Knowledge base on the oceanic turbulence around Japan-Islands-Chain aided with the directhy captured NOAA-AUHRR data

本研究的目的是明确日本岛链内部连贯结构的水动力学，为海洋和沿海环境评估提供知识基础。黑潮地区的湍流能量密度与墨西哥湾流地区相同。而对于含能中尺度涡旋的流体动力学，由于测量技术的不成熟，我们的认识明显落后于他们对湾流环的认识。本研究通过引入NOAA/AVHRR高分辨率数据的直接捕获，解决了这一技术难题，并构建了海洋湍流知识库，并在互联网上开放。在这两年的研究中，直接捕获了NOAA/AVHRR的数据，以可视化日本列岛链周围的海洋湍流。在晴空条件下，采用SeaMark方法测量海面速度矢量场。这次湍流测量的采样时间在几个小时之内。结合NOAA图像和海平面高程数据，描述了海洋湍流的水动力行为。通过从NOAA/Satellite-Active-Archive数据库中下载NOAA/AVHRR数据，实现了墨西哥湾流地区的湍流测量。分析结果以专题图片的形式呈现，并在互联网网站上发表。本研究结果也以《日本-列岛-岛链周围海洋湍流内部的相干结构（第三版）》报告的形式发表。

The aim of this research is to make clear the hydrodynamics of the coherent structure inside the Japan-Islands-Chain, which provides a knowledge base for the assessments on the marine and coastal environments. The turbulence energy in the Kuroshio region is in the same density as in the Gulf-Stream region. As for the hydrodynamics of the energy containing mesoscal eddies, however, our knowledge is significantly poor comparing to their knowledge on the Gulf-Stream-Rings mainly because of the immaturity of the measuring technology. In this study, we cleared this technical problem by introducing the direct capturing of the high resolution NOAA/AVHRR data and constructed a knowledge base of the oceanic turbulence, which is opened on an internet www-site.In these two years of research, the NOAA/AVHRR data were directly captured to visualize the oceanic turbulence around Japan-Islands-Chain. While the clear sky succeeded, the sea surface velocity vector fields were measured by applying the SeaMark method. The sampling time of this turbulence measurements was within several hours. Integrating the data with the NOAA image or the sea level elevation data, hydrodynamical behavior of the oceanic turbulence was described. The turbulence measurements of the Gulf-Stream region was realized by downloading the NOAA/AVHRR data from the database of NOAA/Satellite-Active-Archive. The results of analyses were presented in some kinds of thematic images and published on an internet www-site. The results of this study is also electronically published as the report titled "Coherent structure inside the oceanic turbulence around Japan-Islands-Chain (3rd version)".