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THE REVIVAL AND ADVANCES OF GLACIERS DURING THE WARMING PERIODтезисы доклада
- Авторы: Kotlyakov V.M., Muraviev A.Y., Nosenko G.A., Rototaeva O.V., Khromova T.Y., Chernova L.P.
- Сборник: Practical Geography and XXI Century Challenges. International Geographical Union Thematic Conference dedicated to the Centennial of the Institute of Geography of the Russian Academy of Sciences, 4–6 June 2018, Moscow. Conference Book
- Редакторы: Иванов Сергей Владимирович, Себенцов Александр Борисович, Суслова Светлана Борисовна
- Том: 1
- Тезисы
- Год издания: 2018
- Издательство: Федеральное государственное бюджетное учреждение науки Институт географии Российской академии наук
- Местоположение издательства: Москва
- Первая страница: 73
- Последняя страница: 74
- DOI: 10.15356/IGRAS100CONF_V1
- Аннотация: The modern epoch, defined as global warming, is accompanied by almost universal retreat of mountain glaciers. However, with detailed consideration it turns out that the retreat of glaciers in particular regions is not equal at different rates, and sometimes accompanied by the advance of individual glaciers. The causes of such advances can be very different: from the peculiarities of the occurrence of specific glaciers in the surrounding terrain, which causes the peculiarity of their feed and existence, to the dominance of special climatic conditions in a particular territory. The report considers two such special cases: the revival of the removed out surging glacier and the impact on the glaciers of some natural processes in areas of active volcanism. On the northern slope of the Central Caucasus, on the slope of Mount Kazbek there is the widely known surging glacier Kolka. The previous surges of this glacier took place in the middle of the XIX century, in 1902, 1969/1970 and 2002. The last surge was particularly grandiose: almost the entire glacier "left" from its circus, and huge masses of ice were carried down the valley by a powerful ice-rock mudflow. However, in subsequent years, distinguished by weather conditions that did not at all contribute to the existence of glaciers, the glacier began to revive, and over the past decade or more its mass has been steadily increasing, even in the conditions of a reduction in surrounding glaciers. Thus, even in the era of global warming and the widespread retreat of glaciers, the suddenly destroyed glacier tends to regain its dimensions. Another vivid example of the advance of glaciers in conditions of general warming is the areas of active volcanism in Kamchatka. Thus, the area of glaciers of the Klyuchevskaya group of volcanoes increased from 1950 to 2010-2015 by 4.3%, while the glaciation of Kamchatka as a whole decreased by 10.6%. The cause of the advance of individual glaciers are active volcanoes, which supply volcanic material to the surface of glaciers that contribute to the preservation of ice, and have a seismic effect on them that facilitates the movement of ice. Since 1945, the Herman Glacier, the largest mountain glacier in Russia, has almost continuously advanced. 74 The studied examples show that in the modern era of global warming, natural processes are not so unambiguous, and to predict a sharp general reduction in terrestrial glaciation of the Earth in the future is a big mistake. Acknowledgements. This paper includes the results of research projects № 0148-2014- 0007 of the Research Plan of the Institute of Geography, RAS and № 05/2017/РГО-РФФИ, Russian Geographical Society.
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