M. E. Elwood Madden, S. M. Ulrich
Recent observations of CH4 in the Martian atmosphere suggest that CH4 has been added relatively recently, spurring various hypotheses regarding its source. This study was conducted to investigate the role of salinity on gas hydrate stability in the Martian subsurface. Specifically, the objective was to examine how increasing salinity affects the predicted hydrate stability zones for CH4 and CO2 in the presence of high salinity brines. The methodology involved comparative analysis of the Martian geothermal gradient with hydrate stability fields while accounting for salinity variations. Results indicated that increasing salinity alone significantly decreases the predicted stability of CH4 hydrates within the Martian subsurface, suggesting that salinity-driven dissociation of hydrates may contribute to the destabilization of CH4. Moreover, the findings imply that active thermal and pressure fluctuations are not a prerequisite for the release of atmospheric CH4 from hydrates. This work adds to the understanding of gas hydrate dynamics on Mars and the potential mechanisms for recent methane release.
@article{a67627b6-b7e2-41b3-b545-ba074e9c45d9,
title={Salinity induced hydrate dissociation A},
author={M. E. Elwood Madden and S. M. Ulrich},
year={2026},
language={en}
}TY - JOUR TI - Salinity induced hydrate dissociation A AU - M. E. Elwood Madden AU - S. M. Ulrich PY - 2026 LA - en ER -
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