气候变化领域集成服务门户(CCPortal): Using SAR satellite data time series for regional glacier mapping

CCPortal

DOI	10.5194/tc-12-867-2018
	Using SAR satellite data time series for regional glacier mapping
	Winsvold S.H.; Kääb A.; Nuth C.; Andreassen L.M.; Van Pelt W.J.J.; Schellenberger T.
发表日期	2018
ISSN	19940416
卷号	12 期号:3
英文摘要	With dense SAR satellite data time series it is possible to map surface and subsurface glacier properties that vary in time. On Sentinel-1A and RADARSAT-2 backscatter time series images over mainland Norway and Svalbard, we outline how to map glaciers using descriptive methods. We present five application scenarios. The first shows potential for tracking transient snow lines with SAR backscatter time series and correlates with both optical satellite images (Sentinel-2A and Landsat 8) and equilibrium line altitudes derived from in situ surface mass balance data. In the second application scenario, time series representation of glacier facies corresponding to SAR glacier zones shows potential for a more accurate delineation of the zones and how they change in time. The third application scenario investigates the firn evolution using dense SAR backscatter time series together with a coupled energy balance and multilayer firn model. We find strong correlation between backscatter signals with both the modeled firn air content and modeled wetness in the firn. In the fourth application scenario, we highlight how winter rain events can be detected in SAR time series, revealing important information about the area extent of internal accumulation. In the last application scenario, averaged summer SAR images were found to have potential in assisting the process of mapping glaciers outlines, especially in the presence of seasonal snow. Altogether we present examples of how to map glaciers and to further understand glaciological processes using the existing and future massive amount of multi-sensor time series data. © Author(s) 2018.
学科领域	backscatter; energy balance; equilibrium line; glacier; Landsat; mapping; numerical model; RADARSAT; satellite data; satellite imagery; Sentinel; synthetic aperture radar; time series; Arctic; Norway; Svalbard; Svalbard and Jan Mayen
语种	英语
scopus关键词	backscatter; energy balance; equilibrium line; glacier; Landsat; mapping; numerical model; RADARSAT; satellite data; satellite imagery; Sentinel; synthetic aperture radar; time series; Arctic; Norway; Svalbard; Svalbard and Jan Mayen
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119203
作者单位	Department of Geosciences, University of Oslo, P.O. Box 1047, Blindern, Oslo, 0316, Norway; Section for Glaciers Ice and Snow, Hydrology Department, Norwegian Water Resources and Energy Directorate, P.O. Box 5091, Majorstua, Oslo, 0301, Norway; Department of Earth Sciences, Uppsala University, Villav. 16, Uppsala, 752 36, Sweden
推荐引用方式 GB/T 7714	Winsvold S.H.,Kääb A.,Nuth C.,et al. Using SAR satellite data time series for regional glacier mapping[J],2018,12(3).
APA	Winsvold S.H.,Kääb A.,Nuth C.,Andreassen L.M.,Van Pelt W.J.J.,&Schellenberger T..(2018).Using SAR satellite data time series for regional glacier mapping.Cryosphere,12(3).
MLA	Winsvold S.H.,et al."Using SAR satellite data time series for regional glacier mapping".Cryosphere 12.3(2018).