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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">103582</article-id>
   <article-id pub-id-type="doi">10.12737/szf-113202504</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ДВАДЦАТАЯ ЕЖЕГОДНАЯ КОНФЕРЕНЦИЯ «ФИЗИКА ПЛАЗМЫ В СОЛНЕЧНОЙ СИСТЕМЕ», 10–14 ФЕВРАЛЯ 2025 Г., ИНСТИТУТ КОСМИЧЕСКИХ ИССЛЕДОВАНИЙ РАН, МОСКВА, РОССИЯ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>20TH ANNUAL CONFERENCE “PLASMA PHYSICS IN THE SOLAR SYSTEM”. FEBRUARY 10–14, 2025, SPACE RESEARCH INSTITUTE RAS, MOSCOW, RUSSIA</subject>
    </subj-group>
    <subj-group>
     <subject>ДВАДЦАТАЯ ЕЖЕГОДНАЯ КОНФЕРЕНЦИЯ «ФИЗИКА ПЛАЗМЫ В СОЛНЕЧНОЙ СИСТЕМЕ», 10–14 ФЕВРАЛЯ 2025 Г., ИНСТИТУТ КОСМИЧЕСКИХ ИССЛЕДОВАНИЙ РАН, МОСКВА, РОССИЯ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Influence of interplanetary parameters on the degree of symmetry of the ring current</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Влияние межпланетных параметров на показатель степени симметрии кольцевого тока</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Макаров</surname>
       <given-names>Георгий Афанасьевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Makarov</surname>
       <given-names>Georgy Afanasyevich</given-names>
      </name>
     </name-alternatives>
     <email>gmakarov@ikfia.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-1"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт космофизических исследований и аэрономии им. Ю.Г. Шафера СО РАН</institution>
     <city>Якутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Yu.G. Shafer Institute of Cosmophysical Research and Aeronomy SB RAS</institution>
     <city>Yakutsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2025-09-22T08:08:22+03:00">
    <day>22</day>
    <month>09</month>
    <year>2025</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2025-09-22T08:08:22+03:00">
    <day>22</day>
    <month>09</month>
    <year>2025</year>
   </pub-date>
   <volume>11</volume>
   <issue>3</issue>
   <fpage>36</fpage>
   <lpage>41</lpage>
   <history>
    <date date-type="received" iso-8601-date="2025-02-28T00:00:00+03:00">
     <day>28</day>
     <month>02</month>
     <year>2025</year>
    </date>
    <date date-type="accepted" iso-8601-date="2025-05-13T00:00:00+03:00">
     <day>13</day>
     <month>05</month>
     <year>2025</year>
    </date>
   </history>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/103582/view">https://zh-szf.ru/en/nauka/article/103582/view</self-uri>
   <abstract xml:lang="ru">
    <p>В работе исследуется влияние межпланетных факторов на степень симметрии магнитосферного кольцевого тока. Рассматриваются геомагнитные индексы SYM-H, ASY-H и межпланетные параметры за период 1981–2015 гг. Показателем степени симметрии кольцевого тока является отношение SYM-H/ASY-H. Анализ проводится по среднегодовым значениям геомагнитных и межпланетных параметров. Такой подход позволяет выделить крупномасштабные закономерности. Была рассмотрена связь показателя степени симметрии кольцевого тока и индексов SYM-H и ASY-H с величиной В межпланетного магнитного поля (ММП), северо-южной компонентой Bn ММП и скоростью V солнечного ветра. Был сделан вывод, что свойства магнитосферных кольцевых токов отражаются этими индексами более адекватно при учете смещений их значений, чем без учета смещений. Получено, что при учете смещения значений ASY-H симметричный кольцевой ток примерно в два раза превалирует над асимметричным для средних условий в солнечном ветре: V&lt;550 км/с, B&lt;10 нТл, ǀBnǀ&lt;2 нТл. При спокойном состоянии солнечного ветра (V&lt;450 км/с, B&lt;5.5 нТл, ǀBnǀ&lt;0.7 нТл) показатель степени симметрии кольцевого тока увеличивается. Установлено, что при увеличении абсолютных значений межпланетных параметров V, B, Bn индекс симметричного кольцевого тока SYM-H растет сильнее, чем индекс асимметричного кольцевого тока ASY-H.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The paper studies the influence of interplanetary factors on the degree of symmetry of the magnetospheric ring current. The geomagnetic indices SYM-H, ASY-H, and interplanetary parameters for the period 1981–2015 are considered. The indicator of the degree of symmetry of the ring current is the ratio SYM-H/ASY-H. Analysis is based on annual averages of geomagnetic and interplanetary parameters. This approach allows us to identify large-scale patterns. The relationships are examined of the degree of symmetry of the ring current and the indices SYM-H and ASY-H with the value B of the interplanetary magnetic field (IMF), the IMF north-south component Bn, and the solar wind velocity V. It is concluded that properties of magnetospheric ring currents are described by these indices more adequately when offsets in their values are taken into account than without regard for them. It is found that when offsets in ASY-H are considered the symmetric ring current prevails approximately twice over the asymmetric one for average conditions in the solar wind: V&lt;550 km/s, B&lt;10 nT, ǀBnǀ&lt;2 nT. Under quiet solar wind conditions (V&lt;450 km/s, B&lt;5.5 nT, ǀBnǀ&lt;0.7 nT), the degree of symmetry of the ring current increases. It is established that with intensification of interplanetary parameters (V, B, ǀBnǀ) the symmetric ring current index SYM-H grows more strongly than the asymmetric ring current index ASY-H.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>геомагнитные индексы SYM-H и ASY-H</kwd>
    <kwd>магнитосферный кольцевой ток</kwd>
    <kwd>межпланетные параметры</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>geomagnetic indices SYM-H and ASY-H</kwd>
    <kwd>magnetospheric ring current</kwd>
    <kwd>interplanetary parameters.</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке государственного задания (номер госрегистрации № 122011700182-1)</funding-statement>
    <funding-statement xml:lang="en">The work was financially supported by the Government assignment (State Registration Number 122011700182-1)</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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