Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094472 |
Evidence of cascading subglacial water flow at Jutulstraumen Glacier (Antarctica) derived from Sentinel-1 and ICESat-2 measurements | |
Niklas Neckel; Steven Franke; Veit Helm; Reinhard Drews; Daniela Jansen | |
2021-10-07 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Migration of subglacial water underneath thick Antarctic ice is difficult to observe directly, but is known to influence ice flow dynamics. Here we analyse a six-year time series of displacement maps from differential Sentinel-1 SAR interferometry (DInSAR) in the upstream region of Jutulstraumen Glacier. Our results reveal short-term (between 12 days and one year) interconnected subsidence- and uplift events of the ice surface, which we interpret as a pressure response to the drainage and filling of subglacial lakes. This indicates an episodic cascade-like water transport with longer quiescent phases in a dynamically stable glacial setting. Abrupt events appear in the DInSAR time series and are confirmed by ICESat-2 altimetry. The events can be traced for a one-year period along a 175 km flow path. We are able to observe the migration of subglacial water with unprecedented spatial and temporal resolution, providing a new observational baseline to further develop subglacial hydrological models. |
领域 | 气候变化 |
URL | 查看原文 |
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/339936 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Niklas Neckel,Steven Franke,Veit Helm,et al. Evidence of cascading subglacial water flow at Jutulstraumen Glacier (Antarctica) derived from Sentinel-1 and ICESat-2 measurements[J]. Geophysical Research Letters,2021. |
APA | Niklas Neckel,Steven Franke,Veit Helm,Reinhard Drews,&Daniela Jansen.(2021).Evidence of cascading subglacial water flow at Jutulstraumen Glacier (Antarctica) derived from Sentinel-1 and ICESat-2 measurements.Geophysical Research Letters. |
MLA | Niklas Neckel,et al."Evidence of cascading subglacial water flow at Jutulstraumen Glacier (Antarctica) derived from Sentinel-1 and ICESat-2 measurements".Geophysical Research Letters (2021). |
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