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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">litosphere</journal-id><journal-title-group><journal-title xml:lang="ru">Литосфера</journal-title><trans-title-group xml:lang="en"><trans-title>LITHOSPHERE (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1681-9004</issn><issn pub-type="epub">2500-302X</issn><publisher><publisher-name>A.N. Zavaritsky Institute of Geology and Geochemistry</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.24930/1681-9004-2021-21-5-724-733</article-id><article-id custom-type="elpub" pub-id-type="custom">litosphere-1488</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><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Articles</subject></subj-group></article-categories><title-group><article-title>Поведение аномалий объемной активности почвенного радона во время подготовки тектонических землетрясений</article-title><trans-title-group xml:lang="en"><trans-title>Occurrence of anomalies in soil radon volume activity before tectonic earthquakes</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>Козлова</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kozlova</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>620110, г. Екатеринбург, ул. Амундсена, 100</p></bio><bio xml:lang="en"><p> 100 Amundsena st., Ekaterinburg 620110 </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>Бирюлин</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Biryulin</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p> 620110, г. Екатеринбург, ул. Амундсена</p></bio><bio xml:lang="en"><p>  100 Amundsena st., Ekaterinburg 620110 </p></bio><email xlink:type="simple">serrega2009@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>Юрков</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Yurkov</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p> 620110, г. Екатеринбург, ул. Амундсена, 100</p></bio><bio xml:lang="en"><p> 100 Amundsena st., Ekaterinburg 620110 </p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт геофизики УрО РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Geophysics urals Branch of RAS</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>31</day><month>10</month><year>2021</year></pub-date><volume>21</volume><issue>5</issue><fpage>724</fpage><lpage>733</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Козлова И.А., Бирюлин С.В., Юрков А.К., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Козлова И.А., Бирюлин С.В., Юрков А.К.</copyright-holder><copyright-holder xml:lang="en">Kozlova I.A., Biryulin S.V., Yurkov A.K.</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.lithosphere.ru/jour/article/view/1488">https://www.lithosphere.ru/jour/article/view/1488</self-uri><abstract><p>Объект исследований. Среди многочисленных возможных предвестников землетрясений существуют несколько наиболее физически обоснованных, к которым можно отнести аномалии объемной активности радона. Цель работы заключалась в сопоставлении наблюдаемых аномалий почвенного радона с зафиксированными сейсмическими событиями и поиске закономерностей между ними. Районом исследования являются острова Курильской гряды. Материалы и методы. На Южно-Курильском геофизическом стационаре Института морской геологии и геофизики ДВО РАН был организован мониторинг объемной активности почвенного радона (ОАР). Измерения проводились в адвективном режиме (почвенный воздух с глубины 70 см принудительно доставлялся к детектору с помощью насоса). Для ретроспективного анализа брались зарегистрированные сейсмические события с магнитудой больше 4, произошедшие в радиусе 500 км от станции мониторинга в Южно-Курильске за 2011–2018 гг.</p><p>Статистическая обработка данных осуществлялась с применением программ Microsoft Excel, Statistica. Результаты. С помощью методики сопоставления радоновых аномалий и землетрясений установлено, что можно использовать геодинамический критерий ≥2 (отношение магнитуды землетрясения к логарифму расстояния от эпицентра события до станции мониторинга в километрах). Из рассмотренных 166 тектонических землетрясений, удовлетворяющих геодинамическому критерию ≥2, 148 событиям предшествовали аномалии ОАР. Удалось определить положение землетрясений относительно экстремума предшествующих аномальных значений радона на временном интервале. Каждое из рассмотренных землетрясений, удовлетворяющее геодинамическому критерию ≥2, которому предшествовала радоновая аномалия, произошло после экстремума аномалии либо совпало с ним по времени. Выводы. Проявление тектонических землетрясений в аномалиях объемной активности радона после прохождения экстремума можно рассматривать в качестве краткосрочного прогностического критерия и использовать для разделения событий на ближние и дальние.</p></abstract><trans-abstract xml:lang="en"><sec><title>Research subject</title><p>Research subject. Earthquakes are a global problem for the entire world population. Therefore, a search for ways to predict and prevent tectonic events is a highly relevant task. Despite the existence of controversial opinions on the possibility of predicting tectonic earthquakes, research in this direction continues. Among numerous possible precursors of earthquakes, anomalies in the volume radon activity (VRA) are the most physically justifed ones. The aim of this research was to compare the observed anomalies of soil radon with the recorded seismic events in order to fnd common patterns. The research area was the Kuril Islands. VRA monitoring was conducted at the South Kuril Geophysical Station of the Institute of Marine Geology and Geophysics of the Far Eastern Branch of the Russian Academy of Sciences.</p></sec><sec><title>Methods and materials</title><p>Methods and materials. Measurements were carried out in the advective mode: soil air from a depth of 70 cm was forcibly delivered to the detector using a pump. For a retrospective analysis, we took registered seismic events with a magnitude greater than 4 that occurred within a radius of 500 km from the monitoring station in Yuzhno-Kurilsk during 2011–2018. Statistical data were processed using Microsoft Excel, Statistica software. Results. A method for comparing radon anomalies and earthquakes was developed. Using the developed methodology, it was found that the geodynamic criterion of ≥2 (the ratio of earthquake magnitude to logarithm of distance from event epicenter to the monitoring station in km) can be used when comparing VRA anomalies with tectonic earthquakes. Out of the 166 considered tectonic earthquakes meeting the geodynamic criterion of ≥2.148, the events were preceded by VRA anomalies. The position of the earthquakes was determined relative to the extremum of previous anomalous radon values in the time interval. Eac  of the considered earthquakes meeting the geodynamic criterion ≥2, which had been preceded by a radon anomaly, occurred either after its extremum or coincided with it in time. Conclusions. The manifestation of tectonic earthquakes in VRA anomalies after passing the extremum can be considered as a short-term prognostic criterion and be used for distinguishing between “near” and “far” events.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>землетрясение</kwd><kwd>почвенный радон</kwd><kwd>объемная активность радона</kwd><kwd>радоновая аномалия</kwd><kwd>радоновый мониторинг</kwd><kwd>магнитуда</kwd><kwd>Курильские острова</kwd></kwd-group><kwd-group xml:lang="en"><kwd>earthquake</kwd><kwd>soil radon</kwd><kwd>volume radon activity</kwd><kwd>radon anomaly</kwd><kwd>radon monitoring</kwd><kwd>magnitude</kwd><kwd>Kuril islands</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">Бирюлин С.В., Козлова И.А., Юрков А.К. 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