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Строение и динамика выводного ледника Лендж, ледниковый купол острова Кинг-Джордж, Южные Шетландские острова, Антарктидастатья
- Авторы: Мачерет Ю.Я., Москалевский М.Ю.
- Журнал: Материалы гляциологических исследований
- Том: 86
- Год издания: 1999
- Первая страница: 61
- Последняя страница: 66
- Аннотация: The results of ground-based radio-echo sounding obtained in 1995/96 and 1996/97 on the outlet Lange Glaciers draining the southern part of largest ice dome B on King George Island ice cap (South Shetland Islands), Antarctica, as well as the analysis of an aerial photograph and satellite image taken from 1956 and 1991 are presented. As a result, maps of ice thickness and subglacial relief of the upeer part of this glacier were constructed. The maximum ice thickness (308 m) was measured in the vicinity of the main ice divide. These maps showed the close relationship between surface and subglacial relief and main directions of ice flow. The data obtained made it possible to estimate ice discharge through meashured cross-section, and to choose a suitable place for deep ice core drilling. Ice front of Lange Glacier retreated by 1 km during the last 35 years, while climate warming was up to 1,8°C in the western sector of Antarctica, and the northern margin of ice dome was stable. We consider the outlet Lange Glacier as the most sensitive, dynamicly active element of the ice cap. It is suitable ice mass for estimation of glacier response to climate warming and further for satellite monitoring.
- Добавил в систему: Мачерет Юрий Яковлевич