多岛海域台风浪传播特性研究

董伟良; 黄世昌; 黄君宝; 邵杰; 姚文伟

doi:10.19912/j.0254-0096.tynxb.2024-1178

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (11) : 1-10. DOI: 10.19912/j.0254-0096.tynxb.2024-1178

多岛海域台风浪传播特性研究

董伟良¹, 黄世昌¹, 黄君宝¹, 邵杰^1,2, 姚文伟¹

作者信息 +

STUDY ON PROPAGATION CHARACTERISTICS OF TYPHOON WAVES IN MULTI-ISLAND SEA

Dong Weiliang¹, Huang Shichang¹, Huang Junbao¹, Shao Jie^1,2, Yao Wenwei¹

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文章历史 +

摘要

为提升多岛海域波浪要素预测准确性,基于1987—2022年期间长江口和浙江省近岸海域57场台风期多点同期实测波浪数据,采用资料整理分析法研究波浪在不同海域波高衰减系数,利用所提出的岛礁遮蔽系数量化岛礁位置、大小等因素对混合浪平均周期影响程度,结合实测混合浪波高-周期关系提出混合浪可能出现最大、小周期取值方法,最后通过理论公式推算出研究海域波浪底摩阻系数。结果表明：波浪向近岸传播过程中波高逐渐减小,受岛礁遮蔽波浪在多岛海域传播时波能衰减比开敞无岛海域快;多岛海域中在岛礁遮蔽作用下混合浪周期会逐渐减小,周期减小程度随岛礁遮蔽程度的增大而增大;在确定波高前提下,外海海洋站强浪向重现期波高-周期关系可作为混合浪可能最大周期,风浪波高-周期关系可作为混合浪可能最小周期;根据推算,长江口和浙东淤泥质近岸海域波浪底摩阻系数Cb为0.050 m²/s³,底摩阻系数f为0.009。

Abstract

To enhance the prediction accuracy of waves in multi-island sea regions, this study uses the measured wave data of 57 typhoons in the Yangtze River Estuary and the coastal waters of Zhejiang Province from 1987 to 2022 to investigate the attenuation coefficients of wave height in various sea areas through data processing and analysis. The leef-sheltering coefficients is employed to quantify the influence of reef location, size and other factors on the average periods of mixed waves. Based on the measured wave height-period relationship of mixed waves, a method for determining the maximum and minimum periods of mixed waves is proposed. Finally, the friction coefficient of the wave bottom in the study area is calculated by using theoretical formulas. As shown in the results, the wave height gradually diminishes during the wave propagation towards the inshore, and the wave energy attenuates more rapidly in the areas with numerous islands than in open areas without islands. In a multi-island sea area, the period of mixed waves will gradually decrease under the effect of reef shielding, while the degree of period reduction increases with the increase of the reef shielding degree. For a certain wave height, the wave-period relationship of the strong wave direction at offshore stations can be regarded as the maximum possible period of the mixed wave, while the wave-period relationship of the wind waves can be taken as the minimum possible period of the mixed wave. As demonstrated in the calculation, in the Yangtze River Estuary and the near-shore regions of Zhejiang Province, the wave bottom friction coefficient Cb is 0.050 m²/s³, and the bottom friction coefficient f is 0.009.

导出引用

董伟良, 黄世昌, 黄君宝, 邵杰, 姚文伟. 多岛海域台风浪传播特性研究[J]. 太阳能学报. 2025, 46(11): 1-10 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1178

Dong Weiliang, Huang Shichang, Huang Junbao, Shao Jie, Yao Wenwei. STUDY ON PROPAGATION CHARACTERISTICS OF TYPHOON WAVES IN MULTI-ISLAND SEA[J]. Acta Energiae Solaris Sinica. 2025, 46(11): 1-10 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1178

中图分类号： TV139.2

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