Estimating the evolution of sea state non-Gaussianity based on a phase-resolving model

作     者：Xingjie JIANG Tingting ZHANG Dalu GAO Daolong WANG Yongzeng YANG Xingjie JIANG;Tingting ZHANG;Dalu GAO;Daolong WANG;Yongzeng YANG

作者机构：First Institute of Oceanographyand Key Laboratory of Marine Science and Numerical ModelingMinistry of Natural ResourcesQingdao 266061China Laboratory for Regional Oceanography and Numerical ModelingPilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Shandong Key Laboratory of Marine Science and Numerical ModelingQingdao 266061China Ocean University of ChinaCollege of Oceanic and Atmospheric SciencesQingdao 266071China 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2022年第40卷第5期

页      面：1909-1923页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：Supported by the National Key Research and Development Program of China(Nos.2016YFC1402004 2016YFC1401805 2017YFC1404201) 

主　　题：rogue wave sea state non-Gaussianity high-order spectral method spectral geometry wave-wave nonlinearity 

摘      要：The occurrence of rogue waves is closely related to the non-Gaussianity of sea states,and this non-Gaussianity can be estimated using corresponding two-dimensional wave *** paper presents an approach to non-Gaussianity estimation based on a phase-resolving model called the high-order spectral method(HOSM).Based on numerous HOSM simulations,a set of precalculated non-Gaussianity indicators was established that could be applied to real sea states without any calibration of spectral *** a newly developed extraction approach,the indicators for given two-dimensional wave spectra could then be conveniently extracted from the precalculated *** feasibility of the newly developed approach in a real wave environment is *** the estimation approach,phase-resolved non-Gaussianity can now be illustrated throughout the evolution of sea states of interest,not just at a few specific times;and the level of non-Gaussianity at any time in a duration can be identified according to the statistics(e.g.,quantities)of the phase-resolved indicators,that are obtained throughout the duration concerned.