Constraining the Venus Interior Structure with Future VERITAS Measurements of the Gravitational Atmospheric Loading

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dc.contributor.authorCascioli, Gael
dc.contributor.authorRenaud, Joe P.
dc.contributor.authorMazarico, Erwan
dc.contributor.authorDurante, Daniele
dc.contributor.authorIess, Luciano
dc.contributor.authorGoossens, Sander
dc.contributor.authorSmrekar, Suzanne
dc.date.accessioned2023-05-15T19:57:02Z
dc.date.available2023-05-15T19:57:02Z
dc.date.issued2023-04-12
dc.description.abstractThe complex dynamics of the Venus atmosphere produces a periodic mass redistribution pattern that creates a time-variable modulation of the gravity field of Venus. This gravity signal depends on the net transport of mass across the globe and on the response of the solid body to the normal loading of its crust imparted by the atmosphere. In this work, we explore the possibility of measuring this phenomenon with VERITAS, a NASA Discovery-class mission. By simulating the gravity science experiment, we explore the possibility of measuring the response of Venus to the atmospheric loading, parametrized by the loading Love numbers (𝘬ₗ'), and assess the dependence of these parameters on fundamental interior structure properties. Using the most recent models of Venus' interior, we compute the Venus Love numbers in a compressible viscoelastic setting and compare them with the predicted uncertainty of the VERITAS measurements. We show that VERITAS will measure 𝘬₂' at the 4% level and that this measurement could possibly help to distinguish between different equally plausible interior structure models, especially allowing us to distinguish different rheological laws. We also show that a measurement campaign such as the VERITAS gravity science investigation has the potential of measuring 𝘬₂' not only at the loading forcing frequency, but also at the tidal frequency, ultimately providing a way to probe the response of the planet at different forcing periods.en_US
dc.description.sponsorshipG.C. and J.P.R. would like to acknowledge support for this work from NASA under award number 80GSFC21M0002. G.C. and E.M. acknowledge support from the VERITAS mission. J.P.R. and S.G. acknowledge support from the Planetary Geodesy Internal Scientist Funding Model work package funded by the NASA Planetary Science Division. D.D and L.I. would like to acknowledge support for this work from the Italian Space Agency (ASI) under contract number 2022-15-HH.0.en_US
dc.description.urihttps://iopscience.iop.org/article/10.3847/PSJ/acc73cen_US
dc.format.extent14 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2w90a-r5kb
dc.identifier.citationGael Cascioli, et al. "Constraining the Venus Interior Structure with Future VERITAS Measurements of the Gravitational Atmospheric Loading" Planet. Sci. J. 4 , 65 (12 April, 2023). https://doi.org/10.3847/PSJ/acc73c.en_US
dc.identifier.urihttps://doi.org/10.3847/PSJ/acc73c
dc.identifier.urihttp://hdl.handle.net/11603/27914
dc.language.isoen_USen_US
dc.publisherIOPen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleConstraining the Venus Interior Structure with Future VERITAS Measurements of the Gravitational Atmospheric Loadingen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9070-7947en_US

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