| The infection of the oceans to the climate, is primarily through the changes of the ocean temperature,salinity,water flows and the exchange between ocean and atmosphere. Seawater temperature and salinity is not only important physical parameters in the research of the sea water vapor and heat exchange, but also a direct indicate of the sea flows,Water masses,Ocean front,Upwelling and Water mixed.In this paper, for researching of PN section in the East China Sea as an example, based on the ocean database, which issued by the America National Oceanic Atmospheric Administration (NOAA) in 2007, used MATLAB computer software, developed section visualize method, display the distribution of the temperature, salinity and chemical elements with two-dimensions and three-dimensions. First of all, used the summer temperature compared with previous studies, to ensure the method can be used, and then research the distribution of the temperature, salinity and characteristics with month. The results are as follows:(1) By the analysis of the monthly changes of the temperature and salinity on the PN section, it is found, from January to April, the area of Yangtze diluted water and Yellow Sea coastal has a low temperature. The Taiwan warm current exists all months, mainly around 123°E, and transport along the 100-meter isobaths; especially in June, it can reach to near 31°N. The Kuroshio existents in the south-east area, the temperature is significantly higher than the other currents, form a high-temperature water tongue.(2) Salinity distribution shows that the coastal Yangtze diluted water flows is not through the PN section, and the impact to the East China Sea is within depth of 15 meters. Combined with previous studies, the Kuroshio in the East China Sea shows the same identity. It reflects that the western North Pacific and the Kuroshio Current through the channel between the Ryukyu Islands for water exchange.(3) The distribution of chemical elements along PN section shows that: oxygen, phosphorus, silicon content in the Kuroshio area is low, surface characteristics is low-nutrient, showing a tongue flows along the Kuroshio. The High concentration areas are mainly distributed in the Yangtze diluted water, Yellow Sea along the flow area, and Zhejiang upwelling area. There is an inverse correlation distribution between temperature and chemical elements on the surface. |
