Landslide on glaciers: an example from Western Alps (Cogne-Italy)

doi:10.1007/s11056-020-09811-4

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2020 > Vol17 No.5

	Landslide on glaciers: an example from Western Alps (Cogne-Italy)
	Frasca, Marco; Vacha, Damiano; Chicco, Jessica; Troilo, Fabrizio; Bertolo, Davide
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2020
卷号	17 期号:5 页码:DOI: 10.1007/s11056-020-09811-4
关键词	Landslide Glacier Remote sensing Climate changes Western Italian Alps
ISSN号	1672-6316
DOI	10.1007/s11056-020-09811-4
文献子类	Article
英文摘要	In the warm summer of 2017, a landslide failed from the south-east side of the Col des Clochettes on the top of the underlying Trajo Glacier. The study area is at an elevation of about 3500 m a.s.l. in the Gran Paradiso Massif and can be hardly reached by walking from Cogne (Aosta Valley, NW Italy). Studies conducted by field surveys, photogrammetry (structure from motion) and satellite images analysis, integrated with the evaluation of data from meteorological stations have been used to reconstruct the phenomenon and infer its causes. The site is very complex to be studied especially due to logistic problems, therefore, measurements and observations that are common practice in other landslides are very difficult to apply here. So, many of the results achieved are not adequately supported by field studies. Anyway, the following factors could have affected the stability of the slope: i) the tectonic structure of the area, which is reflected on the morphology and on the geomechanics characteristics of the rock masses; ii) the meteorological conditions during 3 months before the main failure, resulting in an extremely high temperature compared to historical data. Moreover, the analysis of multitemporal satellite images allowed to recognize that it was not a single landslide but that the phenomenon is articulated over time in at least five failures in about 2 months. Moreover, several predisposing factors may have been playing an important role in causing the instability: the degradation of permafrost (probably affecting rock mass due to the circulation of warm air and water in the discontinuity systems), the alternance of the freeze-thaw cycles and the availability of a considerable amount of water from rainfalls and nival fusion infiltrating deeply in the rock mass. More common causes such as rains and earthquakes have been excluded.
电子版国际标准刊号	1573-5095
语种	英语
WOS记录号	WOS:000577041900001
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46822]
专题	Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.5
推荐引用方式 GB/T 7714	Frasca, Marco,Vacha, Damiano,Chicco, Jessica,et al. Landslide on glaciers: an example from Western Alps (Cogne-Italy)[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(5):DOI: 10.1007/s11056-020-09811-4.
APA	Frasca, Marco,Vacha, Damiano,Chicco, Jessica,Troilo, Fabrizio,&Bertolo, Davide.(2020).Landslide on glaciers: an example from Western Alps (Cogne-Italy).JOURNAL OF MOUNTAIN SCIENCE,17(5),DOI: 10.1007/s11056-020-09811-4.
MLA	Frasca, Marco,et al."Landslide on glaciers: an example from Western Alps (Cogne-Italy)".JOURNAL OF MOUNTAIN SCIENCE 17.5(2020):DOI: 10.1007/s11056-020-09811-4.