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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">hydrophysics</journal-id><journal-title-group><journal-title xml:lang="ru">Фундаментальная и прикладная гидрофизика</journal-title><trans-title-group xml:lang="en"><trans-title>Fundamental and Applied Hydrophysics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2073-6673</issn><issn pub-type="epub">2782-5221</issn><publisher><publisher-name>St. Petersburg Research Center of the Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">hydrophysics-865</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>ФУНДАМЕНТАЛЬНЫЕ ВОПРОСЫ ГИДРОФИЗИКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>FUNDAMENTAL ISSUES OF HYDROPHYSICS</subject></subj-group></article-categories><title-group><article-title>Перенос частиц при распространении бризеров внутренних гравитационных волн</article-title><trans-title-group xml:lang="en"><trans-title>Transport of Particles at the Propagation of Breathers of Internal Gravity Waves</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>Рувинская</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ruvinskaya</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нижний Новгород</p></bio><email xlink:type="simple">e.rouvinskaya@gmail.com</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>Куркина</surname><given-names>О. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurkina</surname><given-names>O. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нижний Новгород</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>Куркин</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kurkin</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нижний Новгород</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>Наумов</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Naumov</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нижний Новгород</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Нижегородский государственный технический университет им. Р. Е. Алексеева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Nizhny Novgorod State Technical University n.a. R. E. Alekseev</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>19</day><month>11</month><year>2022</year></pub-date><volume>8</volume><issue>3</issue><fpage>53</fpage><lpage>61</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Рувинская Е.А., Куркина О.Е., Куркин А.А., Наумов А.А., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Рувинская Е.А., Куркина О.Е., Куркин А.А., Наумов А.А.</copyright-holder><copyright-holder xml:lang="en">Ruvinskaya E.A., Kurkina O.E., Kurkin A.A., Naumov A.A.</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://hydrophysics.spbrc.ru/jour/article/view/865">https://hydrophysics.spbrc.ru/jour/article/view/865</self-uri><abstract><p>Для жидкости с квазитрехслойной стратификацией плотности исследованы особенности переноса жидких частиц при распространении длинных нелинейных локализованных волновых пакетов (бризеров) в рамках слабонелинейной теории. Для описания смещений в максимуме вертикальной бароклинной моды использовалось уравнение Гарднера. Для определения полей смещений, вертикальных и горизонтальных скоростей, необходимых для нахождения Лагранжевых траекторий частиц, использовалось три варианта вертикальной структуры волновых полей: линейная мода, слабонелинейное приближение (с учетом первой нелинейной поправки к линейной моде) и слабонелинейное слабодисперсионное приближение (учитывались как первая нелинейная, так и первая дисперсионная поправки). Поскольку поля скоростей, индуцированные нелинейным волновым пакетом, мгновенно изменяются, исследовались процессы переноса частиц для разных начальных конфигураций бризеров. Проведено сравнение формы траекторий частиц для разных горизонтов и разных конфигураций бризеров. Показано, что использование слабонелинейной модели достаточно для определения траекторий жидких частиц, поскольку учет первой дисперсионной поправки к модовой функции почти не влияет на качественные и количественные характеристики смещения частиц. Выявлено существенное отличие решения задачи о траекториях жидких частиц для двух типов нелинейных волновых движений в стратифицированной жидкости — солитонов и бризеров. </p></abstract><trans-abstract xml:lang="en"><p>The distinctive features of particle transport during the propagation of long nonlinear localized wave packets (breathers) in quasi three-layer fluid are investigated in the framework of weakly nonlinear theory. To describe the displacement at the maximum of vertical baroclinic mode the Gardner equation is used. To determine the fields of displacements, vertical and horizontal velocities, which are used for finding of Lagrangian particle trajectories, three variants of the wave fields’ vertical structure are used: linear mode, weakly nonlinear approximation (with taking into account the first nonlinear amendment to linear mode) and weakly nonlinear weakly dispersive approximation (with taking into account both the first nonlinear amendment and the first dispersive amendment to linear mode). Since the velocity fields induced by nonlinear wave packets change immediately, the processes of particle transport are investigated for different initial configurations of breathers. The comparison of the form of particle trajectories for different horizons and different breathers’ configurations is made. It is shown that the use of the weakly nonlinear model is sufficient to determine the trajectories of fluid particles. Taking into account the first dispersive amendment to the modal function almost does not affect the quality and quantity of particles’ displacements. A significant difference between solutions of the problem of fluid particles’ trajectories for two types of nonlinear wave motions in a stratified fluid — solitons and breathers — is revealed. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>внутренние волны</kwd><kwd>перенос частиц</kwd><kwd>бризеры</kwd><kwd>численное моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>internal wave</kwd><kwd>particle transport</kwd><kwd>breathers</kwd><kwd>numerical simulation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Представленные результаты получены в рамках выполнения государственного задания в сфере научной деятельности (Задание № 2015/133 («организация проведения научных исследований») и Задание № 5.30.2014/K), а также при поддержке гранта РФФИ 15-35-20563</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">Краусс В. 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