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The mechanical properties of the Martian soil at the InSight landing site

Delage, P. and Marteau, E. and Vrettos, C. and Golombek, M. and Asan-Mangold, V. and Banerdt, B. and Grott, Matthias and Hurst, K. and Lognonne, P. and Murdoch, N. and Piqueux, S. and Schmelzbach, C. and Spohn, Tilman and Warner, N. and Widmer-Schnidrig, Rudolf and Brinkmann, Nienke and Caicedo-Hormaza, B. and Castillo-Betancourt, J.P and Edme, P. and Kedar, S. and Lange, L. and Lemmon, M. and Mueller, N. and Onodera, K and Robertsson, J. and Solberger, D. and Stähler, S. and Verdier, N and Williams, N.R. (2022) The mechanical properties of the Martian soil at the InSight landing site. International Conference on Soil Mechanics and Geotechnical Engineering, 2022-05-01 - 2022-05-05, Sydney.

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The InSight mission is a NASA geophysical mission aimed at better understanding the structure of Mars and of the other rocky plan-ets of the solar system. To do so, various instruments are used, including a very sensitive seismometer (SEIS) and a dynamic self-penetrating heat probe (HP3) that have been placed on the Mars surface by the Instrument Deployment Arm (IDA). Besides geophys-ical data (which have definitely enriched and completed existing knowledge on the structure of Mars), the InSight instruments, togeth-er with orbiter observations and tests carried out on the soil with the IDA, have significantly increased the knowledge of the geologi-cal and geotechnical characteristics of the surface material at the InSight site, which is made up of a basaltic sand. In-situ data were also successfully compared with terrestrial previous estimates from terrestrial lab tests, carried out on various soil simulants. Small strain (elastic) parameters at small strains were derived from wave velocity measurements between the self-penetrating probe and the seismometer. Strength data were derived from both IDA operations and penetration data. The soil includes some pebbles within a somewhat cohesive sandy matrix, limiting the heat probe penetration to only 40 cm length. Thermal data were also obtained, allowing for some thermo-elastic modelling of the effect of the Phobos (one of the “Moons” of Mars) eclipses. Elastic data were also derived from the effects of wind on the ground, detected by SEIS.

Item URL in elib:https://elib.dlr.de/148668/
Document Type:Conference or Workshop Item (Speech)
Title:The mechanical properties of the Martian soil at the InSight landing site
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Delage, P.Ecole des Ponts ParisTech, Navier-CERMES, Paris, FranceUNSPECIFIEDUNSPECIFIED
Marteau, E.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIEDUNSPECIFIED
Vrettos, C.Division of Soil Mechanics and Foundation Engineering, Technical University of Kaiserslautern, Kaiserslautern, GermanyUNSPECIFIEDUNSPECIFIED
Golombek, M.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, USAhttps://orcid.org/0000-0002-1928-2293UNSPECIFIED
Asan-Mangold, V.Université́ de Nantes, CNRS, Nantes, FranceUNSPECIFIEDUNSPECIFIED
Banerdt, B.Jet Propulsion Laboratory, USAUNSPECIFIEDUNSPECIFIED
Grott, MatthiasUNSPECIFIEDhttps://orcid.org/0000-0002-8613-7096UNSPECIFIED
Hurst, K.JPL, California Institute of Technology, Pasadena, CA, USAUNSPECIFIEDUNSPECIFIED
Lognonne, P.Institut de Physique du Globe, Paris, FranceUNSPECIFIEDUNSPECIFIED
Piqueux, S.Jet Propulsion Laboratory, California Institute of Technology (Pasadena, CA, 91109)UNSPECIFIEDUNSPECIFIED
Schmelzbach, C.Institute of Geophysics, ETH Zurich, Zurich, SwitzerlandUNSPECIFIEDUNSPECIFIED
Warner, N.jet propulsion laboratory, california institute of technology, pasadena ca 91109, usaUNSPECIFIEDUNSPECIFIED
Widmer-Schnidrig, RudolfInstitut für Geophysik, Universität Stuttgart, Stuttgart, GermanyUNSPECIFIEDUNSPECIFIED
Caicedo-Hormaza, B.Universidad de los Andes, Bogota, ColombiaUNSPECIFIEDUNSPECIFIED
Castillo-Betancourt, J.PUniversidad de los Andes, Bogota, ColombiaUNSPECIFIEDUNSPECIFIED
Kedar, S.jet propulsion laboratory, pasadena, ca, usaUNSPECIFIEDUNSPECIFIED
Lange, L.Sorbonne Université, Laboratoire de Météorologie Dynamique, CNRS, Paris, FranceUNSPECIFIEDUNSPECIFIED
Lemmon, M.Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USAUNSPECIFIEDUNSPECIFIED
Mueller, N.UNSPECIFIEDhttps://orcid.org/0000-0001-9229-8921UNSPECIFIED
Onodera, KInstitut de Physique du Globe de Paris, Paris, FranceUNSPECIFIEDUNSPECIFIED
Robertsson, J.ETH Swiss Federal Institute of Technology, Zurich, SwitzerlandUNSPECIFIEDUNSPECIFIED
Stähler, S.Institute of Geophysics, ETH Zurich, SwitzerlandUNSPECIFIEDUNSPECIFIED
Verdier, NCNES French National Center for Space StudiesUNSPECIFIEDUNSPECIFIED
Williams, N.R.Jet Propulsion Laboratory, NASA - California Institute of Technology, Pasadena, CA, USAUNSPECIFIEDUNSPECIFIED
Date:May 2022
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:InSight Mars Regolith Mechanische Bodeneigenschaften
Event Title:International Conference on Soil Mechanics and Geotechnical Engineering
Event Location:Sydney
Event Type:international Conference
Event Start Date:1 May 2022
Event End Date:5 May 2022
Organizer:Australian Geomechanics Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project InSight - HP3
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Sensor Systems
Institute of Planetary Research > Planetary Physics
Deposited By: Grott, Dr.rer.nat. Matthias
Deposited On:08 Sep 2022 11:29
Last Modified:24 Apr 2024 20:46

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