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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Solar-Terrestrial Physics</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Solar-Terrestrial Physics</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Солнечно-земная физика / Solnechno-Zemnaya Fizika / Solar-Terrestrial Physics</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">57426</article-id>
   <article-id pub-id-type="doi">10.12737/szf-92202312</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ВОСЕМНАДЦАТАЯ ЕЖЕГОДНАЯ КОНФЕРЕНЦИЯ «ФИЗИКА ПЛАЗМЫ В СОЛНЕЧНОЙ СИСТЕМЕ», 6–10 ФЕВРАЛЯ 2023 г., ИНСТИТУТ КОСМИЧЕСКИХ ИССЛЕДОВАНИЙ РАН, МОСКВА, РОССИЯ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>18TH ANNUAL CONFERENCE “PLASMA PHYSICS IN THE SOLAR SYSTEM”. FEBRUARY 6–10, 2023, SPACE RESEARCH INSTITUTE RAS, MOSCOW, RUSSIA</subject>
    </subj-group>
    <subj-group>
     <subject>ВОСЕМНАДЦАТАЯ ЕЖЕГОДНАЯ КОНФЕРЕНЦИЯ «ФИЗИКА ПЛАЗМЫ В СОЛНЕЧНОЙ СИСТЕМЕ», 6–10 ФЕВРАЛЯ 2023 г., ИНСТИТУТ КОСМИЧЕСКИХ ИССЛЕДОВАНИЙ РАН, МОСКВА, РОССИЯ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Spectral features of ionospheric plasma waves excited by powerful HF radio waves radiated at frequencies near electron gyroharmonics and F2-layer critical frequency</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Спектральные характеристики плазменных волн ионосферы при возбуждении мощными КВ-радиоволнами на частотах излучения вблизи гирогармоник электронов и критической частоты слоя F2</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/0000-0003-1727-5310</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Борисова</surname>
       <given-names>Татьяна Дмитриевна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Borisova</surname>
       <given-names>Tatiana Dmitrievna</given-names>
      </name>
     </name-alternatives>
     <email>borisova@aari.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"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1752-3273</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Благовещенская</surname>
       <given-names>Наталья Федоровна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Blagoveshchenskaya</surname>
       <given-names>Nataly Fedorovna</given-names>
      </name>
     </name-alternatives>
     <email>nataly@aari.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-2"/>
    </contrib>
    <contrib contrib-type="author">
     <contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7299-6546</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Калишин</surname>
       <given-names>Алексей Сергеевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Kalishin</surname>
       <given-names>Alexey Sergeevich</given-names>
      </name>
     </name-alternatives>
     <email>askalishin@aari.ru</email>
     <bio xml:lang="ru">
      <p>кандидат технических наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of technical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Арктический и антарктический научно-исследовательский институт</institution>
     <city>г. Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Arctic and Antarctic Research Institute</institution>
     <city>St. Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Арктический и антарктический научно-исследовательский институт</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Arctic and Antarctic Research Institute</institution>
     <city>St. Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Арктический и антарктический научно-исследовательский институт</institution>
     <city>Санкт-Петербург</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Arctic and Antarctic Research Institute</institution>
     <city>St. Petersburg</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2023-06-29T16:11:28+03:00">
    <day>29</day>
    <month>06</month>
    <year>2023</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2023-06-29T16:11:28+03:00">
    <day>29</day>
    <month>06</month>
    <year>2023</year>
   </pub-date>
   <volume>9</volume>
   <issue>2</issue>
   <fpage>101</fpage>
   <lpage>110</lpage>
   <history>
    <date date-type="received" iso-8601-date="2023-03-02T00:00:00+03:00">
     <day>02</day>
     <month>03</month>
     <year>2023</year>
    </date>
    <date date-type="accepted" iso-8601-date="2023-05-02T00:00:00+03:00">
     <day>02</day>
     <month>05</month>
     <year>2023</year>
    </date>
   </history>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/57426/view">https://zh-szf.ru/en/nauka/article/57426/view</self-uri>
   <abstract xml:lang="ru">
    <p>Представлены результаты исследований характеристик продольных плазменных волн (ленгмюровских и ионно-акустических) высокоширотной F-области ионосферы, вызванных воздействием мощных КВ-радиоволн обыкновенной (О-мода) или необыкновенной (Х-мода) поляризации КВ нагревного стенда EISCAT/Heating (Тромсë, Норвегия). Мощные КВ-радиоволны 20 октября 2012 г. и 26 февраля 2013 г. излучались в направлении магнитного зенита при ступенчатом изменении эффективной мощности излучения (ERP). Частота излучения комплекса fн 26 февраля 2013 г. была близка критической частоте fоF2 слоя F2, (fн/foF2~1) и превышала частоту гирорезонанса электронов fн&gt;5fce. Для fн 20 октября 2012 г. выполнялись условия fн/foF2~0.85–0.95 и fн&lt;6fce. Анализ данных измерений EISCAT радара некогерентного рассеяния радиоволн (НР) на частоте 930 МГц, пространственно-совмещенного с нагревным стендом для условий излучения ERP&lt;200 МВт, показал, что возбуждение параметрических распадных неустойчивостей происходит на высотах в ионосфере, где наблюдается близость частоты накачки и плазменной ленгмюровской частоты fн≈fPL. Исследованы особенности возбуждения распадных параметрических неустойчивостей в зависимости от высоты, поляризации волны накачки и соотношений между fн и foF2, а также fн и nfce.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>We present the result of the studies into characteristics of high-latitude ionospheric F-region longitudinal plasma waves (Langmuir and ion-acoustic), caused by the impact of powerful HF radio waves of ordinary (O-mode) or extraordinary (X-mode) polarization of the EISCAT/Heating facility, Tromsø, Norway. The powerful HF radio waves on October 20, 2012 and February 26, 2013 were emitted in the direction of the magnetic zenith with a step change in the effective radiation power (ERP). The radiation frequency fH of the EISCAT/Heating facility on February 26, 2013 was close to the F2-layer critical frequency foF2 (fH/foF2~1) and exceeded the electron gyroresonance frequency fH&gt;5fce. On October 20, 2012, the conditions fH/foF2~0.85–0.95 and fH&lt;6fce were fulfilled. Analysis of EISCAT measurements of an incoherent scatter radar (ISR) at a frequency of 930 MHz, spatially aligned with the heating facility for radiation conditions ERP&lt;200 MW, has shown that parametric decay instabilities are excited at the ionospheric heights where the pump frequency is close to the plasma Langmuir frequency, fH≈fPL. We have studied peculiarities of excitation of the decay parametric instabilities as a function of height in the ionosphere and pump wave polarization, the ratios between fH and foF2, and also fH and nfce.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>высокоширотная ионосфера</kwd>
    <kwd>F-область</kwd>
    <kwd>мощная КВ-радиоволна</kwd>
    <kwd>ленгмюровская волна</kwd>
    <kwd>ионно-акустическая волна</kwd>
    <kwd>радар некогерентного рассеяния радиоволн</kwd>
    <kwd>EISCAT</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>high-latitude ionosphere</kwd>
    <kwd>F-region</kwd>
    <kwd>powerful HF radio wave</kwd>
    <kwd>Langmuir wave</kwd>
    <kwd>ion-acoustic wave</kwd>
    <kwd>incoherent scatter</kwd>
    <kwd>EISCAT</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 22-17-00020, [https://rscf.ru/ project/22-17-00020/]</funding-statement>
    <funding-statement xml:lang="en">The work was financially supported by the Russian Science Foundation (Grant No. 22-17-00020) [https://rscf.ru/project/22-17-00020/]</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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