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A Pre Landing Assessment of Regolith Properties at the InSight Landing Site

Morgan, P. and Grott, M. and Knapmeyer-Endrun, B. and Golombek, M. and Delage, P. and Lognonne, P. and Piqueux, S. and Daubar, I. and Murdoch, N. and Charalambous, C. and Pike, W.T. and Müller, Nils and Hagermann, Axel and Siegler, M. and Lichtenheldt, Roy and Teanby, N. and Kedar, S. (2018) A Pre Landing Assessment of Regolith Properties at the InSight Landing Site. Space Science Reviews, 214 (104). Springer. DOI: 10.1007/s11214-018-0537-y ISSN 0038-6308

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Official URL: https://link.springer.com/article/10.1007/s11214-018-0537-y


This article discusses relevant physical properties of the regolith at the Mars InSight landing site as understood prior to landing of the spacecraft. InSight will land in the northern lowland plains of Mars, close to the equator, where the regolith is estimated to be 3–5 m thick. These investigations of physical properties have relied on data collected from Mars orbital measurements, previously collected lander and rover data, results of studies of data and samples from Apollo lunar missions, laboratory measurements on regolith simulants, and theoretical studies. The investigations include changes in properties with depth and temperature. Mechanical properties investigated include density, grain-size distribution, cohesion, and angle of internal friction. Thermophysical properties include thermal inertia, surface emissivity and albedo, thermal conductivity and diffusivity, and specific heat. Regolith elastic properties not only include parameters that control seismic wave velocities in the immediate vicinity of the Insight lander but also coupling of the lander and other potential noise sources to the InSight broadband seismometer. The related properties include Poisson’s ratio, P- and S-wave velocities, Young’s modulus, and seismic attenuation. Finally, mass diffusivity was investigated to estimate gas movements in the regolith driven by atmospheric pressure changes. Physical properties presented here are all to some degree speculative. However, they form a basis for interpretation of the early data to be returned from the InSight mission.

Item URL in elib:https://elib.dlr.de/122371/
Document Type:Article
Title:A Pre Landing Assessment of Regolith Properties at the InSight Landing Site
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Morgan, P.Colorado Geological Survey, Denver, USAUNSPECIFIED
Grott, M.matthias.grott (at) dlr.deUNSPECIFIED
Knapmeyer-Endrun, B.max planck institute for solar system research, göttingen, germanyUNSPECIFIED
Golombek, M.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIED
Delage, P.Ecole des Ponts ParisTech, Navier-CERMES, Paris, FranceUNSPECIFIED
Lognonne, P.Institut de Physique du Globe, Paris, FranceUNSPECIFIED
Piqueux, S.Jet Propulsion Laboratory, California Institute of Technology (Pasadena, CA, 91109)UNSPECIFIED
Daubar, I.Jet Propulsion Laboratory, California Institute of Technology, PasadenaUNSPECIFIED
Murdoch, N.Institut Supérieur de l’Aéronautique et de l’Espace (ISAE ‐ SUPAERO), Université de Toulouse, FranceUNSPECIFIED
Charalambous, C.Department of Electrical and Electronic Engineering, Imperial College, South Kensington Campus, London, UKUNSPECIFIED
Pike, W.T.Department of Electrical and Electronic Engineering, Imperial College, London SW7 2AZ, UKUNSPECIFIED
Müller, NilsNils.Mueller (at) dlr.deUNSPECIFIED
Hagermann, Axelaxalhagermann (at) stir.ac.ukUNSPECIFIED
Siegler, M.Jet Propulsion Laboratory, California Institute of Technology, PasadenaUNSPECIFIED
Lichtenheldt, RoyRoy.Lichtenheldt (at) dlr.dehttps://orcid.org/0000-0002-2539-4910
Teanby, N.School of Earth Sciences, University of Bristol, Bristol, UKUNSPECIFIED
Kedar, S.jet propulsion laboratory, pasadena, ca, usaUNSPECIFIED
Journal or Publication Title:Space Science Reviews
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s11214-018-0537-y
Keywords:Mars · Regolith · Physical properties · InSight landing site
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):Project InSight HP3
Location: Berlin-Adlershof , Oberpfaffenhofen
Institutes and Institutions:Institute of Planetary Research > Planetary Physics
Institute of Planetary Research > Asteroids and Comets
Institute of System Dynamics and Control > Space System Dynamics
Deposited By: Grott, Dr.rer.nat. Matthias
Deposited On:29 Oct 2018 10:35
Last Modified:01 Sep 2019 03:00

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