2012年福建沿海大规模米氏凯伦藻赤潮暴发的水文气象原因探讨

发布时间：2018-05-17 19:49

本文选题：福建沿海 + 米氏凯伦藻　；参考：《海洋学研究》2016年04期

【摘要】：本文利用ERA-Interim资料集、HYCOM全球再分析资料以及沿海各站点数据,通过分析比较2005、2011和2012年福建沿海春季(3—5月)气温、水温、风场、流场和降雨数据,探讨了2012年春季水文、气象要素的年际变化特征及其与米氏凯伦藻暴发的关系。结果表明:2012年春季暴发的大规模米氏凯伦藻赤潮极可能与初春水温偏低,晚春水温偏高,后期海水迅速升温有关:初春(3月)沿海水温偏低,抑制了东海原甲藻的前期孕育;晚春(5月)水温偏高,有利于各种藻类,特别是偏暖暴发的米氏凯伦藻的生长;3—5月海水过快的升温过程,使得米氏凯伦藻成为优势藻种。相对于气候态平均而言,2012年5月呈强北风特性,水体向岸堆积作用明显,有利于藻类在近岸的堆积聚集和种群密度的提高,为藻类的生长提供了稳定的动力环境,促进了赤潮的暴发。此外,2012年1—4月的大降雨量可能为米氏凯伦藻的生长提供了良好的生物化学环境。
[Abstract]:Based on the global reanalysis data of HYCOM and the data of coastal stations, this paper discusses the hydrology in spring of 2012 by analyzing and comparing the data of temperature, water temperature, wind field, flow field and rainfall in Fujian coastal spring in 2005 and 2012. The interannual variation of meteorological elements and its relationship with the outbreak of Karen Michelia. The results showed that the red tide outbreak in spring of 2012 was probably related to the lower water temperature in early spring and higher water temperature in late spring, and the rapid rise of seawater in late spring. The lower water temperature in early spring (March) inhibited the early incubation of Prorocentrum in the East China Sea. The high water temperature in late spring (May) is beneficial to the growth of various algae, especially the overheated sea water in March and May, which makes the algal species become the dominant species. Compared with the average climatic state, May 2012 was characterized by strong north wind, and the accumulation of water was obvious, which was beneficial to the accumulation of algae on the shore and the increase of population density, which provided a stable dynamic environment for the growth of algae. The outbreak of red tide was promoted. In addition, the heavy rainfall in January-April 2012 may provide a good biochemical environment for the growth of Karen Michelia.
【作者单位】：卫星海洋环境动力学国家重点实验室;国家海洋局第二海洋研究所;浙江大学海洋科学与工程学系;
【基金】：国家自然科学基金项目资助(41276083) 国家海洋公益性行业科研专项项目资助(2013418009) 中国科学院战略性先导科技专项专题项目资助(XDA1102030404) “全球变化与海气相互作用”专项项目资助(GASI-IPOVAI-04)
【分类号】：X55

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