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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">27289</article-id>
   <article-id pub-id-type="doi">10.12737/szf-52201904</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>14-я Китайскo-Российская конференция по космической погоде. Хайкоу, Китай, 5–9 ноября 2018 г.</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>14th China-Russia Space Weather Workshop. November 5–9, 2018, Haikou, China</subject>
    </subj-group>
    <subj-group>
     <subject>14-я Китайскo-Российская конференция по космической погоде. Хайкоу, Китай, 5–9 ноября 2018 г.</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">Characteristics of double sodium layer over Haikou, China (20.0° N, 110.1° E)</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Характеристики двойного натриевого слоя над Хайкоу, Китай (20.0° N, 110.1° E)</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Дали</surname>
       <given-names>Ян </given-names>
      </name>
      <name xml:lang="en">
       <surname>Dali</surname>
       <given-names>Yang </given-names>
      </name>
     </name-alternatives>
     <email>147803434@qq.com</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Теминь</surname>
       <given-names>Чжан </given-names>
      </name>
      <name xml:lang="en">
       <surname>Tiemin</surname>
       <given-names>Zhang </given-names>
      </name>
     </name-alternatives>
     <email>78833508@qq.com</email>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Цзихун</surname>
       <given-names>Ван </given-names>
      </name>
      <name xml:lang="en">
       <surname>Jihong</surname>
       <given-names>Wang </given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Цзяньцин</surname>
       <given-names>У </given-names>
      </name>
      <name xml:lang="en">
       <surname>Jianqing</surname>
       <given-names>Wu </given-names>
      </name>
     </name-alternatives>
     <email>415623408@qq.com</email>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Линьмао</surname>
       <given-names>Ван </given-names>
      </name>
      <name xml:lang="en">
       <surname>Linmao</surname>
       <given-names>Wang </given-names>
      </name>
     </name-alternatives>
     <email>415746442@qq.com</email>
     <xref ref-type="aff" rid="aff-5"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Сюй</surname>
       <given-names>Цзоу </given-names>
      </name>
      <name xml:lang="en">
       <surname>Xu</surname>
       <given-names>Zou </given-names>
      </name>
     </name-alternatives>
     <email>25878671@qq.com</email>
     <xref ref-type="aff" rid="aff-6"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Хунянь</surname>
       <given-names>Пэн </given-names>
      </name>
      <name xml:lang="en">
       <surname>Hongyan</surname>
       <given-names>Peng </given-names>
      </name>
     </name-alternatives>
     <email>mdjphy@163.com</email>
     <xref ref-type="aff" rid="aff-7"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Хайнаньский педагогический университет</institution>
     <city>Хайкоу</city>
     <country>Китайская Народная Республика</country>
    </aff>
    <aff>
     <institution xml:lang="en">Hainan Normal University</institution>
     <city>Haikou</city>
     <country>China</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Хайнаньский педагогический университет</institution>
     <city>Хайкоу</city>
     <country>Китайская Народная Республика</country>
    </aff>
    <aff>
     <institution xml:lang="en">Hainan Normal University</institution>
     <city>Haikou</city>
     <country>China</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Национальный центр науки о космосе, Академия наук КНР</institution>
     <city>Пекин</city>
     <country>Китайская Республика</country>
    </aff>
    <aff>
     <institution xml:lang="en">National Astronomical Observatories of Chinese Academy of Sciences</institution>
     <city>Beijing</city>
     <country>Taiwan</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Хайнаньский педагогический университет</institution>
     <city>Хайкоу</city>
     <country>Китайская Народная Республика</country>
    </aff>
    <aff>
     <institution xml:lang="en">Hainan Normal University</institution>
     <city>Haikou</city>
     <country>China</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-5">
    <aff>
     <institution xml:lang="ru">Хайнаньский педагогический университет</institution>
     <city>Хайкоу</city>
     <country>Китайская Народная Республика</country>
    </aff>
    <aff>
     <institution xml:lang="en">Hainan Normal University</institution>
     <city>Haikou</city>
     <country>China</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-6">
    <aff>
     <institution xml:lang="ru">Хайнаньский педагогический университет</institution>
     <city>Хайкоу</city>
     <country>Китайская Народная Республика</country>
    </aff>
    <aff>
     <institution xml:lang="en">Hainan Normal University</institution>
     <city>Haikou</city>
     <country>China</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-7">
    <aff>
     <institution xml:lang="ru">Хайнаньский педагогический университет</institution>
     <city>Хайкоу</city>
     <country>Китайская Народная Республика</country>
    </aff>
    <aff>
     <institution xml:lang="en">Hainan Normal University</institution>
     <city>Haikou</city>
     <country>China</country>
    </aff>
   </aff-alternatives>
   <volume>5</volume>
   <issue>2</issue>
   <fpage>30</fpage>
   <lpage>34</lpage>
   <self-uri xlink:href="https://naukaru.ru/en/nauka/article/27289/view">https://naukaru.ru/en/nauka/article/27289/view</self-uri>
   <abstract xml:lang="ru">
    <p>Изучено свойство структуры двойного натриевого слоя (ДНС) в мезосфере и нижней термосфере лидаром на низких широтах в Хайкоу (20.0° N, 110.1° E), Китай. В период с апреля 2010 по декабрь 2013 г. в общей сложности 377 дней наблюдались 21 ДНС. ДНС были зарегистрированы на средних широтах Пекина и Уханя (Китай), но редко регистрировались на низких широтах. Также были проанализированы и рассмотрены такие характеристики ДНС, как время появления, максимальная высота, полуширина на половине высоты (ПШПВ), длительность и т. д. В то же время критическая частота foEs и виртуальная высота h'Es спорадического E-слоя Es наблюдались ионозондом над Даньчжоу (19.0° N, 109.3° E). Обсуждаются такие их характеристики, как, например, различия во времени, различия высоты по сравнению с ДНС. Для генерирования зондирующего пучка использовался лазер Nd:YAG с накачкой красителей. Длина волны лазера на красителях была установлена на 589 нм с помощью натриевой флуоресцентной клетки. Флуоресцентные фотоны обратного рассеивания из натриевого слоя были получены телескопом с главным зеркалом Φ1000 мм.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>We study the property of double sodium layer structures (DSLs) in the mesosphere and lower thermosphere (MLT) by a lidar at the low-latitude location of Haikou (20.0° N, 110.1° E), China. From April 2010 to December 2013, 21 DSLs were observed within a total of 377 observation days. DSLs were recorded at middle latitudes of Beijing and Wuhan, China, but were rarely observed at low latitudes. We analyze and discuss characteristics of DSLs such as time of occurrence, peak altitude, FWHM, duration time, etc. At the same time, the critical frequency foEs and the virtual height h'Es of the sporadic E layer Es were observed by an ionosonde over Danzhou (19.0° N, 109.3° E). We discuss such their characteristics as differences of time, differences of altitude compared to DSLs. We used an Nd:YAG laser pumped dye laser to generate the probing beam. The wavelength of the dye laser was set to 589 nm by a sodium fluorescence cell. The backscattered fluorescence photons from the sodium layer were collected by a telescope with the Φ1000 mm primary mirror.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>лидар</kwd>
    <kwd>ионосферный слой</kwd>
    <kwd>двойной натриевый слой</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>lidar</kwd>
    <kwd>ionospheric layer</kwd>
    <kwd>double sodium layer</kwd>
   </kwd-group>
  </article-meta>
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