shallow, macro-tidal shelf. Its plume dynamics is complex and the impact of the discharge on
the tidal properties on the adjoining shelf remains poorly understood. Through a series of
numerical modelling experiment, we investigate the interaction between the Amazon
discharge and the tide over the Amazonian shelf. We find that the runoff is responsible for a
rise of the M2 tidal amplitude of ten cm in the embayment between Cabo Norte and Cabo …