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Seasonal Variations of Soil Thermal Conductivity at the InSight Landing Site

Grott, Matthias and Piqueux, S. and Spohn, Tilman and Knollenberg, Jörg and Krause, Christian and Hudson, T.L. and Forget, F. and Lange, L and Müller, Nils and Golombek, M. and Nagihara, S. and Morgan, P. and Murphy, J. and Siegler, M.A. and White, M. and King, S. and Banfield, D. and Smrekar, S. and Banerdt, B. (2023) Seasonal Variations of Soil Thermal Conductivity at the InSight Landing Site. 54th Lunar and Planetary Science Conference (LPSC 2023), 2023-03-13 - 2023-03-17, The Woodlands, Texas.

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Official URL: https://www.hou.usra.edu/meetings/lpsc2023/pdf/1112.pdf

Abstract

Thermal conductivity is a fundamental parameter that governs heat transport in planetary soils. For atmospheric pressures of a few mbar like those typically encountered on Mars a strong dependence of soil thermal conductivity on atmospheric pressure is expected for unconsolidated soil with grain sizes between a few tens of µm and a few mm. In contrast, conduction through the gas phase becomes less important when the soil is cemented or indurated. To study the relative importance of different heat transport mechanisms in the martian soil, measurements at different atmospheric pressures are needed. In this way, the contributions of grain-to-grain conduction as well as conduction through the pore filling gas can be separated. Here we report on the first in-situ long term monitoring of soil thermal conductivity on Mars as obtained by the Heat Flow and Physical Properties Package (HP3) on the InSight mission.

Item URL in elib:https://elib.dlr.de/194626/
Document Type:Conference or Workshop Item (Speech)
Title:Seasonal Variations of Soil Thermal Conductivity at the InSight Landing Site
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Grott, MatthiasUNSPECIFIEDhttps://orcid.org/0000-0002-8613-7096UNSPECIFIED
Piqueux, S.Jet Propulsion Laboratory, California Institute of Technology (Pasadena, CA, 91109)UNSPECIFIEDUNSPECIFIED
Spohn, TilmanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Knollenberg, JörgUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Krause, ChristianUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hudson, T.L.Jet Propulsion Laboratory, Caltech, Pasadena, CA, USAUNSPECIFIEDUNSPECIFIED
Forget, F.LMD, Paris, FranceUNSPECIFIEDUNSPECIFIED
Lange, LLaboratoire de Météorologie Dynamique/Institut Pierre Simon Laplace (LMD/IPSL), Sorbonne Université, CNRS, École Polytechnique, École Normale Supérieure (ENS) , Campus Pierre et Marie Curie BC99, Paris, FranceUNSPECIFIEDUNSPECIFIED
Müller, NilsUNSPECIFIEDhttps://orcid.org/0000-0001-9229-8921UNSPECIFIED
Golombek, M.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIEDUNSPECIFIED
Nagihara, S.Texas Tech Univ.UNSPECIFIEDUNSPECIFIED
Morgan, P.Colorado Geological Survey, Denver, USAUNSPECIFIEDUNSPECIFIED
Murphy, J.virginia institute of technology, blacksburg, va, usaUNSPECIFIEDUNSPECIFIED
Siegler, M.A.Southern Methodist University, Dallas, Texas, USAUNSPECIFIEDUNSPECIFIED
White, M.Southern Methodist University, Dallas, Texas, USAUNSPECIFIEDUNSPECIFIED
King, S.Virginia TechUNSPECIFIEDUNSPECIFIED
Banfield, D.Department of Astronomy, Cornell University, Ithaca, NY, USAUNSPECIFIEDUNSPECIFIED
Smrekar, S.Jet Propulsion Laboratory, California Institute of Technology, PasadenaUNSPECIFIEDUNSPECIFIED
Banerdt, B.Jet Propulsion Laboratory, Pasadena, CA, USAUNSPECIFIEDUNSPECIFIED
Date:2023
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:InSight Mars Regolith Thermal Conductivity
Event Title:54th Lunar and Planetary Science Conference (LPSC 2023)
Event Location:The Woodlands, Texas
Event Type:international Conference
Event Start Date:13 March 2023
Event End Date:17 March 2023
Organizer:Lunar and Planetary Institute (LPI)
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 , Köln-Porz
Institutes and Institutions:Institute of Planetary Research > Planetary Sensor Systems
Institute of Planetary Research > Planetary Physics
Space Operations and Astronaut Training > User center for space experiments (MUSC)
Deposited By: Grott, Dr.rer.nat. Matthias
Deposited On:11 Apr 2023 09:38
Last Modified:24 Apr 2024 20:55

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