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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">49818</article-id>
   <article-id pub-id-type="doi">10.12737/szf-82202210</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">Alfvén waves: To the 80th anniversary of discovery</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Волны Альвена: к 80-летию открытия</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Гульельми</surname>
       <given-names>Анатолий Владимирович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Guglielmi</surname>
       <given-names>Anatol Vladimirovich</given-names>
      </name>
     </name-alternatives>
     <email>guglielmi@mail.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">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Клайн</surname>
       <given-names>Борис Ицикович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Klain</surname>
       <given-names>Boris Icikovich</given-names>
      </name>
     </name-alternatives>
     <email>klain@borok.yar.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/0000-0002-4864-0993</contrib-id>
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Потапов</surname>
       <given-names>Александр Сергеевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Potapov</surname>
       <given-names>Alexander Sergeevich</given-names>
      </name>
     </name-alternatives>
     <email>potapov@iszf.irk.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-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт физики Земли им. О.Ю. Шмидта РАН</institution>
     <city>Москва</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Schmidt Institute of Physics of the Earth, RAS</institution>
     <city>Moscow</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Геофизическая обсерватория «Борок» ИФЗ РАН</institution>
     <city>Борок</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Borok Geophysical Observatory of IPE RAS</institution>
     <city>Borok</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <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>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2022-06-30T11:49:23+03:00">
    <day>30</day>
    <month>06</month>
    <year>2022</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2022-06-30T11:49:23+03:00">
    <day>30</day>
    <month>06</month>
    <year>2022</year>
   </pub-date>
   <volume>8</volume>
   <issue>2</issue>
   <fpage>75</fpage>
   <lpage>77</lpage>
   <history>
    <date date-type="received" iso-8601-date="2022-04-14T00:00:00+03:00">
     <day>14</day>
     <month>04</month>
     <year>2022</year>
    </date>
    <date date-type="accepted" iso-8601-date="2022-05-12T00:00:00+03:00">
     <day>12</day>
     <month>05</month>
     <year>2022</year>
    </date>
   </history>
   <self-uri xlink:href="https://zh-szf.ru/en/nauka/article/49818/view">https://zh-szf.ru/en/nauka/article/49818/view</self-uri>
   <abstract xml:lang="ru">
    <p>Статья посвящена юбилею открытия волн Альвена. Представление о волнах Альвена сыграло выдающуюся роль в становлении и развитии космической электродинамики. Их отличительная особенность состоит в том, что в каждой точке пространства вектор групповой скорости и вектор внешнего магнитного поля коллинеарны друг другу. В результате волны Альвена могут переносить импульс, энергию и информацию на большие расстояния. Мы кратко описываем два резонатора Альвена, один из которых формируется в ионосфере, а второй, предположительно, существует в радиационном поясе Земли. Существование ионосферного резонатора обосновано теоретически и подтверждено многочисленными наблюдениями. Второй резонатор располагается между точками отражения, расположенными высоко над Землей симметрично относительно плоскости геомагнитного экватора</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The article is dedicated to the anniversary of the discovery of Alfvén waves. The concept of Alfvén waves has played an outstanding role in the formation and development of cosmic electrodynamics. A distinctive feature of Alfvén waves is that at each point in space the group velocity vector and the external magnetic field vector are collinear to each other. As a result, Alfvén waves can carry momentum, energy, and information over long distances. We briefly describe two Alfvén resonators, one of which is formed in the ionosphere, and the second presumably exists in Earth’s radiation belt. The existence of the ionospheric resonator is justified theoretically and confirmed by numerous observations. The second resonator is located between reflection points located high above Earth symmetrically with respect to the plane of the geomagnetic equator.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>скорость Альвена</kwd>
    <kwd>закон дисперсии</kwd>
    <kwd>групповая скорость</kwd>
    <kwd>геометрическая оптика</kwd>
    <kwd>тяжелые ионы</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>Alfvén velocity</kwd>
    <kwd>dispersion law</kwd>
    <kwd>group velocity</kwd>
    <kwd>geometrical optics</kwd>
    <kwd>heavy ions</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Исследование выполнено за счет гранта Российского научного фонда № 22-27-00280, [https://rscf.ru/project/22-27-00280]</funding-statement>
    <funding-statement xml:lang="en">The work was financially supported by the Russian Science Foundation (Grant No. 22-27-00280) [https://rscf.ru/project/22-27-00280]</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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