Chaotic variability in a model of coupled ice streams
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866908592813113344 |
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| author | Kypke, Kolja Ashwin, Peter Ditlevsen, Peter |
| author_facet | Kypke, Kolja Ashwin, Peter Ditlevsen, Peter |
| contents | Regions of fast-flowing ice in ice sheets, known as ice streams, have been theorized to be able to exhibit build-up/surge oscillatory variability due to thermomechanical coupling at the base of the ice. A simple model of three coupled ice streams is constructed to replicate the spatial configuration of a single ice stream being bisected into two termini. The model is constructed to mimic existing branching ice streams in northern Greenland. This model is shown to exhibit both steady-flow and build-up/surge oscillations. Further, the variability can be chaotic due to the nonlinear coupling of three incommensurate frequencies. This provides a mode of chaotic internal variability for ice sheets that contain these types of ice streams. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_12525 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chaotic variability in a model of coupled ice streams Kypke, Kolja Ashwin, Peter Ditlevsen, Peter Chaotic Dynamics Geophysics Regions of fast-flowing ice in ice sheets, known as ice streams, have been theorized to be able to exhibit build-up/surge oscillatory variability due to thermomechanical coupling at the base of the ice. A simple model of three coupled ice streams is constructed to replicate the spatial configuration of a single ice stream being bisected into two termini. The model is constructed to mimic existing branching ice streams in northern Greenland. This model is shown to exhibit both steady-flow and build-up/surge oscillations. Further, the variability can be chaotic due to the nonlinear coupling of three incommensurate frequencies. This provides a mode of chaotic internal variability for ice sheets that contain these types of ice streams. |
| title | Chaotic variability in a model of coupled ice streams |
| topic | Chaotic Dynamics Geophysics |
| url | https://arxiv.org/abs/2510.12525 |