根据粤东一岬间海滩碎波带短期实测的地形和波浪等资料，分析了此海滩碎波带的地形动力学特征与三维地形组合。结果表明，在正常波况下，此海滩碎波带显示了以砂坝。裂流槽谷为主的多种地形组合的变化过程。

对中等波能条件下收集的粤东两个岬闻海湾滨面带4个站点的波浪数据作了滨面带波面、波包和长重力波的基本特征的分析。得到如下主要结果：（1）滨面带波谱由多峰频构成。从海向岸波高增大，波周期减小。谱宽度加大。谱尖度减小；（2）入射波群性较强，表征入射波群性的相对均方根群高与谱宽度无关；（3）长波振幅与波浪能量增大，其形成主要与组成波闻的非线性相互作用有关。

High waves and storm surges caused by typhoon (or storm) are the disaster events for the serious erosion in coasts, to which scientists have paid close attentionts -z However, there have been little report on the response processes of the beach morphologies in different sections of the arc-shaped coast to such calamities. A sequence of beach changes that were measured in the field during the Typhoon 8616 at the arc-shaped coast of the Shuidong in Guangdong Province, South China is analyzed in this note.

对粤西水东湾沉积地貌单元的现代沉积物分布特征分析与泥沙净搬运矢量计算表明，滨面斜坡沉积物主要由砂粒级物质组成，粒级参数Md，QD和sK具有从海向岸、自东向西变化的总趋势，泥沙净搬运趋势以向岸和西北为主。落潮三角洲沉积物较其邻近滨面斜坡有所粗化，分选从中部向两侧变好，泥沙在落潮流与波浪驱动下沿落潮三角洲边缘向西运动。口门内潮汐通道深槽泥沙净搬运趋势指向渴湖。渴湖区的沉积物以泥质为主，分选中等至差，并形成绕涨潮三角洲的泥沙环流元。

This paper analyzes the dynamic characteristics of the variations of the beach volumes for three level zones of the Yanjing Beach in the Shuidong Bay of the western Guangdong Province by using the methods of dynamic system analysis and the multi-dimensional spectral estimation. The results show that the variations of the beach volume are characterized by the multiband oscillations with a dominant semimonth period. Upwards the low tide level, the beach tends to be stable. The estimates of the partial coherenees and the partial phases indicate that the variations of the beach volumes are mainly the results of the direct actions of the waves which are influenced by the tidal level changes and driven by the wind stress. The simulation results of the beach volume series for different beach height zones by threshold mixed regressive models indicate that the influence of the tide on the variations of the beach volumes is weak-ened and the direct actions of the wave energy and the wind stress are apparently enhanced with the increase of the beach height.