Directional Spreading Function of the Gravity-Capillary Wave Spectrum Derived from Radar Observations

doi:10.3390/rs9040361

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Directional Spreading Function of the Gravity-Capillary Wave Spectrum Derived from Radar Observations
	Zhou, Xuan 1; Chong, Jinsong 1; Bi, Haibo 2,3; Yu, Xiangzhen 4; Shi, Yingni 5; Ye, Xiaomin 6
刊名	REMOTE SENSING
	2017-04-01
卷号	9 期号:4
关键词	Directional Spreading Function Gravity-capillary Wave Radar Observations
DOI	10.3390/rs9040361
文献子类	Article
英文摘要	Directional spreading function of the gravity-capillary wave spectrum can provide the high-wavenumber wave energy distribution among different directions on the sea surface. The existing directional spreading functions have been mainly developed for the low-wavenumber gravity wave with buoy data. In this paper, we use radar observations to derive the directional spreading function of the gravity-capillary wave spectrum, which is expressed as the second-order Fourier series expansion. So far the standard form of the second-order harmonic coefficient has not been proposed to correctly unify the gravity and gravity-capillary wave. Our strategy is to introduce a correcting term to replace the inaccurate gravity-capillary spectral component in Elfouhaily's directional spreading function. The second-order harmonic coefficient at L,C and Ku band calculated by the radar observation is used to fit the correcting term to obtain one at the full gravity-capillary wave region. According to our proposed the directional spreading function, there is a spectral region between the gravity and gravity-capillary range where it signifies the negative upwind-crosswind asymmetry at low and moderate speed range. And this is not reflected by the previous models, but has been confirmed by radar observations. The Root Mean Square Difference (RMSD) of the proposed second-order harmonic coefficient versus the radar-observed one at L, C band Ku band is 0.0438, 0.0263 and 0.0382, respectively. The overall bias and RMSD are 0.0029 and 0.0433 for the whole second-order harmonic coefficient range, respectively. The result verifies the accuracy of the proposed directional spreading function at L,C band Ku band.
语种	英语
WOS记录号	WOS:000402571700060
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/137089]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Elect, Natl Key Lab Microwave Imaging Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266061, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266200, Peoples R China 4.Shanghai Radio Equipment Res Inst, Shanghai 200090, Peoples R China 5.Ocean Univ China, Coll Informat Sci & Engn, Qingdao 266100, Peoples R China 6.Natl Satellite Ocean Applicat Serv, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Xuan,Chong, Jinsong,Bi, Haibo,et al. Directional Spreading Function of the Gravity-Capillary Wave Spectrum Derived from Radar Observations[J]. REMOTE SENSING,2017,9(4).
APA	Zhou, Xuan,Chong, Jinsong,Bi, Haibo,Yu, Xiangzhen,Shi, Yingni,&Ye, Xiaomin.(2017).Directional Spreading Function of the Gravity-Capillary Wave Spectrum Derived from Radar Observations.REMOTE SENSING,9(4).
MLA	Zhou, Xuan,et al."Directional Spreading Function of the Gravity-Capillary Wave Spectrum Derived from Radar Observations".REMOTE SENSING 9.4(2017).