Locations, outlines and ICESat-2 tracks of active lakes at the onset of the Jutulstraumen Glacier (Antarctica)

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...

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Bibliographic Details
Main Authors: Neckel, Niklas, Franke, Steven, Helm, Veit
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
AC
Aircraft
Antarctica
AWI UWB
DInSAR
Dronning Maud Land
ICESat-2
JuRaS
CHIRP
Jutulstraumen
Jutulstraumen_Glacier
MULT
Multiple investigations
P6_215_UWB_2018_1812220301
P6_215_UWB_2018_1812240401
P6_215_UWB_2018_1812260501
P6_215_UWB_2018_1812260602
P6_215_UWB_2018_1812270701
P6_215_UWB_2018_1812270802
P6-215_UWB_2018
POLAR 6
Sentinel-1
subglacial hydrology
subglacial lakes
Jutulstraumen Glacier
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.927120
https://doi.org/10.1594/PANGAEA.927120
Description
Summary: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.

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