Cooperative Research on Basic Problems for Satellite Measurement of Air-Sea Boundary Processes

这项合作研究的目的是研究海气相互作用，包括风浪动力学和相关的微波后向散射机制。海洋表面的微波后向散射是卫星遥感海洋的重要内容。东北小组拥有大型的风浪隧道，并一直在开展与此目标相关的基础研究。悉尼小组在巴斯海峡有风浪观测的海洋平台，三年来，两个小组每年都有一名成员访问对方小组，进行合作研究。研究结果如下：1）得到了四个与风浪和空气边界层有关的有意义的结果。他们都提交给期刊，其中两篇发表了。这四篇论文的题目是：a）风浪谱对变化风的响应，B）海面风应力的波浪依赖性，c）海浪上的应力起伏，d）风浪的陡度和形状。2）两个小组都进行了微波雷达实验。3）初步探讨了利用卫星高度计和NOAA的红外图像联合研究大尺度海洋运动的方法; 4）通过三年的观测，形成了一个相互访问和停留的方案。这对未来的合作很有帮助。

The aim of this cooperative research is to study the air-sea interaction including the wind-wave dynamics and the related microwave backscattering mechanism. The microwave backscattering at the ocean surface is important for the satellite remote sensing of the ocean. The Tohoku group has a large wind-wave tunnel and has been investigating basic researches associated with the aim. The Sydney group has ocean platforms for the wind-wave observation in the Bass strait.In each of the three years, one of the members of both the group has visited the other group, and has proceeded the cooperative research. The results of research is summarized as follows ;1) Four considerable results associated with the wind waves and the air boundary layer have been obtained. They were all submitted to journals, and two of them were published. The titles of the four papers are ;a) the response of wind-wave spectra to changing winds,b) wave dependence of sea-surface wind stress,c) stress fluctuations over ocean waves,d) the steepens and shape of wind waves.2) Microwave radar experiments has been done by both of the group. The results are now being refined to be published.3) A preliminary study is made for combining the satellite altimeter and IR-images of NOAA to investigate the large scale oceanic motions.4) A scheme for visiting each other and staying has been formed through these three years. This is useful for future collaborations.