Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL085192 |
Sentinel-1 Detects Firn Aquifers in the Greenland Ice Sheet | |
Brangers, I1; Lievens, H.1,2; Miege, C.3; Demuzere, M.1,2,4; Brucker, L.5,6; De Lannoy, G. J. M.1 | |
2020-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Belgium; USA; Germany |
英文摘要 | Firn aquifers in Greenland store liquid water within the upper ice sheet and impact the hydrological system. Their location and area have been estimated with airborne radar sounder surveys (Operation IceBridge, OIB). However, the OIB coverage is limited to narrow flight lines, offering an incomplete view. Here, we show the ability of satellite radar measurements from Sentinel-1 to map firn aquifers across all of Greenland at 1 km(2) resolution. The detection of aquifers relies on a delay in the freezing of meltwater within the firn above the water table, causing a distinctive pattern in the radar backscatter. The Sentinel-1 aquifer locations are in very good agreement with those detected along the OIB flight lines (Cohen's kappa = 0.84). The total aquifer area is estimated at 54,800 km(2). With continuity of Sentinel-1 ensured until 2030, our study lays a foundation for monitoring the future response of firn aquifers to climate change. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529107400014 |
WOS关键词 | MELTWATER STORAGE ; SURFACE-PROPERTIES ; RADAR ; SCATTEROMETER ; SNOW |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279633 |
专题 | 气候变化 |
作者单位 | 1.Katholieke Univ Leuven, Dept Earth & Environm Sci, Heverlee, Belgium; 2.Univ Ghent, Dept Environm, Ghent, Belgium; 3.Rutgers State Univ, Dept Geog, New Brunswick, NJ USA; 4.Ruhr Univ Bochum, Dept Geog, Bochum, Germany; 5.NASA, Goddard Space Flight Ctr, Cryospher Sci Lab, Greenbelt, MD USA; 6.Univ Space Res Assoc, GESTAR, Columbia, MD USA |
推荐引用方式 GB/T 7714 | Brangers, I,Lievens, H.,Miege, C.,et al. Sentinel-1 Detects Firn Aquifers in the Greenland Ice Sheet[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(3). |
APA | Brangers, I,Lievens, H.,Miege, C.,Demuzere, M.,Brucker, L.,&De Lannoy, G. J. M..(2020).Sentinel-1 Detects Firn Aquifers in the Greenland Ice Sheet.GEOPHYSICAL RESEARCH LETTERS,47(3). |
MLA | Brangers, I,et al."Sentinel-1 Detects Firn Aquifers in the Greenland Ice Sheet".GEOPHYSICAL RESEARCH LETTERS 47.3(2020). |
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