- P23E-2714: Making Subsurface Connections on Europa - Enabling Habitability?
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Board 2714‚ Hall EFG (Poster Hall)NOLA CC
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Kari Shearl, University of Arizona (First Author, Presenting Author)
Kathleen L Craft, Applied Physics Laboratory Johns Hopkins
Mallory Kinczyk, Applied Physics Laboratory Johns Hopkins
The habitability of Europa can be further constrained through understanding the mixing of oxidants and reductants. Oxidants occur on the surface due to the radiation from Jupiter and reductants can occur in the ocean from water-rock interactions. When these combine, they create chemical sources of energy for life. This study focuses on investigating cracks at the base of an ice shell that has been damaged by a small impact crater. We determine if the cracks can grow and connect the subsurface ocean to the surface to enable this mixing of chemistry for life. We accomplished this through the use of fracture mechanics programs and based the models on previous impact damage simulations. Four cracks were created at the base of the ice shell and a damaged region was created surrounding the crater. One crack was able to successfully propagate towards the crater and reach the damaged region. This indicates that underneath a small impact crater it is possible for a crack to grow and connect the ocean to the surface enabling oxidants and reductants to combine and potentially support life on Europa.
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