000004596 001__ 4596
000004596 005__ 20200124112702.0
000004596 037__ $$aPOSTER-2020-0023
000004596 100__ $$aRivoldini, Attilio
000004596 245__ $$aNon-hydrostatic effects on Mars’ nutation
000004596 260__ $$c2019
000004596 269__ $$c2019-04-12
000004596 520__ $$aMars’ tidally forced nutation can be resonantly amplified owing to a rotational normal mode called the Free CoreNutation (FCN) which exists because the mantle and fluid part of the core can have a relative rotational motion.The period of the FCN and the amplitude of the nutation depend on the moments of inertia of the mantle and core,as well as on the deformation of the planet due to rotation rate variations and tidal forcing. One of the goals of theRISE experiment on InSight and of the future LaRa experiment on ExoMars 2020 is to infer the core radius ofMars by measuring nutation. Precise core radius determination from the FCN period requires knowledge of thecore shape. Here we study how non-hydrostatic core shape models affect the FCN and discuss to what extent theshape of the core could be inferred if its radius were known.
000004596 536__ $$aESA/$$cPRODEX/$$fPlanetInt ESA/PRODEX/LaRa
000004596 594__ $$aNO
000004596 700__ $$aBeuthe, Mikael
000004596 700__ $$aVan Hoolst, Tim
000004596 700__ $$aWieczorek, Mark
000004596 700__ $$aBaland, Rose-Marie 
000004596 700__ $$aDehant, Véronique 
000004596 700__ $$aFolkner, William 
000004596 700__ $$aGudkova, Tamara
000004596 700__ $$aLe Maistre, Sébastien
000004596 700__ $$aPéters, Marie-Julie
000004596 700__ $$aYseboodt, Marie
000004596 700__ $$aZharkov, Vladimir
000004596 773__ $$tEGU General Assembly, EGU2019, 7-19 April, 2019 in Vienna, Austria
000004596 8560_ $$frose-marie.baland@observatoire.be
000004596 85642 $$ahttps://meetingorganizer.copernicus.org/EGU2019/EGU2019-17999.pdf
000004596 980__ $$aCPOSTER