Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
EPSC Abstracts
Vol.14, EPSC2020-418, 2020
https://doi.org/10.5194/epsc2020-418
Europlanet Science Congress 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Thermal conductivity of salt-bearing ice analogs in Jovian moons to support future JUICE mission.

Cristóbal González Díaz1, Guillermo M. Muñoz Caro1, Héctor Carrascosa de Lucas1, Sofía Aparicio Secanellas2, Margarita González Hernández2, José J. Anaya Velayos2, Guillermo Anaya Catalán2, Olga Prieto-Ballesteros1,3, Victoria Muñoz-Iglesias1,3, Oscar Ercilla Herrero1, Javier Sánchez-Benítez3,4, Alberto Rivera-Calzada5, Rosario Lorente6, Nicolas Altobelli6, Anezina Solomonidou6, Claire Vallat6, and Olivier Witasse7
Cristóbal González Díaz et al.
  • 1Centro de Astrobiología (CAB, INTA-CSIC), Astrophysics, Spain (cgonzalez@cab.inta-csic.es)
  • 2Instituto de Tecnologías Físicas y de la Información ITEFI-CSIC, Madrid, Spain
  • 3MALTA-Consolider Team, Spain
  • 4Departamento de Química Física, Universidad Complutense de Madrid, Madrid, Spain
  • 5GFMC, Universidad Complutense de Madrid, Madrid, Spain
  • 6European Space Agency (ESA), ESAC, Madrid, Spain
  • 7European Space Agency (ESA), European Space Research and Technology Centre (ESTEC), Noordwijk, Netherlands

Thermal properties of frozen salt solutions are crucial to interpret the JUpiter ICy moons Explorer (JUICE) (ESA) and Europa Clipper (NASA) missions, which will be launched in the upcoming years to make detailed observations of the giant gaseous planet Jupiter and three of its largest moons (Ganymede, Callisto, and Europa) due to the scarcity of experimental measurements.

Therefore, we have conducted a set of experiments to measure and study the thermal conductivity and calorimetry of macroscopic frozen salt solutions of particular interest in these regions, including Na-chloride (NaCl), Mg-sulphate (MgSO4), sodium sulphate (Na2SO4), and Magnesium chloride (MgCl2). A climatic chamber has been used to mimic the cryogenic conditions in the Jovian Icy Moons. Measurements were performed at atmospheric pressure and temperatures from 0 to -70ºC. Temperature and thermal conductivity were measured during the course of the experiments. A side effect of these measurements is that they served to spot phase changes in the ice mixtures. A small sample of the liquid salt-water solution was set aside for the calorimetry measurements.

These experiments and the measurements of thermal conductivity and calorimetry will be valuable to constrain the chemical composition, physical state, and temperature of the upper layers of the icy crusts of Ganymede, Callisto, and Europa (please see abstracts EPSC Muñoz Iglesias et al. 2020 and EPSC Solomonidou et al. 2020).

How to cite: González Díaz, C., M. Muñoz Caro, G., Carrascosa de Lucas, H., Aparicio Secanellas, S., González Hernández, M., Anaya Velayos, J. J., Anaya Catalán, G., Prieto-Ballesteros, O., Muñoz-Iglesias, V., Ercilla Herrero, O., Sánchez-Benítez, J., Rivera-Calzada, A., Lorente, R., Altobelli, N., Solomonidou, A., Vallat, C., and Witasse, O.: Thermal conductivity of salt-bearing ice analogs in Jovian moons to support future JUICE mission., Europlanet Science Congress 2020, online, 21 September–9 Oct 2020, EPSC2020-418, https://doi.org/10.5194/epsc2020-418, 2020

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