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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">sergeogr</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Российской академии наук. Серия географическая</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2587-5566</issn><issn pub-type="epub">2658-6975</issn><publisher><publisher-name></publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.7868/S2658697525060036</article-id><article-id custom-type="elpub" pub-id-type="custom">sergeogr-3044</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>СОВРЕМЕННАЯ КОЛИЧЕСТВЕННАЯ И ПРОЦЕССНАЯ ГЕОМОРФОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MODERN QUANTITATIVE AND PROCESS GEOMORPHOLOGY</subject></subj-group></article-categories><title-group><article-title>Рельефообразование в геотермальных районах Курило-Камчатского региона: геологические условия и геоморфологические эффекты</article-title><trans-title-group xml:lang="en"><trans-title>Relief Formation in Geothermal Areas of the Kuril-Kamchatka Region: Geological Conditions and Geomorphological Effects</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>Лебедева</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Lebedeva</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">Ekaterina.lebedeva@gmail.com</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>Фролова</surname><given-names>Ю. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Frolova</surname><given-names>J. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">ju_frolova@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт географии РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Geography of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>22</day><month>02</month><year>2026</year></pub-date><volume>89</volume><issue>6</issue><issue-title>Географические закономерности, природные и антропогенные факторы и параметры развития рельефа Северной Евразии в позднем</issue-title><fpage>899</fpage><lpage>917</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лебедева Е.В., Фролова Ю.В., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Лебедева Е.В., Фролова Ю.В.</copyright-holder><copyright-holder xml:lang="en">Lebedeva E.V., Frolova J.V.</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://izvestia.igras.ru/jour/article/view/3044">https://izvestia.igras.ru/jour/article/view/3044</self-uri><abstract><p>Результаты многолетних геологических и геоморфологических полевых работ на островах Кунашир, Итуруп, Парамушир, а также на полуострове Камчатка показали, что на термальных полях и прилегающих к ним территориях наблюдается значительная активность денудационных процессов, в первую очередь, склоновых и эрозионных. Данные проведенных лабораторных исследований свидетельствуют, что в результате газогидротермальной проработки пород на подобных территориях происходит кардинальное изменение их состава, сопровождающееся разуплотнением и снижением прочностных свойств. Все это способствует гравитационному смещению значительных объемов материала на склонах, часто с перегораживанием русел водотоков. Развитие склоновых процессов дополнительно активизируется при наличии выходов термальных вод и за счет прогрева грунтов. В геотермальных районах многочисленны следы селей, причем нередко асезонных. В результате активизации линейной эрозии на обнаженных склонах могут формироваться участки бедлендов. Водотоки, дренирующие термальные поля, выносят значительное количество взвешенного и растворенного материала. Все это приводит к увеличению скорости денудации и формированию эрозионно-денудационных воронок и денудационных котловин на участках гидротермальных взрывов, а также к аномальному расширению долин водотоков в пределах термальных полей по сравнению с фоновыми участками. Данные наблюдений подтверждают и такой интересный феномен, как колебания топографической поверхности в пределах геотермальных зон, обусловленные как естественной миграцией термальных флюидов, так и их использованием при эксплуатации термальных месторождений. Очевидна необходимость продолжения исследований геотермальных районов Курило-Камчатского региона с использованием широкого спектра не только геологических, но и геоморфологических и картографических методов, в том числе применение новейших технологий, таких как радиолокационная интерферометрия.</p></abstract><trans-abstract xml:lang="en"><p>The results of long-term geological and geomorphological field work on the Kuril Islands (Kunashir, Iturup, and Paramushir islands) and Kamchatka Peninsula have shown significant activity of denudation processes in thermal fields and surrounding areas, among which landslides and erosion are the most common. The laboratory studies indicate that gas-hydrothermal alteration of rocks in geothermal regions results in a significant change in their composition, weakening and decrease in strength. These factors contribute to the gravitational displacement in slopes, often with blocking of river valleys. Slope displacement and failure is additionally activated by the thermal water discharges and soils heating. Geothermal areas often have numerous traces of debris flows, often non-seasonal. The activation of linear erosion on exposed slopes can result in the formation of badlands areas. Watercourses draining thermal fields can carry away significant amounts of suspended and dissolved material. It leads to an increase in denudation rates and the formation of erosion-denudation funnels and denudation basins in areas of hydrothermal explosions. It also causes an abnormal expansion of watercourse valleys within thermal fields compared to background areas. Our observations allow us to draw conclusions about surface deformation in geothermal fields, which is caused by the natural migration of thermal fluids and the exploitation of thermal deposits. Obviously, there is need to continue research of the geothermal areas at the Kuril-Kamchatka region using a wide range of geological, geomorphological and cartographic methods, including the innovative technologies such as radar interferometry.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>термальные поля</kwd><kwd>гидротермальное воздействие</kwd><kwd>аргиллизация</kwd><kwd>склоновые процессы</kwd><kwd>селеформирование</kwd><kwd>эрозия</kwd><kwd>Курило-Камчатская дуга</kwd></kwd-group><kwd-group xml:lang="en"><kwd>thermal fields</kwd><kwd>hydrothermal impact</kwd><kwd>argillization</kwd><kwd>slope processes</kwd><kwd>debris flow formation</kwd><kwd>erosion</kwd><kwd>Kuril-Kamchatka arc</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Статья подготовлена по материалам исследований по теме Государственного задания ИГ РАН № FMWS-2024-0005 и МГУ имени М.В. Ломоносова.</funding-statement><funding-statement xml:lang="en">The research was conducted as part of the Institute of Geography RAS State Assignment (project no. FMWS-2024-0005) and as part of the Lomonosov Moscow State University State Assignment.</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">Балдина Е.А., Лебедева Е.В., Аникина Н.В. Активность геоморфологических процессов на склонах речных долин в условиях газогидротермальных проявлений (по разновременным снимкам и ЦМР) // ИнтерКарто. ИнтерГИС. 2023. Т. 29. Ч. 1. С. 272–287. https://doi.org/10.35595/2414-9179-2023-1-29-272-287</mixed-citation><mixed-citation xml:lang="en">Baldina E.A., Lebedeva E.V., Anikina N.V. Activity of geomorphological processes on the slopes of river valleys in the conditions of gas-hydrothermal occurrences (based on multi-temporal images and DEM analysis). InterCarto. 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