气候变化领域集成服务门户(CCPortal): 2D Parametric Model for Surface Wave Development Under Varying Wind Field in Space and Time

CCPortal

DOI	10.1029/2020JC016915
	2D Parametric Model for Surface Wave Development Under Varying Wind Field in Space and Time
	Kudryavtsev V.; Yurovskaya M.; Chapron B.
发表日期	2021
ISSN	21699275
卷号	126 期号:4
英文摘要	A fully consistent 2D parametric model of wave development under spatially and/or time varying winds is developed. Derived coupled equations are written in their characteristic form to provide practical means to rapidly assess how the energy, frequency and direction of dominant surface waves are developing and distributed under varying wind forcing conditions. For young waves, nonlinear interactions drive the peak frequency downshift, and the wind energy input and wave breaking dissipation are governing the wave energy evolution. With a prescribed wind wave growth rate, proportional to (u*/c) squared, wave breaking dissipation must follow a power-function of the dominant wave slope. For uniform wind conditions, this choice for the growth rate imposes solutions to follow fetch laws, with exponents q = −1/4, p = 3/4 correspondingly. This set of exponents recovers the Toba's laws, and imposes the wave breaking exponent equal to 3. A varying wind direction can then drive spectral peak direction changes, leading to the occurrence of focusing/defocusing wave groups over localized areas where wave-rays merge and cross. Significant (but finite) local variations of the energy are then expected under varying wind forcing. Propagating away from a stormy area, wave rays generally diverge, leading to dispersive swell systems. Examples of practical applications of this model are provided in (Kudryavtsev et al., 2021, companion paper). © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	parametric wave development model; self-similar fetch-laws; wind waves
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186395
作者单位	Russian State Hydrometeorological University, St. Petersburg, Russian Federation; Marine Hydrophysical Institute, Sebastopol, Russian Federation; Laboratoire d’Oceanographie Spatiale, IfremerPlouzane, France
推荐引用方式 GB/T 7714	Kudryavtsev V.,Yurovskaya M.,Chapron B.. 2D Parametric Model for Surface Wave Development Under Varying Wind Field in Space and Time[J],2021,126(4).
APA	Kudryavtsev V.,Yurovskaya M.,&Chapron B..(2021).2D Parametric Model for Surface Wave Development Under Varying Wind Field in Space and Time.Journal of Geophysical Research: Oceans,126(4).
MLA	Kudryavtsev V.,et al."2D Parametric Model for Surface Wave Development Under Varying Wind Field in Space and Time".Journal of Geophysical Research: Oceans 126.4(2021).