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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">vfuzeml</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Северо-Восточного федерального университета им. М.К. Аммосова. Vestnik of North-Eastern Federal University. Серия «Науки о Земле». Earth Sciences</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik of North-Eastern Federal University Series "Earth Sciences"</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2587-8751</issn><publisher><publisher-name>Северо-Восточный федеральный университет имени М.К.Аммосова</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.25587/SVFU.2022.27.3.006</article-id><article-id custom-type="elpub" pub-id-type="custom">vfuzeml-132</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>ГИДРОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>HYDROLOGY</subject></subj-group></article-categories><title-group><article-title>Природные факторы возникновения наводнений в среднем течении р. Амга, Центральная Якутия</article-title><trans-title-group xml:lang="en"><trans-title>Natural drivers of high floods in the middle reach of the Amga River, Central Yakutia</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>Тананаев</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Tananaev</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ТАНАНАЕВ Никита Иванович – к.г.н., в.н.с.</p><p>г. Якутск</p></bio><bio xml:lang="en"><p>TANAEV Nikita Ivanovich – Candidate of Geographical Sciences, Leading Researcher</p><p>Yakutsk</p></bio><email xlink:type="simple">TananaevNI@mpi.ysn.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>Находкин</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Nakhodkin</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>НАХОДКИН Николай Александрович – к.б.н., рук.</p><p>г. Якутск</p></bio><bio xml:lang="en"><p>NAKHODKIN Nikolay Aleksandrovich – Candidate of Biological Sciences, Head</p><p>Yakutsk</p></bio><email xlink:type="simple">nakhodkin@mail.ru</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>Голованов</surname><given-names>А. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Golovanov</surname><given-names>A. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ГОЛОВАНОВ Алексей Олегович – ст. преп. Эколого-географического отделения Института естественных наук</p><p>г. Якутск</p></bio><bio xml:lang="en"><p>GOLOVANOV Aleksey Olegovich – Senior Lecturer, Department of Ecology and Geography, Institute of Natural Sciences</p><p>Yakutsk</p></bio><email xlink:type="simple">shedansan@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт мерзлотоведения им. П.И. Мельникова СО РАН; СВФУ им. М.К. Аммосова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Melnikov Permafrost Institute, Siberian Branch, Russian Academy of Sciences; M.K. Ammosov North-Eastern Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Якутское региональное отделение РОССОЮЗСПАС</institution><country>Россия</country></aff><aff xml:lang="en"><institution>ROSSOYUZSPAS, Yakutsk Regional Division</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>СВФУ им. М.К. Аммосова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M.K. Ammosov North-Eastern Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>19</day><month>10</month><year>2022</year></pub-date><volume>0</volume><issue>3</issue><fpage>61</fpage><lpage>75</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Тананаев Н.И., Находкин Н.А., Голованов А.О., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Тананаев Н.И., Находкин Н.А., Голованов А.О.</copyright-holder><copyright-holder xml:lang="en">Tananaev N.I., Nakhodkin N.A., Golovanov A.O.</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.vnzsvfu.ru/jour/article/view/132">https://www.vnzsvfu.ru/jour/article/view/132</self-uri><abstract><p>Наводнения на р. Амга наблюдаются в период весеннего половодья, в первую-вторую декаду мая. Весеннее половодье – основной гидрологический сезон в среднем и нижнем течении р. Амга, к нему приурочен годовой максимум уровня и расхода воды в створе г.п. Амга. В последнее десятилетие пик половодья сместился на 6-8 дней в сторону более ранних дат, и чаще наблюдается в первую декаду мая. Русло р. Амга в районе с. Амга изобилует участками-«концентраторами» заторов, что способствует их возникновению, однако, возникают они не каждый год. Погодные условия периода половодья могут играть определяющую роль в формировании наводнений, благоприятствуя одновременно быстрому снеготаянию в верховьях реки и формированию заторов в среднем течении. Критериальный анализ указывает на более снежные зимы, более холодную третью декаду апреля и более высокое давление во второй декаде мая в центральной Якутии в годы с наводнениями. Большинство наводнений происходит в годы с суммой зимних осадков в верхнем течении р. Амга свыше 120 мм. Толщина льда в створе г.п. Амга не относится к факторам, определяющим вероятность возникновения затора. Максимальный уровень H1 %, определенный с использованием «модели надпороговых значений», составляет 145.91 м БС (1178 см), H0.1 % = 146.88 м БС (1277 см). На эти отметки должны ориентироваться проекты мер снижения гидрологических рисков, в том числе градостроительное зонирование, а также оценки вероятностных ущербов для возможных наводнений.</p></abstract><trans-abstract xml:lang="en"><p>Major flooding in the middle Amga River occurs in late spring, early to mid-May. Spring flood is the main hydrological season in the middle and lower reaches of the Amga River, marked with the annual maximum of the level and discharge of water at the Amga hudropost. In the last decade, spring freshet peak was observed in first 10 days of May, which was 6-8 days earlier than average. The Amga River channel in its middle reaches hosts multiple fluvial forms – potential ice jam concentrators, i.e. shallows and sharp channel bends, but ice jam floods are not observed annually. The weather conditions of the high water period can play a decisive role in the formation of floods, simultaneously favoring rapid snowmelt in the upper reaches of the river and the formation of jams in the middle reaches. A criterial analysis showed higher snow accumulation in the upstream catchment section, lower air temperature in the last 10 days of April and higher air pressure in mid-May in central Yakutia in the years with high floods in the middle Amga River reaches. Most floods were observed in the years with total winter precipitation over 120 mm in the upper part of the catchment. Ice thickness appear to have no influence on the ice jam probability of occurrence. Maximum water stage with return period of 100 years, calculated using ‘peak-over-threshold’ approach, is 145.91 m, and with return period of 1000 years – 146.88 m.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наводнения</kwd><kwd>серии наводнений</kwd><kwd>концентраторы заторов</kwd><kwd>центральная Якутия</kwd><kwd>конфигурация полей метеоэлементов</kwd><kwd>река Амга</kwd><kwd>климатический реанализ</kwd><kwd>модель надпороговых значений</kwd><kwd>критериальный анализ</kwd><kwd>минимизация гидрологических рисков</kwd></kwd-group><kwd-group xml:lang="en"><kwd>floods</kwd><kwd>flood series</kwd><kwd>concentrators of congestion</kwd><kwd>configuration of fields of meteorological elements</kwd><kwd>central Yakutia</kwd><kwd>Amga River basin</kwd><kwd>climate reanalysis</kwd><kwd>peak-over-threshold model</kwd><kwd>criterial analysis</kwd><kwd>hydrological risk reduction</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Статья подготовлена в рамках программы Комплексных научных исследований Академии наук РС (Я) на 2020-2021 гг.</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">Государственный доклад “О состоянии и использовании водных ресурсов Российской Федерации в 2018 г.”. – М.: НИА-Природа, 2019. – 290 с.</mixed-citation><mixed-citation xml:lang="en">Gosudarstvennyj doklad “O sostojanii i ispol’zovanii vodnyh resursov Rossijskoj Federacii v 2018 g.”. – M.: NIA-Priroda, 2019. – 290 s.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Добровольский С.Г. 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