双峰海浪频谱的一种表示  

REPRESENTATION OF BIMODAL FREQUENCY SPECTRA OF SEA WAVES

作　　者：管长龙[1] 张大错[1] 关世义[2] 

机构地区：[1]青岛海洋大学物理海洋研究所,青岛266003 [2]航天工业总公司三院三部,北京100074

出　　处：《海洋与湖沼》1996年第2期151-156,共6页Oceanologia Et Limnologia Sinica

基　　金：航天工业总公司资助

摘　　要：采用低频分谱和高频分谱叠加的思想，提出了双峰海浪频谱的一种表示。所用的分港形式为以便于确定的物理量为参数的Neumann型谱形。给出了由实测双峰港的特征量确定分谱参数的合理途径，解释了以往双峰诺表示中高频部分过高估计的原因并予以解决，最后应用于胶州湾和南海西沙海域的实测谱。A representation of the bimodal frequency spectra of sea waves is presented, in which the bimodal spectra are expressed as summation of low and high frequency component spectra in Neumann form with readily determined parameters, including the zeroth moment of the spectra , peak frequency and peakness factor A procedure is given to reasonably determine these parameters on the basis of the measured spectral characteristics.The problem of overestimation at the high frequency band in the past work is explained and resolved. Application of the proposed formula to fit measured bimodal spectra obtained from Jiaozhou Bay in the Yellow Sea and the Xisha area, in the South China Sea showed good agreement between computed and measured values.

关 键 词：海浪 双峰谱 南海 胶州湾 

分 类 号：P731.22[天文地球—海洋科学]