IOCAS-IR  > 海洋环流与波动重点实验室
Effect of wave spectrum width on the probability density distribution of wind-wave heights
Liu Yahao1,2; Hou Yijun1,2; Hu Po1,2; Liu Ze1,2
2015-09-01
Source PublicationCHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
Volume33Issue:5Pages:1124-1131
SubtypeArticle
AbstractThe probability distribution of wave heights under the assumption of narrowband linear wave theory follows the Rayleigh distribution and the statistical relationships between some characteristic wave heights, derived from this distribution, are widely used for the treatment of realistic wind waves. However, the bandwidth of wave frequency influences the probability distribution of wave heights. In this paper, a wave-spectrum-width parameter B was introduced into the JONSWAP spectrum. This facilitated the construction of a wind-wave spectrum and the reconstruction of wind-wave time series for various growth stages, based on which the probability density distributions of the wind-wave heights were studied statistically. The distribution curves deviated slightly from the theoretical Rayleigh distribution with increasing B. The probability that a wave height exceeded a certain value was clearly smaller than the theoretical value for Ba parts per thousand yen0.3, and the difference between them increased with the threshold value. The relation between the H (s)/sigma ratio and B was investigated statistically, which revealed that the H (s)/sigma ratio deviated from 4.005 and declined with B. When B reached 0.698 1, the H (s)/sigma ratio was 3.825, which is about 95.5% of its original value. This indicates an overestimation in the prediction of H (s) from H (s)=4.005 sigma, and provides a potential method for improving the accuracy of the H (s) remote sensing retrieval algorithm, critical for extremely large waves under severe sea states.
KeywordWave-spectrum Width Probability Distribution Of Wave Heights Significant Wave Height
DOI10.1007/s00343-015-4126-6
Indexed BySCI
Language英语
WOS IDWOS:000360846900004
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/50637
Collection海洋环流与波动重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Ocean Circulat & Waves KLOCAW, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences;  Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Liu Yahao,Hou Yijun,Hu Po,et al. Effect of wave spectrum width on the probability density distribution of wind-wave heights[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2015,33(5):1124-1131.
APA Liu Yahao,Hou Yijun,Hu Po,&Liu Ze.(2015).Effect of wave spectrum width on the probability density distribution of wind-wave heights.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,33(5),1124-1131.
MLA Liu Yahao,et al."Effect of wave spectrum width on the probability density distribution of wind-wave heights".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 33.5(2015):1124-1131.
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