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| Hauptverfasser: | , , |
|---|---|
| Format: | Dataset Open Access |
| Sprache: | en |
| Veröffentlicht: |
PANGAEA
2021
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| Schlagworte: | |
| Online-Zugang: | https://doi.org/10.1594/PANGAEA.927120 |
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Inhaltsangabe:
- We analysed a 6 year time series of displacement maps from Sentinel-1 SAR interferometry in the upstream region of Dronning Maud Lands Jutulstraumen Glacier (Antarctica). Our results reveal short-term cascade-like events of subsidence and uplift of the ice surface, which we interpret as drainage and filling of subglacial water pockets. This indicates a periodic transport of subglacial water through an interconnected drainage system. The water re-location events in this study are located in a slow flowing region 225~km upstream of the grounding line. An examination of high-resolution ultra-wideband radar data and the hydropotential gradient reveals that subglacial water is moving downstream along a canyon-like system of local valleys.