星光岛建设后星海滩演化特征分析  

Evolution Characteristics of the Xinghai Beach After Construction of the Xingguang Island

作　　者：杨洁 熊丛博 边淑华 曹成林 朱子晨 YANG Jie;XIONG Congbo;BIAN Shuhua;CAO Chenglin;ZHU Zichen(First Institute of Oceanography,MNR,Qingdao 266061,China)

机构地区：[1]自然资源部第一海洋研究所,山东青岛266061

出　　处：《海岸工程》2025年第1期56-68,共13页Coastal Engineering

基　　金：山东省自然科学基金项目(ZR2022QD042);中央级财政性资金支持项目(ZY0220007)。

摘　　要：以山东青岛灵山湾星海滩为研究对象,采用多期遥感影像数据分析星光岛建设后星海滩岸线演化特征,通过两次实测高精度地形数据对比及沙滩剖面数值模拟,分析了剖面在风暴季节前后的变化特征,结果表明:星光岛建成后岸线西淤、东侵的沿岸输沙特征明显,河口汊道地形受径流影响控制,对两侧岸滩演变影响显著,沿岸输沙在河口受阻,东侧淤积强度较西侧强;从剖面特征看,星光岛后方白果树河以西波影区内滩面坡度稳定,数值模拟和实测结果均显示夏秋季前后岸滩平均高程变化小于0.2m,波影区外岸段向东随水动力加强,剖面形态由上淤下侵的常浪剖面转为上侵下淤的风暴剖面。By taking the Xinghai Beach in the Lingshan Bay of Qingdao as the study object,the evolution characteristics of beach shoreline after construction of the Xingguang Island are analyzed by using multi-temporal remote sensing images and the changes of beach profile before and after storm seasons are studied by comparing two-time measured high-precision topographic data and simulating numerially the beach profiles.The results indicate that after construction of the Xingguang Island the sediment transport along the coastline is distinctly characterized with an accumulative state along the southwestern shoreline and an erosional state along the northeastern shoreline,the topography of the river channel at the river mouth is mainly controlled by the influence of runoffs so that the beach evolution at both sides of the islane is affected significantly,and the intensity of sediment siltation at the east side becomes stronger than that at the west side due to that the sediment transport along the shoreline is blocked at the river mouth.From the profile characteristics,the slope of beach surface within the wave-influence area west of the Baiguoshu River behind the Xingguang Island is stable and the results from both the numerical simulation and the field measurement show that the changes in average elevation of beach before and after summer and autumn seasons are less than 0.2 m.With the hydrodynamic force strengthening eastward at the coastal segments outside the wave-influence area,the profile morphology changes from a normal wave profile(upper siltation and lower erosion)into a storm profile(upper erosion and lower siltation).

关 键 词：人工岛 海岸线 沙滩剖面 DSAS XBeach 

分 类 号：P737.1[天文地球—海洋地质]