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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">10.30758/0555-2648-2021-67-1-10-27</article-id><article-id custom-type="elpub" pub-id-type="custom">aari-336</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>Изменчивость гидрохимических характеристик поверхностных вод пролива Шокальского по результатам наблюдений на научно-исследовательском стационаре «Ледовая база Мыс Баранова» в 2018–2019 гг.</article-title><trans-title-group xml:lang="en"><trans-title>Variability of surface water hydrochemical characteristics in the Shokalsky strait based on the results of observations at the “Cape Baranov Ice Base” in 2018–2019</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>Савельева</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Savelieva</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владивосток</p></bio><bio xml:lang="en"><p>Vladivostok</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Добротина</surname><given-names>Е. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Dobrotina</surname><given-names>E. D.</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">e_dobrotina@yahoo.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузьмин</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuzmin</surname><given-names>S. B.</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-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ипатов</surname><given-names>А. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Ipatov</surname><given-names>A. Yu.</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-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гончарова</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Goncharova</surname><given-names>A. B.</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-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Недашковский</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Nedashkovsky</surname><given-names>A. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ВладивостокСанкт-Петербург</p></bio><bio xml:lang="en"><p>VladivostokSt. Petersburg</p></bio><xref ref-type="aff" rid="aff-4"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Тихоокеанский океанологический институт им. В.И. Ильичева ДВО РАН<country>Россия</country></aff><aff xml:lang="en">V.I. Il’ichev Pacific Oceanological Institute<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">ГНЦ РФ Арктический и антарктический научно-исследовательский институт<country>Россия</country></aff><aff xml:lang="en">State Scientific Center of the Russian Federation Arctic and Antarctic Research Institute<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Санкт-Петербургский государственный университет<country>Россия</country></aff><aff xml:lang="en">Saint Petersburg State University<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru">Тихоокеанский океанологический институт им. В.И. Ильичева ДВО РАН; ГНЦ РФ Арктический и антарктический научно-исследовательский институт<country>Россия</country></aff><aff xml:lang="en">V.I. Il’ichev Pacific Oceanological Institute; State Scientific Center of the Russian Federation Arctic and Antarctic Research Institute<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>23</day><month>03</month><year>2021</year></pub-date><volume>67</volume><issue>1</issue><fpage>10</fpage><lpage>27</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Савельева Н.И., Добротина Е.Д., Кузьмин С.Б., Ипатов А.Ю., Гончарова А.Б., Недашковский А.П., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Савельева Н.И., Добротина Е.Д., Кузьмин С.Б., Ипатов А.Ю., Гончарова А.Б., Недашковский А.П.</copyright-holder><copyright-holder xml:lang="en">Savelieva N.I., Dobrotina E.D., Kuzmin S.B., Ipatov A.Y., Goncharova A.B., Nedashkovsky A.P.</copyright-holder><license 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/336">https://www.aaresearch.science/jour/article/view/336</self-uri><abstract><p>В соответствии с программой систематического долгосрочного мониторинга климата Арктики на НИС «Ледовая база Мыс Баранова» в 2018–2019 гг. в проливе Шокальского выполнено наблюдение гидрохимических характеристик поверхностных вод и проведен анализ причин их временной изменчивости. Выделены 4 фазы изменчивости характеристик поверхностных вод, обусловленных влиянием речного стока, процессами вертикального перемешивания, образования и таяния льда и функционированием фитопланктона в весенне-летний период. Выполнена оценка доли речных и талых вод в составе поверхностного слоя вод пролива: доля речных вод в столбе воды составляет ~ 4 %, для талых вод этот показатель близок к нулю. В периоды сильного распреснения поверхностных вод (май — июль) доля речных вод достигает десяти и более процентов.</p></abstract><trans-abstract xml:lang="en"><p>In connection with the progressing climate change in the Arctic, it is extremely important to conduct systematic long-term monitoring in the high-latitude Arctic. An important place in the network of monitoring stations is occupied by the research Station «Cape Baranov» Ice base», located on Severnaya Zemlya (in the area of the Shokalsky Strait). The article presents the results of hydrochemical observations at the Ice base from December 02, 2018 to July 15, 2019. 35 hydrochemical stations were operated from the ice of the strait in the seawater layer of 0–110 m. A significant temporal variability of the characteristics in the upper layer (0–10 m) has been recorded. Four phases of variability of the hydrochemical parameters (HP) have been identified. In December (phase 1) the HP values indicate the presence of surface waters, the origin of which we associate with the transformed river waters (TRW) of the Ob and Yenisei, coming from the Kara Sea. From January to mid-April (phase 2) the highest salinity levels and homogeneous HP are observed due to intensive vertical mixing of waters in the autumn-winter period. At the end of April — May (phase 3) there is a slight desalination of the surface layer in the Shokalsky Strait, with HP pointing to the presence of TRW. From June to July, 15 (4th phase), there is a sharp decrease in the salinity, an increase in oxygen and pH, as well as a drop in the concentration of all the biogenic elements. Such HPs indicate both additional desalination from ice and snow melting and the beginning of phytoplankton bloom. An estimation has been carried out of the proportion of TRW and waters formed during sea ice melting. The average integral proportion of TRW in the water column is ~ 4 %, and for melt water this indicator is close to zero. The influence of ice formation on the hydrochemical characteristics of the surface layers is most noticeable in the 1st and 3rd phases. During the period of strong desalination of the surface waters (May —July), the TRW proportion can reach 10 % or more. From July, the contribution of the melting of sea ice is comparable to that of TRW.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>биогенные элементы</kwd><kwd>Карское море</kwd><kwd>кислород</kwd><kwd>поверхностные воды</kwd><kwd>пролив Шокальского</kwd><kwd>речные воды</kwd><kwd>щелочность</kwd><kwd>рН</kwd></kwd-group><kwd-group xml:lang="en"><kwd>alkalinity</kwd><kwd>dissolved oxygen</kwd><kwd>Kara Sea</kwd><kwd>nitrate</kwd><kwd>pH</kwd><kwd>river water</kwd><kwd>salinity</kwd><kwd>silicate</kwd><kwd>Shokalsky Strait</kwd><kwd>surface waters</kwd><kwd>temperature</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена в рамках плановой научной тематики ААНИИ по теме 1.5.3.3 ЦНТП Росгидромета.</funding-statement></funding-group><funding-group xml:lang="en"><funding-statement>This work was carried out as a part of the AARI planned scientific topic under the project 1.5.3.3 of the Targeted Scientific and Technical Program (TSTP) of Roshydromet.</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">Алексеев Г.В., Пнюшков А.В., Смирнов А.В., Вязилова А.Е., Глок Н.И. 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