  Oceanic tides are a major source of tidal dissipation. They are a key actor
for the orbital and rotational evolution of planetary systems, and contribute
to the heating of icy satellites hosting a subsurface ocean. Oceanic tides are
characterized by a highly frequency-resonant behavior, which is mainly due to
the propagation of surface gravity waves in the case of thin oceans, and
internal waves when they are deeper. In this work, we derive self-consistent ab
initio expressions of the oceanic tidal torque as a function of the key
physical parameters of the system (the ocean depth, the Brunt-V\"ais\"al\"a
stratification frequency, the rotation rate, the tidal frequency, the Rayleigh
friction). These solutions include the coupled mechanisms of internal and
surface gravito-inertial waves, which allows us to study the case of planets
hosting deep oceans and offer interesting prospects for the coupling between
subsurface oceans and ice shells in the case of icy satellites.

Earth and Planetary Astrophysics