| 潮汐海岸等深线变化模式的应用开发 |
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| 引用本文： | 包四林,张国安,陈沈良.潮汐海岸等深线变化模式的应用开发[J].海洋学报,2005,27(4):76-81. |
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| 作者姓名： | 包四林 张国安 陈沈良 |
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| 作者单位： | 华东师范大学, 河口海岸国家重点实验室, 上海, 200062 |
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| 基金项目： | 国家重点基础发展研究规划资助项目(2002CB412408)，国家自然科学基金资助项目:(40071014). |
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| 摘 要： | 近年来随着河流入海泥沙减少等原因,我国海岸遭侵蚀的现象愈趋突出.研究岸滩演变规律、建立合理可行的预测方法有着重要而迫切的现实意义.运用宇多的等深线变化模型的原理,建立适用于潮汐海岸岸滩演变的预测模型.合理解决沿岸泥沙量沿水深分布的计算问题是建立模型的一个关键,为此引入潮间带破波历时分布的概念,提出了半潮时内的潮间带波浪输沙量及其沿岸滩断面的分布.运用该模型对鲁南侵蚀岸段进行了验证和预测计算,结果表明,计算结果合理,基本反映了该岸段的演变特征.
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| 关 键 词： | 岸线变化 潮汐型海岸 破波历时分布 输沙量水深分布 |
| 文章编号： | 0253-4193(2005)04-0076-06 |
| 收稿时间： | 2004/9/28 0:00:00 |
| 修稿时间： | 2005/4/14 0:00:00 |
Approach to isobath-change-model of tidal coast |
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| BAO Si-lin,ZHANG Guo-an and CHEN Shen-liang.Approach to isobath-change-model of tidal coast[J].Acta Oceanologica Sinica (in Chinese),2005,27(4):76-81. |
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| Authors: | BAO Si-lin ZHANG Guo-an and CHEN Shen-liang |
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| Institution: | National Major Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China |
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| Abstract: | In recenty ears,along with the reduction of the silt and sand transported by the rivers to the sea, the erosion to the bank of the China's coastturns to be worse and worse.So it is important and urgent and of realistic significance to study the rule of shoal evolution and thus to establish a reasonable and feasible forecasting model.A for ecasting model suitable to the evolution of tide-type coast beach is established by applying Professor U da's theory of equal-depth-line forecasting model.A key point in establishing the model is to find a reasonable solution in calculating the quantity of near-bank silt and sand along the equal-depth-line.The concept of the distribution of wave-breaking time in intertidal zones is introdued and thus the quantity of sand transpo rtation in the intertidal zones in the half-tide period is put forward as well as its distribution along the profile of shoal.Aforecasting calculation of the bank in South Shandong Province is made by using the model and its result is verified.It shows that the result is reasonable and basically reflects the characteristics of the evolution of that section of shoal. |
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| Keywords: | change of coastline tide-type coast distribution of wave-breaking time water depth distribution of silt transportation |
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