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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">45265</article-id>
   <article-id pub-id-type="doi">10.12737/szf-81202206</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">Long-term trend of the ionospheric E-layer response to solar flares</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Многолетний тренд реакции Е-слоя ионосферы на солнечные вспышки</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/0000-0002-0577-0077</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Гивишвили</surname>
       <given-names>Гиви Васильевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Givishvili</surname>
       <given-names>Givi Vasilyevich</given-names>
      </name>
     </name-alternatives>
     <email>givi@izmiran.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/0000-0003-4894-9437</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Лещенко</surname>
       <given-names>Людмила Николаевна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Leshchenko</surname>
       <given-names>Liudmila Nikolaevna</given-names>
      </name>
     </name-alternatives>
     <email>ln_lesh@mail.ru</email>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН</institution>
     <city>Москва, Троицк</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation RAS</institution>
     <city>Moscow, Troitsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Институт земного магнетизма, ионосферы и распространения радиоволн им. Н.В. Пушкова РАН</institution>
     <city>Москва, Троицк</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radiowave Propagation RAS</institution>
     <city>Moscow, Troitsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2022-03-25T18:50:14+03:00">
    <day>25</day>
    <month>03</month>
    <year>2022</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2022-03-25T18:50:14+03:00">
    <day>25</day>
    <month>03</month>
    <year>2022</year>
   </pub-date>
   <volume>8</volume>
   <issue>1</issue>
   <fpage>51</fpage>
   <lpage>57</lpage>
   <history>
    <date date-type="received" iso-8601-date="2021-06-23T00:00:00+03:00">
     <day>23</day>
     <month>06</month>
     <year>2021</year>
    </date>
    <date date-type="accepted" iso-8601-date="2021-12-08T00:00:00+03:00">
     <day>08</day>
     <month>12</month>
     <year>2021</year>
    </date>
   </history>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/45265/view">https://zh-szf.ru/en/nauka/article/45265/view</self-uri>
   <abstract xml:lang="ru">
    <p>По данным наземного вертикального зондирования (ВЗ) ионосферы на ст. Москва и на пяти японских станциях с 1969 по 2015 г. проведено исследование многолетнего отклика E-слоя на солнечные рентгеновские вспышки. Анализ проводился на основе разработанного ранее метода оценки соотношения скоростей ионизации рентгеновским qx и ультрафиолетовым qu излучением во время вспышек. Подтверждено существование долговременного (по меньшей мере, охватывающего 45-летний период наблюдений) возрастания доли рентгеновского излучения в суммарной скорости ионизации E-слоя ионосферы, характеризующейся отношением qx/q, где q=qx+qu. Показано, что отношение qx/q возрастало в течение всего анализируемого периода со скоростью, не зависящей от цикла солнечной активности. Не выявлено также зависимости скорости тренда qx/q от сезона, широты (в диапазоне 26°–56° N) и долготы (37°–128° E).</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Using data from ground-based vertical sounding of the ionosphere (VS) at the station Moscow and five Japanese stations for the period from 1969 to 2015, we have examined the long-term response of the E layer to solar X-ray flares. The analysis relies on the previously developed method for estimating the ratio between rates of ionization by X-rays qx and ultraviolet radiation qu during flares. We confirmed the existence of a long-term (at least covering the 45-year observation period) increase in the proportion of X-rays in the total ionization rate of the ionospheric E layer, characterized by the ratio qx/q, where q=qx+q. The qx/q ratio is shown to increase throughout the period of interest at a rate independent of the solar activity cycle. There is also no dependence of the qx/q trend rate on the season, latitude (26°–56° N), and longitude (37°–28° E).</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>слой Е ионосферы</kwd>
    <kwd>вертикальное зондирование</kwd>
    <kwd>солнечные вспышки</kwd>
    <kwd>многолетний тренд</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>ionospheric E layer</kwd>
    <kwd>vertical sounding</kwd>
    <kwd>solar flares</kwd>
    <kwd>long-term trend</kwd>
   </kwd-group>
  </article-meta>
 </front>
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