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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Russian Journal of Earth Sciences</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Russian Journal of Earth Sciences</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Russian Journal of Earth Sciences</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="online">1681-1208</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">91408</article-id>
   <article-id pub-id-type="doi">10.2205/2025ES001025</article-id>
   <article-id pub-id-type="edn">xpilab</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>ORIGINAL ARTICLES</subject>
    </subj-group>
    <subj-group>
     <subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Analysis of Volcanic Seismicity Clustering Using Data of the 2006 Eruption of Alaska's Augustine Volcano</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Анализ группирования вулканической сейсмичности по данным извержения вулкана Августина 2006-го года</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-6901-6840</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Греков</surname>
       <given-names>Евгений Михайлович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Grekov</surname>
       <given-names>Evgenii Mikhailovich</given-names>
      </name>
     </name-alternatives>
     <email>grekov.em16@physics.msu.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3361-3773</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Шебалин</surname>
       <given-names>Петр Николаевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Shebalin</surname>
       <given-names>Peter Nikolaevich</given-names>
      </name>
     </name-alternatives>
     <email>rjes@wdcb.ru</email>
     <bio xml:lang="ru">
      <p>доктор физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Федеральное государственное бюджетное учреждение науки Институт теории прогноза землетрясений и математической геофизики Российской академии наук (ИТПЗ РАН)</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Earthquake Prediction Theory and Mathematical Geophysics</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Московский государственный университет имени М. В. Ломоносова</institution>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Lomonosov Moscow State University</institution>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2025-07-06T00:00:00+03:00">
    <day>06</day>
    <month>07</month>
    <year>2025</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2025-07-06T00:00:00+03:00">
    <day>06</day>
    <month>07</month>
    <year>2025</year>
   </pub-date>
   <volume>25</volume>
   <issue>4</issue>
   <elocation-id>ES4005</elocation-id>
   <history>
    <date date-type="received" iso-8601-date="2024-12-03T00:00:00+03:00">
     <day>03</day>
     <month>12</month>
     <year>2024</year>
    </date>
    <date date-type="accepted" iso-8601-date="2025-06-03T00:00:00+03:00">
     <day>03</day>
     <month>06</month>
     <year>2025</year>
    </date>
   </history>
   <self-uri xlink:href="https://rjes.ru/en/nauka/article/91408/view">https://rjes.ru/en/nauka/article/91408/view</self-uri>
   <abstract xml:lang="ru">
    <p>Работа посвящена анализу пространственно-временного группирования событий вулканической сейсмичности, приуроченной к вулкану Августина на Аляске. Была выявлена неоднородность сейсмического режима в финальной стадии подготовки извержения 2006-го года относительно режимов в периоды вулканического затишья и начальной стадии активизации сейсмичности. Эта финальная стадия, предположительно, ассоциируется с процессом интрузии магмы в дайку, по завершению которой началось извержение. При детальном рассмотрении сейсмичности этой фазы удалось выделить два сейсмических режима, отличающихся по основным характеристикам. Причем один из режимов по параметрам схож с тем, что наблюдался на ранней стадии подготовки – высокое значение параметра наклона графика повторяемости (𝑏-value) и низкая степень кластеризации. Второй же имеет более низкое значение 𝑏-value и представляет собой серии кластеров, которые завершаются наиболее сильным событием в серии, после чего через некоторое время начинается новая серия.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The paper is devoted to the analysis of spatiotemporal grouping of volcanic seismicity events confined to the Augustine volcano in Alaska. Heterogeneity of the seismic regime in the final preparation stage of the 2006 eruption was revealed relative to the regimes during periods of calm and the initial stage of seismic activation. This final stage is presumably associated with the process of magma intrusion into the dike, upon completion of which the eruption began. A detailed analysis of the seismicity of this phase revealed two seismic regimes that differ in their main characteristics. One of the regimes is similar in parameters to that observed at the early preparation stage – a high value of the magnitude-frequency distribution slope parameter (𝑏-value) and a low degree of clustering. The second has a lower b-value and represents a series of clusters ending with the strongest event in the series, followed by a lull.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>вулканическая сейсмичность</kwd>
    <kwd>группирование сейсмичности</kwd>
    <kwd>метод ближайшего соседа</kwd>
    <kwd>вулканические рои</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>volcanic seismicity</kwd>
    <kwd>clustering of seismicity</kwd>
    <kwd>nearest neighbor method</kwd>
    <kwd>volcanic swarms</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Авторы выражают благодарность профессору Владимиру Борисовичу Смирнову за консультацию и ценные замечания к работе. Работа выполнена в рамках государственного задания Института теории прогноза землетрясений и математической геофизики РАН.</funding-statement>
    <funding-statement xml:lang="en">The authors express their gratitude to Professor Vladimir Borisovich Smirnov for consultation and valuable comments on the work. The work was carried out within the framework of the state assignment of the Institute of Earthquake Prediction Theory and Mathematical Geophysics of the Russian Academy of Sciences.</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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 <back>
  <ref-list>
   <ref id="B1">
    <label>1.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Баранов С. В., Жукова С. А., Корчак П. А. и др. Продуктивность техногенной сейсмичности // Физика Земли. — 2020. — № 3. — С. 40—51. — DOI: 10.31857/S0002333720030011.</mixed-citation>
     <mixed-citation xml:lang="en">Baranov S. V., Zhukova S. A., Korchak P. A., et al. Productivity of Mining-Induced Seismicity // Izvestiya, Physics of the Solid Earth. — 2020. — Vol. 56, no. 3. — P. 326–336. — DOI: 10.1134/S1069351320030015</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B2">
    <label>2.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Баранов С. В., Шебалин П. Н. Закономерности постсейсмических процессов и прогноз опасности сильных афтершоков. — РАН, 2019. — 218 с. — EDN: ZJTSAT.</mixed-citation>
     <mixed-citation xml:lang="en">Baranov S. V., Shebalin P. N. Patterns of Post-Seismic Processes and Forecast of the Danger of Strong Aftershocks. — RAS, 2019. — 218 p. — EDN: ZJTSAT ; (in Russian)..</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B3">
    <label>3.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Гордеев Е. И. Сейсмичность вулканов и контроль вулканической активности // Вестник Дальневосточного отделения Российской академии наук. — 2007. — № 2. — С. 38—45. — EDN: IMQGPR.</mixed-citation>
     <mixed-citation xml:lang="en">Gordeev E. I. Seismicity of volcanoes and control of volcanic activity // Vestnik of the Far East Branch of the Russian Academy of Sciences. — 2007. — No. 2. — P. 38–45. — EDN: IMQGPR ; (in Russian).</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B4">
    <label>4.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Малютин П. А. Воздействие флюидных режимов на вариации продуктивности землетрясений по данным натурных экспериментов // 9-ая Всероссийская научно-техническая конференция с международным участием «Проблемы комплексного геофизического мониторинга сейсмоактивных регионов». — Петропавловск-Камчатский : Камчатский филиал ФИЦ ЕГС РАН, 2023.</mixed-citation>
     <mixed-citation xml:lang="en">Malyutin P. A. The Impact of Fluid Regimes on Earthquake Productivity Variations Based on Field Experiments // 9th All-Russian Scientific and Technical Conference with International Participation «Problems of Complex Geophysical Monitoring of Seismically Active Regions». — Petropavlovsk-Kamchatsky : Kamchatka Branch of the Federal Research Center of Geophysical Surveys of the Russian Academy of Sciences, 2023. — (In Russian).</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B5">
    <label>5.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Маточкина С. Д., Шебалин П. Н., Смирнов В. Б. и др. Параметры группирования событий акустической эмиссии в лабораторных экспериментах по разрушению горных пород // Физика Земли. — 2024. — № 5. — С. 85—96. — DOI: 10.31857/s0002333724050066.</mixed-citation>
     <mixed-citation xml:lang="en">Matochkina S. D., Shebalin P. N., Smirnov V. B., et al. Acoustic Emission Events Clustering Parameters in Laboratory Rock Fracture Experiments // Izvestiya, Physics of the Solid Earth. — 2024. — Vol. 60, no. 5. — P. 913–922. — DOI: 10.1134/s1069351324700836.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B6">
    <label>6.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Соболев Г. А. Модель лавинно-неустойчивого трещинообразования - ЛНТ // Физика Земли. — 2019. — № 1. — С. 166—179. — DOI: 10.31857/s0002-333720191166-179.</mixed-citation>
     <mixed-citation xml:lang="en">Sobolev G. A. Avalanche Unstable Fracturing Formation Model // Izvestiya, Physics of the Solid Earth. — 2019. — Vol. 55, no. 1. — P. 138–151. — DOI: 10.1134/S1069351319010117.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B7">
    <label>7.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Baiesi M., Paczuski M. Scale-free networks of earthquakes and aftershocks // Physical Review E. — 2004. — Vol. 69, no. 6. — DOI: 10.1103/physreve.69.066106.</mixed-citation>
     <mixed-citation xml:lang="en">Baiesi M., Paczuski M. Scale-free networks of earthquakes and aftershocks // Physical Review E. — 2004. — Vol. 69, no. 6. — DOI: 10.1103/physreve.69.066106.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B8">
    <label>8.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Bender B. Maximum likelihood estimation of b values for magnitude grouped data // Bulletin of the Seismological Society of America. — 1983. — Vol. 73, no. 3. — P. 831–851. — DOI: 10.1785/bssa0730030831.</mixed-citation>
     <mixed-citation xml:lang="en">Bender B. Maximum likelihood estimation of b values for magnitude grouped data // Bulletin of the Seismological Society of America. — 1983. — Vol. 73, no. 3. — P. 831–851. — DOI: 10.1785/bssa0730030831.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B9">
    <label>9.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Buurman H., West M. E. Seismic precursors to volcanic explosions during the 2006 eruption of Augustine Volcano: Chapter 2 // The 2006 eruption of Augustine Volcano, Alaska. — US Geological Survey, 2010. — P. 41–57. — DOI: 10.3133/pp17692.</mixed-citation>
     <mixed-citation xml:lang="en">Buurman H., West M. E. Seismic precursors to volcanic explosions during the 2006 eruption of Augustine Volcano: Chapter 2 // The 2006 eruption of Augustine Volcano, Alaska. — US Geological Survey, 2010. — P. 41–57. — DOI: 10.3133/pp17692.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B10">
    <label>10.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Cervelli P. F., Fournier T., Freymueller J., et al. Ground deformation associated with the precursory unrest and early phases of the January 2006 eruption of Augustine Volcano, Alaska // Geophysical Research Letters. — 2006. — Vol. 33, no. 18. — DOI: 10.1029/2006gl027219.</mixed-citation>
     <mixed-citation xml:lang="en">Cervelli P. F., Fournier T., Freymueller J., et al. Ground deformation associated with the precursory unrest and early phases of the January 2006 eruption of Augustine Volcano, Alaska // Geophysical Research Letters. — 2006. — Vol. 33, no. 18. — DOI: 10.1029/2006gl027219.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B11">
    <label>11.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Frohlich C., Davis S. D. Single-Link Cluster Analysis As A Method to Evaluate Spatial and Temporal Properties of Earthquake Catalogues // Geophysical Journal International. — 1990. — Vol. 100, no. 1. — P. 19–32. — DOI: 10.1111/j.1365-246X.1990.tb04564.x.</mixed-citation>
     <mixed-citation xml:lang="en">Frohlich C., Davis S. D. Single-Link Cluster Analysis As A Method to Evaluate Spatial and Temporal Properties of Earthquake Catalogues // Geophysical Journal International. — 1990. — Vol. 100, no. 1. — P. 19–32. — DOI: 10.1111/j.1365-246X.1990.tb04564.x.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B12">
    <label>12.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Grassberger P., Procaccia I. Characterization of Strange Attractors // Physical Review Letters. — 1983. — Vol. 50, no. 5. — P. 346–349. — DOI: 10.1103/physrevlett.50.346.</mixed-citation>
     <mixed-citation xml:lang="en">Grassberger P., Procaccia I. Characterization of Strange Attractors // Physical Review Letters. — 1983. — Vol. 50, no. 5. — P. 346–349. — DOI: 10.1103/physrevlett.50.346.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B13">
    <label>13.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Gutenberg B., Richter C. Frequency of earthquakes in California // Nature. — 1945. — Vol. 156. — P. 371–371. — DOI: 10.1038/156371a0.</mixed-citation>
     <mixed-citation xml:lang="en">Gutenberg B., Richter C. Frequency of earthquakes in California // Nature. — 1945. — Vol. 156. — P. 371–371. — DOI: 10.1038/156371a0.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B14">
    <label>14.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Helmstetter A., Sornette D. Foreshocks explained by cascades of triggered seismicity // Journal of Geophysical Research: Solid Earth. — 2003. — Vol. 108, B10. — DOI: 10.1029/2003jb002409.</mixed-citation>
     <mixed-citation xml:lang="en">Helmstetter A., Sornette D. Foreshocks explained by cascades of triggered seismicity // Journal of Geophysical Research: Solid Earth. — 2003. — Vol. 108, B10. — DOI: 10.1029/2003jb002409.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B15">
    <label>15.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Jacobs K., Mcnutt S. Using seismic b-values to interpret seismicity rates and physical processes during the preeruptive earthquake swarm at Augustine Volcano 2005-2006: Chapter 3 // The 2006 eruption of Augustine Volcano, Alaska. — US Geological Survey, 2010. — P. 59–83. — DOI: 10.3133/pp17693.</mixed-citation>
     <mixed-citation xml:lang="en">Jacobs K., Mcnutt S. Using seismic b-values to interpret seismicity rates and physical processes during the preeruptive earthquake swarm at Augustine Volcano 2005-2006: Chapter 3 // The 2006 eruption of Augustine Volcano, Alaska. — US Geological Survey, 2010. — P. 59–83. — DOI: 10.3133/pp17693.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B16">
    <label>16.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Koulakov I., Qaysi S. I., Izbekov P., et al. Structure of shallow magma sources beneath Augustine Volcano (Alaska) inferred from local earthquake tomography // Journal of Volcanology and Geothermal Research. — 2023. — Vol. 444. — DOI: 10.1016/j.jvolgeores.2023.107965.</mixed-citation>
     <mixed-citation xml:lang="en">Koulakov I., Qaysi S. I., Izbekov P., et al. Structure of shallow magma sources beneath Augustine Volcano (Alaska) inferred from local earthquake tomography // Journal of Volcanology and Geothermal Research. — 2023. — Vol. 444. — DOI: 10.1016/j.jvolgeores.2023.107965.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B17">
    <label>17.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Lalla D. J., Power J. A. A two-step procedure for calculating earthquake hypocenters at Augustine Volcano: Chapter 7 // The 2006 Eruption of Augustine Volcano, Alaska. — US Geological Survey, 2010. — P. 129–142. — DOI: 10.3133/PP17697.</mixed-citation>
     <mixed-citation xml:lang="en">Lalla D. J., Power J. A. A two-step procedure for calculating earthquake hypocenters at Augustine Volcano: Chapter 7 // The 2006 Eruption of Augustine Volcano, Alaska. — US Geological Survey, 2010. — P. 129–142. — DOI: 10.3133/PP17697.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B18">
    <label>18.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Mignan A., Woessner J. Estimating the magnitude of completeness for earthquake catalogs // Community Online Resource for Statistical Seismicity Analysis. — 2012. — DOI: 10.5078/CORSSA-00180805.</mixed-citation>
     <mixed-citation xml:lang="en">Mignan A., Woessner J. Estimating the magnitude of completeness for earthquake catalogs // Community Online Resource for Statistical Seismicity Analysis. — 2012. — DOI: 10.5078/CORSSA-00180805.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B19">
    <label>19.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Narteau C., Shebalin P., Holschneider M. Temporal limits of the power law aftershock decay rate // Journal of Geophysical Research: Solid Earth. — 2002. — Vol. 107, B12. — DOI: 10.1029/2002jb001868.</mixed-citation>
     <mixed-citation xml:lang="en">Narteau C., Shebalin P., Holschneider M. Temporal limits of the power law aftershock decay rate // Journal of Geophysical Research: Solid Earth. — 2002. — Vol. 107, B12. — DOI: 10.1029/2002jb001868.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B20">
    <label>20.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">OpenTopography. USGS 1/3 arc-second Digital Elevation Models. — 2021. — DOI: 10.5069/G98K778D.</mixed-citation>
     <mixed-citation xml:lang="en">OpenTopography. USGS 1/3 arc-second Digital Elevation Models. — 2021. — DOI: 10.5069/G98K778D.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B21">
    <label>21.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Power J. A., Friberg P. A., Haney M. M., et al. A unified catalog of earthquake hypocenters and magnitudes at volcanoes in Alaska-1989 to 2018: Scientific Investigations Report 2019-5037. — US Geological Survey, 2019. — DOI: 10.3133/sir20195037.</mixed-citation>
     <mixed-citation xml:lang="en">Power J. A., Friberg P. A., Haney M. M., et al. A unified catalog of earthquake hypocenters and magnitudes at volcanoes in Alaska-1989 to 2018: Scientific Investigations Report 2019-5037. — US Geological Survey, 2019. — DOI: 10.3133/sir20195037.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B22">
    <label>22.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Power J. A., Lalla D. J. Seismic observations of Augustine Volcano, 1970-2007: Chapter 1 // The 2006 eruption of Augustine Volcano, Alaska. — US Geological Survey, 2010. — P. 3–40. — DOI: 10.3133/pp17691.</mixed-citation>
     <mixed-citation xml:lang="en">Power J. A., Lalla D. J. Seismic observations of Augustine Volcano, 1970-2007: Chapter 1 // The 2006 eruption of Augustine Volcano, Alaska. — US Geological Survey, 2010. — P. 3–40. — DOI: 10.3133/pp17691.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B23">
    <label>23.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Shebalin P. N., Narteau C., Baranov S. V. Earthquake productivity law // Geophysical Journal International. — 2020. — Vol. 222, no. 2. — P. 1264–1269. — DOI: 10.1093/gji/ggaa252.</mixed-citation>
     <mixed-citation xml:lang="en">Shebalin P. N., Narteau C., Baranov S. V. Earthquake productivity law // Geophysical Journal International. — 2020. — Vol. 222, no. 2. — P. 1264–1269. — DOI: 10.1093/gji/ggaa252.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B24">
    <label>24.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Sornette D., Helmstetter A. Endogenous versus exogenous shocks in systems with memory // Physica A: Statistical Mechanics and its Applications. — 2003. — Vol. 318, no. 3/4. — P. 577–591. — DOI: 10.1016/s0378-4371(02)01371-7.</mixed-citation>
     <mixed-citation xml:lang="en">Sornette D., Helmstetter A. Endogenous versus exogenous shocks in systems with memory // Physica A: Statistical Mechanics and its Applications. — 2003. — Vol. 318, no. 3/4. — P. 577–591. — DOI: 10.1016/s0378-4371(02)01371-7.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B25">
    <label>25.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Traversa P., Grasso Jean-Robert. How is Volcano Seismicity Different from Tectonic Seismicity? // Bulletin of the Seismological Society of America. — 2010. — Vol. 100, no. 4. — P. 1755–1769. — DOI: 10.1785/0120090214.</mixed-citation>
     <mixed-citation xml:lang="en">Traversa P., Grasso Jean-Robert. How is Volcano Seismicity Different from Tectonic Seismicity? // Bulletin of the Seismological Society of America. — 2010. — Vol. 100, no. 4. — P. 1755–1769. — DOI: 10.1785/0120090214.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B26">
    <label>26.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Zaliapin I., Ben-Zion Y. Earthquake clusters in southern California I: Identification and stability // Journal of Geophysical Research: Solid Earth. — 2013. — Vol. 118, no. 6. — P. 2847–2864. — DOI: 10.1002/jgrb.50179.</mixed-citation>
     <mixed-citation xml:lang="en">Zaliapin I., Ben-Zion Y. Earthquake clusters in southern California I: Identification and stability // Journal of Geophysical Research: Solid Earth. — 2013. — Vol. 118, no. 6. — P. 2847–2864. — DOI: 10.1002/jgrb.50179.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B27">
    <label>27.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Zaliapin I., Gabrielov A., Keilis-Borok V. I., et al. Clustering Analysis of Seismicity and Aftershock Identification // Physical Review Letters. — 2008. — Vol. 101, no. 1. — DOI: 10.1103/physrevlett.101.018501.</mixed-citation>
     <mixed-citation xml:lang="en">Zaliapin I., Gabrielov A., Keilis-Borok V. I., et al. Clustering Analysis of Seismicity and Aftershock Identification // Physical Review Letters. — 2008. — Vol. 101, no. 1. — DOI: 10.1103/physrevlett.101.018501.</mixed-citation>
    </citation-alternatives>
   </ref>
   <ref id="B28">
    <label>28.</label>
    <citation-alternatives>
     <mixed-citation xml:lang="ru">Zhan Y., Roman D. C., Mével H. Le, et al. Earthquakes Indicated Stress Field Change During the 2006 Unrest of Augustine Volcano, Alaska // Geophysical Research Letters. — 2022. — Vol. 49, no. 10. — DOI: 10.1029/2022gl097958.</mixed-citation>
     <mixed-citation xml:lang="en">Zhan Y., Roman D. C., Mével H. Le, et al. Earthquakes Indicated Stress Field Change During the 2006 Unrest of Augustine Volcano, Alaska // Geophysical Research Letters. — 2022. — Vol. 49, no. 10. — DOI: 10.1029/2022gl097958.</mixed-citation>
    </citation-alternatives>
   </ref>
  </ref-list>
 </back>
</article>
