岬间海岸地形剖面特征与泥沙净输运趋势

Coastal Topography Profiles and Net Sediment Transport Trends in a Coast Between Headlands

对粤东后江岬间海岸１９９２和１９９３年７条重复地形剖面分析结果表明，当前各剖面年净冲淤变化很小，剖面分别与Ｂｏｄｇｅ和Ｌｅｅ平衡剖面模式符合良好，拟合的平衡剖面截止水深反映了在海区波候条件作用下泥沙运动的临界水深．此外，根据底质净输运趋势模式对近岸区沉积物运动趋势作了统计分析．

This paper analyzes the variations and equilibrium states of seven coastal profiles measured in 1992 and 1993,respectively. The results show that the net erosion or siltation of the profiles is small.The shapes of every profiles fit well to the Bodges and Lees equilibrium profile models.The fitted closure water depthes of the profiles indicate the critical depthes of sediment motion under the wave climate of this waters. In addition, the sediment transport directions of the nearshore zone are statistically analyzed based on the model of net sediment transport trends.