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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">10.30758/0555-2648-2024-70-3-391-411</article-id><article-id custom-type="elpub" pub-id-type="custom">aari-642</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>ГЛЯЦИОЛОГИЯ И КРИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GLACIOLOGY AND CRYOLOGY OF THE EARTH</subject></subj-group></article-categories><title-group><article-title>Распространение и динамика термоцирков на ключевом участке Центрального Ямала по материалам дистанционного зондирования</article-title><trans-title-group xml:lang="en"><trans-title>Spatial distribution and dynamics of thermocirques in a key area of Central Yamal based on remote sensing data</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7581-731X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Тарасевич</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tarasevich</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тюмень, Москва</p></bio><bio xml:lang="en"><p>Ilia I. Tarasevich</p><p>Tyumen, Moscow</p></bio><email xlink:type="simple">ilya.tarasevich@student.msu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4634-6413</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лейбман</surname><given-names>М. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Leibman</surname><given-names>M. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тюмень</p></bio><bio xml:lang="en"><p>Marina O. Leibman</p><p>Tyumen</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4912-1850</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кизяков</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kizyakov</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Alexander I. Kizyakov</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7055-9852</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нестерова</surname><given-names>Н. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Nesterova</surname><given-names>N. B.</given-names></name></name-alternatives><bio xml:lang="en"><p>Nina B. Nesterova</p><p>Potsdam</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8855-3483</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хомутов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Khomutov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тюмень</p></bio><bio xml:lang="en"><p>Artem V. Khomutov</p><p>Tyumen</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт криосферы Земли Тюменского научного центра СО РАН;&#13;
Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Earth Cryosphere Institute, Tyumen Scientific Centre, Siberian Branch of the Russian Academy of Sciences;&#13;
Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт криосферы Земли Тюменского научного центра СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Earth Cryosphere Institute, Tyumen Scientific Centre, Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Институт полярных и морских исследований им. Альфреда Вегенера, отделение в Потсдаме;&#13;
Университет Потсдама</institution><country>Германия</country></aff><aff xml:lang="en"><institution>Alfred Wegener Institute Helmholtz Center for Polar and Marine Research;&#13;
University of Potsdam</institution><country>Germany</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>27</day><month>09</month><year>2024</year></pub-date><volume>70</volume><issue>3</issue><fpage>391</fpage><lpage>411</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тарасевич И.И., Лейбман М.О., Кизяков А.И., Нестерова Н.Б., Хомутов А.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Тарасевич И.И., Лейбман М.О., Кизяков А.И., Нестерова Н.Б., Хомутов А.В.</copyright-holder><copyright-holder xml:lang="en">Tarasevich I.I., Leibman M.O., Kizyakov A.I., Nesterova N.B., Khomutov A.V.</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/642">https://www.aaresearch.science/jour/article/view/642</self-uri><abstract><p>В последние десятилетия активно исследуется процесс термоденудации, приводящий к формированию специфических форм рельефа — термоцирков. В разных регионах криолитозоны и на разных временных отрезках наблюдается как активизация, так и затухание термоцирков, при этом, как правило, рассматриваются климатические причины наблюдаемого. В настоящей статье предлагается анализ динамики термоцирков и особенностей рельефа на ключевом участке Центрального Ямала. Для этого на основе разновременных материалов дистанционного зондирования Земли рассмотрена пространственная приуроченность термоцирков к разным геоморфологическим уровням. Прослежена их динамика за 14 лет, с 2009 по 2023 г. Установлено, что суммарная площадь термоцирков на участке увеличилась на 296 %. Они развиты исключительно на склонах крутизной 5–12°. 90 % исследованных форм приурочено к склонам III аллювиально-морской равнины, а их суммарная площадь больше на склонах западной экспозиции, которые преобладают на этом уровне в пределах участка. Наибольшие средние значения площади и протяженности термоцирков, определенной как кратчайшее расстояние между бровкой и подошвой, отмечаются на склонах южной экспозиции.</p></abstract><trans-abstract xml:lang="en"><p>Т. In recent decades, the distribution and activation of thermodenudation, which leads to the formation of specific landforms — thermocirques (also referred to as retrogressive thaw slumps, RTS), have been intensively studied. In different regions of the cryolithozone and at different time intervals, both activation and stabilization of thermocirques are observed. As a rule, studies focus on the climatic controls of the phenomena observed, the environmental controls are discussed less often. This study presents an analysis of the dynamics of thermocirques in relation to the relief features in a specific key area of Central Yamal. To achieve this aim, the spatial distribution of thermocirques at different geomorphological levels is considered based on multi-temporal remote sensing data. Satellite images obtained in 2009, 2018, and 2023, as well as a global digital elevation model (ArcticDEM), were used. We outlined five geomorphic levels and determined their parameters: area, altitude, steepness, and the aspect of the slopes. Thermocirques were identified in the images and their parameters were measured. The dynamics of the thermocirques were analyzed by their number, area, length, width, slope aspect and angle for the periods 2009–2018 and 2018–2023, and for 14 years in total, separately for each geomorphic level. It was found that thermocirques predominate on the slopes of the III alluvial-marine plain, 5–12° steep. In 14 years, the total area of thermocirques increased by 296 %, and their number — by 61 %. A larger increase in the total area and number of thermocirques occurred during the period 2009–2018 in response to climate extremes in 2012 and 2016. Thermocirques that face west cover a higher total area, partly due to the predominance of such slopes over the area of the key site. In all the years of observation, the average areas and lengths of thermocirques are maximum on south-facing slopes. Some of the results are close to those obtained in other regions of Russia and in North America. In many of the areas studied, the increase in the total area of thermocirques exceeded the increase in their number, which means that the expansion of the existing forms prevails over the inception of the new ones. The discrepancies observed in different studies in the results of assessing the effect of relief on thermocirques are due to both the regional features and differences in satellite imagery and methods of its processing.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>криогенные процессы</kwd><kwd>многолетнемерзлые породы</kwd><kwd>термоденудация</kwd><kwd>термоцирк</kwd><kwd>полуостров Ямал</kwd></kwd-group><kwd-group xml:lang="en"><kwd>periglacial processes</kwd><kwd>permafrost</kwd><kwd>thermocirque</kwd><kwd>thermodenudation</kwd><kwd>Yamal Peninsula</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Сотрудники Института криосферы Земли ТюмНЦ СО РАН И.И. Тарасевич, М.О. Лейбман и А.В. Хомутов выполнили работу в рамках государственного задания Министерства науки и высшего образования Российской Федерации (тема № FWRZ-2021-0012). Сотрудник МГУ имени М.В. Ломоносова А.И. Кизяков поддержан государственным заданием «Эволюция криосферы при изменении климата и антропогенном воздействии» (#121051100164-0). Сотрудница Института полярных и морских исследований им. Альфреда Вегенера Н.Б. Нестерова поддержана стипендией DAAD (Грант #57588368)</funding-statement><funding-statement xml:lang="en">I.I. Tarasevich, M.O. Leibman, and A.V. Khomutov, researchers at the Earth Cryosphere Institute of the Tyumen Scientific Center of the Siberian Branch of the Russian Academy of Sciences, carried out the work within the state assignment of the Ministry of Science and Higher Education of the Russian Federation (topic No. FWRZ-2021-0012). A.I. Kizyakov, a researcher at Moscow State University, was supported by the state assignment «Evolution of the cryosphere under climate change and anthropogenic impact» (#121051100164-0). N.B. 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