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Statut |
Confirmé |
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Série |
SEM-BESSON |
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Domaines |
cond-mat |
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Date |
Lundi 16 Septembre 2013 |
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Heure |
10:30 |
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Institut |
IMPMC |
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Salle |
Salle de conférence, 3ème étage, salle 317,Tour 22-23,INSP,4,Place Jussieu |
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Nom de l'orateur |
Hunt |
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Prenom de l'orateur |
Simon |
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Addresse email de l'orateur |
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Institution de l'orateur |
Department of Earth Sciences, University College London |
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Titre |
Dynamics of D"; inferred from low-pressure MgSiO3 analogues |
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Résumé |
The physical properties of the post-perovskite phase of MgSiO3 have a significant effect on the dynamics of the core-mantle boundary and therefore on mantle convection in the Earth. However, the extreme pressure and temperature at under which MgSiO3 post-perovskite is stable makes measuring its thermo-mechanical properties at best extremely difficult. However, low-pressure analogue materials exist which take both the perovskite and post-perovskite structures, at conditions accessible by standard multi anvil techniques. We have made physical property measurements of these analogue materials which give insight into the physical properties of MgSiO3 post-perovskite and therefore the dynamics of mantle’s lower thermal boundary layer and mantle convection. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
- seminHUNT2013-1.pdf ( bytes)
- seminHUNT2013-1.pdf ( bytes)
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