Two-Dimensional Evolution of the Surface Gravity Wave Field

地面重力波场的时间演化将是 通过结合海湾地区的综合实地项目进行研究， 一个完全非线性的模型。 调查开始 随着二维波阵的发展， 波谱演变与气象强迫 被风 其次，开发了一种新的治疗方法， 非线性波-波相互作用项提供更好 能量传输的分辨率和更有效的方案 用于评估相互作用对波浪演化的影响。 目前的努力包括在非洲开展一个试点实地方案， 1989年春天，接着是一年的全面实验。 后 关于建模主题，需要一个伴随模型， 优化未知源项的系统扩展将 被建造。 %%% 该项目结合了一个实地项目来测量 海面波浪场对气象强迫的影响 试图建立一个包含物理过程的模型。 目前，已经发展了一个非线性波浪演化模型， 但需要大量的计算工作， 一个过于简单的表现。 这项工作审查了一个 非线性项的替代表示，如果 成功，将允许数据的反演，以更好地 了解产生波的物理过程 领域 随后的努力将导致预测 气象强迫表面波场模型 卫星或其他技术提供的变量。

The time evolution of the surface gravity wave field will be studied by combining a comprehensive field program in the Bight of Abaco with a fully non-linear model. The investigation began with the development of a two-dimensional wave array to measure the evolution of the wave spectrum and the meteorological forcing by the wind. Secondly, a new approach was developed for treating the non-linear wave-wave interaction term to provide better resolution of the energy transport and a more efficient scheme for evaluating the effect of the interactions on wave evolution. The present effort consists of a pilot field program in the spring of 1989 to be followed by a full experiment one year later. On the modeling topic, an adjoint model necessary to optimize a systematic expansion of the unknown source terms will be constructed. %%% This project couples a field program to measure the response of the surface ocean wave field to meteorological forcing with an attempt to develop a model incorporating the physical processes. At present, a non-linear wave evolution model has been developed, but required either massive computational effort, or a truncation to an overly simplified representation. This effort examines an alternate representation to the non-linear terms, which, if successful, would permit an inversion of the data to better understand the physical processes at work producing the wave field. The subsequent effort would then lead to a predictive model of the surface wave field forced by meteorological variables available from satellite or other techniques.