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Thickness and structure of the martian crust from InSight seismic data

Knapmeyer-Endrun, B. and Panning, M. and Bissig, Felix and Joshi, Rakshit and Khan, Amir and Kim, Doyeon and Lekic, V. and Tauzin, B. and Tharimena, S. and Plasman, Matthieu and Compaire, Nicolas and Garcia, Raphaël F. and Margerin, L. and Schimmel, M. and Stutzmann, Éléonore and Schmerr, N. and Bozdag, E. and Plesa, Ana-Catalina and Wieczorek, M. and Broquet, A. and Antonangeli, D. and McLennan, S M and Samuel, H. and Michaut, Chloe and Pan, Lu and Smrekar, S. and Johnson, C. L. and Brinkmann, Nienke and Mittelholz, A. and Rivoldini, A. and Davis, P. and Lognonne, P. and Pinot, Baptiste and Scholz, J.-R. and Stähler, S. and Knapmeyer, Martin and van Driel, M and Giardini, D. and Banerdt, B. (2021) Thickness and structure of the martian crust from InSight seismic data. Science, 373 (6553), pp. 438-443. American Association for the Advancement of Science (AAAS). doi: 10.1126/science.abf8966. ISSN 0036-8075.

Full text not available from this repository.

Official URL: https://www.science.org/doi/10.1126/science.abf8966

Abstract

A planet’s crust bears witness to the history of planetary formation and evolution, but for Mars, no absolute measurement of crustal thickness has been available. Here, we determine the structure of the crust beneath the InSight landing site on Mars using both marsquake recordings and the ambient wavefield. By analyzing seismic phases that are reflected and converted at subsurface interfaces, we find that the observations are consistent with models with at least two and possibly three interfaces. If the second interface is the boundary of the crust, the thickness is 20 ± 5 kilometers, whereas if the third interface is the boundary, the thickness is 39 ± 8 kilometers. Global maps of gravity and topography allow extrapolation of this point measurement to the whole planet, showing that the average thickness of the martian crust lies between 24 and 72 kilometers. Independent bulk composition and geodynamic constraints show that the thicker model is consistent with the abundances of crustal heat-producing elements observed for the shallow surface, whereas the thinner model requires greater concentration at depth.

Item URL in elib:https://elib.dlr.de/144204/
Document Type:Article
Title:Thickness and structure of the martian crust from InSight seismic data
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Knapmeyer-Endrun, B.Seismological Observatory Bensberg, University of Cologne, Cologne, GermanyUNSPECIFIED
Panning, M.Jet Propulsion Laboratory, California Institute of Technology, PasadenaUSAUNSPECIFIED
Bissig, FelixInstitute of Geophysics, ETH Zurich, SwitzerlandUNSPECIFIED
Joshi, RakshitMax Planck Institute for Solar System Research, Göttingen, GermanyUNSPECIFIED
Khan, AmirInstitute of Geophysics, ETH Zurich, SwitzerlandUNSPECIFIED
Kim, DoyeonUniversity of Maryland College Park, Department of Geology, College Park, MD, United StatesUNSPECIFIED
Lekic, V.Department of Geology, University of Maryland, College Park, USAUNSPECIFIED
Tauzin, B.Laboratoire de Sciences de la Terre, Université de Lyon I, CNRS and Ecole Normale Supérieure de Lyon, UMR5570, Villeurbanne, FranceUNSPECIFIED
Tharimena, S.Jet Propulsion Laboratory, California Institute of TechnologyUNSPECIFIED
Plasman, MatthieuUniversité de Paris, Institut de physique du globe de Paris, CNRS, Paris, FranceUNSPECIFIED
Compaire, Nicolasnstitut Supérieur de l'Aéronautique et de l'Espace, Toulouse Cedex 04, FranceUNSPECIFIED
Garcia, Raphaël F.Institut Supérieur de l’Aéronautique et de l’Espace (ISAE-SUPAERO), Université de Toulouse, 31400 Toulouse, FranceUNSPECIFIED
Margerin, L.Institut de Recherche en Astrophysique et PlanétologieUNSPECIFIED
Schimmel, M.Instituto de Ciencias de la Tierra Jaume AlmeraUNSPECIFIED
Stutzmann, ÉléonoreInstitut de Physique du Globe de Paris, Université Paris Diderot, Paris, FranceUNSPECIFIED
Schmerr, N.Department of Geology, University of Maryland, College Park, USAUNSPECIFIED
Bozdag, E.Department of Geophysics, Colorado School of Mines, Golden, CO, USAUNSPECIFIED
Plesa, Ana-CatalinaAna.Plesa (at) dlr.dehttps://orcid.org/0000-0003-3366-7621
Wieczorek, M.Observatoire de la Côte d’Azur, Laboratoire LagrangeUNSPECIFIED
Broquet, A.Observatoire de la Côte d’Azur, Laboratoire LagrangeUNSPECIFIED
Antonangeli, D.Sorbonne Université - MNHN - CNRS - IMPMC, Paris, FranceUNSPECIFIED
McLennan, S MDepartment of Geosciences, State University of New York at Stony Brook, Stony Brook, NY, 11794-2100, USA.UNSPECIFIED
Samuel, H.Institut de Physique du Globe, Paris, FranceUNSPECIFIED
Michaut, ChloeEcole Normale Superieure de Lyon, Francehttps://orcid.org/0000-0002-2578-0117
Pan, LuUniversité Lyon 1, FranceUNSPECIFIED
Smrekar, S.Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena CA, 91109UNSPECIFIED
Johnson, C. L.Dept. of Earth and Ocean Sciences, University of British Columbia, Vancouver, BC, CanadaUNSPECIFIED
Brinkmann, NienkeETH ZürichUNSPECIFIED
Mittelholz, A.Institute of Geophysics, ETH ZürichUNSPECIFIED
Rivoldini, A.royal observatory of belgiumUNSPECIFIED
Davis, P.UCLAUNSPECIFIED
Lognonne, P.institut de physique du globe, paris, francehttps://orcid.org/0000-0002-1014-920X
Pinot, BaptisteInstitut Supérieur de l'Aéronautique et de l'Espace, Toulouse Cedex 04, FranceUNSPECIFIED
Scholz, J.-R.Max Planck Institute for Solar System Research, Göttingen, GermanyUNSPECIFIED
Stähler, S.Institute of Geophysics, ETH Zurich, SwitzerlandUNSPECIFIED
Knapmeyer, MartinMartin.Knapmeyer (at) dlr.dehttps://orcid.org/0000-0003-0319-2514
van Driel, MInstitute of Geophysics, ETH Zurich, SwitzerlandUNSPECIFIED
Giardini, D.Institute of Geophysics/Swiss Seismological Service, Swiss Federal Institute of Technology, (ETHZ), Honggerberg, CH-3093 Zurich, SwitzerlandUNSPECIFIED
Banerdt, B.jet propulsion laboratory, pasadena, ca, usaUNSPECIFIED
Date:2021
Journal or Publication Title:Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:373
DOI :10.1126/science.abf8966
Page Range:pp. 438-443
Publisher:American Association for the Advancement of Science (AAAS)
ISSN:0036-8075
Status:Published
Keywords:Mars, InSight, Crustal thickness, Crustal structure, Seismic data
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 - Project InSight - HP3, R - Exploration of the Solar System
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Deposited By: Plesa, Dr. Ana-Catalina
Deposited On:05 Oct 2021 07:46
Last Modified:05 Oct 2021 07:46

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