  The existence of triadic resonances in the magnetized spherical Couette
system (MSC) is related to the development of modulated rotating waves, which
are quasiperiodic flows understood in terms of bifurcation theory in systems
with symmetry. In contrast to previous studies in spherical geometry the
resonant modes are not inertial waves but related with the radial jet
instability which is strongly equatorially antisymmetric. We propose a general
framework in which triadic resonances are generated through successive Hopf
bifurcations from the base state. The study relies on an accurate frequency
analysis of different modes of the flow, for solutions belonging to two
different bifurcation scenarios. The azimuthal and latitudinal nonlinear
coupling among the resonant modes is analysed and interpreted using spherical
harmonics and the results are compared with previous studies in spherical
geometry.
