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Catastrophic detachment and high-velocity long-runout flow of Kolka Glacier, Caucasus Mountains, Russia in 2002статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Evans Stephen G., Tutubalina Olga V., Drobyshev Valery N., Chernomorets Sergey S., McDougall Scott, Petrakov Dmitry A., Hungr Oldrich
- Журнал: Geomorphology
- Том: 105
- Номер: 3-4
- Год издания: 2009
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 314
- Последняя страница: 321
- DOI: 10.1016/j.geomorph.2008.10.008
- Аннотация: In September 2002, a catastrophic geomorphic event occurred in the Caucasus Mountains, southern Russia. in which almost the entire mass of Kolka Glacier detached from its bed, accelerated to a very high velocity (max. 65-80 m/s), and traveled a total distance of 19 km downstream as a glacier-debris flow. Based on the interpretation of satellite imagery obtained only 8.5 h before the event occurred, the analysis of seismograms from nearby seismic stations, and subsequent detailed field observations and measurements, we suggest that this remarkable event was not a response to impulse loading from a rock avalanche in the mountainside above the glacier, or to glacier surging, but due entirely to the static and delayed catastrophic response of the Kolka glacier to ice and debris loading over a period of months prior to the September 20 detachment. We reconstruct the glacier-debris flow using field observations in conjunction with the interpretation of seismographs from nearby seismic stations and successfully simulate the behaviour (runout, velocity, and deposition) of the post-detachment glacier-debris flow using a three-dimensional analytical model. Our demonstration of a standing-start hypothesis in the 2002 Kolka Glacier detachment has substantial implications for glacier hazard assessment and risk management strategies in valleys downstream from unstable debris-covered glaciers in the mountain regions of the world. (C) 2008 Elsevier B.V. All rights reserved.
- Добавил в систему: Тутубалина Ольга Валерьевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Kolka_geomorphology.pdf | 2,5 МБ | 9 декабря 2017 [chernomorets] | |
| 2. | Полный текст | Evans_et_al_Kolka_Geomorphology_2009.pdf | 2,5 МБ | 5 февраля 2023 [chernomorets] |