2005年东海及黄海部分海域表面水温状况分析

东、黄海表面水温分布状况对中国沿海的生态系统有很大的影响,因为研究表面水温的年变化对了解生态系统的变化很有意义。本文分析了2005年东海及黄海部分海域的表面水温状况。研究表明不同的水团具有不同的水温年变化特点。2005年暖流区域的表面水温总体上与多年平均状况相比差别不大。虽然显示出上半年较冷,年末较热的现象,但只是在秋初一段时间内暖流区的表面水温比多年平均值高一些,而显示出较强的势力,年中的其余时间与多年平均的差别不大。沿岸海域的水温变化比较复杂,福建沿岸表面水温与多年平均状况差别不大;浙江沿岸及长江口邻近海域除春季的一段时间外,年中大部分时间的水温比多年平均值偏高,特别是在夏秋季节,偏高持续的时间既长,且幅度也较大;江苏北部沿岸及山东沿岸的表面水温与多年平均值相比差别不大,除在夏季一段时间内有偏高现象外,其余时间都呈略微偏低状态。中间水体的表面水温与多年平均值相比,在2005年的前3季的状况比较一致,都呈现了初冬偏暖,春季偏冷,夏季略微偏热的变化特征;秋季则南部的区域偏暖,北部区域与多年平均状况差不多。

Analysis on SST structure of the East China Sea and Yellow Sea in 2005

The SST in the East China Sea and Yellow Sea will greatly influence the eco - system in coastal area of China and analyzing the yearly variations in SST is of significant importance to understand the shifts in eco - system. Therefore the structure and abnormity of sea surface temperature in the East China Sea and Yellow Sea in 2005 were briefly reviewed and the results showed that different water masses were characterized by yearly variation in sea water temperature. The SST in warm current regions in 2005 was similar to that of the last 20 years on average. Though the SST in these areas was lower than average in the beginning of the year and higher than average near the end of the year, the SST in the warm current areas showed higher in temperature and stronger in strength only in a period of early autumn. The SST variations in coastal areas were more complicated. The SST in Fujian coastal area showed no great difference over years. And the SST in coastal area of Zhejiang and the adjacent area of the estuary of Changjiang River was lower than average in spring, but higher than average in most of the rest of the year, especially in summer and autumn. The higher temperature lasted a long period and fluctuated with a wide range. The variation of SST in coastal areas of north Jiangsu and Shandong had no great difference on average year with higher temperature than the average in summer and slightly lower in the rest of the year. The SST in transitional areas in 2005 was characterized by the similar patterns in the first three seasons, with warmer in early winter, colder in spring and slightly warmer in summer, in fall, the SST of transitional areas in south was higher than the average and that in north was near the average.