DOI: 10.5194/tc-12-867-2018
Scopus记录号: 2-s2.0-85043524543
论文题名: Using SAR satellite data time series for regional glacier mapping
作者: Winsvold S ; H ; , Kääb A ; , Nuth C ; , Andreassen L ; M ; , Van Pelt W ; J ; J ; , Schellenberger T
刊名: Cryosphere
ISSN: 19940416
出版年: 2018
卷: 12, 期: 3 起始页码: 867
结束页码: 890
语种: 英语
英文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75403
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Geosciences, University of Oslo, P.O. Box 1047, Blindern, Oslo, Norway; Section for Glaciers Ice and Snow, Hydrology Department, Norwegian Water Resources and Energy Directorate, P.O. Box 5091, Majorstua, Oslo, Norway; Department of Earth Sciences, Uppsala University, Villav. 16, Uppsala, Sweden
Recommended Citation:
Winsvold S,H,, Kääb A,et al. Using SAR satellite data time series for regional glacier mapping[J]. Cryosphere,2018-01-01,12(3)