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Constraints on the shallow elastic and anelastic structure of Mars from InSight seismic data

  • P. Lognonné*
  • , W. B. Banerdt
  • , W. T. Pike
  • , D. Giardini
  • , U. Christensen
  • , R. F. Garcia
  • , T. Kawamura
  • , S. Kedar
  • , B. Knapmeyer-Endrun
  • , L. Margerin
  • , F. Nimmo
  • , M. Panning
  • , B. Tauzin
  • , J. R. Scholz
  • , D. Antonangeli
  • , S. Barkaoui
  • , E. Beucler
  • , F. Bissig
  • , N. Brinkman
  • , M. Calvet
  • S. Ceylan, C. Charalambous, P. Davis, M. van Driel, M. Drilleau, L. Fayon, R. Joshi, B. Kenda, A. Khan, M. Knapmeyer, V. Lekic, J. McClean, D. Mimoun, N. Murdoch, L. Pan, C. Perrin, B. Pinot, L. Pou, S. Menina, S. Rodriguez, C. Schmelzbach, N. Schmerr, D. Sollberger, A. Spiga, S. Stähler, A. Stott, E. Stutzmann, S. Tharimena, R. Widmer-Schnidrig, F. Andersson, V. Ansan, C. Beghein, M. Böse, E. Bozdag, J. Clinton, I. Daubar, P. Delage, N. Fuji, M. Golombek, M. Grott, A. Horleston, K. Hurst, J. Irving, A. Jacob, J. Knollenberg, S. Krasner, C. Krause, R. Lorenz, C. Michaut, R. Myhill, T. Nissen-Meyer, J. ten Pierick, A. C. Plesa, C. Quantin-Nataf, J. Robertsson, L. Rochas, M. Schimmel, S. Smrekar, T. Spohn, N. Teanby, J. Tromp, J. Vallade, N. Verdier, C. Vrettos, R. Weber, D. Banfield, E. Barrett, M. Bierwirth, S. Calcutt, N. Compaire, C. L. Johnson, D. Mance, F. Euchner, L. Kerjean, G. Mainsant, A. Mocquet, J. A. Rodriguez Manfredi, G. Pont, P. Laudet, T. Nebut, S. de Raucourt, O. Robert, C. T. Russell, A. Sylvestre-Baron, S. Tillier, T. Warren, M. Wieczorek, C. Yana, P. Zweifel
*Bu çalışma için yazışmadan sorumlu yazar
  • Université Paris Cité
  • Institut universitaire de France
  • Jet Propulsion Laboratory, California Institute of Technology
  • Imperial College London
  • Swiss Federal Institute of Technology Zurich
  • Max Planck Institute for Solar System Research
  • Université Fédérale Toulouse Midi-Pyrénées
  • University of Cologne
  • Centre d'Etude Spatiale des Rayonnements
  • University of California at Santa Cruz
  • Universite Claude Bernard Lyon 1
  • Sorbonne Université
  • Nantes Université
  • University of California at Los Angeles
  • Space Exploration Institute
  • University of Zurich
  • German Aerospace Center
  • University of Maryland, College Park
  • Ecole Normale Supérieure
  • University of Stuttgart
  • Colorado School of Mines
  • CNRS
  • University of Bristol
  • Princeton University
  • Johns Hopkins University Applied Physics Laboratory
  • École normale supérieure de Lyon
  • University of Oxford
  • Centre National d’Etudes Spatiales
  • ICTJA-CSIC
  • International Space Science Institute
  • Technical University of Kaiserslautern
  • NASA Marshall Space Flight Center
  • Cornell University
  • University of British Columbia
  • Planetary Science Institute
  • Instituto Nacional de Tecnica Aeroespacial
  • Université Côte d'Azur

Araştırma sonucu: Dergiye katkıMakalebilirkişi

275 Atıf (Scopus)

Özet

Mars’s seismic activity and noise have been monitored since January 2019 by the seismometer of the InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) lander. At night, Mars is extremely quiet; seismic noise is about 500 times lower than Earth’s microseismic noise at periods between 4 s and 30 s. The recorded seismic noise increases during the day due to ground deformations induced by convective atmospheric vortices and ground-transferred wind-generated lander noise. Here we constrain properties of the crust beneath InSight, using signals from atmospheric vortices and from the hammering of InSight’s Heat Flow and Physical Properties (HP3) instrument, as well as the three largest Marsquakes detected as of September 2019. From receiver function analysis, we infer that the uppermost 8–11 km of the crust is highly altered and/or fractured. We measure the crustal diffusivity and intrinsic attenuation using multiscattering analysis and find that seismic attenuation is about three times larger than on the Moon, which suggests that the crust contains small amounts of volatiles.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)213-220
Sayfa sayısı8
DergiNature Geoscience
Hacim13
Basın numarası3
DOI'lar
Yayın durumuYayınlandı - 1 Mar 2020
Harici olarak yayınlandıEvet

Bibliyografik not

Publisher Copyright:
© 2020, The Author(s), under exclusive licence to Springer Nature Limited.

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