气候变化领域集成服务门户(CCPortal): Supraglacial rivers on the northwest Greenland Ice Sheet, Devon Ice Cap, and Barnes Ice Cap mapped using Sentinel-2 imagery

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DOI	10.1016/j.jag.2019.01.008
	Supraglacial rivers on the northwest Greenland Ice Sheet, Devon Ice Cap, and Barnes Ice Cap mapped using Sentinel-2 imagery
	Yang K.; Smith L.C.; Sole A.; Livingstone S.J.; Cheng X.; Chen Z.; Li M.
发表日期	2019
ISSN	15698432
起始页码	1
结束页码	13
卷号	78
英文摘要	Supraglacial rivers set efficacy and time lags by which surface meltwater is routed to the englacial, subglacial, and proglacial portions of ice masses. However, these hydrologic features remain poorly studied mainly because they are too narrow (typically <30 m) to be reliably delineated in conventional moderate-resolution satellite images (e.g., 30 m Landsat-8 imagery). This study demonstrates the utility of 10 m Sentinel-2 Multi-Spectral Instrument images to map supraglacial rivers on the northwest Greenland Ice Sheet, Devon Ice Cap, and Barnes Ice Cap, covering a total area of ∼10,000 km 2 . Sentinel-2 and Landsat-8 both capture overall supraglacial drainage patterns, but Sentinel-2 images are superior to Landsat-8 images for delineating narrow and continuous supraglacial rivers. Sentinel-2 mapping across the three study areas reveals a variety of supraglacial drainage patterns. In northwest Greenland near Inglefield Land, subparallel supraglacial rivers up to 55 km long drain meltwater directly off the ice sheet onto the proglacial zone. On the Devon and the Barnes ice caps, shorter supraglacial rivers (up to 15–30 km long) are commonly interrupted by moulins, which drain internally drained catchments on the ice surface to subglacial systems. We conclude that Sentinel-2 offers strong potential for investigating supraglacial meltwater drainage patterns and improving our understanding of the hydrological conditions of ice masses globally. © 2019 Elsevier B.V.
英文关键词	Greenland Ice Sheet; Landsat-8; River remote sensing; Sentinel-2; Supraglacial River; Surface hydrology
语种	英语
scopus关键词	catchment; glacial hydrology; image analysis; Landsat; meltwater; remote sensing; satellite imagery; Sentinel; Arctic; Barnes Ice Cap; Canada; Canada; Devon Ice Cap; Greenland; Greenland Ice Sheet; Nunavut
来源期刊	International Journal of Applied Earth Observation and Geoinformation
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156486
作者单位	School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China; Joint Center for Global Change Studies, Beijing, 100875, China; Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing, 210023, China; Department of Geography, University of California, Los Angeles, CA, United States; Department of Geography, The University of Sheffield, Sheffield, S10 2TN, United Kingdom; State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China
推荐引用方式 GB/T 7714	Yang K.,Smith L.C.,Sole A.,et al. Supraglacial rivers on the northwest Greenland Ice Sheet, Devon Ice Cap, and Barnes Ice Cap mapped using Sentinel-2 imagery[J],2019,78.
APA	Yang K..,Smith L.C..,Sole A..,Livingstone S.J..,Cheng X..,...&Li M..(2019).Supraglacial rivers on the northwest Greenland Ice Sheet, Devon Ice Cap, and Barnes Ice Cap mapped using Sentinel-2 imagery.International Journal of Applied Earth Observation and Geoinformation,78.
MLA	Yang K.,et al."Supraglacial rivers on the northwest Greenland Ice Sheet, Devon Ice Cap, and Barnes Ice Cap mapped using Sentinel-2 imagery".International Journal of Applied Earth Observation and Geoinformation 78(2019).