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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-1082</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>Вычислительные эксперименты и волны-убийцы</article-title><trans-title-group xml:lang="en"><trans-title>Numerical Experiments and Freak 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>Захаров</surname><given-names>В. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakharov</surname><given-names>V. E.</given-names></name></name-alternatives><email xlink:type="simple">zakharov@math.arizona.edu</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>Дьяченко</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Dyachenko</surname><given-names>A. I.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Новосибирский государственный университет; Институт теоретической физики им. Л.Д. Ландау РАН; Физический институт им. П.Н. Лебедева РАН; University of Arizona, Department of Mathematics, USA<country>Россия</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2012</year></pub-date><pub-date pub-type="epub"><day>28</day><month>11</month><year>2022</year></pub-date><volume>5</volume><issue>1</issue><fpage>64</fpage><lpage>76</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Захаров В.Е., Дьяченко А.И., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Захаров В.Е., Дьяченко А.И.</copyright-holder><copyright-holder xml:lang="en">Zakharov V.E., Dyachenko A.I.</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://hydrophysics.spbrc.ru/jour/article/view/1082">https://hydrophysics.spbrc.ru/jour/article/view/1082</self-uri><abstract><p>Рассмотрена задача об образовании волн-убийц на поверхности глубокой воды. Предложены две аналитические модели для двухмерной идеальной жидкости. Первая основана на точных уравнениях Эйлера, в которых сделано конформное преобразование области занимаемой жидкости на полуплоскость. Во второй, приближенной, предложено каноническое преобразование переменных в гамильтониане, в результате чего получено простое нелинейное уравнение для нормальной канонической переменной. Численно изучено образование волны-убийцы в рамках обеих моделей.</p></abstract><trans-abstract xml:lang="en"><p>In the article the problem of appearence of freak wave at the surface of deep water is considered. Two analytical model are proposed for two-dimensional ideal fluid. The first model is based on the conformal mapping in the ecact Euler equations of the domain occupied by the fluid to the low half-plane. In the second model canonical transformation is applied for approximate Hamiltonian. Simple nonlinear equation for normal canonical variable is derived as the result. Numerical experiments are performed to simulate freak waves formations for both models.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>волны-убийцы</kwd><kwd>гидродинамика жидкости со свободной поверхностью</kwd><kwd>конформное преобразование</kwd><kwd>уравнение Захарова</kwd><kwd>численное моделирование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>freak waves</kwd><kwd>free-surface hydrodynamics</kwd><kwd>conformal mapping</kwd><kwd>Zakharov's equation</kwd><kwd>numerical simulation</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>Работа выполнена при поддержке грантом Миннауки РФ № 11.G34.31.0035, а также The US Army  Corps of Engineers Grant W912-BU-08-P-0143, ONR Grant N00014-06-C-0130, NSF Grant DMS 0404577,  Grant NOPP «TSA-a two scale approximation for wind-generated ocean surface waves», грантами РФФИ 0901-00631 и 09-05-13605, грантами «Фундаментальные проблемы в нелинейной динамике» Президиума РАН и «Ведущие научные школы РФ».</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">Zakharov V.E. 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