Advective Fluxes in the Martian Regolith as a Mechanism Driving Methane and Other Trace Gas Emissions to the Atmosphere
Regolith emissions are driven by diffusion and/or advection, depending on the scenario. Advective fluxes influence methane and CO2 soil emissions into the atmosphere on Earth and may drive trace gas emissions in the Mars atmosphere. However, their relevance in the Martian regolith has not been evalu...
| Autores: | , , , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2020 |
| País: | España |
| Recursos: | Instituto Nacional de Técnica Aeroespacial (INTA) |
| Repositorio: | DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial |
| OAI Identifier: | oai:digital.inta.es:20.500.12666/151 |
| Acesso em linha: | https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019GL085694 http://hdl.handle.net/20.500.12666/151 |
| Access Level: | acceso abierto |
| Palavra-chave: | Gale Crater Contaminant Transport Thermal Tides Porous Media Gas emissions Atmosphere |
| Resumo: | Regolith emissions are driven by diffusion and/or advection, depending on the scenario. Advective fluxes influence methane and CO2 soil emissions into the atmosphere on Earth and may drive trace gas emissions in the Mars atmosphere. However, their relevance in the Martian regolith has not been evaluated to date. Our regolith transport simulations show that advective fluxes produced by winds and atmospheric pressure fluctuations can be relevant under Martian conditions and may drive the methane abundance detected by Mars Science Laboratory. Trace gases such as methane should be emitted or produced from the first layers of regolith, or quickly transported to this region from a deeper reservoir through fractured media. |
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