ArticleScience advances2025
Subduction-like process in Europa's ice shell triggered by enhanced eccentricity periods.
Article in Science advances, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Ammonia as a parameter shaping habitability on icy moons.FEMS microbes · 2026Review
- Sample Preparation for MALDI-TOF Mass Spectrometry of Model Prebiotic Reactions in Simulated Ocean World Environments.ACS omega · 2025Article
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Authors and funding
5 authors.
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Abstract
Jupiter's icy moon Europa has a liquid water ocean beneath the ice shell and a geologically young surface, both related to extensive tidal processes. Interlaced by tectonic faults, the surface records convergent motions that induced crustal disappearance in some areas. Subduction has been advocated as an explanation; however, its driving mechanism still remains unexplained. We perform numerical simulations to test under what conditions may lateral compression initiate subduction in Europa's ice shell. We demonstrate that subduction-like recycling can occur only for shells of thickness [Formula: see text]10 kilometers, transporting the surface ice into the subsurface ocean. We further show that compression large enough to initiate subduction-like behavior in a thin shell is achieved during brief periods of enhanced eccentricity, implying increased hydrothermal activity at the seafloor. Together with the subduction-like transport of surface oxidants, such conjunction should favor chemical disequilibria in the ocean, increasing its astrobiological potential.
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