| 摘要: |
| 根据野外观测的原始资料,绘出粒度的分布图和不同位置的剖面图,客观地分析了茅家港滩面沉积物粒度空间分布、季节变化、粒度变化与水动力的关系,研究发现:随着离岸向海距离的增加,中值粒径逐渐变小,粒径逐渐变粗。突堤内的中值粒径比突堤外的细。冬季的中值粒径比夏季的粗。随着离岸距离的增加,水动力逐渐增强,导致滩面沉积物的粒径逐渐变粗;突堤内的水动力比突堤外的水动力弱,致使突堤内滩面沉积物的中值粒径比坝外的细;冬季的水动力比夏季的水动力强,致使冬季滩面沉积物中值粒径比夏季粗。 |
| 关键词: 粒度 变化 水动力:关系 |
| DOI： |
| 分类号: |
| 基金项目:教育部重点项目(00170);国家教育振兴计划教育部青年教师奖励基金(2001JBC12) |
|
| Grain-size distribution in Maojiagang beach sands and its relation to water dynamics |
|
|
| Abstract: |
| Grain-size distribution was mapped by original data collected in Maojiagang Beach, its seasonal change and the to water dynamics. With distance increasing from the coast, median grain sized portion decreased, grain-size become coarser. Grain-size near dams is finer than it outside dams. Grain-size in winter is bigger than it in summer. With distance to coast increasing, water dynamics be comes stronger, it lead to grain-size gradually become bigger; Water dynamics in dams is feebler than it outside dams, it lead to the grain-size in dams is smaller than it outside dams; water dynamics in winter is stronger than it in summer, resulting in coarser sand than it in summer. |
| Key words: grain-size distribution water dynamics relation |
