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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">geophystech</journal-id><journal-title-group><journal-title xml:lang="ru">Геофизические технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Journal of Geophysical Technologies</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2619-1563</issn><publisher><publisher-name>IPGG SB RAS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18303/2619-1563-2021-4-36</article-id><article-id custom-type="elpub" pub-id-type="custom">geophystech-163</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Исследование вариаций сейсмических скоростей в районе вулкана Редаут</article-title><trans-title-group xml:lang="en"><trans-title>Research of the seismic velocity variation under the Redoubt volcano</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>Касаткина</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kasatkina</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Научный сотрудник лаборатории сейсмической томографии Института нефтегазовой геологии и геофизики СО РАН. Основные научные интересы: методы сейсмической томографии.630090, Новосибирск, просп. Акад. Коптюга, 3</p></bio><bio xml:lang="en"><p>Koptyug Ave., 3, Novosibirsk, 630090</p></bio><email xlink:type="simple">KasatkinaEV@ipgg.sbras.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>Ступина</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Stupina</surname><given-names>T. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кандидат физико-математических наук, научный сотрудник лаборатории сейсмической томографии Института нефтегазовой геологии и геофизики СО РАН. Основные научные интересы: геостатистика, обработка и анализ сейсмических данных, методы построения оценок качества моделей.630090, Новосибирск, просп. Акад. Коптюга, 3</p></bio><bio xml:lang="en"><p>Koptyug Ave., 3, Novosibirsk, 630090</p></bio><email xlink:type="simple">StupinaTA@ipgg.sbras.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>Кулаков</surname><given-names>И. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Koulakov</surname><given-names>I. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Доктор геолого-минералогических наук, член-корреспондент РАН, заместитель директора Института нефтегазовой геологии и геофизики СО РАН. Основные научные интересы: численные методы решения прямых и обратных задач геофизики, методы сейсмической томографии.630090, Новосибирск, просп. Акад. Коптюга, 3</p></bio><bio xml:lang="en"><p>Koptyug Ave., 3, Novosibirsk, 630090</p></bio><email xlink:type="simple">KoulakovIY@ipgg.sbras.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН<country>Россия</country></aff><aff xml:lang="en">Trofimuk Institute of Petroleum Geology and Geophysics SB RAS<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН; Новосибирский государственный университет<country>Россия</country></aff><aff xml:lang="en">Trofimuk Institute of Petroleum Geology and Geophysics SB RAS; Novosibirsk State University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>11</day><month>03</month><year>2022</year></pub-date><volume>0</volume><issue>4</issue><fpage>36</fpage><lpage>46</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Касаткина Е.В., Ступина Т.А., Кулаков И.Ю., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Касаткина Е.В., Ступина Т.А., Кулаков И.Ю.</copyright-holder><copyright-holder xml:lang="en">Kasatkina E.V., Stupina T.A., Koulakov I.Y.</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://www.rjgt.ru/jour/article/view/163">https://www.rjgt.ru/jour/article/view/163</self-uri><abstract><p>Вулканы являются одними из самых быстроизменяющихся и трудноизучаемых геологических объектов. Задача выявления закономерностей процессов, происходящих в периоды их активности, является одной из приоритетных в мировой сейсмологии. В качестве одной из таких закономерностей в данной работе рассматривается, основанная на технике растяжения, функция вариации сейсмической скорости за двухлетний временной период в районе вулкана Редаут. Метод исследования, применяемый авторами, основывается на пассивной шумовой интерферометрии, позволяющей использовать информацию о среде в «шумовых» записях за продолжительное время. Результаты исследования по сейсмическим данным за двухлетний период показали понижение скорости в постройке вулкана и согласуются с результатами изменения скорости, полученными по объемным волнам методом сейсмической томографии.</p></abstract><trans-abstract xml:lang="en"><p>Volcanoes are the most rapidly changing and difficult to study geological features. Identifying physical signatures of processes occurring during seismic and volcanic activity is one of the most important problem in seismology. Here we reveal temporal changes of seismic velocity in the upper crust for two years of eruption activity of the Redoubt volcano. Based on correlation of continuous records of seismic noise at pairs of stations, we obtained correlograms for selected time periods. Using the stretching method, we obtained relative velocity changes between stations. These variations appear to be consistent with the results of repeated tomography that was previously derived based on body waves from local earthquakes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Шумовая интерферометрия</kwd><kwd>сейсмическая скорость</kwd><kwd>функция кросс-корреляции</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Noise interferometry</kwd><kwd>seismic velocity</kwd><kwd>cross correlation function</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Aki K. Space and time spectra of stationary stochastic waves with special reference to microtremors // Bulletin of the Earthquake Research Institute. – 1957. – Vol. 35. – P. 415–456.</mixed-citation><mixed-citation xml:lang="en">Aki K. 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