Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/28181
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: A Pre-Landing Assessment of Regolith Properties at the InSight Landing Site
Author(s): Morgan, Paul
Grott, Matthias
Knapmeyer-Endrun, Brigitte
Golombek, Matt
Delage, Pierre
Lognonné, Philippe
Piqueux, Sylvain
Daubar, Ingrid
Murdoch, Naomi
Charalambous, Constantinos
Pike, William T
Müller, Nils
Hagermann, Axel
Siegler, Matt
Lichtenheldt, Roy
Contact Email: axel.hagermann@stir.ac.uk
Keywords: Space and Planetary Science
Astronomy and Astrophysics
Issue Date: 1-Sep-2018
Date Deposited: 8-Nov-2018
Citation: Morgan P, Grott M, Knapmeyer-Endrun B, Golombek M, Delage P, Lognonné P, Piqueux S, Daubar I, Murdoch N, Charalambous C, Pike WT, Müller N, Hagermann A, Siegler M & Lichtenheldt R (2018) A Pre-Landing Assessment of Regolith Properties at the InSight Landing Site. Space Science Reviews, 214 (6), Art. No.: 104. https://doi.org/10.1007/s11214-018-0537-y
Abstract: 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.
DOI Link: 10.1007/s11214-018-0537-y
Rights: This item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. This is a post-peer-review, pre-copyedit version of an article published in Space Science Reviews. The final authenticated version is available online at: https://doi.org/10.1007/s11214-018-0537-y
Notes: Additional co-authors: Nick Teanby and Sharon Kedar
Licence URL(s): https://storre.stir.ac.uk/STORREEndUserLicence.pdf

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