摘要
在水槽中利用周期（１．０～１．９ｓ）、波高（８．６～１１．７ｃｍ）不同的规则波及波群塑造了沙纹。试验指出；１、沙纹的垂向形态指数及对称性指数符合标准浪成沙纹的相应值；２、沙纹的波长、波高、陡度与波浪水质点近底床水平运动方向的轨迹直径、波浪流的无量纲切应力、沉积物的活动性参数呈函数关系；３、沙纹的对称性与波浪的底部质量输移速率和水质点近底床的水平方向运动速率的比值有关。
In the flume experiment,ripples were produced by nine kinds of regular waves and wave groups of different periods and wave heights. The ripples existed from the mouth of the flume to 4. 5-- 4. 8m upward,with the upper limits at the bases of the swash zones. The scales of the ripples varied with the periods of waves. The ripple wavelengthes (A) decrease from the sea to the land, but the ripple heights (n) and symmetric indexes (SI) decrease gradually. The λ/a0 (a0 -- orbital diameter of nearbottom water motions) and η/a0 depend on θ (the sediment mobility number),and the SI are fuctions of the mass--transport velocity(Umt) and orbital velocity(Um) of waves.
出处
《青岛海洋大学学报（自然科学版）》
CSCD
1995年第3期349-358,共10页
Journal of Ocean University of Qingdao
基金
国家自然科学基金
