岬间海滩泥沙输运趋势与剖面分形研究  

Study on Sediment Transport Trend and Profile Fractals on a Beach Between Headlands

作　　者：戴志军[1] 施伟勇[2] 陈子燊[3] 恽才兴[1] 

机构地区：[1]华东师范大学河口海岸国家重点实验室,上海200062 [2]国家海洋局第二海洋研究所,浙江杭州310012 [3]中山大学水资源系,广东广州510275

出　　处：《海洋科学进展》2005年第2期168-173,共6页Advances in Marine Science

基　　金：河口海岸国家重点实验室开放基金项目--南汇东滩环境动力沉积过程及对杭州湾北岸冲淤影响分析(200404);国家自然科学基金项目--近岸带长重力波动运动和碎波带地形演变的耦合过程(40276030)

摘　　要：根据1999年7月实测的粤东岬间海滩沉积与地形变化资料,采用沉积物输运概率模式(McLaren模型)对海滩沿岸泥沙运移趋势进行探讨。结果表明,在常波况条件下海滩沿岸泥沙向偏南方向运移,在高能条件下可能出现与常波况条件下相反运动的趋势。进一步利用分形分布模型研究了海滩剖面的分形性质,提出了岬间海滩剖面地形变化的短期分形预测模型。Based on the sediment and topographic data observed on a beach between headlands along the eastern Guangdong coast in July 1999, the probability model of sediment transport(McLaren model) was used to explore the alongshore beach sediment transport trend. It is shown from the analysis results that the alongshore beach sediment was transported southward under normal wave conditions and could be transported northward under high wave energy conditions. In addition, the fractal distribution model is used to study the fractal characteristics of beach profile, and a short-term fractal prediction model for the topographic variations of beach profile between headlands is proposed.

关 键 词：泥沙输运趋势 海滩剖面 岬间海滩 分形分析 

分 类 号：TV148[水利工程—水力学及河流动力学]