摘要
2008年和2009年,黄海中西部局部海区均出现绿潮浒苔,但由于绿潮爆发时间不同和漂移路径不同,造成的影响大不相同。本文利用EOS卫星的多通道资料,采用通道合成的方法,给出了绿潮浒苔的分布和移动情况。利用卫星遥感的海面风场、降水、云中液态水含量、海表面温度（SST）、POM模式模拟的海流等资料,分析了2009年绿潮浒苔期间的水文气象条件、以及浒苔聚集和定向移动的原因,并与2008年的情况进行了对比。结果表明,前期降水的明显增多与绿潮爆发有密切关系,降水过后海水中营养盐类充足,而且降水后黄海上空降水和云中液态水含量偏少,日照比较充足,光合作用强,有利于海上浒苔迅速繁殖。2009年黄海西部降水明显增多的时间较2008年晚15 d左右,是2009年绿潮浒苔爆发比2008年晚15 d左右的重要原因。风力是浒苔在海洋中移动的主要强迫力,强劲持续的的东风或者东南风是导致2008年浒苔在青岛沿海登陆的主要外界强迫力,而2009年西南风使浒苔向东北方向漂移。SST变化对浒苔爆发的影响不显著。定量分析表明,浒苔密集区的移动更倾向于与盛行风向一致,向下风方偏右540（°）方向漂移,浒苔密集区的移速与海流速度更加一致，约为海流速度大小的0．8倍。
In 2008 and 2009, enteromorpha prolifera blooms in the mid-western Yellow Sea producing green tide. By using EOS/MODIS remote sensing data, the densely distributed enteromorpha areas are detected. The environmental hydro meteorological conditions in 2009, such as wind speed and direction, precipitation, cloud liquid water content （CLW）, sea surface temperature （SST） and current are analyzed and compared with it in 2008. The concentrations of enteromorpha coverage and their drift paths are also discussed. The result shows that, the more precipitation occurs may lead the enteromorpha occurs earlier, because after the precipitation, there are plenty of nutritious and less CLW which＇lead there are more solar energy to come into the sea water producing strong photosynthesis. Two results both benefit to the enteromorpha blooming. 15 days later of much precipitation in 2009 than that in 2008 may lead the enteromorpha blooming 15 days later. The wind is the strongest factor of the enteromorpha drifting. In 2008, large and steady east wind or southeast wind lead the enteromorpha area to drift along the coast of Shandong province in Yellow sea, in 2009 southwest wind make the enteromorpha area drift to north. The SST does not show much influence to the enteromorpha bloom occuring between 2008 and 2009. Quantitative analysis shows that, algal-intensive areas tend to move in line with the prevailing wind direction, or 5-40（°） difference right to the direction of the wind direction, the speed of the enteromorpha intensive areas is more consistent with the ocean currents, or about 0. 8 times in the speed of ocean currents.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第10期15-23,共9页
Periodical of Ocean University of China
基金
青岛市科技发展计划项目(08-1-7-3-hy)
国家高技术研究发展计划项目(2006AA09Z149)资助
关键词
绿潮浒苔
移动路径
爆发早晚
水文气象
定量分析
Enteromorpha prolifera
drift path
outbreak sooner or later
hydro-meteorological
quantitative analysis
