摘要
根据华南沿海不同区域和不同形态海滩的地形和碎波参数计算分析，得出本区存在着４种平均海滩状态：（１）消散优势型海滩；（２）沿岸坝－槽型海滩；（３）沿岸坝沟或低潮阶地型海滩；（４）反射优势型海滩。华南海滩状态除有长期的侵蚀趋势外，存在明显的季节演变，它与波浪作用的变化关系密切；此外，人为建造的海岸工程也可引起海滩状态的变化，今后在其开发利用中必须予以注意。
long the coasts of South China waves are formed by the monsoon and tropical cyclones.Throughout the year predominant wave directions are NE-SE with 0. 5-1.3m average wave heights and 3.0-5. 15 saverage periods. During Nov. -Apr., wave height,period and sand-transport capacity are larger than in May-Oct., and there exists some regional differences.In accordance with land forms and surf parameters of different regions and various beach morphologies in the coasts of South China, there exists 4 types of average beach phases:1.Dissipative domain beach 1 2. Longshore bar-trough beach;3. Longshore barditch or low tide terrace beachl 4. Reflective domain beach.Except for long-term erosion tendency in the beach phases of South China, there is a clear seasonal evolution which is closely related with seasonal change by wave action.Besides, man-made coastal engineering can lead to change in the beach phase,which should be noticed in future development.
出处
《热带海洋》
CSCD
1996年第4期9-16,共8页
基金
广东省自然科学基金
