Planned Products of the Mars Structure Service for the InSight Mission to Mars

Research areas:
Year:
2017
Authors:
  • Mark P. Panning
  • Philippe Lognonne
  • W. Bruce Banerdt
  • Raphael Garcia
  • Matthew Golombek
  • Sharon Kedar
  • Brigitte Knapmeyer-Endrun
  • Antoine Mocquet
  • Nick A. Teanby
  • Jeroen Tromp
  • Renee Weber
  • Éric Beucler
  • Jean-Francois Blanchette-Guertin
  • Ebru Bozdag
  • Tamara Gudkova
  • Stefanie Hempel
  • Amir Khan
  • Vedran Lekic
  • Naomi Murdoch
  • Ana-Catalina Plesa
  • Atillio Rivoldini
  • Nicholas Schmerr
  • Youyi Ruan
  • Olivier Verhoeven
  • Chao Gao
  • Ulrich Christensen
  • John Clinton
  • Veronique Dehant
  • Domenico Giardini
  • David Mimoun
  • W. Thomas Pike
  • Sue Smrekar
  • Mark Wieczorek
  • Martin Knapmeyer
  • James Wookey
Journal:
SPACE SCIENCE REVIEWS
Volume:
211
Number:
1-4
Pages:
611-650
Month:
October
ISSN:
0038-6308
Abstract:
The InSight lander will deliver geophysical instruments to Mars in 2018,
including seismometers installed directly on the surface (Seismic
Experiment for Interior Structure, SEIS). Routine operations will be
split into two services, the Mars Structure Service (MSS) and Marsquake
Service (MQS), which will be responsible, respectively, for defining the
structure models and seismicity catalogs from the mission. The MSS will
deliver a series of products before the landing, during the operations,
and finally to the Planetary Data System (PDS) archive. Prior to the
mission, we assembled a suite of a priori models of Mars, based on
estimates of bulk composition and thermal profiles. Initial models
during the mission will rely on modeling surface waves and
impact-generated body waves independent of prior knowledge of structure.
Later modeling will include simultaneous inversion of seismic
observations for source and structural parameters. We use Bayesian
inversion techniques to obtain robust probability distribution functions
of interior structure parameters. Shallow structure will be
characterized using the hammering of the heatflow probe mole, as well as
measurements of surface wave ellipticity. Crustal scale structure will
be constrained by measurements of receiver function and broadband
Rayleigh wave ellipticity measurements. Core interacting body wave
phases should be observable above modeled martian noise levels, allowing
us to constrain deep structure. Normal modes of Mars should also be
observable and can be used to estimate the globally averaged 1D
structure, while combination with results from the InSight radio science
mission and orbital observations will allow for constraint of deeper
structure.