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Ruedas, T. and Breuer, D. (2017) On the relative importance of thermal and chemical buoyancy in impact-induced melting on Mars. 48th Lunar and Planetary Science Conference, 20-24 Mar 2017, The Woodlands, TX, USA.
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Official URL: http://www.hou.usra.edu/meetings/lpsc2017/pdf/1913.pdf
Abstract
Convection in planetary mantles is driven by buoyancy that results from density variations, which may have thermal or compositional causes. We study the relative importance of the thermal and compositional contributions to the buoyancy of melt-induced density heterogeneities in Mars by coupling two-dimensional, fully dynamical convection models with a detailed model of the mineralogy and material properties of martian peridotite. The main focus lies on the anomalies created by giant impacts, which lead to particularly intense, high-degree melting that may reach deeper than the regular global asthenospheric melting zone. We investigate the differences in the evolutions of models with only thermal and with both thermal and compositional buoyancy for impacts of different sizes; the compositional aspect has been neglected in most previous studies.
| Item URL in elib: | https://elib.dlr.de/111194/ | |||||||||
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| Document Type: | Conference or Workshop Item (Poster) | |||||||||
| Title: | On the relative importance of thermal and chemical buoyancy in impact-induced melting on Mars | |||||||||
| Authors: |
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| Date: | March 2017 | |||||||||
| Refereed publication: | No | |||||||||
| Open Access: | Yes | |||||||||
| Gold Open Access: | No | |||||||||
| In SCOPUS: | No | |||||||||
| In ISI Web of Science: | No | |||||||||
| Status: | Published | |||||||||
| Keywords: | Impacts, Mars, Mantle convection | |||||||||
| Event Title: | 48th Lunar and Planetary Science Conference | |||||||||
| Event Location: | The Woodlands, TX, USA | |||||||||
| Event Type: | international Conference | |||||||||
| Event Dates: | 20-24 Mar 2017 | |||||||||
| HGF - Research field: | Aeronautics, Space and Transport | |||||||||
| HGF - Program: | Space | |||||||||
| HGF - Program Themes: | Space Science and Exploration | |||||||||
| DLR - Research area: | Raumfahrt | |||||||||
| DLR - Program: | R EW - Erforschung des Weltraums | |||||||||
| DLR - Research theme (Project): | R - Vorhaben Exploration des Sonnensystems | |||||||||
| Location: | Berlin-Adlershof | |||||||||
| Institutes and Institutions: | Institute of Planetary Research > Planetary Physics | |||||||||
| Deposited By: | Ruedas Gomez, Thomas | |||||||||
| Deposited On: | 11 Apr 2017 12:30 | |||||||||
| Last Modified: | 31 Jul 2019 20:08 |
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