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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">aari</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы Арктики и Антарктики</journal-title><trans-title-group xml:lang="en"><trans-title>Arctic and Antarctic Research</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0555-2648</issn><issn pub-type="epub">2618-6713</issn><publisher><publisher-name>Государственный научный центр Российской Федерации Арктический и антарктический научно-исследовательский институт</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.30758/0555-2648-2019-65-1-92-104</article-id><article-id custom-type="elpub" pub-id-type="custom">aari-136</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ГЕОЛОГИЯ И ГЕОФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>GEOLOGY AND GEOPHYSICS</subject></subj-group></article-categories><title-group><article-title>Электротомография чаши дренированного термокарстового озера на о. Курунгнах в дельте р. Лены</article-title><trans-title-group xml:lang="en"><trans-title>Electrical resistivity tomography of drained thermokarst lake basin on Kurungnakh island in the Lena river delta</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Оленченко</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Olenchenko</surname><given-names>V. V.</given-names></name></name-alternatives><email xlink:type="simple">OlenchenkoVV@ipgg.sbras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цибизов</surname><given-names>Л. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsibizov</surname><given-names>L. V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Картозия</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kartoziya</surname><given-names>A. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Есин</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Esin</surname><given-names>E. I.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное учреждение науки Институт нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН; &#13;
Новосибирский национальный исследовательский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch of Russian Academy of Sciences; &#13;
Novosibirsk national research state university</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>08</day><month>04</month><year>2019</year></pub-date><volume>65</volume><issue>1</issue><fpage>92</fpage><lpage>104</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Оленченко В.В., Цибизов Л.В., Картозия А.А., Есин Е.И., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Оленченко В.В., Цибизов Л.В., Картозия А.А., Есин Е.И.</copyright-holder><copyright-holder xml:lang="en">Olenchenko V.V., Tsibizov L.V., Kartoziya A.A., Esin E.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.aaresearch.science/jour/article/view/136">https://www.aaresearch.science/jour/article/view/136</self-uri><abstract><p>В статье представлены результаты изучения геоэлектрического строения разреза в пределах чаши термокарстового озера, дренировавшего около 30 лет назад. Предшествующими электроразведочными исследованиями в центре котловины зарегистрирована зона пониженных сопротивлений, предположительно связанная с остаточной температурной аномалией. Главной целью настоящей работы являлось установление проявления остаточного теплового эффекта от промерзшего подозерного талика в электрическом поле. Зондирования проведены методом электротомографии с использованием дипольно-осевой установки. В объемной геоэлектрической модели, построенной по результатам 3D-инверсии, оконтурена аномалия пониженного удельного электрического сопротивления на глубине 25 м. На основе приближенной зависимости удельного электросопротивления пород от температуры предположено, что температура пород, прогнозируемая по данным электроразведки, под аласом в центральной части промерзшего талика на 5–6 ºС выше, чем температура пород в данном районе. Численным моделированием теплового поля подтверждено существование остаточной тепловой аномалии после промерзания подозерного талика.</p></abstract><trans-abstract xml:lang="en"><p>Evolution of permafrost under thermokarst lakes is an actual question in the light of such problems of cryolythic zone research as greenhouse gas emission, permafrost degradation and cryovolcanism. Recently drained thermokarst lake provide an opportunity to study under-lake permafrost state with ground geophysical methods. This lake located on Kurungnakh island (composed of Yedoma ice complex deposits) in the Lena delta was studied with electrical resistivity tomography. Local low-resistivity anomaly in the central part of the lake was found during previous geophysical research. Main goal of this work is detection of residual thermal effect from a frozen under-lake talik in an electric field. Satellite images of different years show that the drainage has taken place about 30 years ago. The area of the lake was covered in 2016 by high-resolution aerial imagery (5 cm/pixel), then digital elevation model was built using photogrammetry. These data were used for geomorphological description of the alas (depression in permafrost after lake drainage). The alas depth reaches 8 m, its size is about 300 × 500 m. It was formed probably on the last stage of Holocene thermokarst activity and it is relatively shallow in comparison to other typical alases on the island. A number of baijarachs (as a result of polygonal ice wedges thawing) were observed on the alas bottom. A line of the steepest slope marks a coast line of the lake, which allows to estimate a volume of water, which was contained in it earlier. Electrical resistivity tomography was implemented on 8 parallel profiles of 235 m. Measurements were conducted with dipole-dipole array. Basing on 3-dimensional inversion results a 3-dimensional resistivity model of under-lake deposits up to 40 m deep was made. Relatively low resistivity area (16–25 kOhm·m in comparison to 50–100 kOhm·m) was registered at the depth of 15–35 m. It is probably linked to a temperature anomaly (–3...–5 °С in comparison with –8.5 °С average value of the region). Therefore the under lake talik was fully frozen but the rest of temperature anomaly is still observable. 3-dimensional finite-element modeling of talik propagation (500 years) and refreezing (30 years) was done in axisymmetric setting taking phase transition into account. Temperature anomaly up to 0 °С in its center at the depth of 35 m was obtained as a result of the modeling. It qualitatively confirms the interpretation of electrical resistivity tomography data on the residual temperature anomaly below the basin of the drained lake.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>многолетнемерзлые породы</kwd><kwd>термокарстовое озеро</kwd><kwd>электротомография</kwd></kwd-group><kwd-group xml:lang="en"><kwd>electrical-resistivity tomography</kwd><kwd>permafrost</kwd><kwd>thermokarst lake</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследования поддержаны: проектами ФНИ №0331-2019-0007; № 0331-2019-0016 и Проектом II.61 Комплексной программы СО РАН «Междисциплинарные интеграционные исследования». Авторы благодарят информационно-вычислительный центр Новосибирского государственного университета за предоставленные вычислительные ресурсы.</funding-statement><funding-statement xml:lang="en">Research is funded by: projects FSR № 0331-2019-0007; № 0331-2019-0016 and Project II.61 of the Complex SB RAS program “Interdisciplinary integrative researches”. We are grateful to the Supercomputing Center of the Novosibirsk State University for provided computational resources.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Оленченко В.В., Синицкий А.И., Антонов Е.Ю., Ельцов И.Н., Кушнаренко О.Н., Плотников А.Е., Потапов В.В., Эпов М.И. Результаты геофизических исследований территории геологического новообразования «Ямальский кратер» // Криосфера Земли. 2015. Т. 19. № 4. С. 94–105.</mixed-citation><mixed-citation xml:lang="en">Olenchenko V.V., Sinitskii A.I., Antonov E.Iu., El’tsov I.N., Kushnarenko O.N., Plotnikov A.E., Potapov V.V., Epov M.I. The results of geophysical studies of the territory of the geological new formation “Iamal’skii krater”. Kriosfera Zemli. Earth’s Cryosphere. 2015, 19, 4: 94–105. [In Russian].</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Епифанов В.А. Взрывные воронки-колодцы и актуальность изучения роли дегазации недр в климатических событиях и ландшафтных преобразованиях четвертичного периода // Бюллетень Комиссии по изучению четвертичного периода. 2018. № 76. 36 с.</mixed-citation><mixed-citation xml:lang="en">Epifanov V.A. Explosive crater-wells and the relevance of studying the role of degassing the subsurface in climatic events and landscape transformations of the Quaternary period. Biulleten’ Komissii po izucheniiu chetvertichnogo perioda. Bulletin of the Commission for the Study of the Quaternary Period. 2018, 76: 1–36. [In Russian].</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Buldovicz S.N., Khilimonyuk V.Z., Bychkov A.Y.,Ospennikov E.N., Vorobyev S.A.,Gunar A.Y., Gorshkov E.I., Chuvilin E.M., Cherbunina M.Y., Kotov P.I., Lubnina N.V., Motenko R.G., Amanzhurov R.M. Cryovolcanism on the Earth: Origin of a Spectacular Crater in the Yamal Peninsula (Russia) // Scientific reports. 2018. V. 8. № 1. P. 13534–13540.</mixed-citation><mixed-citation xml:lang="en">Buldovicz S.N., Khilimonyuk V.Z., Bychkov A.Y.,Ospennikov E.N., Vorobyev S.A.,Gunar A.Y., Gorshkov E.I., Chuvilin E.M., Cherbunina M.Y., Kotov P.I., Lubnina N.V., Motenko R.G., Amanzhurov R.M. Cryovolcanism on the Earth: Origin of a Spectacular Crater in the Yamal Peninsula (Russia). Scientific reports. 2018, 8, 1: 13534–13540.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Bastviken D., Cole J., Pace M., Tranviket L. Methane emissions from lakes: Dependence of lake characteristics, two regional assessments, and a global estimate // Global biogeochemical cycles. 2004. V. 18. № 4. P. 1–12.</mixed-citation><mixed-citation xml:lang="en">Bastviken D., Cole J., Pace M., Tranviket L. Methane emissions from lakes: Dependence of lake characteristics, two regional assessments, and a global estimate. Global biogeochemical cycles. 2004, 18, 4: 1–12.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Walter K.M., Chanton J.P., Chapin III F. S., Schuur E.A.G., Zimov S.A. Methane production and bubble emissions from arctic lakes: Isotopic implications for source pathways and ages // Journal of Geophysical Research: Biogeosciences. 2008. V. 113. № G3. P. 1–16.</mixed-citation><mixed-citation xml:lang="en">Walter K.M., Chanton J.P., Chapin III F. S., Schuur E.A.G., Zimov S.A. Methane production and bubble emissions from arctic lakes: Isotopic implications for source pathways and ages. Journal of Geophysical Research: Biogeosciences. 2008, 113 (G3): 1–16.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Schuur E.A.G., McGuire A. D., C. Schädel, Grosse G., Harden J.W., Hayes D.J., Hugelius G., Koven C.D., Kuhry P., Lawrence D.M., Natali S.M., Olefeldt D., Romanovsky V.E., Schaefer K., Turetsky M.R., Treat C.C., Vonk J.E. Climate change and the permafrost carbon feedback // Nature. 2015. V. 520. P. 171–179.</mixed-citation><mixed-citation xml:lang="en">Schuur E.A.G., McGuireA. D., C. Schädel, Grosse G., Harden J.W., Hayes D.J.,Hugelius G., Koven C.D., Kuhry P., Lawrence D.M., Natali S.M., Olefeldt D., Romanovsky V.E., Schaefer K., Turetsky M.R., Treat C.C., Vonk J.E. Climate change and the permafrost carbon feedback. Nature. 2015, 520: 171–179.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Schwamborn G.J., Dix J.K., Bull J.M., Racholdet V. High–resolution seismic and ground penetrating radar-geophysical profiling of a thermokarst lake in the western Lena Delta, Northern Siberia // Permafrost and Periglacial Processes. 2002. V. 13. № 4. P. 259–269.</mixed-citation><mixed-citation xml:lang="en">Schwamborn G.J., Dix J.K., Bull J.M., Racholdet V. High–resolution seismic and ground penetrating radar–geophysical profiling of a thermokarst lake in the western Lena Delta, Northern Siberia. Permafrost and Periglacial Processes. 2002, 13, 4: 259–269.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Creighton A.L., Parsekian A.D., Angelopoulos M., Jones B.M., Bondurant A., Engram M., Lenz J., Overduin P.P., Grosse G., Babcock E., Arpet C.D. Transient electromagnetic surveys for the determination of talik depth and geometry beneath thermokarst lakes // Journal of Geophysical Research: Solid Earth. 2018. Vol. 123. № 11. P. 9310–9323.</mixed-citation><mixed-citation xml:lang="en">Creighton A.L., Parsekian A.D., Angelopoulos M., Jones B.M., Bondurant A., Engram M., Lenz J., Overduin P.P., Grosse G., Babcock E., Arpet C.D. Transient electromagnetic surveys for the determination of talik depth and geometry beneath thermokarst lakes. Journal of Geophysical Research: Solid Earth. 2018, 123: 9310–9323.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Mackay J.R. A full-scale field experiment (1978–1995) on the growth of permafrost by means of lake drainage, western Arctic coast: a discussion of the method and some results // Canadian Journal of Earth Sciences. 1997. V. 34. № 1. P. 17–33.</mixed-citation><mixed-citation xml:lang="en">Mackay J.R. A full–scale field experiment (1978–1995) on the growth of permafrost by means of lake drainage, western Arctic coast: a discussion of the method and some results. Canadian Journal of Earth Sciences. 1997, 34, 1: 17–33.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Ling F., Zhang T. Numerical simulation of permafrost thermal regime and talik development under shallow thermokarst lakes on the Alaskan Arctic Coastal Plain // Journal of Geophysical Research 2003. V. 108 (D16). P. 26–36.</mixed-citation><mixed-citation xml:lang="en">Ling F., Zhang T. Numerical simulation of permafrost thermal regime and talik development under shallow thermokarst lakes on the Alaskan Arctic Coastal Plain. Journal of Geophysical Research. 2003, 108 (D16): 26–36.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Ling F., Zhang T. Modeling study of talik freeze-up and permafrost response under drained thaw lakes on the Alaskan Arctic Coastal Plain // Journal of Geophysical Research: Atmospheres. 2004. V. 109. № D1. P. 1–9.</mixed-citation><mixed-citation xml:lang="en">Ling F., Zhang T. Modeling study of talik freeze–up and permafrost response under drained thaw lakes on the Alaskan Arctic Coastal Plain. Journal of Geophysical Research: Atmospheres. 2004, 109 (D1): 1–9.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Zhou W., Huang S.L. Modeling Impacts of Thaw Lakes to Ground Thermal Regime in Northern Alaska // Journal of Cold Regions Engineering. 2004. V. 18. P. 70–87.</mixed-citation><mixed-citation xml:lang="en">Zhou W., Huang SL. Modeling Impacts of Thaw Lakes to Ground Thermal Regime in Northern Alaska. Journal of Cold Regions Engineering. 2004, 18: 70–87.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">West J.J., Plug L.J. Time-dependent morphology of thaw lakes and taliks in deep and shallow ground ice // Journal of Geophysical Research: Earth Surface. 2008. V. 113. № F1. P. 1–14.</mixed-citation><mixed-citation xml:lang="en">West J.J., Plug L.J. Time-dependent morphology of thaw lakes and taliks in deep and shallow ground ice. Journal of Geophysical Research: Earth Surface. 2008, 113 (F1): 1–14.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Plug L.J., West J.J. Thaw lake expansion in a two–dimensional coupled model of heat transfer, thaw subsidence, and mass movement // Journal of Geophysical Research: Earth Surface. 2009. V. 114. № F1. P. 1–18.</mixed-citation><mixed-citation xml:lang="en">Plug L.J., West J.J. Thaw lake expansion in a two–dimensional coupled model of heat transfer, thaw subsidence, and mass movement. Journal of Geophysical Research: Earth Surface. 2009, 114 (F1): 1–18.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Tsibizov L., Fage A., Rusalimova O., Fadeev D., Olenchenko V., Yeltsov I., Kashirtsev V. Integrated non-invasive geophysical-soil studies of permafrost upper layer and aerial high-resolution photography // Berichte zur Polar- und Meeresforschung. Reports on polar and marine research. 2017. V. 709. P. 56–69.</mixed-citation><mixed-citation xml:lang="en">Tsibizov L., Fage A., Rusalimova O., Fadeev D., Olenchenko V., Yeltsov I., Kashirtsev V. Integrated non-invasive geophysical-soil studies of permafrost upper layer and aerial high–resolution photography. Berichte zur Polar- und Meeresforschung. Reports on polar and marine research. 2017, 709: 56–69.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Schwamborn G., Rachold V., Grigoriev M.N. Late Quaternary sedimentation history of the Lena Delta // Quaternary International. 2002. V. 89. P. 119–134.</mixed-citation><mixed-citation xml:lang="en">Schwamborn G., Rachold V., Grigoriev M.N. Late Quaternary sedimentation history of the Lena Delta. Quaternary International. 2002, 89: 119–134.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Morgenstern A., Grosse G., Günther F., Fedorova I.V., Schirrmeister L. Spatial analyses of thermokarst lakes and basins in Yedoma landscapes of the Lena Delt // The Cryosphere. 2011. V. 5. P. 849–867.</mixed-citation><mixed-citation xml:lang="en">Morgenstern A., Grosse G., Günther F., Fedorova I.V., Schirrmeister L. Spatial analyses of thermokarst lakes and basins in Yedoma landscapes of the Lena Delt. The Cryosphere. 2011, 5: 849–867.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Wetterich S., Kuzmina S., Andreev A.A., Kienast F., Meyer H., Schirrmeister L., Kuznetsova T., Sierralta M. Palaeoenvironmental dynamics inferred from late Quaternary permafrost deposits on Kurungnakh Island, Lena Delta, Northeast Siberia, Russia // Quaternary Science Reviews. 2008. V. 27. P. 1523–1540.</mixed-citation><mixed-citation xml:lang="en">Wetterich S., Kuzmina S., Andreev A.A., Kienast F., Meyer H., Schirrmeister L., Kuznetsova T., Sierralta M. Palaeoenvironmental dynamics inferred from late Quaternary permafrost deposits on Kurungnakh Island, Lena Delta, Northeast Siberia, Russia. Quaternary Science Reviews. 2008, 27: 1523–1540.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Балков Е.В., Панин Г.Л., Манштейн Ю.А., Манштейн А.К., Белобородов В.А. Электротомография: аппаратура, методика и опыт применения // Геофизика. 2012. № 6. С. 54–63.</mixed-citation><mixed-citation xml:lang="en">Balkov E.V., Panin G.L., Manshtein Iu.A., Manshtein A.K., Beloborodov V.A. Electrical-resistivity tomography: devices, methods and experience of use. Geofizika. Geophysics. 2012, 6: 54–63. [In Russian].</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Loke M.H., Barker R.D. Rapid least–squares inversion of apparent resistivity pseudosections using a quasi-Newton method // Geophy. Prospec. 1996. V. 44. P. 131–152.</mixed-citation><mixed-citation xml:lang="en">Loke M.H., Barker R.D. Rapid least-squares inversion of apparent resistivity pseudosections using a quasi-Newton method. Geophy. Prospec. 1996, 44: 131–152.</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Боголюбов А.Н., Боголюбова Н.П., Мозганова Е.Я. Рекомендации по комплексированию геофизических методов при мерзлотной съемке. ПНИИИС. М.: Стройиздат, 1987. 86 с.</mixed-citation><mixed-citation xml:lang="en">Bogoliubov A.N., Bogoliubova N.P., Mozganova E.Ia. Rekomendatsii po kompleksirovaniiu geofizicheskikh metodov pri merzlotnoi s”emke. Recommendations on the integration of geophysical methods in cryogenic surveys. PNIIIS. Moscow: Stroiizdat, 1987: 86 p. [In Russian].</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Boike J., Georgi C., Kirilin G., Muster S., Abramova K., Fedorova I., Chetverova A., Grigoriev M., Bornemann N., Langer M. Thermal processes of thermokarst lakes in the continuous permafrost zone of northern Siberia-observations and modeling (Lena River Delta, Siberia) // Biogeosciences. 2015. V. 12 (20). P. 5941–5965.</mixed-citation><mixed-citation xml:lang="en">Boike J., Georgi C., Kirilin G., Muster S., Abramova K., Fedorova I., Chetverova A., Grigoriev M., Bornemann N., Langer M. Thermal processes of thermokarst lakes in the continuous permafrost zone of northern Siberia-observations and modeling (Lena River Delta, Siberia). Biogeosciences. 2015, 12 (20): 5941–5965.</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Boike J., Kattenstroth B., Abramova E., Bornemann N., Chetverova A., Fedorova I., Fröb K., Grigoriev M., Grüber M., Kutzbach L., Langer M., Minke M., Muster S., Piel K., Pfeiffer E.-M., Stoof G., Westermann S., Wischnewski K., Wille C., Hubberten H.-W. Baseline characteristics of climate, permafrost and land cover from a new permafrost observatory in the Lena River Delta, Siberia (1998–2011) // Biogeosciences. 2013. V. 10 (3). P. 2105–2128.</mixed-citation><mixed-citation xml:lang="en">Boike J., Kattenstroth B., Abramova E., Bornemann N., Chetverova A., Fedorova I., Fröb K., Grigoriev M., Grüber M., Kutzbach L., Langer M., Minke M., Muster S., Piel K., Pfeiffer E.-M., Stoof G., Westermann S., Wischnewski K., Wille C., Hubberten H.-W. Baseline characteristics of climate, permafrost and land cover from a new permafrost observatory in the Lena River Delta, Siberia (1998–2011). Biogeosciences. 2013, 10 (3): 2105–2128.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
