TURBIDITY MAXIMA IN PARTIALLY MIXED ESTUARIES - 2-DIMENSIONAL NUMERICAL-MODEL

被引：155

作者：

FESTA, JF

HANSEN, DV

机构：

来源：

ESTUARINE AND COASTAL MARINE SCIENCE | 1978年 / 7卷 / 04期

关键词：

estuarine circulation; gravitational circulation; numerical model; partially mixed estuary; sediment transport; settling rates; suspended sediments; turbidity;

D O I：

10.1016/0302-3524(78)90087-7

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

A steady-state numerical model has been developed to help explain the presence of the turbidity maximum in partially mixed estuaries. The model supports the hypothesis that estuarine dynamics are primarly responsible for its occurrence. The magnitude and location of the turbidity maximum is shown to depend upon the settling velocity (particle size) of the sediment, the amount of sediment introduced at both the ocean and river source, and the strength of the estuarine circulation. This phenomenon is not simply related to the river input of sediments, since results show the existence of a turbidity maximum for a sediment source which is predominately oceanic. Sediment flux stream functions show the presence of a closed cell when a turbidity maximum exists. © 1978.

引用

页码：347 / 359

页数：13

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