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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">50542</article-id>
   <article-id pub-id-type="doi">10.12737/szf-83202205</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">Topside ionosphere during solar cosmic ray bursts and Forbush decreases in galactic cosmic rays</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Верхняя ионосфера в период вспышек солнечных космических лучей и форбуш-понижений галактических космических лучей</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Янчуковский</surname>
       <given-names>Валерий Леонидович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Yanchukovsky</surname>
       <given-names>Valery Leonidovich</given-names>
      </name>
     </name-alternatives>
     <email>vjanch@gs.nsc.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 contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2254-6138</contrib-id>
     <name-alternatives>
      <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>
     </name-alternatives>
     <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>
     </bio>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <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>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <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>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2022-09-30T20:55:38+03:00">
    <day>30</day>
    <month>09</month>
    <year>2022</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2022-09-30T20:55:38+03:00">
    <day>30</day>
    <month>09</month>
    <year>2022</year>
   </pub-date>
   <volume>8</volume>
   <issue>3</issue>
   <fpage>35</fpage>
   <lpage>40</lpage>
   <history>
    <date date-type="received" iso-8601-date="2022-05-18T00:00:00+03:00">
     <day>18</day>
     <month>05</month>
     <year>2022</year>
    </date>
    <date date-type="accepted" iso-8601-date="2022-08-03T00:00:00+03:00">
     <day>03</day>
     <month>08</month>
     <year>2022</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/50542/view">https://naukaru.ru/en/nauka/article/50542/view</self-uri>
   <abstract xml:lang="ru">
    <p>В работе рассматривается поведение верхней ионосферы на высотах слоя F2 во время форбуш-понижений галактических космических лучей (ФП ГКЛ) и вспышек солнечных космических лучей (СКЛ). Используются результаты длительных непрерывных наблюдений космических лучей и ионосферы в Новосибирске за период с 1968 по 2021 г. Ионосферные возмущения в слое F2 в период ФП ГКЛ, которые сопровождались магнитными бурями, наблюдаются в виде отрицательной фазы ионосферной бури. Глубина понижения электронной концентрации и, соответственно, критической частоты слоя F2 на отрицательной фазе возмущения F-слоя ионосферы растет с увеличением Dst-индекса геомагнитной бури. Рост амплитуды отрицательного ионосферного возмущения становится все более значительным в зависимости от величины форбуш-понижения. По истечении восьми суток после вспышки СКЛ  и фронта ФП ГКЛ наблюдается всплеск амплитуды суточного хода критической частоты слоя F2 ионосферы. Высказано предположение, что он вызван возмущениями в нижней атмосфере в результате значительных вариаций интенсивности потоков СКЛ и ГКЛ.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The paper considers the behavior of the upper ionosphere at heights of the F2 layer during Forbush decreases in galactic cosmic rays (GCR FDs) and solar cosmic ray (SCR) bursts. We use the results of long-term continuous observations of cosmic rays and the ionosphere in Novosibirsk for the period from 1968 to 2021. The ionospheric disturbances in the F2 layer during GCR FDs, which were accompanied by a magnetic storm, took the form of an ionospheric storm negative phase. The scale of the negative phase of the ionospheric F-layer disturbance increases with increasing Dst index of the geomagnetic storm. This increase in the amplitude of the ionospheric disturbance becomes more and more significant depending on the magnitude of Forbush decreases. A burst of the amplitude of the daily variation in the F2-layer critical frequency occurred eight days after SCR bursts and GCR FD front. We assume that this burst might have been caused by disturbances in the lower atmosphere due to significant variations in the intensity of SCR and GCR fluxes.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>солнечные космические лучи</kwd>
    <kwd>галактические космические лучи</kwd>
    <kwd>ионосфера</kwd>
    <kwd>геомагнитное возмущение</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>solar cosmic rays</kwd>
    <kwd>galactic cosmic rays</kwd>
    <kwd>ionosphere</kwd>
    <kwd>geomagnetic disturbance</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Минобрнауки РФ (проект 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 (Project FWZZ-2022-0019)</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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