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Detection of the Liquid Core Signature in Mars Nutations from InSight-RISE Data: Implications for Mars Interior Structure

Le Maistre, Sébastien and Rivoldini, A. and Caldiero, Alfonso and Yseboodt, M. and Baland, Rose-Marie and Beuthe, Mikael and Van Hoolst, Tim and Dehant, Véronique and Folkner, W. and Buccino, D. R. and Kahan, D.S. and Marty, J.-C. and Antonangeli, D. and Badro, James and Drilleau, M. and Konopliv, A. and Peters, Marie-Julie and Plesa, Ana-Catalina and Samuel, Henri and Tosi, Nicola and Wieczorek, M. and Lognonne, A.P. and Panning, M. and Smrekar, S. and Banerdt, B. (2023) Detection of the Liquid Core Signature in Mars Nutations from InSight-RISE Data: Implications for Mars Interior Structure. 54th Lunar and Planetary Science Conference 2023, 13.-17. Mar.2023, The Woodlands, Texas, USA.

Full text not available from this repository.

Official URL: https://www.hou.usra.edu/meetings/lpsc2023/pdf/1611.pdf

Abstract

Fundamental properties of the interior structure and atmosphere dynamics of Mars can be obtained by precisely measuring its rotation [1]. We report the results of almost four Earth years of monitoring the rotation of Mars with the RISE instrument on InSight. Small periodic variations of the spin axis orientation, called nutations, can be extracted from the Doppler data with enough precision to identify the influence of the Martian fluid core. For the first time for a planetary body other than the Earth, we can measure the period of the Free Core Nutation (FCN), which is a rotational normal mode arising from the misalignment of the rotation axes of the core and mantle. In this way, we confirm the liquid state of the core and estimate its moment of inertia as well as its size and composition.

Item URL in elib:https://elib.dlr.de/196806/
Document Type:Conference or Workshop Item (Poster)
Title:Detection of the Liquid Core Signature in Mars Nutations from InSight-RISE Data: Implications for Mars Interior Structure
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Le Maistre, SébastienRoyal Observatory of Belgium, Brussels, Belgium ; UC Louvain, Louvain-la-Neuve, Belgiumhttps://orcid.org/0000-0002-9524-9479UNSPECIFIED
Rivoldini, A.Royal Observatory of BelgiumUNSPECIFIEDUNSPECIFIED
Caldiero, AlfonsoRoyal Observatory of Belgium, Brussels, Belgium ; UC Louvain, Louvain-la-Neuve, Belgiumhttps://orcid.org/0000-0002-1624-0581UNSPECIFIED
Yseboodt, M.Royal Observatory of Belgium, Brussels, BelgiumUNSPECIFIEDUNSPECIFIED
Baland, Rose-MarieRoyal Observatory of Belgium, Brussels, BelgiumUNSPECIFIEDUNSPECIFIED
Beuthe, MikaelRoyal Observatory of Belgium, Brussels, BelgiumUNSPECIFIEDUNSPECIFIED
Van Hoolst, TimRoyal Observatory of Belgium, Brussels, Belgium ; Institute of Astronomy, KU Leuven, Leuven, Belgiumhttps://orcid.org/0000-0002-9820-8584UNSPECIFIED
Dehant, VéroniqueRoyal Observatory of Belgium, Brussels, Belgium ; UC Louvain, Louvain-la-Neuve, Belgiumhttps://orcid.org/0000-0002-9516-8572UNSPECIFIED
Folkner, W.JPL, California Institute of Technology, Pasadena, CA, USAUNSPECIFIEDUNSPECIFIED
Buccino, D. R.Jet Propulsion Laboratory, California Institute of TechnologyUNSPECIFIEDUNSPECIFIED
Kahan, D.S.Jet Propulsion Laboratory, Pasadena, CA 91109UNSPECIFIEDUNSPECIFIED
Marty, J.-C.CNES, GRGS, Toulouse, FranceUNSPECIFIEDUNSPECIFIED
Antonangeli, D.Sorbonne Université - MNHN - CNRS - IMPMC, Paris, FranceUNSPECIFIEDUNSPECIFIED
Badro, JamesInstitut de Physique du Globe de Paris, Paris, FranceUNSPECIFIEDUNSPECIFIED
Drilleau, M.ISAE-SUPAERO, Toulouse University, Toulouse, FranceUNSPECIFIEDUNSPECIFIED
Konopliv, A.NASA-JPL, Pasadena, USAUNSPECIFIEDUNSPECIFIED
Peters, Marie-JulieRoyal Observatory of Belgium, Brussels, BelgiumUNSPECIFIEDUNSPECIFIED
Plesa, Ana-CatalinaUNSPECIFIEDhttps://orcid.org/0000-0003-3366-7621UNSPECIFIED
Samuel, HenriUniversité de Paris, Institut de Physique du Globe de Paris, CNRS, Paris, Francehttps://orcid.org/0000-0002-3740-9235UNSPECIFIED
Tosi, NicolaUNSPECIFIEDhttps://orcid.org/0000-0002-4912-2848UNSPECIFIED
Wieczorek, M.Institut de Physique du Globe de Paris, FranceUNSPECIFIEDUNSPECIFIED
Lognonne, A.P.Institut de Physique du Globe de ParisUNSPECIFIEDUNSPECIFIED
Panning, M.Jet Propulsion Laboratory, California Institute of Technology, PasadenaUSAUNSPECIFIEDUNSPECIFIED
Smrekar, S.Jet Propulsion Laboratory, California Institute of Technology, PasadenaUNSPECIFIEDUNSPECIFIED
Banerdt, B.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIEDUNSPECIFIED
Date:2023
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:2806
Page Range:p. 1611
Series Name:LPI Contribution
Status:Published
Keywords:Mars, InSight, RISE, Liquid core, Nutations
Event Title:54th Lunar and Planetary Science Conference 2023
Event Location:The Woodlands, Texas, USA
Event Type:international Conference
Event Dates:13.-17. Mar.2023
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Exploration of the Solar System, R - Planetary Evolution and Life, R - Project InSight - HP3
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Deposited By: Plesa, Dr. Ana-Catalina
Deposited On:01 Sep 2023 08:10
Last Modified:01 Sep 2023 08:10

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