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dc.contributor.author
Knapmeyer-Endrun, Brigitte
dc.contributor.author
Panning, Mark P.
dc.contributor.author
Bissig, Felix
dc.contributor.author
Joshi, Rakshit
dc.contributor.author
Khan, Amir
dc.contributor.author
Kim, Doyeon
dc.contributor.author
Lekic, Vedran
dc.contributor.author
Tauzin, Benoit
dc.contributor.author
Tharimena, Saikiran
dc.contributor.author
Plasman, Matthieu
dc.contributor.author
Compaire, Nicolas
dc.contributor.author
Garcia, Raphael F.
dc.contributor.author
Margerin, Ludovic
dc.contributor.author
Schimmel, Martin
dc.contributor.author
Stutzmann, Éléonore
dc.contributor.author
Schmerr, Nicholas
dc.contributor.author
Bozdağ, Ebru
dc.contributor.author
Plesa, Ana-Catalina
dc.contributor.author
Wieczorek, Mark A.
dc.contributor.author
Broquet, Adrien
dc.contributor.author
Brinkman, Nienke
dc.contributor.author
Mittelholz, Anna
dc.contributor.author
Stähler, Simon Christian
dc.contributor.author
van Driel, Martin
dc.contributor.author
Giardini, Domenico
dc.contributor.author
et al.
dc.date.accessioned
2021-07-30T06:50:29Z
dc.date.available
2021-07-28T07:58:30Z
dc.date.available
2021-07-30T06:50:29Z
dc.date.issued
2021-07-23
dc.identifier.issn
0036-8075
dc.identifier.issn
1095-9203
dc.identifier.other
10.1126/science.abf8966
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/498071
dc.description.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.
en_US
dc.language.iso
en
en_US
dc.publisher
American Association for the Advancement of Science
en_US
dc.title
Thickness and structure of the martian crust from InSight seismic data
en_US
dc.type
Journal Article
ethz.journal.title
Science
ethz.journal.volume
373
en_US
ethz.journal.issue
6553
en_US
ethz.pages.start
438
en_US
ethz.pages.end
443
en_US
ethz.grant
Magnetic Sounding of terrestrial bodies in our Solar System
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02506 - Institut für Geophysik / Institute of Geophysics::03476 - Giardini, Domenico / Giardini, Domenico
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02330 - Dep. Erdwissenschaften / Dep. of Earth Sciences::02506 - Institut für Geophysik / Institute of Geophysics::03476 - Giardini, Domenico / Giardini, Domenico
en_US
ethz.grant.agreementno
19-2 FEL-34
ethz.grant.fundername
ETHZ
ethz.grant.funderDoi
10.13039/501100003006
ethz.grant.program
ETH Fellows
ethz.date.deposited
2021-07-28T07:58:35Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-07-30T06:50:35Z
ethz.rosetta.lastUpdated
2021-07-30T06:50:35Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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