Abstract
Wind is the primary driver of horizontal flows in stratified lakes. Its periodic nature may cause a resonance regime when its frequency matches that of an internal mode of motion of the waterbody forced by it. Here, we show via numerical experiments that the wind-induced, resonant basin-scale internal waves most often observed may lead to different net horizontal transports depending on their vertical modal structure. We suggest that the wind-induced resonance phenomenon in stratified lakes might be a canonical hydrodynamics feature, especially in water basins exposed to diurnal breezes.
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