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Volcanic skyscapes
Explosive volcanic eruptions are some of the most visually impressive natural phe-nomena, and are frequently represented in visual media such as films or games, usually with a bespoke, one-off solution. Existing plume models treat the atmo-sphere as a static boundary, while existing atmosphere model...
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| Format: | Thesis |
| Language: | English English |
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Department of Computer Science
2025
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| _version_ | 1867613244594585600 |
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| access_status_str | Open Access |
| author | Pretorius, Pieter Cilliers |
| author2 | Gain, James |
| author_browse | Gain, James Pretorius, Pieter Cilliers |
| author_facet | Gain, James Pretorius, Pieter Cilliers |
| author_sort | Pretorius, Pieter Cilliers |
| collection | Thesis |
| description | Explosive volcanic eruptions are some of the most visually impressive natural phe-nomena, and are frequently represented in visual media such as films or games, usually with a bespoke, one-off solution. Existing plume models treat the atmo-sphere as a static boundary, while existing atmosphere models are not designed for the extremes present in a plume. We present the first general-purpose model with bi-directional interaction between a volcano plume and the atmosphere. The atmo-sphere is modelled as sparse layers of 2D Eulerian grids, while the plume dynamics are modelled with Lagrangian disks and spheres. We enable the transfer of physi-cal quantities such as ash, moisture, temperature, and wind velocity between these submodels. Volumetric animations are generated through procedural upsampling using noise functions, specifically tuned to the physical processes in play, to create a complete volcanic skyscape. Our model depicts most of the relevant facets arising from plume and atmosphere interactions, such as ash rain, embedded bell, cap, and skirt clouds, shockwave effects, and volcanic lightning. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/42003 |
| institution | University of Cape Town (South Africa) |
| language | English eng |
| last_indexed | 2026-06-10T12:33:04.194Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Department of Computer Science |
| publisherStr | Department of Computer Science |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/42003 Volcanic skyscapes Pretorius, Pieter Cilliers Gain, James Masters Explosive volcanic eruptions are some of the most visually impressive natural phe-nomena, and are frequently represented in visual media such as films or games, usually with a bespoke, one-off solution. Existing plume models treat the atmo-sphere as a static boundary, while existing atmosphere models are not designed for the extremes present in a plume. We present the first general-purpose model with bi-directional interaction between a volcano plume and the atmosphere. The atmo-sphere is modelled as sparse layers of 2D Eulerian grids, while the plume dynamics are modelled with Lagrangian disks and spheres. We enable the transfer of physi-cal quantities such as ash, moisture, temperature, and wind velocity between these submodels. Volumetric animations are generated through procedural upsampling using noise functions, specifically tuned to the physical processes in play, to create a complete volcanic skyscape. Our model depicts most of the relevant facets arising from plume and atmosphere interactions, such as ash rain, embedded bell, cap, and skirt clouds, shockwave effects, and volcanic lightning. 2025-10-13T13:49:51Z 2025-10-13T13:49:51Z 2025 2025-10-13T13:47:12Z Thesis / Dissertation Masters MSc http://hdl.handle.net/11427/42003 en eng application/pdf Department of Computer Science Faculty of Science Universiy of Cape Town |
| spellingShingle | Masters Pretorius, Pieter Cilliers Volcanic skyscapes |
| thesis_degree_str | Master's |
| title | Volcanic skyscapes |
| title_full | Volcanic skyscapes |
| title_fullStr | Volcanic skyscapes |
| title_full_unstemmed | Volcanic skyscapes |
| title_short | Volcanic skyscapes |
| title_sort | volcanic skyscapes |
| topic | Masters |
| url | http://hdl.handle.net/11427/42003 |
| work_keys_str_mv | AT pretoriuspietercilliers volcanicskyscapes |