A relationship between wave steepness and wave age for wind waves in deep water

作     者：刘斌 丁赟 管长龙 

作者机构：Physical Oceanography Laboratory and Institute of Physical Oceanography Ocean University of China Qingdao 266003 China College of Meteorology PLA University of Science and Technology Nanjing 211101 China Physical Oceanography Laboratory and Institute of Physical Oceanography Ocean University of China Qingdao 266003 China Department of Surveying Guangdong Electric Power Design Institute Guangzhou 510600 China Physical Oceanography Laboratory and Institute of Physical Oceanography Ocean University of China Qingdao 266003 China 

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

年 卷 期：2007年第25卷第1期

页      面：36-41页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 

基　　金：Supported by Specialized Research Fund for Doctoral Program of Higher Education (No.20040423002) by National Natural Science Foundation of China (No.40476008) 

主　　题：wave steepness wave age relationship between wave steepness and wave age drag coefficient 3/2-power law 

摘      要：Studying the relationship between wave steepness and wave age is important for describing wind wave growth with energy balance equation of significant waves. After invoking the dispersion rela- tion of surface gravity wave in deep water, a new relationship between wave steepness and wave age is revealed based on the “3/2-power law (Toba, 1972), in which wave steepness is a function of wave age with a drag coefficient as a parameter. With a given wave age, a larger drag coefficient would lead to larger wave steepness. This could be interpreted as the result of interaction between wind and waves. Comparing with previous relationships, the newly proposed one is more consistent with observational data in field and laboratory.