干旱区生态环境知识资源中心(Arid): Glacier decline in the Central Andes (33 degrees S): Context and magnitude from satellite and historical data

Arid

DOI	10.1016/j.jsames.2019.102249
	Glacier decline in the Central Andes (33 degrees S): Context and magnitude from satellite and historical data
	Ruiz Pereira, Sebastian Felipe 1,2; Veettil, Bijeesh Kozhikkodan 3,4
通讯作者	Veettil, Bijeesh Kozhikkodan
来源期刊	JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
ISSN	0895-9811
出版年	2019
卷号	94
英文摘要	Central Andes (33 degrees S) represent a water-scarce region. During arid years, glacier runoff may constitute the main hydrological input at warm season and hence a steadfast deglacierization may represent a decrease in the regional water-budget. Ice-retreat enables landscape transitions from proglacial towards a paraglacial environment, allowing the formation of newly formed cryogenic deposits. Ice-surface changes in the Central Andes (33 S), including the high-mountain areas from Aconcagua, Mendoza and Maipo basins (Argentina and Chile), were studied using digitalized maps, aerial photographs, Landsat (1-8) and Sentinel-2A data for the period between 1956 and 2015. Band ratio and Normalized Difference Snow Index (NDSI) methods were tested using Landsat 8 and Sentinel-2A data for comparison. Geomorphological changes were assessed at Monos de Agua catchment (2750-4000 m a.s.l.) in the Aconcagua basin (Chile) as a regionally representative landscape transition case. Regional glacier shrinkage of 46 +/- 5% between 1956 and 2016 was observed for the Central Andean sub-basins in both Argentina and Chile at 33 degrees S. Overall, 107.1 +/- 5 km(2) of newly exposed surfaces are subject to permafrost conditions. Such insights raise concern in terms of current and future environmental assessments for newly formed cryospheric elements in water scarce regions.
英文关键词	Central Andes Mountain cryosphere Historical maps Sentinel-2 Deglacierization
类型	Article
语种	英语
国家	Chile ; Vietnam
收录类别	SCI-E
WOS记录号	WOS:000479022300029
WOS关键词	EQUILIBRIUM-LINE ALTITUDE ; CENTRAL CHILE ; CORDILLERA BLANCA ; TROPICAL ANDES ; ROCK GLACIERS ; INVENTORY ; PERU ; PRECIPITATION ; HYDROCLIMATE ; COMPILATION
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217338
作者单位	1.Pontificia Univ Catolica Chile, Inst Geog, Santiago, Chile; 2.Univ Chile, Ctr Climate & Resilience Res CR2, Santiago, Chile; 3.Ton Duc Thang Univ, Dept Management Sci & Technol Dev, Ho Chi Minh City, Vietnam; 4.Ton Duc Thang Univ, Fac Environm & Labour Safety, Ho Chi Minh City, Vietnam
推荐引用方式 GB/T 7714	Ruiz Pereira, Sebastian Felipe,Veettil, Bijeesh Kozhikkodan. Glacier decline in the Central Andes (33 degrees S): Context and magnitude from satellite and historical data[J],2019,94.
APA	Ruiz Pereira, Sebastian Felipe,&Veettil, Bijeesh Kozhikkodan.(2019).Glacier decline in the Central Andes (33 degrees S): Context and magnitude from satellite and historical data.JOURNAL OF SOUTH AMERICAN EARTH SCIENCES,94.
MLA	Ruiz Pereira, Sebastian Felipe,et al."Glacier decline in the Central Andes (33 degrees S): Context and magnitude from satellite and historical data".JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 94(2019).