The main driving force of 3D nearshore currents is radiation stresses, and three types of vertical profile of the radiation stresses have been proposed. This paper shows a vertical profile of each radiation stress with an improved type proposed in this study, and a capacity of nearshore current prediction under a condition of a regular and an irregular wave, respectively. At the end of this study, radiation stresses of wave dissipation type became the most appropriate driving force for 3D nearshore current model.
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