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Bimodality and growth of the spectra of typhoon-generated waves in northern South China Sea
Mo, Dongxue1,2,3,4; Liu, Yahao1,2,4; Hou, Yijun1,2,3,4; Liu, Ze1,2,4
2019-11-01
Source PublicationACTA OCEANOLOGICA SINICA
ISSN0253-505X
Volume38Issue:11Pages:70-80
Corresponding AuthorLiu, Yahao(yhliu@qdio.ac.cn)
AbstractBuoy-based observations of wave spectra during the passage of three typhoons in the northern South China Sea are examined. Though most spectra of mature typhoon-generated waves are unimodal, double-peaked spectra account for a significant proportion during the growing and decaying stages. This is due either to the superposition of swells on local wind waves or to the mechanism of nonlinear interaction between different wave components. The growth rate of energy density is an effective way to predict spectrum variation. The dominant wave direction depends on the location of the typhoon center to the site, but the direction spread shows no regularity in distant regions. In this study, a new six-parameter spectral formula is proposed to represent double-peaked spectra and is shown to provide a better fit than previous models. The theoretical relationship between shape parameter and spectral width is still applicable to each peak. The characteristics of the variations of spectral parameters are analyzed. It is demonstrated that the spectral parameters are not only related to the typhoon intensity and typhoon track, but also have strong intercorrelations. Moreover, the growth relation between significant wave height and significant wave period is obtained to fit the typhoon-generated waves.
Keyworddouble peak South China Sea spectral parameters typhoon wave spectrum
DOI10.1007/s13131-019-1500-9
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41406017] ; National Natural Science Foundation of China[U1406402] ; National Natural Science Foundation of China[41421005] ; National Key Research and Development Program of China[2016YFC1402000] ; National Key Research and Development Program of China[2018YFC1407003] ; CAS Strategic Priority Project[XDA19060202] ; CAS Strategic Priority Project[XDA19060502]
WOS Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000496697100008
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/164863
Collection海洋环流与波动重点实验室
Corresponding AuthorLiu, Yahao
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao 266071, Shandong, Peoples R China
2.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Ocean Dynam & Climate, Qingdao 266237, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Shandong, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Mo, Dongxue,Liu, Yahao,Hou, Yijun,et al. Bimodality and growth of the spectra of typhoon-generated waves in northern South China Sea[J]. ACTA OCEANOLOGICA SINICA,2019,38(11):70-80.
APA Mo, Dongxue,Liu, Yahao,Hou, Yijun,&Liu, Ze.(2019).Bimodality and growth of the spectra of typhoon-generated waves in northern South China Sea.ACTA OCEANOLOGICA SINICA,38(11),70-80.
MLA Mo, Dongxue,et al."Bimodality and growth of the spectra of typhoon-generated waves in northern South China Sea".ACTA OCEANOLOGICA SINICA 38.11(2019):70-80.
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