000006678 001__ 6678
000006678 005__ 20240126141858.0
000006678 037__ $$aCTALK-2024-0028
000006678 100__ $$aSeuren, Fleur
000006678 245__ $$aThe influence of stably stratified layers in the fluid cores of planets.
000006678 260__ $$c2023
000006678 269__ $$c2023-05-17
000006678 520__ $$aStably stratified layers are widespread phenomena in geophysical and astrophysical applications. Formed by either the accumulation of light elements or a sub-adiabatic heat flux in the fluid parts of planetary or stellar cores, these stratified regions can have an immense influence on the environment in which they are generated. The weakness of Mercury’s magnetic field and the axisymmetry of Saturn’s magnetic field are for instance most likely caused by a strong stratified layer and oscillations in a stable layer at the top of the Earth’s core could be linked to observed variations in the length-of-day and magnetic field. Yet, many uncertainties about the causes and consequences of stratified layers remain and even regarding our own planet, the existence, extend and strength of the stable layer is still heavily debated. To address some of these open questions, we present in this study a linear numerical model, with applications to Mercury and the Earth, to investigate the fluid flow response in stably stratified layers and their impact on magnetic fields and rotation.
000006678 536__ $$aH2020/$$c855677/$$fGRACEFUL
000006678 594__ $$aNO
000006678 700__ $$aRekier, Jérémy
000006678 700__ $$aTriana, Santiago Andrés
000006678 700__ $$aVan Hoolst, Tim
000006678 700__ $$aDehant, Véronique
000006678 773__ $$tBPS General Scientific Meeting
000006678 8560_ $$ffleur.seuren@ksb-orb.be
000006678 8564_ $$s7691703$$uhttp://publi2-as.oma.be/record/6678/files/seuren_bps23.pdf
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000006678 906__ $$aInvited
000006678 980__ $$aCTALKINVI