珊瑚礁坪波浪的衰减特性分析  

Characteristics of wave attenuation on the coral reef

作　　者：黎满球[1] 朱良生[1] 隋世峰[1] 

机构地区：[1]中国科学院南海海洋研究所,广东广州510301

出　　处：《海洋工程》2003年第2期71-75,共5页The Ocean Engineering

基　　金：资助项目:国家专项(2001DIA50041);国家自然科学基金资助项目(49976005);广东省科技创新工程项目(99B07102G)

摘　　要：珊瑚礁海底与一般的礁石或泥沙海底结构相差很大,波浪衰减特性也相差较大。根据实测海浪资料,讨论波浪在礁坪上传播的衰减特性和波浪能量的转移。分析结果表明,在相对水深为0 0613～0 0867之间,波浪传播单位距离(100m)的波高衰减系数为22 09%～46.56%,平均值为31.35%;波能衰减系数为33.74%～53.23%,平均值为43.61%。波浪在礁坪上传播过程中,高频损失的能量多于低频,谱能量向低频转移。应用统计方法得到波高、波能衰减系数与相对水深D L关系的拟合方程。The coral reef bottom of the sea is very different from the ordinary reef or sediment bottom. The waves attenuation on the coral reef is also very different. Based on the measured wave data, the attenuation characteristics and the energy transfer of waves on the coral reef are discussed. The wave height attenuation coefficient of each unit distance(100*!m)at 0.06130.0867 relative depth is 22.09 %46.56%, and its mean value is 3135%. The wave energy attenuation coefficient of each unit distance(100*!m)is 3374%5323%, and its mean value is 4361%. The wave at high frequency loses more energy than the one at low frequency in the wave propagation on the coral reef, and spectral energy from high frequency wave transfers to low frequency wave. The fitted equation with attenuation coefficient and relative depth is obtained by a statistical method.

关 键 词：珊瑚礁坪 波浪衰减 波能量转移 

分 类 号：P731.22[天文地球—海洋科学]