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相干结构的水动力学，这为海洋和沿海环境的评估提供了知识基础。黑潮区的湍流能量密度与湾流区相同。然而，对于含能中尺度涡旋的流体动力学，我们的知识与他们对湾流环的知识相比显着不足，主要是因为测量技术的不成熟。本研究通过引入高分辨率NOAA/AVHRR数据的直接获取技术，解决了这一技术难题，建立了海洋湍流知识库，并在互联网上开放，在这两年的研究中，直接获取NOAA/AVHRR数据，对日本岛链附近的海洋湍流进行了可视化。在晴空成功的情况下，应用SeaMark方法测量了海面速度矢量场。湍流测量的采样时间在几个小时内。结合NOAA卫星云图或海平面数据，描述了海洋湍流的动力学行为。通过从NOAA/Satellite-Active-Archive数据库下载NOAA/AVHRR数据，实现了湾流区湍流的测量。分析结果以某种专题图像的形式呈现，并在互联网网站上公布。这项研究的结果也以电子形式发表在题为“日本岛链周围海洋湍流内部的相干结构（第三版）"的报告中。

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)".