changes</kwd><kwd>winter period</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда в рамках научного проекта № 22-27-00443.</funding-statement><funding-statement xml:lang="en">The work was supported by the Russian Science Foundation within the framework of the scientific project No. 22-27-00443.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">IPCC Special Report on the Ocean and Cryosphere in a Changing Climate. 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