摘要
本文以连云港为例,将淤泥质岸滩泥沙运动归结为二种基本的物理过程:在破波带内,波浪掀沙造成泥沙悬浮;在破波带外,水体含沙量来源于破波带内悬浮泥沙在潮流作用下的扩散运移。从波高的统计分布等出发,按波能法概念提出了破波带内水体含沙量横向分布表达式;破波带被视为无数泥沙扩散线源的迭加,由此建立破波带外水体含沙量横向分布的表达式。由以上两表达式算得的破波带内、外水体含沙量分布与实测结果基本一致。
In Lianyungang Harbour, two basic physical processes of sediments movement in nearshore waters of muddy coast, i. e., the stir and suspension of sediments by waves inside the breaking wave zone and the dispersion of suspended sediments by tidal currents in the offshore region, are described. From the statistical distribution of wave height, the expression of lateral distribution of sediments concentration of the water body is proposed according to the wave energy method: that is,The breaking wave zone is known as the superposition of numerous sediments dispersing lines, thus, the expression beyond the breaking wave zone is established as follows:The calculated sediments concentration distribution inside and outside the breaking wave from the two expressions above correspond well with the measured results.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1989年第6期544-553,共10页
Oceanologia Et Limnologia Sinica
