The relationshipbetween the shifts of tidal troughs and the evolution of sand ridges are analyzed onbasis of study on the movements of main tidal troughs and small tidal trough on beach.

• 研究了辐射沙洲区内大型潮沟及岸滩小型潮沟的变迁规律,并揭示了潮沟变迁与沙洲演化的关系。