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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Solnechno-Zemnaya Fizika</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Solnechno-Zemnaya Fizika</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Солнечно-земная физика</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="online">2712-9640</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">109000</article-id>
   <article-id pub-id-type="doi">10.12737/szf-114202504</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Результаты  исследований</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Results of current research</subject>
    </subj-group>
    <subj-group>
     <subject>Результаты  исследований</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Effects of the May 10–13, 2024 magnetic storm in the Asian region of Russia from ionospheric sounding with a continuous chirp signal</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Эффекты магнитной бури 10–13 мая 2024 г. в Азиатском регионе России по данным зондирования ионосферы непрерывным ЛЧМ-сигналом</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/0000-0002-1371-6855</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Пономарчук</surname>
       <given-names>Сергей Николаевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ponomarchuk</surname>
       <given-names>Sergey Nikolaevich</given-names>
      </name>
     </name-alternatives>
     <email>spon@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
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    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7691-6168</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Золотухина</surname>
       <given-names>Нина Александровна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Zolotukhina</surname>
       <given-names>Nina Aleksandrovna</given-names>
      </name>
     </name-alternatives>
     <email>zolot@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
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    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5120-1150</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Куркин</surname>
       <given-names>Владимир Иванович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Kurkin</surname>
       <given-names>Vladimir Ivanovich</given-names>
      </name>
     </name-alternatives>
     <email>kurkin@iszf.irk.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-3"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2254-6138</contrib-id>
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      <name xml:lang="ru">
       <surname>Белинская</surname>
       <given-names>Анастасия Юрьевна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Belinskaya</surname>
       <given-names>Anastasiya Yuryevna</given-names>
      </name>
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     <email>belinskayaay@ipgg.sbras.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
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     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6472-5006</contrib-id>
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      <name xml:lang="ru">
       <surname>Грозов</surname>
       <given-names>Виктор Петрович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Grozov</surname>
       <given-names>Viktor Petrovich</given-names>
      </name>
     </name-alternatives>
     <email>grozov@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
     </bio>
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    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1120-870X</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Ойнац</surname>
       <given-names>Алексей Владимирович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Oinats</surname>
       <given-names>Aleksey Vladimirovich</given-names>
      </name>
     </name-alternatives>
     <email>oinats@iszf.irk.ru</email>
     <bio xml:lang="ru">
      <p>кандидат физико-математических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of physical and mathematical sciences;</p>
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    <contrib contrib-type="author">
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      <name xml:lang="ru">
       <surname>Поддельский</surname>
       <given-names>Алексей Игоревич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Poddelsky</surname>
       <given-names>Aleksey Igorevich</given-names>
      </name>
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     <email>podd-igor@yandex.ru</email>
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    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9112-6535</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Подлесный</surname>
       <given-names>Алексей Витальевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Podlesnyi</surname>
       <given-names>Aleksey Vitalyevich</given-names>
      </name>
     </name-alternatives>
     <email>pav1986@rambler.ru</email>
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     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8732-511X</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Цедрик</surname>
       <given-names>Марк Владиславович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Cedrik</surname>
       <given-names>Mark Vladislavovich</given-names>
      </name>
     </name-alternatives>
     <email>mark7cedrick@gmail.com</email>
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     <institution xml:lang="ru">Институт солнечно-земной физики СО РАН</institution>
     <city>Иркутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Solar-Terrestrial Physics SB RAS</institution>
     <city>Irkutsk</city>
     <country>Russian Federation</country>
    </aff>
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   <aff-alternatives id="aff-2">
    <aff>
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    <aff>
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     <country>Russian Federation</country>
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    <aff>
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    <aff>
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     <country>Russian Federation</country>
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    <aff>
     <institution xml:lang="ru">Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН</institution>
     <city>Новосибирск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Trofimuk Institute of Petroleum Geology and Geophysics SB RAS</institution>
     <city>Novosibirsk</city>
     <country>Russian Federation</country>
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   </aff-alternatives>
   <aff-alternatives id="aff-5">
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     <city>Паратунка</city>
     <country>Россия</country>
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     <institution xml:lang="en">Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS</institution>
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    </aff>
    <aff>
     <institution xml:lang="en">Institute of Solar-Terrestrial Physics SB RAS</institution>
     <city>Irkutsk</city>
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   <pub-date publication-format="print" date-type="pub" iso-8601-date="2025-12-10T11:21:27+03:00">
    <day>10</day>
    <month>12</month>
    <year>2025</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2025-12-10T11:21:27+03:00">
    <day>10</day>
    <month>12</month>
    <year>2025</year>
   </pub-date>
   <volume>11</volume>
   <issue>4</issue>
   <fpage>17</fpage>
   <lpage>32</lpage>
   <history>
    <date date-type="received" iso-8601-date="2025-04-15T00:00:00+03:00">
     <day>15</day>
     <month>04</month>
     <year>2025</year>
    </date>
    <date date-type="accepted" iso-8601-date="2025-06-02T00:00:00+03:00">
     <day>02</day>
     <month>06</month>
     <year>2025</year>
    </date>
   </history>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/109000/view">https://zh-szf.ru/en/nauka/article/109000/view</self-uri>
   <abstract xml:lang="ru">
    <p>Исследованы эффекты экстремальной магнитной бури 10–13 мая 2024 г. в Азиатском регионе России на основе анализа экспериментальных данных вертикального и наклонного зондирования ионосферы непрерывным ЛЧМ-сигналом. Выявлены особенности ионосферных возмущений, вызванные магнитной бурей: длительное отрицательное ионосферное возмущение, проявившееся в значительном уменьшении критических частот слоя F2 и максимальных наблюдаемых частот радиотрасс; экранировка отражений от F-области ионосферы спорадическим слоем Es и увеличенное поглощение КВ-сигналов; регистрация Es-слоев аврорального и косого типов; продолжительный G-эффект в дневное местное время, когда критическая частота F1-слоя превышала критическую частоту F2-слоя; сумеречный эффект повышения электронной концентрации и высоты максимума слоя F2. Установлена связь вариаций ионосферных параметров и максимальных наблюдаемых частот модов распространения КВ-радиоволн с пространственным положением главного ионосферного провала и экваториальной границы зоны диффузных высыпаний электронов.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Effects of the May 10–13, 2024 extreme magnetic storm in the Asian region of Russia have been studied using experimental data from vertical and oblique sounding of the ionosphere with a continuous chirp signal. Features of ionospheric disturbances induced by the magnetic storm have been revealed: the long-lasting negative ionospheric disturbance that was manifested as a significant decrease in F2-layer critical frequencies and maximum observed frequencies of radio paths; the absence of HF signal reflections from F-region due to sporadic Es layer and increased absorption of HF signals; recording of auroral and oblique Es layers; the long-lasting G-effect during local daytime during which the F1-layer critical frequency exceeded the F2-layer critical frequency; the dusk enhancement of electron density and F2-layer peak height. We have found a correlation of variations in ionospheric parameters and the maximum observed frequencies of HF radio wave propagation modes with spatial location of the main ionospheric trough and the equatorial boundary of the diffuse electron precipitation zone.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>ионосферные возмущения</kwd>
    <kwd>распространение радиоволн</kwd>
    <kwd>магнитосфера</kwd>
    <kwd>ионосфера</kwd>
    <kwd>главный ионосферный провал</kwd>
    <kwd>диффузные высыпания электронов</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>ionospheric disturbances</kwd>
    <kwd>radio wave propagation</kwd>
    <kwd>magnetosphere</kwd>
    <kwd>ionosphere</kwd>
    <kwd>main ionospheric trough</kwd>
    <kwd>diffuse electron precipitation</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Министерства науки и высшего образования Российской Федерации (проекты FWSE-2021-0002, FWZZ-2022-0019)</funding-statement>
    <funding-statement xml:lang="en">The work was financially supported by the Ministry of Science and Higher Education of the Russian Federation (Projects FWSE-2021-0002, FWZZ-2022-0019)</funding-statement>
   </funding-group>
  </article-meta>
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