The movement of sediment under the influence of waves and water flow causes changes in the beach profile at different temporal scales,significantly impacting coastal resources.Understanding the seasonal evolution of beaches and implementing targeted protective measures are urgent issues for nearshore beaches.Currently,field observations are crucial for studying the profile changes of beaches.By analyzing the temporal and spatial variations in sediment composition,shore slope,and wave dynamics,understanding the characteristics of beach profile changes becomes essential for beach management and coastal protection.This study,based on monthly profile data collected from September 2017 to November 2019 on the Southern Beach of Chudao in Rongcheng,along with wave dynamic data,explores the characteristics of beach changes at different temporal scales and discusses the correlation between beach change characteristics and wave dynamic factors.The research reveals that the southern beach of Chudao exhibits strong seasonal characteristics in morphological changes,with stability in spring,severe erosion during typhoons in summer,and rapid sediment recovery shortly after storms.In winter,the beach recovery rate gradually slows down and tends to stabilize.During summer and winter,the onshore component of wave energy flux density plays a crucial role in the evolution of the southern Chudao Beach.The mean onshore component of wave energy flux density(calculated using wave conditions from the first 15 d of data collection)shows the best correlation with beach volume,and a linear regression formula is provided.
Chudao Beachbeach profileseasonal evolutionwave energy flux densitytemporal scale changes
NETL
NSTL
万方数据
