Seismic detection of the martian core-Reference-Cited by-同舟云学术

Seismic detection of the martian core

Published:2021-07-23 Issue:6553 Volume:373 Page:443-448
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Stähler Simon C.¹^ORCID,Khan Amir¹²^ORCID,Banerdt W. Bruce³^ORCID,Lognonné Philippe⁴^ORCID,Giardini Domenico¹^ORCID,Ceylan Savas¹^ORCID,Drilleau Mélanie⁵^ORCID,Duran A. Cecilia¹^ORCID,Garcia Raphaël F.⁵^ORCID,Huang Quancheng⁶^ORCID,Kim Doyeon⁶^ORCID,Lekic Vedran⁶^ORCID,Samuel Henri⁴,Schimmel Martin⁷^ORCID,Schmerr Nicholas⁶^ORCID,Sollberger David¹^ORCID,Stutzmann Éléonore⁴^ORCID,Xu Zongbo⁴^ORCID,Antonangeli Daniele⁸^ORCID,Charalambous Constantinos⁹^ORCID,Davis Paul M.¹⁰^ORCID,Irving Jessica C. E.¹¹^ORCID,Kawamura Taichi⁴^ORCID,Knapmeyer Martin¹²^ORCID,Maguire Ross⁶^ORCID,Marusiak Angela G.³^ORCID,Panning Mark P.³^ORCID,Perrin Clément¹³^ORCID,Plesa Ana-Catalina¹²,Rivoldini Attilio¹⁴^ORCID,Schmelzbach Cédric¹^ORCID,Zenhäusern Géraldine¹^ORCID,Beucler Éric¹³^ORCID,Clinton John¹⁵^ORCID,Dahmen Nikolaj¹^ORCID,van Driel Martin¹^ORCID,Gudkova Tamara¹⁶,Horleston Anna¹¹^ORCID,Pike W. Thomas⁹^ORCID,Plasman Matthieu⁴^ORCID,Smrekar Suzanne E.³^ORCID

Affiliation:

1. Institute of Geophysics, ETH Zürich, Zürich, Switzerland.

2. Physik-Institut, University of Zürich, Zürich, Switzerland.

3. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.

4. Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, France.

5. Institut Supérieur de l’Aéronautique et de l’Espace SUPAERO, Toulouse, France.

6. Department of Geology, University of Maryland, College Park, MD, USA.

7. Geosciences Barcelona – CSIC, Barcelona, Spain.

8. Sorbonne Université, Muséum National d’Histoire Naturelle, UMR CNRS 7590, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, IMPMC, Paris, France.

9. Department of Electrical and Electronic Engineering, Imperial College, London, UK.

10. Department of Earth, Planetary, and Space Sciences, University of California Los Angeles, Los Angeles, CA, USA.

11. School of Earth Sciences, University of Bristol, Bristol, UK.

12. DLR Institute of Planetary Research, Berlin, Germany.

13. Laboratoire de Planétologie et Géodynamique (LPG), UMR CNRS 6112, Université de Nantes, Université d’Angers, France.

14. Royal Observatory of Belgium, Brussels, Belgium.

15. Swiss Seismological Service (SED), ETH Zürich, Zürich, Switzerland.

16. Schmidt Institute of Physics of the Earth RAS, Moscow, Russia.

Abstract

Single seismometer structure Because of the lack of direct seismic observations, the interior structure of Mars has been a mystery. Khan et al. , Knapmeyer-Endrun et al. , and Stähler et al. used recently detected marsquakes from the seismometer deployed during the InSight mission to map the interior of Mars (see the Perspective by Cottaar and Koelemeijer). Mars likely has a 24- to 72-kilometer-thick crust with a very deep lithosphere close to 500 kilometers. Similar to the Earth, a low-velocity layer probably exists beneath the lithosphere. The crust of Mars is likely highly enriched in radioactive elements that help to heat this layer at the expense of the interior. The core of Mars is liquid and large, ∼1830 kilometers, which means that the mantle has only one rocky layer rather than two like the Earth has. These results provide a preliminary structure of Mars that helps to constrain the different theories explaining the chemistry and internal dynamics of the planet. Science , abf2966, abf8966, abi7730, this issue p. 434 , p. 438 , p. 443 see also abj8914, p. 388

Funder

David and Lucile Packard Foundation

National Aeronautics and Space Administration

H2020 European Research Council

UK Space Agency

Agence Nationale de la Recherche

Eidgenössische Technische Hochschule Zürich

Deutsches Zentrum für Luft- und Raumfahrt

Consejo Superior de Investigaciones Científicas

PRODEX

Publisher

American Association for the Advancement of Science (AAAS)