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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">resar</journal-id><journal-title-group><journal-title xml:lang="ru">Природные ресурсы Арктики и Субарктики</journal-title><trans-title-group xml:lang="en"><trans-title>Arctic and Subarctic Natural Resources</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2618-9712</issn><issn pub-type="epub">2686-9683</issn><publisher><publisher-name>Академия наук Республики Саха (Якутия)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31242/2618-9712-2022-27-3-381-392</article-id><article-id custom-type="elpub" pub-id-type="custom">resar-89</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>Науки о Земле. Инженерная геология, мерзлотоведение и грунтоведение</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Earth sciences. Engineering geology, permafrost and soil science</subject></subj-group></article-categories><title-group><article-title>Донные отложения озер г. Якутск как динамичная геокриолого-геохимическая система</article-title><trans-title-group xml:lang="en"><trans-title>Bottom sediments of the city lakes as a dynamic geocryological and geochemical system</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6086-886X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Макаров</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Makarov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>МАКАРОВ Владимир Николаевич, доктор геолого-минералогических наук, профессор, главный научный сотрудник</p><p>677007, г. Якутск, ул. Мерзлотная 36</p></bio><bio xml:lang="en"><p>MAKAROV, Vladimir Nikolaevich, Dr. Sci. (Geology and Mineralogy), Professor, Chief Researcher</p><p>36 Merzlotnaya st., Yakutsk 677007</p></bio><email xlink:type="simple">vnmakarov@mpi.ysn.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/0000-0001-5241-844X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Седельникова</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Sedelnikova</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>СЕДЕЛЬНИКОВА Алена Леонидовна, ведущий инженер</p><p>677007, г. Якутск, ул. Мерзлотная 36</p></bio><bio xml:lang="en"><p>SEDELNIKOVA, Alena Leonidovna, Leading Engineer</p><p>36 Merzlotnaya st., Yakutsk 677007</p></bio><email xlink:type="simple">chizuk82@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт мерзлотоведения им. П.И. Мельникова СО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Melnikov Permafrost Institute, Siberian Branch of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>09</day><month>09</month><year>2022</year></pub-date><volume>27</volume><issue>3</issue><fpage>381</fpage><lpage>392</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Макаров В.Н., Седельникова А.Л., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Макаров В.Н., Седельникова А.Л.</copyright-holder><copyright-holder xml:lang="en">Makarov V.N., Sedelnikova A.L.</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://resar.elpub.ru/jour/article/view/89">https://resar.elpub.ru/jour/article/view/89</self-uri><abstract><p>Рассматриваются результаты геохимического изучения донных отложений озер г. Якутск в 1998–2021 гг. На протяжении периода мониторинга химический состав донных озерных отложений остается постоянным – сульфатным смешанным по составу катионов с преобладанием кальция, но наблюдаются существенные  изменения их солености. На фоне общей тенденции понижения солености этих отложений с трендом около 0,018 %/год происходит формирование кратковременных положительных аномалий солености и продолжительные периоды опреснения. Последнее определяется снижением плотности атмосферных выпадений. При относительно постоянной величине техногенных выбросов в атмосферу города резкие изменения объемов атмосферных выпадений связаны с климатическими факторами, влияющими на динамику колебания солености донных отложений городских озер. Криогенная метаморфизация донных отложений происходит неравномерно в различных частях акватории озер: в глубокой части они мало минерализованные преимущественно сульфатно-гидрокарбонатные, в мелководной более засоленные сульфатные или гидрокарбонатносульфатные.</p></abstract><trans-abstract xml:lang="en"><p>We studied the bottom sediments of the lakes in Yakutsk in the period of 1998–2021. During the monitoring period, we observed that the chemical composition of the bottom lake sediments remained constant. The analyses showed their sulfate composition, with mixed cations, where calcium predominated, and significant changes in their salinity. Against the general background of salinity decrease in these deposits (0.018 % per year), we have noted a formation of short-term positive anomalies of salinity and long periods of desalination. The latter is determined by a decrease in the density of atmospheric fallout. Though the atmosphere in the city was under a relatively constant value of technogenic emissions, sharp changes in the volume of atmospheric precipitation were associated with the climatic factors. They affected the dynamics of salinity fluctuations in the bottom sediments of the lakes under study. Cryogenic metamorphization of the bottom sediments occurred unevenly in different parts of the lakes. In the deep parts they were poorly mineralized. Their composition was predominantly sulfate-hydrocarbonate. In the shallow parts of the lakes, they were more of saline sulfate or hydrocarbonate-sulfate composition.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>геохимия</kwd><kwd>город</kwd><kwd>озера</kwd><kwd>донные отложения</kwd><kwd>соленость</kwd><kwd>атмосферные выпадения</kwd><kwd>криогенная метаморфизация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>geochemistry</kwd><kwd>city</kwd><kwd>lakes</kwd><kwd>bottom sediments</kwd><kwd>salinity</kwd><kwd>atmospheric fallout</kwd><kwd>cryogenic metamorphization</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования выполнены при поддержке комплексной программы фундаментальных научных исследований ИМЗ СО РАН (Проект СО РАН АААА-А20-120111690008-9).</funding-statement><funding-statement xml:lang="en">This study was supported by the Complex Program of Foundation Scientific Research SB RAS (project no SB RAS АААА-А20-120111690008-9).</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">ГОСТ 57567-2017. 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