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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">gesj</journal-id><journal-title-group><journal-title xml:lang="en">GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</journal-title><trans-title-group xml:lang="ru"><trans-title>GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2071-9388</issn><issn pub-type="epub">2542-1565</issn><publisher><publisher-name>Russian Geographical Society</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24057/2071-9388-2022-083</article-id><article-id custom-type="elpub" pub-id-type="custom">gesj-2941</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="en"><subject>RESEARCH PAPER</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>Water Flow Changes In The Don River (European Russia) During 1891–2019</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Georgiadi</surname><given-names>Alexander G.</given-names></name></name-alternatives><bio xml:lang="en"><p>Staromonetny Alley, Moscow, 119017</p></bio><email xlink:type="simple">georgiadi@igras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Milyukova</surname><given-names>Irina P.</given-names></name></name-alternatives><bio xml:lang="en"><p>Staromonetny Alley, Moscow, 119017</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Borodin</surname><given-names>Oleg O.</given-names></name></name-alternatives><bio xml:lang="en"><p>Gubkin Street, Moscow, 117971</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Gusarov</surname><given-names>Artyom V.</given-names></name></name-alternatives><bio xml:lang="en"><p>Kremlyovskaya Street, Kazan, 420008</p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Institute of Geography, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-2"><institution>Water Problems Institute, Russian Academy of Sciences</institution><country>Russian Federation</country></aff><aff xml:lang="en" id="aff-3"><institution>Institute of Geology and Petroleum Technologies, Kazan Federal University</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>27</day><month>06</month><year>2023</year></pub-date><volume>16</volume><issue>2</issue><fpage>6</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Georgiadi A.G., Milyukova I.P., Borodin O.O., Gusarov A.V., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Georgiadi A.G., Milyukova I.P., Borodin O.O., Gusarov A.V.</copyright-holder><copyright-holder xml:lang="en">Georgiadi A.G., Milyukova I.P., Borodin O.O., Gusarov 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://ges.rgo.ru/jour/article/view/2941">https://ges.rgo.ru/jour/article/view/2941</self-uri><abstract><p>The Don River Long near Razdorskaya Village had long phases (lasting 33–86 years) of increased/decreased naturalized annual and seasonal water flow, and their properties for 1891–2019 were identified. Long-term changes in the annual and snow-melt flood flow occurred in the opposite phase relative to changes in the winter and summer-autumn flow. Annual hydrographs in the phase of decreased flow were characterized by an increase in water discharge during the low-water seasons of the year, but a noticeable decrease in daily flood water discharge and maximum water discharge. The share of high-water years (years with a flow exceedance probability equal to or less than 25%) in the phase of increased flow is significantly higher than the share of low-water years (years with a flow exceedance probability equal to or more than 75%). And on the contrary. At the same time the cumulative share of low- and high-water years remains relatively stable.  The total changes in the annual and seasonal flow, caused by both anthropogenic and climatic factors, throughout the entire period of modern global warming (since 1989) consisted in a decrease of the annual and snow-melt flood flow and an increase of flow values during low-water seasons.</p></abstract><kwd-group xml:lang="en"><kwd>hydrological change</kwd><kwd>long-term phase</kwd><kwd>high- and low-water year</kwd><kwd>global warming</kwd><kwd>anthropogenic factor</kwd><kwd>hydrograph transformation</kwd><kwd>cumulative deviation curve</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This research was funded by the Russian Science Foundation, project no. 20-17-00209; the methodological framework for contrasting phases analysis was developed under Governmental Order to the RAS Institute of Geography, АААА-А19-119021990093-8 (FMGE-2019-0007). 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