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  Subsurface Structure at the InSight Landing Site From Compliance Measurements by Seismic and Meteorological Experiments

Kenda, B., Drilleau, M., Garcia, R. F., Kawamura, T., Murdoch, N., Compaire, N., et al. (2020). Subsurface Structure at the InSight Landing Site From Compliance Measurements by Seismic and Meteorological Experiments. Journal of Geophysical Research: Planets, 125(6): e2020JE006387. doi:10.1029/2020JE006387.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-0A82-B Version Permalink: http://hdl.handle.net/21.11116/0000-0007-0A83-A
Genre: Journal Article

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 Creators:
Kenda, B., Author
Drilleau, M., Author
Garcia, R. F., Author
Kawamura, T., Author
Murdoch, N., Author
Compaire, N., Author
Lognonné, P., Author
Spiga, A., Author
Widmer‐Schnidrig, R., Author
Delage, P., Author
Ansan, V., Author
Vrettos, C., Author
Rodriguez, S., Author
Banerdt, W. B., Author
Banfield, D., Author
Antonangeli, D., Author
Christensen, Ulrich R.1, Author              
Mimoun, D., Author
Mocquet, A., Author
Spohn, T., Author
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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 Abstract: Measurements of ground compliance at the InSight landing site—describing the surface response to pressure loading—are obtained from seismic and meteorological data. Compliance observations show an increase with frequency indicating the presence of a stiffer rock layer beneath the exposed regolith. We performed a Markov chain Monte Carlo inversion to investigate the vertical profile of the elastic parameters down to 20 m below InSight. Compliance was inverted both freely and assuming prior knowledge of compaction in the regolith, and the limitations and strengths of the methods were assessed on the basis of theoretical considerations and synthetic tests. The inverted Young modulus exhibits an increase by a factor of 10–100 over the first 10–15 m, compatible with a structural discontinuity between 0.7 and 7 m. The proposed scheme can be used for joint inversion of other seismic, geological, or mechanical constraints to refine the resulting vertical section.

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Language(s): eng - English
 Dates: 2020
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1029/2020JE006387
 Degree: -

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Title: Journal of Geophysical Research: Planets
  Other : JGR-E
  Abbreviation : J. Geophys. Res. - E
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Washington, D.C. : American Geophysical Union
Pages: - Volume / Issue: 125 (6) Sequence Number: e2020JE006387 Start / End Page: - Identifier: ISSN: 2169-9100
CoNE: https://pure.mpg.de/cone/journals/resource/2169-9100