Cesar, Camila (2023). Seasonal interactions in the south polar area of Mars - From orbital and experimental observations. (Thesis). Universität Bern, Bern
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Abstract
The Polar areas of Mars are home to exotic seasonal processes with no terrestrial counterparts. Seasonal features such as spots, fans and spiders have been hypothesised, first by Kieffer, to originate from eruption of gas and dust as the seasonal CO2 layer sublimate. Over the years, observations and computational models have provided sufficient support to this hypothesis, which is today commonly accepted. With the arrival of the Colour and Stereo Surface Imaging System (CaSSIS) onboard ExoMars TGO, high-resolution images, with exceptional colour coverage in four filters, provided new insights on the seasonal features observed in the south polar area of Mars. A variety of new morphologies of spots were identified and led to the definition of an extended classification. I established a putative evolution model based on the Kieffer model and the orbital observations from CaSSIS. To complement the orbital data and better understand parts of the model, I led experimental campaigns in the goal of answering some open questions regarding these seasonal phenomena, their origins and evolution over time. I present in this thesis my contributions to the understanding of the circum-polar processes.
| Item Type: | Thesis |
|---|---|
| Dissertation Type: | Single |
| Date of Defense: | 18 January 2023 |
| Subjects: | 500 Science > 520 Astronomy 500 Science > 530 Physics 600 Technology > 620 Engineering |
| Institute / Center: | 08 Faculty of Science > Physics Institute |
| Depositing User: | Hammer Igor |
| Date Deposited: | 15 Jul 2025 16:14 |
| Last Modified: | 15 Jul 2025 22:25 |
| URI: | https://boristheses.unibe.ch/id/eprint/6379 |
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