| 海南岛洋浦港潮汐汊道口门的均衡过水面积 |
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| 引用本文： | 高抒,张红霞.海南岛洋浦港潮汐汊道口门的均衡过水面积[J].海洋与湖沼,1994,25(5):468-476. |
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| 作者姓名： | 高抒 张红霞 |
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| 作者单位： | 国家海洋局第二海洋研究所!杭州，310012，浙江教育学院!杭州，310012 |
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| 基金项目： | 交通水运规划设计院资助 |
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| 摘 要： | 将汊道均衡与潮汐特征，纳潮量，淡水径流量及沉积物搬运格局相联系，确定了洋浦港的均衡条件，根据纳潮盆地的水面面积－水面高程曲线以及相关的特征潮位估算平均纳潮量，利用１９７７－１９７９年波浪观测资料和ＣＥＲＣ公式计算沿岸输沙率；此外，还用改进的Ｇａｄｄ公式确定口门涨、落潮流输沙率，计算中引入汊道口门流速频率分布函数的定义。由此而得洋浦港均衡过水面积为５８００ｍ＾２，与Ｏ＇Ｂｒｉｅｎ方法所得结果相比，本
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| 关 键 词： | 潮汐汊道 过水面积 洋浦港 沉积物 |
| 收稿时间： | 1991/2/20 0:00:00 |
| 修稿时间： | 1993/7/10 0:00:00 |
EQUILIBRIUM CROSS-SECTIONAL AREAOF A TIDAL INLET SYSTEM, YANGPU HARBOUR, HAINAN ISLAND |
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| Gao Shu and Zhang Hongxia.EQUILIBRIUM CROSS-SECTIONAL AREAOF A TIDAL INLET SYSTEM, YANGPU HARBOUR, HAINAN ISLAND[J].Oceanologia Et Limnologia Sinica,1994,25(5):468-476. |
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| Authors: | Gao Shu and Zhang Hongxia |
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| Institution: | Second Institute of Oceanography, SOA, Hangzkou 310012;Zhejiang College of Education, Hangzhou 310012 |
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| Abstract: | An analytical method is developed to investigate equilibrium cross-sectional areas of tidal inlet systems. The equilibrium can be related to tidal characteristics,tidal prism, freshwater input from rivers and sediment transport patterns. The method is used to identify the equilibrium conditions in Yangpu Harbour, Hainan Island. The mean tidal prism is estimated on the basis of the relationship between the basin hypsometry and characteristic tidal water levels. The rate of longshore sediment transport is calculated based upon a CERC formula and use of 1977-1979 wave data. For determination of sediment transport rates due to flood and ebb tide currents, the Gadd equation is modified through a definition of the frequency distribution function of current speeds within the harbour entrance. Thus, an equilibrium cross-sectional arca of 5 800m2 for Yangpu Harbour is obtained. The result indicates a much smaller error introduced by the approach developed here than by the O'Brien method. |
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| Keywords: | Tidal inlets Equilibrium cross-sectional area Sediment transport Yangpu Harbour |
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