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Journal Articles Nature Geoscience Year : 2020

Initial results from the InSight mission on Mars

1 JPL - Jet Propulsion Laboratory
2 Cornell University [New York]
3 Institute of Geophysics [ETH Zürich]
4 UBC EOAS - Department of Earth, Ocean and Atmospheric Sciences [Vancouver]
5 IPGP - Institut de Physique du Globe de Paris
6 LMD - Laboratoire de Météorologie Dynamique (UMR 8539)
7 DLR Institut für Planetenforschung
8 IPGP - Institut de Physique du Globe de Paris
9 IMPMC - Institut de minéralogie, de physique des matériaux et de cosmochimie
10 AOPP - Department of Atmospheric, Oceanic and Planetary Physics [Oxford]
11 Department of Geosciences [Princeton]
12 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
13 Department of Earth Science and Engineering [Imperial College London]
14 Department of Earth, Environmental and Planetary Sciences [Providence]
15 ROB - Royal Observatory of Belgium = Observatoire Royal de Belgique
16 SSL - Space Sciences Laboratory [Berkeley]
17 DEOS - Département Electronique, Optronique et Signal
18 DLR - Deutsches Zentrum für Luft- und Raumfahrt [Berlin]
19 IRSGIS - Institute of Remote Sensing and Geographic Information System
20 OeAW - Austrian Academy of Sciences
21 Graphics Lab - Graphics and Vision Research Laboratory
22 DLR - Deutsches Zentrum für Luft- und Raumfahrt
23 SSI - Space Science Institute [Boulder]
24 APL - Johns Hopkins University Applied Physics Laboratory [Laurel, MD]
25 Department of Geosciences
26 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement
27 LPG - Laboratoire de Planétologie et Géodynamique [UMR 6112]
28 AstraZeneca
29 SwRI - Southwest Research Institute [Boulder]
30 Aeolis Research
31 Department of Earth and Planetary Sciences [Santa Cruz]
32 AIM (UMR7158 / UMR_E_9005 / UM_112) - Astrophysique Interprétation Modélisation
33 CAB - Centro de Astrobiologia [Madrid]
34 UCLA - University of California [Los Angeles]
35 OU - The Open University [Milton Keynes]
36 Morton K. Blaustein Department of Earth and Planetary Sciences [Baltimore]
37 School of Earth Sciences [Bristol]
38 USC - University of Southern California
W. Bruce Banerdt
  • Function : Author
Suzanne Smrekar
Don Banfield
Matthew Golombek
Tilman Spohn
Simon C Stähler
Sami Asmar
Caroline Beghein
Peter Chi
John Clinton
  • Function : Author
Melanie Drilleau
Matthew Fillingim
William Folkner
Jim Garvin
John Grant
Troy Hudson
Jessica Irving
Taichi Kawamura
Scott King
Mark Lemmon
Justin Maki
Ludovic Margerin
Scott Mclennan
Paul Morgan
  • Function : Author
Nils Mueller
Seiichi Nagihara
  • Function : Author
Claire Newman
Mark P Panning
W. Thomas Pike
Nicholas Schmerr
Eléanore Stutzmann
  • Function : Author
Nicholas Teanby
Jeroen Tromp
Martin van Driel
  • Function : Author
Renee Weber
  • Function : Author
Mark Wieczorek

Abstract

It aims to determine the interior structure, composition and thermal state of Mars, as well as constrain present-day seismicity and impact cratering rates. Such information is key to understanding the differentiation and subsequent thermal evolution of Mars, and thus the forces that shape the planet's surface geology and volatile processes. Here we report an overview of the first ten months of geophysical observations by InSight. As of 30 September 2019, 174 seismic events have been recorded by the lander's seismometer, including over 20 events of moment magnitude M w = 3-4. The detections thus far are consistent with tectonic origins, with no impact-induced seismicity yet observed, and indicate a seismically active planet. An assessment of these detections suggests that the frequency of global seismic events below approximately M w = 3 is similar to that of terrestrial intraplate seismic activity, but there are fewer larger quakes; no quakes exceeding M w = 4 have been observed. The lander's other instruments-two cameras, atmospheric pressure, temperature and wind sensors, a magnetometer and a radiometer-have yielded much more than the intended supporting data for seismometer noise characterization: magnetic field measurements indicate a local magnetic field that is ten-times stronger than orbital estimates and meteorological measurements reveal a more dynamic atmosphere than expected, hosting baroclinic and gravity waves and convective vortices. With the mission due to last for an entire Martian year or longer, these results will be built on by further measurements by the InSight lander.
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Dates and versions

hal-02531541 , version 1 (01-04-2021)

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W. Bruce Banerdt, Suzanne Smrekar, Don Banfield, Domenico Giardini, Matthew Golombek, et al.. Initial results from the InSight mission on Mars. Nature Geoscience, 2020, 13 (3), pp.183-189. ⟨10.1038/s41561-020-0544-y⟩. ⟨hal-02531541⟩
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