Knapmeyer-Endrun, Brigitte ORCID: 0000-0003-3309-6785, Panning, Mark P., Bissig, Felix, Joshi, Rakshit ORCID: 0000-0002-0434-4199, Khan, Amir, Kim, Doyeon ORCID: 0000-0003-4594-2336, Lekic, Vedran ORCID: 0000-0002-3548-272X, Tauzin, Benoit ORCID: 0000-0002-9589-4304, Tharimena, Saikiran ORCID: 0000-0002-1841-1911, Plasman, Matthieu ORCID: 0000-0002-5630-2089, Compaire, Nicolas, Garcia, Raphael F., Margerin, Ludovic ORCID: 0000-0003-4848-3227, Schimmel, Martin ORCID: 0000-0003-2601-4462, Stutzmann, Eleonore, Schmerr, Nicholas, Bozdag, Ebru, Plesa, Ana-Catalina, Wieczorek, Mark A., Broquet, Adrien ORCID: 0000-0002-5153-303X, Antonangeli, Daniele, McLennan, Scott M., Samuel, Henri, Michaut, Chloe, Pan, Lu ORCID: 0000-0002-8151-2125, Smrekar, Suzanne E., Johnson, Catherine L., Brinkman, Nienke, Mittelholz, Anna, Rivoldini, Attilio, Davis, Paul M., Lognonne, Philippe ORCID: 0000-0002-1014-920X, Pinot, Baptiste, Scholz, John-Robert, Stahler, Simon, Knapmeyer, Martin ORCID: 0000-0003-0319-2514, van Driel, Martin, Giardini, Domenico and Banerdt, W. Bruce (2021). Thickness and structure of the martian crust from InSight seismic data. Science, 373 (6553). S. 438 - 508. WASHINGTON: AMER ASSOC ADVANCEMENT SCIENCE. ISSN 1095-9203

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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 Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Knapmeyer-Endrun, BrigitteUNSPECIFIEDorcid.org/0000-0003-3309-6785UNSPECIFIED
Panning, Mark P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bissig, FelixUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Joshi, RakshitUNSPECIFIEDorcid.org/0000-0002-0434-4199UNSPECIFIED
Khan, AmirUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kim, DoyeonUNSPECIFIEDorcid.org/0000-0003-4594-2336UNSPECIFIED
Lekic, VedranUNSPECIFIEDorcid.org/0000-0002-3548-272XUNSPECIFIED
Tauzin, BenoitUNSPECIFIEDorcid.org/0000-0002-9589-4304UNSPECIFIED
Tharimena, SaikiranUNSPECIFIEDorcid.org/0000-0002-1841-1911UNSPECIFIED
Plasman, MatthieuUNSPECIFIEDorcid.org/0000-0002-5630-2089UNSPECIFIED
Compaire, NicolasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garcia, Raphael F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Margerin, LudovicUNSPECIFIEDorcid.org/0000-0003-4848-3227UNSPECIFIED
Schimmel, MartinUNSPECIFIEDorcid.org/0000-0003-2601-4462UNSPECIFIED
Stutzmann, EleonoreUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schmerr, NicholasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bozdag, EbruUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Plesa, Ana-CatalinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wieczorek, Mark A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Broquet, AdrienUNSPECIFIEDorcid.org/0000-0002-5153-303XUNSPECIFIED
Antonangeli, DanieleUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
McLennan, Scott M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Samuel, HenriUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Michaut, ChloeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pan, LuUNSPECIFIEDorcid.org/0000-0002-8151-2125UNSPECIFIED
Smrekar, Suzanne E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johnson, Catherine L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brinkman, NienkeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mittelholz, AnnaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rivoldini, AttilioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Davis, Paul M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lognonne, PhilippeUNSPECIFIEDorcid.org/0000-0002-1014-920XUNSPECIFIED
Pinot, BaptisteUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scholz, John-RobertUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stahler, SimonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Knapmeyer, MartinUNSPECIFIEDorcid.org/0000-0003-0319-2514UNSPECIFIED
van Driel, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Giardini, DomenicoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Banerdt, W. BruceUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-607027
DOI: 10.1126/science.abf8966
Journal or Publication Title: Science
Volume: 373
Number: 6553
Page Range: S. 438 - 508
Date: 2021
Publisher: AMER ASSOC ADVANCEMENT SCIENCE
Place of Publication: WASHINGTON
ISSN: 1095-9203
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
AMBIENT NOISE DATA; RECEIVER FUNCTIONS; CROSS-CORRELATION; THERMAL EVOLUTION; BULK COMPOSITION; MANTLE STRUCTURE; MARS; SURFACE; AUTOCORRELATION; DECONVOLUTIONMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60702

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