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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Доклады Академии наук</journal-id><journal-title-group><journal-title xml:lang="en">Доклады Академии наук</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Академии наук</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-5652</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">16247</article-id><article-id pub-id-type="doi">10.31857/S0869-56524883248-252</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Mathematical physics</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Математическая физика</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Taking into account the fluid saturation of bottom sediments in marine seismic survey problem</article-title><trans-title-group xml:lang="ru"><trans-title>Об учёте водонасыщенности донных осадков в задаче морской сейсмической разведки</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Golubev</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Голубев</surname><given-names>В. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>w.golubev@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shevchenko</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Шевченко</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>w.golubev@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Petrov</surname><given-names>I. B.</given-names></name><name xml:lang="ru"><surname>Петров</surname><given-names>И. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Corresponding Member of the Russian Academy of Sciences</p></bio><bio xml:lang="ru"><p>Член-корреспондент РАН</p></bio><email>w.golubev@mail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Moscow Institute of Physics and Technology</institution></aff><aff><institution xml:lang="ru">"Московский физико-технический институт (национальный исследовательский университет)"</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Scientific Research Institute for System Analysis of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">"Федеральный научный центр Научно-исследовательский институт системных исследований Российской академии наук"</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-09-26" publication-format="electronic"><day>26</day><month>09</month><year>2019</year></pub-date><volume>488</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>248</fpage><lpage>252</lpage><history><date date-type="received" iso-8601-date="2019-09-24"><day>24</day><month>09</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-09-24"><day>24</day><month>09</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Russian academy of sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Российская академия наук</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Russian academy of sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-5652/article/view/16247">https://journals.eco-vector.com/0869-5652/article/view/16247</self-uri><abstract xml:lang="en"><p>The problem of the numerical simulation of the seismic response from the marine bottom is considered. Acoustic equations are used for the description of the water dynamic behavior. Bottom sediments are described with the porous fluid-filled medium. The Dorovsky model is used. The algorithm for solving all hyperbolic equation systems with the grid-characteristic method was proposed. The distinctive feature of this approach is the ability to set explicitly necessary contact conditions between media with different rheology.</p></abstract><trans-abstract xml:lang="ru"><p>Рассматривается задача численного моделирования сейсмического отклика от морского дна. Для описания динамического поведения водного слоя используются акустические уравнения. Слой донных осадков описывается пористой флюидонасыщенной средой. Для этого используется система уравнений Доровского. Предложен алгоритм, позволяющий в рамках единого сеточно-характеристического подхода для решения гиперболических систем уравнений провести полноволновое моделирование во всём расчётном объёме. Его отличительной особенностью является постановка в явном виде необходимых контактных условий на границе между средами с различной реологией.</p></trans-abstract><kwd-group xml:lang="en"><kwd>mathematical modeling</kwd><kwd>grid-characteristic method</kwd><kwd>seismic survey process</kwd><kwd>porous media</kwd><kwd>Dorovsky model</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>математическое моделирование</kwd><kwd>сеточно-характеристический метод, сейсморазведка</kwd><kwd>пористые среды</kwd><kwd>модель Доровского</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="en">State task</institution></institution-wrap><institution-wrap><institution xml:lang="ru">Государственное задание</institution></institution-wrap></funding-source><award-id></award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation> Virieux J., Calandra H., Plessix R.E. 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