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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">45034</article-id>
   <article-id pub-id-type="doi">10.12737/szf-74202101</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">Complexes of activity on the Sun in solar cycle 21</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Комплексы активности на Солнце в 21-м цикле солнечной активности</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Язев</surname>
       <given-names>Сергей Арктурович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Yazev</surname>
       <given-names>Sergey Arkturovich</given-names>
      </name>
     </name-alternatives>
     <email>syazev@gmail.com</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"/>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Ульянова</surname>
       <given-names>Мария Михайловна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ulianova</surname>
       <given-names>Maria Mihaylovna</given-names>
      </name>
     </name-alternatives>
     <email>dimka3509@yandex.ru</email>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Исаева</surname>
       <given-names>Елена Сергеевна</given-names>
      </name>
      <name xml:lang="en">
       <surname>Isaeva</surname>
       <given-names>Elena Sergeevna</given-names>
      </name>
     </name-alternatives>
     <email>ele3471@yandex.ru</email>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <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>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Иркутский государственный университет</institution>
     <city>Иркутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Irkutsk State University</institution>
     <city>Irkutsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Иркутский государственный университет</institution>
     <city>Иркутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Irkutsk State University</institution>
     <city>Irkutsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Иркутский государственный университет</institution>
     <city>Иркутск</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Irkutsk State University</institution>
     <city>Irkutsk</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <volume>7</volume>
   <issue>4</issue>
   <fpage>3</fpage>
   <lpage>9</lpage>
   <history>
    <date date-type="received" iso-8601-date="2021-07-12T00:00:00+03:00">
     <day>12</day>
     <month>07</month>
     <year>2021</year>
    </date>
    <date date-type="accepted" iso-8601-date="2021-09-16T00:00:00+03:00">
     <day>16</day>
     <month>09</month>
     <year>2021</year>
    </date>
   </history>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/45034/view">https://naukaru.ru/en/nauka/article/45034/view</self-uri>
   <abstract xml:lang="ru">
    <p>В работе приведены статистические данные о комплексах активности (КА) на Солнце, наблюдавшихся в 21-м цикле солнечной активности. По синоптическим картам пятенной активности за 1976–1986 гг. выделены области, где пятнообразование наблюдалось как минимум на протяжении трех кэррингтоновских оборотов (CR), — эти области идентифицировались как ядра КА. Составлен каталог КА. Показано, что КА развивались квазипериодично импульсами продолжительностью 15–20 оборотов. Выполнен анализ северо-южной асимметрии расположения КА. Показано, что в 21-м цикле 90 % про-тонных вспышек, влияющих на природную среду, произошли в КА. Для 21–24-го циклов отмечена тенденция к уменьшению активности КА от цикла к циклу, а также проявление правила Гневышева—Оля в свойствах КА.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The paper provides statistical data on solar activity complexes (ACs) observed in solar cycle 21. From the synoptic charts for the 1976–1986 sunspot activity, we have detected the regions where the sunspot generation was observed at least through three Carrington Rotations (CRs). These regions were identified as AC cores. We have compiled an AC catalogue. ACs are shown to evolve quasi-periodically, in pulses that are 15–20 rotations long. We have analyzed the North-South asymmetry in the AC location. In cycle 21, 90 % of the proton flares that affected the natural environment are shown to have occurred in ACs. We note a tendency for AC activity to decrease, as well as the manifestation of the Gnevyshev—Ohl rule in AC properties, in solar cycles 21–24.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>солнечная активность</kwd>
    <kwd>комплексы активности</kwd>
    <kwd>вспышки</kwd>
    <kwd>северо-южная асимметрия</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>solar activity</kwd>
    <kwd>activity complexes</kwd>
    <kwd>flares</kwd>
    <kwd>North-South asymmetry</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена на УНУ «Астрофизический комплекс МГУ-ИГУ» при финансовой поддержке Минобрнауки России (соглашение 13.УНУ.21.0007, госзадание FZZE-2020-0017, FZZE-2020-0024, а также субсидия № 075-ГЗ/Ц3569/278).</funding-statement>
    <funding-statement xml:lang="en">The work was carried out using the Unique Research Facility &quot;Astrophysical complex of MSU-ISU&quot; with financial support from the Ministry of Science and Higher Education of the Russian Federation (Agreement 13.UNU.21.0007, Government Assignment FZZE-2020-0017, FZZE-2020-0024, and Subsidy No. 075-GZ/Ts3569/278).</funding-statement>
   </funding-group>
  </article-meta>
 </front>
 <body>
  <p></p>
 </body>
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