P52B:
Judging an Ocean World by Its Cover: Geological and Chemical Processes on Icy Surfaces II

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Session ID#: 35347

Session Description:
This session will focus on the physical and chemical processes affecting icy surfaces, in particular the icy satellites of the outer Solar System. What geologic processes shape and continue to take place on the surfaces of icy worlds such as Europa and Enceladus, and what can we learn from appropriate terrestrial analogs? How do external (sunlight, radiation) and internal (convection, heating) processes compete to determine the morphology and appearance of icy surfaces? A particular focus will be on modification of the surfaces of ocean worlds by exogenic processes, and on surface / subsurface material exchange. External modification includes photolysis, magnetospheric particle interactions, and micrometeoroids. Understanding exogenous processing, as well as how processes that affect the surface continue into the subsurface, helps us better understand the evolution of ocean worlds. This session will bring together theoretical and laboratory work with remote sensing observations, and field work at terrestrial analog cryosphere locations.
Primary Convener:  Cynthia B Phillips, JPL/NASA/Caltech, Pasadena, CA, United States
Conveners:  Charles Hibbitts, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States and Chris Paranicas, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
Chairs:  Charles Hibbitts1, Cynthia B Phillips2 and Chris Paranicas1, (1)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States(2)JPL/NASA/Caltech, Pasadena, CA, United States
OSPA Liaison:  Cynthia B Phillips, JPL/NASA/Caltech, Pasadena, CA, United States

Cross-Listed:
  • EP - Earth and Planetary Surface Processes
Index Terms:

0770 Properties [CRYOSPHERE]
5422 Ices [PLANETARY SCIENCES: SOLID SURFACE PLANETS]
6218 Jovian satellites [PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS]
6280 Saturnian satellites [PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS]

Abstracts Submitted to this Session:

Small Moves, NUI. Small Moves: Beginning to Investigate Biogeochemical Exchange From the Seafloor to the Exterior of an Ice-Covered Ocean (Invited) (259367)
Christopher R German, Woods Hole Oceanographic Institution, Woods Hole, MA, United States, Antje Boetius, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, HGF-MPG Group for Deep Sea Ecology and Technology, Bremerhaven, Germany and Scientific Teams of PS86 and PS101
Radiation processing of organics and biological materials exposed to ocean world surface conditions. (Invited) (211177)
Kevin P Hand, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States and Robert W Carlson, Jet Propulsion Laboratory, Pasadena, CA, United States
Europa’s surface radiation environment and considerations for in-situ sampling and biosignature detection (Invited) (212166)
Tom Andre Nordheim, Jet Propulsion Laboratory, Pasadena, CA, United States, Chris Paranicas, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States and Kevin P Hand, Jet Propulsion Laboratory, Pasadena, United States
Unraveling the Reaction Chemistry of Icy Ocean World Surfaces (236821)
Reggie Hudson1, Mark J Loeffler1 and Perry Gerakines2, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)NASA Goddard Space Flight Center, Greenbelt, United States
Understanding the Cryosphere of Europa Using Imaging Spectroscopy (274616)
Diana L Blaney1, Robert O Green2, Charles Hibbitts3, Roger Nelson Clark4, James B Dalton5, Ashley Gerard Davies1, Yves Langevin6, Matthew M Hedman7, Jonathan I Lunine8, Thomas B McCord9, Scott L Murchie10, Chris Paranicas3, Frank P Seelos3, Jason M Soderblom11 and Serina Diniega1, (1)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, (2)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (3)Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, (4)Planetary Science Institute, Tucson, United States, (5)Self Employed, Washington, United States, (6)CNRS, Paris Cedex 16, France, (7)University of Idaho, Physics, Moscow, United States, (8)Cornell University, Department of Astronomy, Ithaca, NY, United States, (9)Bear Fight Institute, Winthrop, United States, (10)Johns Hopkins University Applied Physics Laboratory, Laurel, United States, (11)MIT, Cambridge, United States
Detecting Isotopic Signatures and Measuring Isotopic Ratios on Solid Icy Surfaces:Implications for Origin and Evolution (268691)
Roger Nelson Clark, Planetary Science Institute, Tucson, United States, Robert Hamilton Brown, Univ Arizona, Tucson, AZ, United States, Gregg A Swayze, U.S. Geological Survey, Denver, CO, United States and Dale P Cruikshank, NASA Ames Research Center, Mountain View, CA, United States
A closer look at Galileo Thermal data from a Possible Plume Source North of Pwyll, Europa (278423)
Julie A Rathbun, Planetary Science Institute Tucson, Tucson, AZ, United States and John R Spencer, Southwest Research Institute, Boulder, United States
Surface Modification and Surface - Subsurface Exchange Processes on Europa (229031)
Cynthia B Phillips, JPL/NASA/Caltech, Pasadena, CA, United States, Jamie Molaro, Planetary Science Institute, Pasadena, CA, United States and Kevin P Hand, Jet Propulsion Laboratory, Pasadena, United States
Extensional terrain formation on Europa and Ganymede: Implications for ocean-surface interaction (257481)
Samuel M Howell, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States and Robert T Pappalardo, NASA Jet Propulsion Laboratory, Pasadena, United States

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