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Degradation of cryospheric objects in the Lavrentia Bay vicinity, Eastern Chukotka, Russia
Ananicheva Mariya Dmitrievna

PhD in Geography

Senior Research Fellow at the Institute of Geography of the Russian Academy of Sciences 

119017, Russia, Moscow, ul. Staromonetnyi Pereulok, 29

ananicheva@igras.ru
Maslakov Alexey

PhD in Geography

Research fellow at the Geographical Faculty of Lomonosov Moscow State University

119991, Russia, g. Moscow, ul. Leninskie Gory, 1

alekseymaslakov@yandex.ru
Другие публикации этого автора
 

 
Antonov Evgeny Viktorovich

PhD in Geography

Junior Research Fellow at the Institute of Geography of the Russian Academy of Sciences 

119017, Russia, Moscow, ul. Staromonetnyi Pereulok, 29

antonovmtg@inbox.ru

Abstract.

The article contains the results of field investigations of cryospheric objects – land-based glaciers and permafrost rocks in the area of the Lavrenty Bay, Eastern Chukotka. Glaciers of the Laurentian group were described in the mid-1970s by Rudolf Sedov, later they were studied with the help of space imagery by one of the authors. Since glaciers are of small size, and satellite images can give errors in this case, it was necessary to check in situ their condition. Field studies have made it possible to ascertain the severe degradation of small glaciers of the Chukchi Highlands. Also field studies of the permafrost seasonal thawing, carried out by the authors in the season of 2017, revealed that the difference in thickness of the seasonally thawed layer in the study area at the end of August was, in comparison with the previous year, -0.5 .. + 4.3 cm, depending on local natural conditions. 

Keywords: Eastern Chukotka, permafrost, climate change, rock glacier, active layer, glacier, Chukchi Highland, Chukotka, glaciology, geocryology

DOI:

10.7256/2453-8922.2017.3.24204

Article was received:

17-09-2017


Review date:

17-09-2017


Publish date:

30-10-2017


This article written in Russian. You can find full text of article in Russian here .

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