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    <journal-meta>
      <journal-id journal-id-type="issn">2411-3336</journal-id>
      <journal-id journal-id-type="eissn">2541-9404</journal-id>
      <journal-title-group>
        <journal-title xml:lang="ru">Записки Горного института</journal-title>
        <journal-title xml:lang="en">Journal of Mining Institute</journal-title>
      </journal-title-group>
      <publisher>
        <publisher-name xml:lang="ru">Санкт-Петербургский горный университет императрицы Екатерины ΙΙ</publisher-name>
        <publisher-name xml:lang="en">Empress Catherine II Saint Petersburg Mining University</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id custom-type="edn" pub-id-type="custom">FAZCPB</article-id>
      <article-id custom-type="pmi" pub-id-type="custom">pmi-16595</article-id>
      <article-id pub-id-type="uri">https://pmi.spmi.ru/pmi/article/view/16595</article-id>
      <article-categories>
        <subj-group subj-group-type="section-heading" xml:lang="ru">
          <subject>Геология</subject>
        </subj-group>
        <subj-group subj-group-type="section-heading" xml:lang="en">
          <subject>Geology</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Electromagnetic sounding of deep lithosphere of the Belomorian Block (Fennoscandian Shield): the experiment “Kovdor-2023”</article-title>
        <trans-title-group xml:lang="ru">
          <trans-title>Эксперимент «Ковдор-2023» по глубинному электромагнитному зондированию литосферы Беломорского блока Фенноскандинавского щита</trans-title>
        </trans-title-group>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author" corresp="yes">
          <name name-style="eastern">
            <surname>Skorokhodov</surname>
            <given-names>Aleksei A.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Скороходов</surname>
              <given-names>А. А.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Skorokhodov</surname>
              <given-names>Aleksei A.</given-names>
            </name>
          </name-alternatives>
          <email>sammicne@yandex.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-3258-8844</contrib-id>
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        </contrib>
        <aff-alternatives id="aff1">
          <aff>
            <institution xml:lang="ru">Геологический институт КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Geological Institute KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Shevtsov</surname>
            <given-names>Aleksandr N.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Шевцов</surname>
              <given-names>А. Н.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Shevtsov</surname>
              <given-names>Aleksandr N.</given-names>
            </name>
          </name-alternatives>
          <email>anshev2019-01@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-1360-9937</contrib-id>
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        </contrib>
        <aff-alternatives id="aff2">
          <aff>
            <institution xml:lang="ru">Геологический институт КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Geological Institute KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Gannibal</surname>
            <given-names>Andrei E.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Ганнибал</surname>
              <given-names>А. Е.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Gannibal</surname>
              <given-names>Andrei E.</given-names>
            </name>
          </name-alternatives>
          <email>han_a_e@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-8921-8481</contrib-id>
          <xref ref-type="aff" rid="aff3"/>
        </contrib>
        <aff-alternatives id="aff3">
          <aff>
            <institution xml:lang="ru">Геологический Институт КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Geological Institute KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Kolobov</surname>
            <given-names>Vitalii V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Колобов</surname>
              <given-names>В. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Kolobov</surname>
              <given-names>Vitalii V.</given-names>
            </name>
          </name-alternatives>
          <email>1_i@mail.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0002-7541-3219</contrib-id>
          <xref ref-type="aff" rid="aff4"/>
        </contrib>
        <aff-alternatives id="aff4">
          <aff>
            <institution xml:lang="ru">Центр физико-технических проблем энергетики Севера КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Northern Energetics Research Centre KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Ivonin</surname>
            <given-names>Viktor V.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Ивонин</surname>
              <given-names>В. В.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Ivonin</surname>
              <given-names>Viktor V.</given-names>
            </name>
          </name-alternatives>
          <email>v.ivonin@ksc.ru</email>
          <contrib-id contrib-id-type="orcid">0000-0001-9154-5599</contrib-id>
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        </contrib>
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          <aff>
            <institution xml:lang="ru">ентр физико-технических проблем энергетики Севера КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Northern Energetics Research Centre KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
        <contrib contrib-type="author">
          <name name-style="eastern">
            <surname>Korotkova</surname>
            <given-names>Tamara G.</given-names>
          </name>
          <name-alternatives>
            <name name-style="eastern" xml:lang="ru">
              <surname>Короткова</surname>
              <given-names>Т. Г.</given-names>
            </name>
            <name name-style="western" xml:lang="en">
              <surname>Korotkova</surname>
              <given-names>Tamara G.</given-names>
            </name>
          </name-alternatives>
          <email>tmkrtkv@gmail.com</email>
          <contrib-id contrib-id-type="orcid">0000-0003-3379-8728</contrib-id>
          <xref ref-type="aff" rid="aff6"/>
        </contrib>
        <aff-alternatives id="aff6">
          <aff>
            <institution xml:lang="ru">Геологический институт КНЦ РАН (Апатиты, Россия)</institution>
          </aff>
          <aff>
            <institution xml:lang="en">Geological Institute KSC RAS (Apatity, Russia)</institution>
          </aff>
        </aff-alternatives>
      </contrib-group>
      <pub-date pub-type="epub" iso-8601-date="2026-04-27">
        <day>27</day>
        <month>04</month>
        <year>2026</year>
      </pub-date>
      <pub-date date-type="collection">
        <year>2026</year>
      </pub-date>
      <volume>278</volume>
      <fpage>153</fpage>
      <lpage>162</lpage>
      <history>
        <date date-type="received" iso-8601-date="2024-10-14">
          <day>14</day>
          <month>10</month>
          <year>2024</year>
        </date>
        <date date-type="accepted" iso-8601-date="2025-12-24">
          <day>24</day>
          <month>12</month>
          <year>2025</year>
        </date>
        <date date-type="rev-recd" iso-8601-date="2026-03-25">
          <day>25</day>
          <month>03</month>
          <year>2026</year>
        </date>
      </history>
      <permissions>
        <copyright-statement xml:lang="ru">© 2026 А. А. Скороходов, А. Н. Шевцов, А. Е. Ганнибал, В. В. Колобов, В. В. Ивонин, Т. Г. Короткова</copyright-statement>
        <copyright-statement xml:lang="en">© 2026 Aleksei A. Skorokhodov, Aleksandr N. Shevtsov, Andrei E. Gannibal, Vitalii V. Kolobov, Viktor V. Ivonin, Tamara G. Korotkova</copyright-statement>
        <copyright-year>2026</copyright-year>
        <copyright-holder xml:lang="ru">А. А. Скороходов, А. Н. Шевцов, А. Е. Ганнибал, В. В. Колобов, В. В. Ивонин, Т. Г. Короткова</copyright-holder>
        <copyright-holder xml:lang="en">Aleksei A. Skorokhodov, Aleksandr N. Shevtsov, Andrei E. Gannibal, Vitalii V. Kolobov, Viktor V. Ivonin, Tamara G. Korotkova</copyright-holder>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="ru">
          <license-p>Эта статья доступна по лицензии Creative Commons Attribution 4.0 International (CC BY 4.0)</license-p>
        </license>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0" xml:lang="en">
          <license-p>This article is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0)</license-p>
        </license>
      </permissions>
      <self-uri xlink:type="simple" xlink:href="https://pmi.spmi.ru/pmi/article/view/16595">https://pmi.spmi.ru/pmi/article/view/16595</self-uri>
      <abstract xml:lang="ru">
        <p>Представлены результаты эксперимента «Ковдор-2023» по глубинному электромагнитному зондированию земной коры в пределах архейского основания юго-западной части Кольского региона с применением естественного источника – магнитотеллурического зондирования (МТЗ) и контролируемого источника – аудиомагнитотеллурического зондирования с контролируемым источником (CSAMT). Целью эксперимента было исследование электропроводности верхней части земной коры Беломорского блока Фенноскандинавского щита. Эксперимент являлся продолжением работ 1995 г., а также эксперимента «Ковдор-2015», по результатам которого был сделан вывод, что существование неоднородного промежуточного проводящего слоя (ДД-слоя) с продольной проводимостью в десятые доли и единицы сименсов в верхней части докембрийской кристаллической земной коры на глубинах до десяти километров является региональной характеристикой, закономерно присущей Фенноскандинавскому щиту. В ходе эксперимента 2023 г. применены новейшие технологии в области генераторно-измерительной техники и новые методы обработки данных. По результатам предыдущих исследований выявлена необходимость расширения частотного диапазона в сторону высоких частот для измерительной аппаратуры, а также улучшенной синхронизации между источником и приемником. Для выполнения эксперимента были созданы новая генераторная группа и новое электронное устройство – блок управления генератором и регистрации выходного тока источника, а также разработана методика синхронной обработки временных рядов силы тока в источнике и компонент электромагнитного поля в точке наблюдений. Эксперимент «Ковдор-2023» выполнен с применением нового генератора и новой измерительной системы, что позволило получить дополнительные сведения о верхней части исследуемого объекта. Проведена синхронная обработка новых данных с учетом материалов и опыта предыдущего эксперимента, включающая учет статических искажений и токов смещения. Построен геоэлектрический разрез по совокупным данным МТЗ и CSAMT с применением программы MARE2DEM.</p>
      </abstract>
      <abstract xml:lang="en">
        <p>The results of the “Kovdor-2023” experiment on deep electromagnetic sounding of the Earth’s crust within the Archean basement of the southwest of the Kola Region with natural (magnetotelluric sounding, MTS) and artificial (controlled source audio magnetotelluric sounding, CSAMT) sources are presented. The experiment was intended to study the electrical conductivity of the upper Earth’s crust in the area of the Belomorian Block of the Fennoscandian Shield in continuation of the work of 1995, as well as the “Kovdor-2015” experiment, which suggested that the presence of a heterogeneous conductive layer (DD layer) with longitudinal conductivity from tenths to units of siemens in the upper part of the Precambrian crystalline crust at depths of up to ten kilometers is an inherent regional characteristic of the Fennoscandian Shield. During the 2023 experiment, technologically improved versions of field generating and measuring equipment and the new data processing methods were used. The earlier studies have identified the need for the modified measuring equipment with the frequency range expanded towards high frequencies, as well as for better synchronization between the source and receiver. Thus, to carry out the experiment, a new generator group and a new electronic unit combining functions of the control unit for the generator and the source output recorder, as well as a technique for synchronous processing of time series of current in the source and the electromagnetic field component at the observation point, were developed. The “Kovdor-2023” experiment was carried out using a new generator and a new measuring system, which made it possible to obtain additional information about the upper part of the object studied. Synchronous processing of new data was carried out, taking into account the materials and experience of the previous experiment, including static distortions and displacement currents. MTS and CSAMT data were used to construct a geoelectric section using the MARE2DEM program.</p>
      </abstract>
      <kwd-group xml:lang="ru">
        <title>Ключевые слова</title>
        <kwd>электропроводность</kwd>
        <kwd>магнитотеллурические зондирования</kwd>
        <kwd>частотные зондирования</kwd>
        <kwd>статические искажения</kwd>
        <kwd>дилатантно-диффузионный слой</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>electrical conductivity</kwd>
        <kwd>magnetotelluric sounding</kwd>
        <kwd>frequency sounding</kwd>
        <kwd>static distortion</kwd>
        <kwd>dilatant-diffusion layer</kwd>
      </kwd-group>
      <funding-group>
        <funding-statement xml:lang="ru">Работа поддержана грантом РНФ № 22-17-00208.</funding-statement>
        <funding-statement xml:lang="en">The work was supported by RSF foundation, grant N 22-17-00208.</funding-statement>
      </funding-group>
    </article-meta>
  </front>
  <body/>
  <back>
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