Geomorphologic observations and physical hypothesis on Martian gullies
Hypothesis on the presence of liquid water on the Martian surface under current climatic conditions. --- Ipotesi sulla presenza di acqua liquida sulla superficie di Marte alle attuali condizioni climatiche. We propose a hypothesis to explain the erosive phenomenon of Martian gullies under current cl...
| Published in: | Italian Journal of Geosciences |
|---|---|
| Main Authors: | , |
| Other Authors: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
SGI
2022
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/2122/15669 https://www.italianjournalofgeosciences.it/297/article-1125/geomorphologic-observations-and-physical-hypothesis-on-martian-gullies.html https://www.italianjournalofgeosciences.it/modal_download.php?w=ft&ida=1125 https://doi.org/10.3301/IJG.2022.12 |
| Summary: | Hypothesis on the presence of liquid water on the Martian surface under current climatic conditions. --- Ipotesi sulla presenza di acqua liquida sulla superficie di Marte alle attuali condizioni climatiche. We propose a hypothesis to explain the erosive phenomenon of Martian gullies under current climatic conditions. This model is consistent with the morphology and finds support in the characteristic geographic diffusion of the gullies, which seem to avoid exposure to the sun and the hottest latitudes. We hypothesize a transient flow of spring water fed by melting permafrost which can occur only in certain latitudes and altitudes, with seasonal variability and for a very short time. Furthermore, this phenomenon can only occur in certain ranges of temperature and pressure, therefore when particular and sporadic weather conditions allow it. For this reason, we propose to call it weather-springing water (WSW). Published 245-258 7A. Geofisica per il monitoraggio ambientale JCR Journal |
|---|