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SUMMARY:Convection in Europa's ocean subject to tidal heating from the man
 tle - Dr Daphne Lemasquerier (St Andrews)
DTSTART;VALUE=DATE-TIME:20250509T120000
DTEND;VALUE=DATE-TIME:20250509T130000
UID:https://talks.ox.ac.uk/talks/id/b15263f4-fa7e-4045-8572-06f9fa522218/
DESCRIPTION:Several icy moons of Jupiter and Saturn\, including Europa and
  Enceladus\, host liquid oceans buried beneath their icy crusts. Geologica
 l features of the ice crusts as well as large-scale variations of the ice 
 thickness are often attributed to endogenic processes within the ice. Howe
 ver\, the ice crust is also coupled to the rocky interior via the convecti
 ve ocean which controls heat and material exchanges. Using direct numerica
 l simulations in rotating spherical shells\, we investigate how tidal heat
 ing within the silicate mantle could affect rotating thermal convection in
  Europa's ocean. In particular\, tidal heating in the rocky mantle is spat
 ially heterogeneous (larger at the poles\, with longitudinal variations of
  order 2 in the equatorial region). These horizontal variations can drive 
 "thermal winds" which would significantly change the general circulation i
 n the ocean compared with homogeneous heating\, which is more representati
 ve of radiogenic heating. These results suggest that if tidal heating is d
 ominant in the silicate mantle\, its pattern could be partially transposed
  up to the ice despite the dynamic ocean lying between the ice crust and t
 he rocky mantle.\nSpeakers:\nDr Daphne Lemasquerier (St Andrews)
LOCATION:Department of Earth Sciences (Seminar Rooms)\, South Parks Road O
 X1 3AN
TZID:Europe/London
URL:https://talks.ox.ac.uk/talks/id/b15263f4-fa7e-4045-8572-06f9fa522218/
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DESCRIPTION:Talk:Convection in Europa's ocean subject to tidal heating fro
 m the mantle - Dr Daphne Lemasquerier (St Andrews)
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