Seismic detection of the martian core

Simon C. Stähler; Amir Khan; W. Bruce Banerdt; Philippe Lognonné; Domenico Giardini; Savas Ceylan; Mélanie Drilleau; Raphaël F. Garcia; A. Cecilia Duran; Quancheng Huang; Doyeon Kim; Vedran Lekić; Henri Samuel; Martin Schimmel; Nicholas Schmerr; David Sollberger; Éléonore Stutzmann; Zongbo Xu; Constantinos Charalambous; Paul M Davis; Daniele Antonangeli; Jessica C E Irving; Martin Knapmeyer; Taichi Kawamura; Ross Maguire; Angela Marusiak; Mark Panning; Clément Perrin; Ana Catalina Plesa; Attilio Rivoldini; Cedric Schmelzbach; Géraldine Zenhäusern; Éric Beucler; John Clinton; Nikolaj L. Dahmen; Martin van Driel; Tamara Gudkova; Anna Horleston; Tom Pike; Matthieu Plasman; S. Smrekar

doi:10.1126/science.abi7730

Seismic detection of the martian core

Simon C. Stähler, Amir Khan, W. Bruce Banerdt, Philippe Lognonné, Domenico Giardini, Savas Ceylan, Mélanie Drilleau, Raphaël F. Garcia, A. Cecilia Duran, Quancheng Huang, Doyeon Kim, Vedran Lekić, Henri Samuel, Martin Schimmel, Nicholas Schmerr, David Sollberger, Éléonore Stutzmann, Zongbo Xu, Constantinos Charalambous, Paul M DavisDaniele Antonangeli, Jessica C E Irving, Martin Knapmeyer, Taichi Kawamura, Ross Maguire, Angela Marusiak, Mark Panning, Clément Perrin, Ana Catalina Plesa, Attilio Rivoldini, Cedric Schmelzbach, Géraldine Zenhäusern, Éric Beucler, John Clinton, Nikolaj L. Dahmen, Martin van Driel, Tamara Gudkova, Anna Horleston, Tom Pike, Matthieu Plasman, S. Smrekar

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Abstract

Clues to a planet’s geologic history are contained in its interior structure, particularly its core. We detected reflections of seismic waves from the core-mantle boundary of Mars using InSight seismic data and inverted these together with geodetic data to constrain the radius of the liquid metal core to 1830 ± 40 kilometers. The large core implies a martian mantle mineralogically similar to the terrestrial upper mantle and transition zone but differing from Earth by not having a bridgmanite-dominated lower mantle. We inferred a mean core density of 5.7 to 6.3 grams per cubic centimeter, which requires a substantial complement of light elements dissolved in the iron-nickel core. The seismic core shadow as seen from InSight’s location covers half the surface of Mars, including the majority of potentially active regions—e.g., Tharsis—possibly limiting the number of detectable marsquakes.

Original language	English
Pages (from-to)	443-448
Number of pages	6
Journal	Science
Volume	373
Issue number	6553
DOIs	https://doi.org/10.1126/science.abi7730
Publication status	Published - 23 Jul 2021

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© 2021 American Association for the Advancement of Science. All rights reserved.

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Stähler, S. C., Khan, A., Banerdt, W. B., Lognonné, P., Giardini, D., Ceylan, S., Drilleau, M., Garcia, R. F., Duran, A. C., Huang, Q., Kim, D., Lekić, V., Samuel, H., Schimmel, M., Schmerr, N., Sollberger, D., Stutzmann, É., Xu, Z., Charalambous, C., ... Smrekar, S. (2021). Seismic detection of the martian core. Science, 373(6553), 443-448. https://doi.org/10.1126/science.abi7730

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title = "Seismic detection of the martian core",

abstract = "Clues to a planet{\textquoteright}s geologic history are contained in its interior structure, particularly its core. We detected reflections of seismic waves from the core-mantle boundary of Mars using InSight seismic data and inverted these together with geodetic data to constrain the radius of the liquid metal core to 1830 ± 40 kilometers. The large core implies a martian mantle mineralogically similar to the terrestrial upper mantle and transition zone but differing from Earth by not having a bridgmanite-dominated lower mantle. We inferred a mean core density of 5.7 to 6.3 grams per cubic centimeter, which requires a substantial complement of light elements dissolved in the iron-nickel core. The seismic core shadow as seen from InSight{\textquoteright}s location covers half the surface of Mars, including the majority of potentially active regions—e.g., Tharsis—possibly limiting the number of detectable marsquakes.",

author = "St{\"a}hler, \{Simon C.\} and Amir Khan and Banerdt, \{W. Bruce\} and Philippe Lognonn{\'e} and Domenico Giardini and Savas Ceylan and M{\'e}lanie Drilleau and Garcia, \{Rapha{\"e}l F.\} and Duran, \{A. Cecilia\} and Quancheng Huang and Doyeon Kim and Vedran Leki{\'c} and Henri Samuel and Martin Schimmel and Nicholas Schmerr and David Sollberger and {\'E}l{\'e}onore Stutzmann and Zongbo Xu and Constantinos Charalambous and Davis, \{Paul M\} and Daniele Antonangeli and Irving, \{Jessica C E\} and Martin Knapmeyer and Taichi Kawamura and Ross Maguire and Angela Marusiak and Mark Panning and Cl{\'e}ment Perrin and Plesa, \{Ana Catalina\} and Attilio Rivoldini and Cedric Schmelzbach and G{\'e}raldine Zenh{\"a}usern and {\'E}ric Beucler and John Clinton and Dahmen, \{Nikolaj L.\} and \{van Driel\}, Martin and Tamara Gudkova and Anna Horleston and Tom Pike and Matthieu Plasman and S. Smrekar",

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doi = "10.1126/science.abi7730",

language = "English",

volume = "373",

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Stähler, SC, Khan, A, Banerdt, WB, Lognonné, P, Giardini, D, Ceylan, S, Drilleau, M, Garcia, RF, Duran, AC, Huang, Q, Kim, D, Lekić, V, Samuel, H, Schimmel, M, Schmerr, N, Sollberger, D, Stutzmann, É, Xu, Z, Charalambous, C, Davis, PM, Antonangeli, D, Irving, JCE, Knapmeyer, M, Kawamura, T, Maguire, R, Marusiak, A, Panning, M, Perrin, C, Plesa, AC, Rivoldini, A, Schmelzbach, C, Zenhäusern, G, Beucler, É, Clinton, J, Dahmen, NL, van Driel, M, Gudkova, T, Horleston, A, Pike, T, Plasman, M & Smrekar, S 2021, 'Seismic detection of the martian core', Science, vol. 373, no. 6553, pp. 443-448. https://doi.org/10.1126/science.abi7730

TY - JOUR

T1 - Seismic detection of the martian core

AU - Stähler, Simon C.

AU - Khan, Amir

AU - Banerdt, W. Bruce

AU - Lognonné, Philippe

AU - Giardini, Domenico

AU - Ceylan, Savas

AU - Drilleau, Mélanie

AU - Garcia, Raphaël F.

AU - Duran, A. Cecilia

AU - Huang, Quancheng

AU - Kim, Doyeon

AU - Lekić, Vedran

AU - Samuel, Henri

AU - Schimmel, Martin

AU - Schmerr, Nicholas

AU - Sollberger, David

AU - Stutzmann, Éléonore

AU - Xu, Zongbo

AU - Charalambous, Constantinos

AU - Davis, Paul M

AU - Antonangeli, Daniele

AU - Irving, Jessica C E

AU - Knapmeyer, Martin

AU - Kawamura, Taichi

AU - Maguire, Ross

AU - Marusiak, Angela

AU - Panning, Mark

AU - Perrin, Clément

AU - Plesa, Ana Catalina

AU - Rivoldini, Attilio

AU - Schmelzbach, Cedric

AU - Zenhäusern, Géraldine

AU - Beucler, Éric

AU - Clinton, John

AU - Dahmen, Nikolaj L.

AU - van Driel, Martin

AU - Gudkova, Tamara

AU - Horleston, Anna

AU - Pike, Tom

AU - Plasman, Matthieu

AU - Smrekar, S.

PY - 2021/7/23

Y1 - 2021/7/23

N2 - Clues to a planet’s geologic history are contained in its interior structure, particularly its core. We detected reflections of seismic waves from the core-mantle boundary of Mars using InSight seismic data and inverted these together with geodetic data to constrain the radius of the liquid metal core to 1830 ± 40 kilometers. The large core implies a martian mantle mineralogically similar to the terrestrial upper mantle and transition zone but differing from Earth by not having a bridgmanite-dominated lower mantle. We inferred a mean core density of 5.7 to 6.3 grams per cubic centimeter, which requires a substantial complement of light elements dissolved in the iron-nickel core. The seismic core shadow as seen from InSight’s location covers half the surface of Mars, including the majority of potentially active regions—e.g., Tharsis—possibly limiting the number of detectable marsquakes.

AB - Clues to a planet’s geologic history are contained in its interior structure, particularly its core. We detected reflections of seismic waves from the core-mantle boundary of Mars using InSight seismic data and inverted these together with geodetic data to constrain the radius of the liquid metal core to 1830 ± 40 kilometers. The large core implies a martian mantle mineralogically similar to the terrestrial upper mantle and transition zone but differing from Earth by not having a bridgmanite-dominated lower mantle. We inferred a mean core density of 5.7 to 6.3 grams per cubic centimeter, which requires a substantial complement of light elements dissolved in the iron-nickel core. The seismic core shadow as seen from InSight’s location covers half the surface of Mars, including the majority of potentially active regions—e.g., Tharsis—possibly limiting the number of detectable marsquakes.

UR - https://mars.nasa.gov/insight/mission/science/research-papers/

U2 - 10.1126/science.abi7730

DO - 10.1126/science.abi7730

M3 - Article (Academic Journal)

C2 - 34437118

SN - 0036-8075

VL - 373

SP - 443

EP - 448

JO - Science

JF - Science

IS - 6553

ER -

Seismic detection of the martian core

Abstract

Bibliographical note

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Exploring the Seismicity of Mars with InSight (YR1)

Mars' crustal structure and seismic environment from NASA/InSight (updated for 1/4/2018 start)

Short Period Seismology with the InSight Microseismometer

Cite this

Seismic detection of the martian core

Abstract

Bibliographical note

Access to Document

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Other files and links

Fingerprint

Projects

Exploring the Seismicity of Mars with InSight (YR1)

Mars' crustal structure and seismic environment from NASA/InSight (updated for 1/4/2018 start)

Short Period Seismology with the InSight Microseismometer

Cite this