摘要
通过对长兴、横沙两岛潮滩沉积物粒度概率曲线的分析，揭示了潮滩沉积 物的以下特点：１．以跃移组分为主，悬移组分次之，滚动组分极少；２．随着沉积物 的变细，跃移组分含量呈减少趋势，悬移组分相反；３．跃移和悬移组分具有显著的 双段式特征，反映了潮流的双向搬运和沉积作用；４．跃移－悬移组分的临界粒径 （）与样品的平均粒径Ｍ（）之间呈抛物线型正相关。
Through the analyses of sedimentary grain-size probability curves of tidal flats in Changxing and Hengsha Islands, following characteristics are discovered: 1. Sediment of a tidal flat is mainly composed of leap transport grains, of less suspension composition and of the least roll composititon. 2. The leap composition in sediment becomes less and the suspension becomes more as the mean grain-size becomes smaller. 3. The obvious twin leap and twin suspension show the the two-way transportation of tidal currents. 4. The critical grain-size () between leap and suspension is positively interrelated to Mz () as a parabola.
出处
《海洋科学》
CAS
CSCD
北大核心
1994年第1期60-63,共4页
Marine Sciences
关键词
潮滩
概率曲线
沉积物
粒度
Tidal flat, Sediment, Probability curve
