基于分层系数法与混合比法的长江口盐淡水混合规律研究
发布时间：2018-10-05 17:09
【摘要】：采用长江口4条入海汊道3个月的水文测验资料,研究长江口的盐度分布格局和盐淡水混合情况,运用分层系数法和混合比法对长江口实测盐度数据进行分析。结果表明:北支汊道的盐度最高,洪、枯变幅大,全年均为垂向均匀混合型;南支3条汊道盐度从高到低依次为南槽、北槽、北港;盐淡水混合强度从高到低依次为南槽、北槽、北港,这与长江口北港分流量大于北槽、北槽分流量大于南槽的格局相对应;枯季的混合强度大于洪季,大潮的混合强度大于小潮。盐淡水的混合强度呈周期性变化,涨急前后垂向混合程度最大,涨潮的混合强度高于落潮时的混合强度。
[Abstract]:The distribution pattern of salinity and the mixing of salt and fresh water in the Yangtze River Estuary were studied by using the hydrological data of 4 inlet channels in the Yangtze River Estuary for 3 months. The measured salinity data of the Yangtze River Estuary were analyzed by stratification coefficient method and mixing ratio method. The results show that the salinity of the northern branch is the highest, the flood and the dry range are large, and all the year round are vertical uniform mixing type, the salinity of the three branches of the southern branch is the south channel from high to low, the north port, and the intensity of salt and fresh water mixing from high to low is the southern channel. The north channel and the north port correspond to the pattern that the flow of the north port in the Yangtze Estuary is greater than that of the north trough, and the flow of the north channel is larger than that of the south trough, and the mixing intensity of the dry season is greater than that of the flood season, and the mixing intensity of the spring tide is greater than that of the low tide. The mixing strength of salt and fresh water varies periodically, and the vertical mixing intensity of salt and fresh water is the largest before and after rising rapidly, and the mixing intensity of high tide is higher than that of falling tide.
【作者单位】： 河海大学港口海岸与近海工程学院;
【分类号】：TV148.4;P731.2
本文编号：2254183
[Abstract]:The distribution pattern of salinity and the mixing of salt and fresh water in the Yangtze River Estuary were studied by using the hydrological data of 4 inlet channels in the Yangtze River Estuary for 3 months. The measured salinity data of the Yangtze River Estuary were analyzed by stratification coefficient method and mixing ratio method. The results show that the salinity of the northern branch is the highest, the flood and the dry range are large, and all the year round are vertical uniform mixing type, the salinity of the three branches of the southern branch is the south channel from high to low, the north port, and the intensity of salt and fresh water mixing from high to low is the southern channel. The north channel and the north port correspond to the pattern that the flow of the north port in the Yangtze Estuary is greater than that of the north trough, and the flow of the north channel is larger than that of the south trough, and the mixing intensity of the dry season is greater than that of the flood season, and the mixing intensity of the spring tide is greater than that of the low tide. The mixing strength of salt and fresh water varies periodically, and the vertical mixing intensity of salt and fresh water is the largest before and after rising rapidly, and the mixing intensity of high tide is higher than that of falling tide.
【作者单位】： 河海大学港口海岸与近海工程学院;
【分类号】：TV148.4;P731.2
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