P012
Geology and Geophysics of Active Satellites and Small Bodies
Session ID#: 157262
Session Description:
This is a session of contributed and invited papers on the geology and geophysics of active or recently active satellites and dwarf planets, including small exoplanets. Research is progressing rapidly due to the stream of new spacecraft and Earth-based telescope data. Juno is orbiting Jupiter and observing the Galilean satellites, and the James Webb Space Telescope has been successfully deployed. Additionally, Europa Clipper and JUICE, exciting future missions to the Jovian system, are currently under construction. Papers are welcomed on processes that affect the interiors of individual bodies, including Ceres and Vesta, as well as the surface expressions they produce. Included are the effects and chronology of internal heating (tidal dissipation and radioactivity), structural evolution (e.g., differentiation), tides, and other geophysical and geological processes (e.g., volcanism).
Index Terms:
5455 Origin and evolution [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
5475 Tectonics [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
5480 Volcanism [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
6218 Jovian satellites [PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS]
Primary Convener: Ashley Gerard Davies, NASA Jet Propulsion Laboratory, Pasadena, CA, United States
Conveners: Thomas B McCord, Bear Fight Institute, Winthrop, WA, United States; Planetary Science Institute Seattle, Seattle, WA, United States and Katherine de Kleer, California Institute of Technology, Pasadena, CA, United States
Powering Fire and Ice with Iron: Strong Metallic Core Dissipation Within the Galilean Satellites (Invited) (1048370)
Samuel M Howell1, Steve Vance1, Bruce G Bills2, Mohit Melwani Daswani1, Marshall John Styczinski1 and Hamish Hay1, (1)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Estimates for Mimas’ Moment of Inertia, Heat Flux Distribution, and Interior Structure from its Long-Wavelength Topography (1053892)
Szilard Gyalay, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States and Francis Nimmo, University of California-Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States
Revisiting Constraints on Ganymede's Dynamo from Spacecraft Magnetic Field Data (1055916)
Alain Plattner, University of Alabama, Geological Sciences, Tuscaloosa, AL, United States, Alyssa Mills, University of Alabama, Geological Sciences, Tuscaloosa, United States, Catherine Johnson, Planetary Science Institute, Tucson, United States; University of British Columbia, Vancouver, Canada, Marshall John Styczinski, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States; NASA Postdoctoral Program Fellow, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States and Steve Vance, Jet Propulsion Laboratory, Pasadena, United States
Transient, Brine-Mobilized Flows on Vesta and Ceres (1060666)
Jennifer E. C. Scully1, Michael Poston2, Elizabeth Carey3, Samantha Rose Baker4, Julie C Castillo-Rogez5, Carol A Raymond1 and Lauren Mc Keown1, (1)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (2)Southwest Research Institute, San Antonio, TX, United States, (3)Airborne Snow Observatories Inc., Mammoth Lakes, CA, United States, (4)California Institute of Technology, Pasadena, United States, (5)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Piecing Together the Chaos Puzzle: Preliminary Results and Implications of Europan Block Identification Using Machine Learning (1100254)
Alyssa Mills1,2, Ethan Duncan2,3, Conor A Nixon4, Douglas Trent5, John Santerre3, Ian Neidel6, Andrew Larsen7 and Catherine C Walker8, (1)Baylor University, Waco, United States, (2)NASA Goddard Space Flight Center, Greenbelt, United States, (3)University of California Berkeley, School of Information, Berkeley, United States, (4)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (5)NASA Langley Research Center, Hampton, United States, (6)Yale University, New Haven, United States, (7)Southern Methodist University, Dallas, United States, (8)NASA Headquarters, Washington, United States
Regional study of Enceladus’ photometry (1115034)
Ines Belgacem1, Jessica Hogan1,2 and Thomas Cornet3, (1)European Space Agency, Villanueva De La Can, Spain, (2)Queen Mary, University of London, London, United Kingdom, (3)Aurora Technology for ESA, Villanueva de la Cañada, Spain
Ejecta Blanket Thickness from Large Complex Craters on Ceres (1117237)
Pedro Montalvo1, Hephzibah Christopher2, Masatoshi Hirabayashi3, Caleb Fassett4 and David T King Jr1, (1)Auburn University, Department of Geosciences, Auburn, AL, United States, (2)Auburn University, Department of Geosciences, Auburn, United States, (3)University of Colorado at Boulder, Boulder, United States, (4)Applied Physics Laboratory Johns Hopkins, Laurel, United States
Spherical Harmonic decomposition and interpretation of the Shapes of the Saturnian small inner moons (1149625)
Nicolas Rambaux1,2, Valery Lainey1, Nicholas J Cooper3 and Qingfeng Zhang4, (1)IMCCE/Observatoire de Paris, Paris, France, (2)Sorbonne University, Paris, France, (3)QMUL, University of London, London, United Kingdom, (4)Department of Computer Science, Guangzhou, China
Ganymede During a Cassini State Transition (1164820)
Brynna Grace Downey, University of California Santa Cruz, Santa Cruz, United States, Francis Nimmo, University of California-Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States and Bruce G Bills, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Determination of the Interior Structure of Europa through Joint Inversion of Gravity and Magnetic Induction Data (1166690)
Flavio Petricca1,2, Antonio Genova1, Julie C Castillo2, Mohit Melwani Daswani2, Samuel M Howell2, Marshall John Styczinski2, Francis Nimmo3, William B McKinnon4 and Giorgio Spada5, (1)Sapienza University of Rome, Department of Mechanical and Aerospace Engineering, Rome, Italy, (2)NASA Jet Propulsion Laboratory, Pasadena, United States, (3)University of California-Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, (4)Washington University in Saint Louis, Saint Louis, MO, United States, (5)Università degli Studi di Urbino “Carlo Bo”, Dipartimento di Scienze di Base e Fondamenti, Urbino, Italy
The role of non-water-ice hydration in Ceres’ near-surface regolith (1167963)
Margaret E Landis1, Julie C Castillo-Rogez2, Thomas H Prettyman3 and Naoyuki Yamashita3, (1)Laboratory for Atmospheric and Space Physics, Boulder, CO, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (3)Planetary Science Institute, Tucson, AZ, United States
Global Temperature Modeling of (24) Themis and Implications for Volatile Stability (1170923)
Kya Sorli, University of Colorado at Boulder, Astrophysical & Planetary Sciences Department, Boulder, United States, Margaret E Landis, University of Colorado at Boulder, Laboratory for Atmospheric and Space Physics, Boulder, CO, United States and Paul Ottinger Hayne, University of Colorado, Boulder, Astrophysical and Planetary Sciences Department, Boulder, CO, United States
Volumetric determination of metals and hydrogenous minerals in meteorites (1190984)
Jacob LaManna1, Allan H Treiman2, Daniel Seth Hussey1, Isabella DeClue3 and Lawrence M Anovitz4, (1)National Institute of Standards and Technology Gaithersburg, Gaithersburg, MD, United States, (2)Lunar & Planetary Inst, Houston, TX, United States, (3)University of Chicago, Chicago, United States, (4)ORNL U Tennessee, Oak Ridge, TN, United States
The possibility of a subsurface magma ocean on Io (1200202)
Yoshinori Miyazaki, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States and David J. Stevenson, California Institute of Technology, Pasadena, United States
Io's Tidal Dissipation and Rotation Rate (1202426)
Jacob N. H. Abrahams1, Francis Nimmo2, Ian Garrick-Bethell3, Bruce G Bills4 and Carver Jay Bierson3, (1)University of California Santa Cruz, Santa Cruz, CA, United States, (2)University of California-Santa Cruz, Earth and Planetary Sciences, Santa Cruz, CA, United States, (3)University of California Santa Cruz, Santa Cruz, United States, (4)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
