The influence of marine ice on ice shelf dynamics and stability ...
To predict the future behaviour of the Antarctic Ice Sheet, it is vital to have a sound understanding of ice rheology, which governs how ice deforms in response to stress. The rheology of laboratory-made pure water ice (‘standard ice’) has been the focus of many previous studies, and is relatively w...
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| Format: | Thesis |
| Language: | unknown |
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University of Tasmania
2024
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| Online Access: | https://dx.doi.org/10.25959/25209671.v1 https://figshare.utas.edu.au/articles/thesis/The_influence_of_marine_ice_on_ice_shelf_dynamics_and_stability/25209671/1 |
| Summary: | To predict the future behaviour of the Antarctic Ice Sheet, it is vital to have a sound understanding of ice rheology, which governs how ice deforms in response to stress. The rheology of laboratory-made pure water ice (‘standard ice’) has been the focus of many previous studies, and is relatively well constrained. However, ice in nature differs from standard ice in its chemical content and microstructural characteristics, which can substantially alter its rheology in ways which are not well understood. In this thesis, I investigate the rheological properties of marine and meteoric ice from the Amery Ice Shelf, Antarctica, comparing them with standard ice. Then, I incorporate these findings into a numerical model of an ice shelf, to understand how differences in ice properties, particularly in marine ice, can influence predictions of future ice shelf dynamics. In the first chapter of this thesis, I perform a systematic study to test the viability of a new laboratory technique to substantially reduce the time ... |
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