水道港口2025，Vol.46Issue(2)：187-195,235,10.
裂流对小角湾地貌演变的影响研究
Impact of rip currents on landform changes in Xiaojiao Bay
摘要
Abstract
The formation of rip currents and the shaping of nearshore topography complement each other.Recently,the coastline of the Xiaojiao Bay section of Qiziwan,Changhua,Hainan Province has retreated,and the erosion of underwater sandy landforms has intensified.The XBeach model was used to study the nearshore rip currents and beach evolution of this coast,analyze the local rip current formation mechanism and its impact on terrain evolution.The results show that the generation of rip currents in Xiaojiao Bay is comprehensively affected by wave height,wave direction and topography,and the seasonal differences are obvious.Under the influence of the multi-year average significant wave height,obvious rip current distribution can be formed along the Xiaojiao Bay,with more rip currents in summer than in winter.The intensity of rip flow increases with the increase of wave height,but when the wave height increases to a certain threshold,the occurrence of rip flow will be inhibited.Meanwhile,the rip current intensity is also affected by the wave direction.The rip current intensity in the headland area is negatively correlated with the incident angle,and the rip flow intensity in the sand bar trench area is positively correlated with the incident wave direction.The erosion and siltation pattern of the Xiaojiao Bay beach is consistent with the distribution characteristics of the rip current field.The rip current is strengthened in the trough,and the strength of the rip current in the rift head and nearby vortex areas is weakened,resulting in sedimentation at the sand bar and sediment in the sand trough.Scouring intensifies the erosion of the coastline and the unevenness of the nearshore topography,and also lead to intensified erosion of the coastline in the middle and lower parts of Xiaojiao Bay.关键词
裂流/岸滩演变/海岸地貌/XBeach/海南昌化小角湾/人类活动Key words
rip current/beach evolution/coastal morphology/XBeach/Xiaojiao Bay,Changhua,Hainan/human activities分类
交通运输引用本文复制引用
夏竹颖,王俊,孔俊,赵红军..裂流对小角湾地貌演变的影响研究[J].水道港口,2025,46(2):187-195,235,10.基金项目
国家重点研发计划项目(2021YFB2600200) （2021YFB2600200）
