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The role of subglacial hydrology in Antarctic ice sheet dynamics and stability: a modelling perspective
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The role of subglacial hydrology in Antarctic ice sheet dynamics and stability: a modelling perspective
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Journal Article
The role of subglacial hydrology in Antarctic ice sheet dynamics and stability: a modelling perspective
2022
Overview
Subglacial hydrology is an important component of the ice dynamic system in Antarctica but is challenging to investigate due to the large spatial scales of the catchment systems, the ice thickness, and remote location. Here I discuss key discoveries about Antarctic subglacial hydrology from the Glacier Drainage System (GlaDS) model, including the presence of long, often high-pressure, subglacial channels. These channels pump tens of cubic metres per second of freshwater into ice-shelf cavities and directly affect melt rates at the critical grounding zone regions. Future ice dynamics and ice-shelf cavity models should take subglacial hydrology into account if they are to accurately predict future behaviour of the Antarctic Ice Sheet.
