作　　者： ; ; ; ; ;

机构地区： 中山大学工学院近岸海洋研究中心

出　　处： 《海洋科学进展》 2010年第4期436-444,共9页

摘　　要： 依据水文年鉴资料,研究分析发现,黄茅海河口沿程潮差有先减小后增大的变化趋势,这与珠江口其他喇叭型口门有很大差别。调和分析表明,该区域主要受M2分潮的影响,M2分潮振幅的变化规律与潮差变化一致。因此,分别利用3个解析模型,讨论了河宽、摩擦和水深对沿程潮差的影响。结果表明,黄茅海沿程异常潮差的变化主要是由其截面面积和摩擦的共同作用造成的。 According to the statistic data of the hydrological almanac,the tidal range becomes diminished in the lower upstream of the Huangmaohai River estuary,and then enlarged in the further upstream.This phenomenon is very different from those of the other trumpet-like estuaries of the Pearl River.It is learnt from the harmonic analysis that this area is effected mainly by the M2 constituent.The tidal range variation in the estuary is consistent with the variation of the M2 constituent amplitude in the estuary.Three analytical models are employed to discuss the effects of river width,friction,and river depth on the tidal range.It is shown in the result that the abnormal tidal range along the upstrean of the Huangmaohai estuary is mainly caused by the effects of the river cross section area and the friction.

关 键 词： 黄茅海 沿程潮差 解析模型

领　　域： [天文地球] [天文地球]