水科学进展2013，Vol.24Issue(2)：251-257,7.
潮汐强度与咸潮上溯距离试验
Experimental study on the relationship between tide strength and salt intrusion length
摘要
Abstract
A series of channel experiments were carried out to investigate salt intrusion lengths with different tide ranges. The experiments show that there is a critical tide range value, with which the salt intrusion length reaches its minimum. Tide range increasing results in rapidly decreasing salt intrusion length if tide range is smaller than the critical value, while salt intrusion length slowly increases with increasing tide range if tide range is higher than critical value. Analyses of fresh and salt water mixing based on the experiments data uncovered the essence of the phenomena ; ① The stratification is broken during the tide range changing, which changes the forces resulting in salt intrusion; ② Gain of salt is mainly due to the exchange flow if fresh water and salt water is stratified, stronger tide strength could damp the stratification and reduce the exchange flow salt flux, causes smaller salt intrusion length;③While if fresh water and salt water is mixing well, gain of salt is mainly due to diffusion, stronger tide strength could provide stronger diffusion, causes longer salt intrusion length.关键词
盐水入侵距离/磨刀门河口/重力环流输运/密度弗劳德数/潮汐强度Key words
salt intrusion length/Modaomeng estuary/exchage flow salt flux/densimetric Froude number/tide strength分类
资源环境引用本文复制引用
卢陈,袁丽蓉,高时友,陈荣力,苏波..潮汐强度与咸潮上溯距离试验[J].水科学进展,2013,24(2):251-257,7.基金项目
水利部公益性行业科研专项经费资助项目(200901032) （200901032）
水体污染控制与治理科技重大专项(2009ZX07423-001-2) （2009ZX07423-001-2）
