geomorfГеоморфология и палеогеографияGeomorfologiya i Paleogeografiya2949-17892949-179710.31857/10.31857/S2949178923040175GLJFRDgeomorf-3283Research ArticleСтатьиArticleГеоморфологические процессы в Центральной Камчатской депрессии (п-ов Камчатка, Северо-Западная Пацифика) в последние 30 тыс. летGeomorphological processes in The Central Kamchatka Depression (The Kamchatka Peninsula, NE Pacific) during the last 30 Kahttps://orcid.org/0000-0003-3733-1922ЗеленинЕ. А.ZeleninE. A.egorzelenin@mail.ruГуриновА. Л.GurinovA. L.gurinov.artem@gmail.comЗахаровА. Л.ZakharovA. L.zaanleo@gmail.comПономареваВ. В.PonomarevaV. V.vera.ponomareva1@gmail.comГариповаС. Т.GaripovaS. T.garipova-st@yandex.ruГеологический институт РАН, МоскваРоссияGeological Institute, Russian Academy of Sciences, MoscowRussian FederationИнститут географии РАН, Москва; Национальный исследовательский университет “Высшая школа экономики”, Москва; Российский университет дружбы народов, МоскваРоссияInstitute of Geography, Russian Academy of Sciences, Moscow; National Research University Higher School of Economics, Moscow; Рeoples’ Friendship University of Russia (RUDN University), MoscowRussian FederationИнститут географии РАН, МоскваРоссияInstitute of Geography, Russian Academy of Sciences, MoscowRussian FederationИнститут вулканологии и сейсмологии ДВО РАН, Петропавловск-КамчатскийРоссияInstitute of Volcanology and Seismology, Petropavlovsk-KamchatskyRussian Federation202314122023544226–237Copyright © Зеленин Е.А., Гуринов А.Л., Захаров А.Л., Пономарева В.В., Гарипова С.Т., 20232023Зеленин Е.А., Гуринов А.Л., Захаров А.Л., Пономарева В.В., Гарипова С.Т.Zelenin E.A., Gurinov A.L., Zakharov A.L., Ponomareva V.V., Garipova S.T.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://geomorphology.igras.ru/jour/article/view/3283

В статье представлена реконструкция геоморфологических процессов в Центральной Камчатской депрессии (ЦКД) в последние 30 тыс. лет, включая максимум последнего оледенения. В исследуемый период наиболее масштабными геоморфологическими процессами были рост и эволюция вулканических построек на фоне постоянного тектонического опускания ЦКД. Развитие ледников, спускавшихся с активных вулканов, зависело не только от общих климатических факторов, но и от истории извержений этих вулканов.

Наиболее заметной геоморфологической особенностью изучаемого времени являются формирование и спуск гигантского ледниково-подпрудного палеоозера. Накопленные данные о хронологии оледенений и вулканизма позволили предложить модель спуска палеоозера при постепенной деградации ледника, спускавшегося с вулкана Шивелуч. Спуск озера начался около 19 тыс. л. н., во время оледенения, и по всей видимости был связан не с климатическими факторами, а с секторными обрушениями, уменьшавшими ледоем вулкана Шивелуч. Продолжающееся тектоническое опускание ЦКД препятствовало полному осушению этого палеоозера. Даже сейчас на аномально широкой пойме реки Камчатка располагается система озер, сопоставимая по площади с крупнейшими озерами полуострова.

The paper presents a reconstruction of geomorphological processes in the Central Kamchatka Depression (CKD) since 30 ka, including the global LGM time. Major geomorphological processes of this period included the evolution of volcanic edifices accompanied by steady tectonic submergence. Glaciers that originatedfrom volcanic edifices were greatly affected by both climatic forcing and the eruptive history of their host volcanoes.

The most prominent geomorphological feature of the studied time was a giant paleolake filled the CKD. The reassessed extent and timing of glaciation and volcanism provided the possible lake fill and discharge model due to the evolution of a piedmont glacier originating from the Old Shiveluch Volcano edifice. The lake discharge likely was gradual and started some 19 ka during the cold settings of LGM, and therefore did not have a climatic origin. The most possible trigger of the discharge is the change in ice supply from the highly active Shiveluch Volcano due to large sector collapses. During the Holocene, the ongoing tectonic submergence of the CKD have been preventing the complete drainage of this paleolake. Even now, an enormously wide floodplain of the Kamchatka River hosts a lacustrine system with a total area of water surface comparable to the largest lakes of the peninsula

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The authors declare that there are no conflicts of interest present.