Regions of interest on Ganymede's and Callisto's surfaces as potential targets for ESA's JUICE mission

Creators: Stephan, K.; Roatsch, T.; Tosi, F.; Matz, K.-D.; Kersten, E.; Wagner, R.; Molyneux, P.; Palumbo, P.; Poulet, F.; Hussmann, H.; Barabash, S.; Bruzzone, L.; Dougherty, M.; Gladstone, R.; Gurvits, L. I.; Hartogh, P.; Iess, L.; Wahlund, J.-E.; Wurz, P.; Witasse, O.; Grasset, O.; Altobelli, N.; Carter, J.; Cavalié, T.; Della Corte, V.; Filacchione, G.; Galli, A.; Galluzzi, V.; Gwinner, K.; Hauber, E.; Jaumann, R.; Krohn, K.; Langevin, Y.; Lucchetti, A.; Migliorini, A.; Piccioni, G.; Solomonidou, A.; Stark, A.; Tobie, G.; Tubiana, C.; Vallat, C.; Van Hoolst, T.; JUICE SWT Team

Abstract

The JUpiter Icy moons Explorer (JUICE) will investigate Ganymede's and Callisto's surfaces and subsurfaces from orbit to explore the geologic processes that have shaped and altered their surfaces by impact, tectonics, possible cryovolcanism, space weathering due to micrometeorites, radiation and charged particles as well as explore the structure and properties of the icy crust and liquid shell (Grasset et al., 2013). The best possible synergy of the JUICE instruments is required to answer the major science objective of this mission and to fully exploit the potential of the JUICE mission. Therefore, the JUICE team is aiming to define high priority targets on both Ganymede's and Callisto's surfaces to support the coordination of the planning activities by the individual instrument teams. Based on the science objectives of the JUICE mission and the most recent knowledge of Ganymede's and Callisto's geologic evolution we propose a collection of Regions of Interest (RoIs), which characterize surface features and terrain types representing important traces of geologic processes, from past and/or present cryovolcanic and tectonic activity to space weathering processes, which are crucial to understand the geologic evolution of Ganymede and Callisto. The proposed evaluation of RoIs is based on their scientific importance as well as on the opportunities and conditions to observe them during the currently discussed mission profile.

Additional Information

© 2021 The Authors. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/. Received 29 September 2020, Revised 23 August 2021, Accepted 24 August 2021, Available online 2 September 2021. The authors want to thank Geoffrey Collins and an anonymous reviewer for significantly improving this manuscript with their careful reviews. The authors also gratefully acknowledge very helpful discussions with all JUICE working groups and the continuous support by the JUICE Science Operation Center (SOC) at ESAC. Italian co-authors acknowledge support under the ASI-INAF agreement 2018-25-HH.0. The French co-authors acknowledge the support from CNES. The mission trajectory used for this work is based on JUICE SPICE Kernel Dataset CREMA 3.0. (ESA SPICE Service, JUICE Operational SPICE Kernel Dataset). The global imaging maps produced and provided by USGS (available at https://astrogeology.usgs.gov) from Voyager and Galileo ISS and SSI images were used a baseline for this work. CRediT authorship contribution statement: K. Stephan: Writing – original draft, Methodology, Investigation, Writing – review & editing, Conceptualization. T. Roatsch: Project administration, Funding acquisition, Writing – review & editing. F. Tosi: Project administration, Conceptualization, Writing – review & editing. K.-D. Matz: Software, Methodology, Visualization, Formal analysis. E. Kersten: Formal analysis, Visualization, Investigation, Writing – review & editing. R. Wagner: Writing – review & editing, Visualization, Investigation. P. Molyneux: Formal analysis, Visualization, Writing – review & editing. P. Palumbo: Project administration, Validation, Writing – review & editing. F. Poulet: Project administration, Validation, Writing – review & editing. H. Hussmann: Project administration, Validation, Writing – review & editing. S. Barabash: Project administration, Writing – review & editing. L. Bruzzone: Project administration, Validation, Writing – review & editing. M. Dougherty: Project administration, Writing – review & editing. R. Gladstone: Project administration, Validation, Writing – review & editing. L.I. Gurvits: Project administration, Validation, Writing – review & editing. P. Hartogh: Project administration, Validation, Writing – review & editing. L. Iess: Project administration, Writing – review & editing. J.-E. Wahlund: Project administration, Writing – review & editing. P. Wurz: Project administration, Validation, Writing – review & editing. O. Witasse: Project administration, Validation, Writing – review & editing. O. Grasset: Project administration, Writing – review & editing. N. Altobelli: Software, Data curation, Resources. J. Carter: Formal analysis, Visualization. T. Cavalié: Validation, Writing – review & editing. E. d'Aversa: Formal analysis, Visualization, Investigation. V. Della Corte: Formal analysis, Visualization, Investigation. G. Filacchione: Conceptualization, Writing – review & editing. A. Galli: Formal analysis, Investigation, Visualization, Writing – review & editing. V. Galluzzi: Writing – review & editing. K. Gwinner: Writing – review & editing. E. Hauber: Investigation, Writing – review & editing. R. Jaumann: Project administration, Writing – review & editing. K. Krohn: Formal analysis, Visualization. Y. Langevin: Project administration, Writing – review & editing. A. Lucchetti: Writing – review & editing. A. Migliorini: Writing – review & editing. G. Piccioni: Project administration, Writing – review & editing. A. Solomonidou: Writing – review & editing, Investigation. A. Stark: Formal analysis, Investigation. G. Tobie: Writing – review & editing. C. Tubiana: Formal analysis, Visualization. C. Vallat: Software, Data curation, Resources. T. Van Hoolst: Writing – review & editing. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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