| 复坡珊瑚礁地形规则波传播特性试验研究 |
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| 引用本文： | 诸裕良,丁诚宇,宗刘俊,赵红军,管大为,谈雯倩.复坡珊瑚礁地形规则波传播特性试验研究[J].水科学进展,2021,32(6):933-943. |
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| 作者姓名： | 诸裕良 丁诚宇 宗刘俊 赵红军 管大为 谈雯倩 |
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| 作者单位： | 1.河海大学海岸灾害及防护教育部重点实验室, 江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金长江水科学研究联合基金项目U2040203交通运输部建设科技项目2015328521280 |
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| 摘 要： | 针对带礁缘的复坡珊瑚礁地形，开展4组礁坪水位条件下、不同入射波高和波周期相组合的系列组次规则波试验，分析波高和增水的沿礁变化过程，研究深水波高、波周期和环境水位对破碎波高、破碎位置、礁坪增水和传递波高的影响规律，拟合给出试验地形下的参数化公式。研究表明:破碎波高和破碎位置随深水波高和波周期的增大而增大，受礁坪水位的影响相对较小；礁坪增水和传递波高受礁坪水位的影响较大，增水随水位的抬升而减小，传递波高随水位的抬升而增大；破碎波高和深水波高的比值与深水波陡相关；传递波高和深水波高的比值与礁坪水深深水波高比相关；量纲一破碎位置（破碎点至礁边的水平距离与礁边处浅水波长的比值）及量纲一礁坪增水（礁坪增水和深水波高的比值）均可通过礁边水深与深水波高比建立参数化公式。
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| 关 键 词： | 珊瑚礁 波浪传播 破碎特征 礁坪增水 传递波高 |
| 收稿时间： | 2020-10-30 |
Experimental study on regular wave propagation characteristics over coral reef topography with composite slopes |
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| Affiliation: | 1.Key Laboratory of Coastal Disaster and Protection(Hohai University), Ministry of Education, Nanjing 210098, China2.Engineering Research Center of Dredging Technology of Ministry of Education, Hohai University, Nanjing 210098, China |
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| Abstract: | A series of experimental tests to study the effect of the height and period of ocean wave on composite coral reef topography was performed. Our study found that the breaker height and breaker distance to a certain reference location increases as either the height or the period of the deep water wave increases, and were relatively less affected by reef flat water level. Wave set-up over reef flat was found to decrease with the rise of water level while transmission wave height over reef flat was found to increase; both of them were greatly affected by the reef flat water level. The dimensionless analyses have shown that the ratio of breaker height to deep water wave height was found to be associated with deep water wave steepness and the ratio of transmission wave height to deep water wave height with the ratio of reef flat still water depth to deep water wave height. In addition, for the dimensionless breaker position (the ratio of horizontal distance between the breaker point and the reef edge to the reef-edge shallow-water wave length) and the dimensionless reef flat wave set-up (the ratio of wave set-up to deep water wave height), a parametric formulae can be established through the ratio of reef-edge water depth to deep water wave height. |
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