气候变化领域集成服务门户(CCPortal): Changes in the area of genaldon glacial disaster in 2002-2010

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	Changes in the area of genaldon glacial disaster in 2002-2010
	Petrakov D.A.; Drobyshev V.N.; Aleinikov A.A.; Aristov K.A.; Tutubalina O.V.; Chernomorets S.S.
发表日期	2013
ISSN	15607496
卷号	17 期号:1
英文摘要	We have analyzed changes in the area of Genaldon glacial disaster on 20 September 2002 in the Republic of North Ossetia-Alania (Russia). Using results of annual fieldwork (2002-2010), topographic surveys in 2002, 2003, 2004 and 2009, and interpretation of satellite imagery, we have determined the rate of glacier regeneration in the Kol ka cirque and the rate of downwasting for the ice accumulated in the Karmadon depression in 2002. We register accumulation of 16 M m3 in the Kolka cirque in 2004-2009 despite unfavorable conditions for Caucasus glaciers. For mer Kolka Glacier tributaries have become separate glaciers, one of them has advanced by 500 m. It is a uni que phenomena for the Caucasus in the 21th century. In the bottom of Kolka cirque from where Kolka Glacier eva cuated during the 2002 disaster, the glacier-covered area has grown to 0.6 km3 by 2010. The volume of ice blockage in the Karmadon depression decreased by 75 % in 2002-2009, the ice-covered area decreased by over 50 %, and surface lowering reached 90 m in some sites. Taking into account the progressive deceleration of ice thawing, we suppose that ice in the depression may exist until 2020. The main current hazard for land use in the Genaldon River valley is the possible initiation of a large-scale rain- or glacier-rain debris flow in case of heavy rainfall. In the next 10-15 years we do not expect recurrence of an event similar to the glacial disaster of 20 September 2002.
英文关键词	Forecast; Glacial disaster; Glacier advance; Ice blockage degradation; Kolka Glacier; North Ossetia-Alania
学科领域	cirque; forecasting method; glacier advance; glacier dynamics; satellite imagery; thawing; Alania; Caucasus; Ossetia; Russian Federation
语种	英语
scopus关键词	cirque; forecasting method; glacier advance; glacier dynamics; satellite imagery; thawing; Alania; Caucasus; Ossetia; Russian Federation
来源期刊	Earth's Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120348
作者单位	Lomonosov Moscow State University, Faculty of Geography, Leninskie Gory, 1, Moscow, 119991, Russian Federation; Vladikavkaz Scientific Center, RAS, Government of the Republic North Ossetia-Alania, Kosta Av., 93, Vladikavkaz, 362008, Russian Federation; R and D Center ScanEx, Rossolimo Str., 5/22, b. 1, Moscow, 119021, Russian Federation
推荐引用方式 GB/T 7714	Petrakov D.A.,Drobyshev V.N.,Aleinikov A.A.,et al. Changes in the area of genaldon glacial disaster in 2002-2010[J],2013,17(1).
APA	Petrakov D.A.,Drobyshev V.N.,Aleinikov A.A.,Aristov K.A.,Tutubalina O.V.,&Chernomorets S.S..(2013).Changes in the area of genaldon glacial disaster in 2002-2010.Earth's Cryosphere,17(1).
MLA	Petrakov D.A.,et al."Changes in the area of genaldon glacial disaster in 2002-2010".Earth's Cryosphere 17.1(2013).