000008175 001__ 8175
000008175 005__ 20260914104010.0
000008175 037__ $$aPOSTER-2026-0084
000008175 100__ $$aRivoldini, Attilio
000008175 245__ $$aMercury’s interior structure constrained from geodesy data and thermal state
000008175 260__ $$c2026
000008175 269__ $$c2026-09-01
000008175 520__ $$aInterior structure inferences for Mercury based on geodetic data can be strongly affected by prior assumptions about the detailed thermal structure of the core. In particular, the presence of a conductive, thermally stratified layer in the upper core (CTSL) is often neglected, although it directly affects the core temperature profile and, consequently, inferences of core composition and inner-core radius. The upper CTSL is a key component of numerical dynamo simulations that can explain important features of Mercury’s magnetic field. Additional support for a CTSL also comes from thermal evolution studies that use constraints on dynamo activity in the core. In this study, we assess how assumptions about core composition, the present-day thermal state, and the CTSL affect Mercury’s annual libration amplitude, long-period libration, obliquity, and tidal Love numbers. To determine the present-day thermal state, we use results from whole-planet thermal evolution simulations that are consistent with assumptions about core composition and constrained by crustal thickness as well as past and present dynamo activity. We also investigate the effects of internal couplings and dynamical shape on libration and obliquity.
000008175 536__ $$a3PRODPLANINT/$$c3PRODPLANINT/$$f3PRODPLANINT
000008175 594__ $$aNO
000008175 700__ $$aTosi, Nicola
000008175 700__ $$aLécaille, Manon
000008175 700__ $$aVan Hoolst, Tim
000008175 700__ $$aTrinh, Anthony
000008175 700__ $$aBaland, Rose-Marie
000008175 700__ $$aYseboodt, Marie
000008175 700__ $$aXiao, Haifeng
000008175 773__ $$tMercury 2026 – An International Meeting on Planet Mercury, Leuven, Belgium
000008175 8560_ $$fattilio.rivoldini@ksb-orb.be
000008175 8564_ $$s5507681$$uhttps://publi2-as.oma.be/record/8175/files/Rivoldini poster.pdf
000008175 8564_ $$s22594$$uhttps://publi2-as.oma.be/record/8175/files/Rivoldini poster.gif?subformat=icon$$xicon
000008175 8564_ $$s24811$$uhttps://publi2-as.oma.be/record/8175/files/Rivoldini poster.jpg?subformat=icon-180$$xicon-180
000008175 980__ $$aCPOSTER