文献类型：期刊文献

英文题名：Influence of Typhoon Matsa on Phytoplankton Chlorophyll-a off East China

作者：Zhao, Hui[1];Shao, Jinchao[1];Han, Guoqi[2];Yang, Dezhou[3,4];Lv, Jianhai[5]

机构：[1]Guangdong Ocean Univ, Guangdong Key Lab Climate Resource & Environm Con, Coll Ocean & Meteorol, Zhanjiang, Peoples R China;[2]Fisheries & Oceans Canada, Northwest Atlantic Fisheries Ctr, St John, NF, Canada;[3]Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China;[4]Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China;[5]Marine & Fishery Environm Monitoring Ctr Guangzho, Guangzhou, Guangdong, Peoples R China

年份：2015

卷号：10

期号：9

外文期刊名：PLOS ONE

收录：SCI-EXPANDED(收录号：WOS:000361800700026)、、WOS

基金：The present research is supported by the Foundation for Distinguished Young Teacher in Higher Education of Guangdong (YQ2013092), the National Natural Science Foundation of China (41376125 and 41006070), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA11020305, CDA11010301, and XDA11010302), China and the Canadian Space Agency Government Related Initiative Program (GRIP).

语种：英文

外文摘要：Typhoons can cause strong disturbance, mixing, and upwelling in the upper layer of the oceans. Rich nutrients from the subsurface layer can be brought to the euphotic layer, which will induce the phytoplankton to breed and grow rapidly. In this paper, we investigate the impact of an intense and fast moving tropical storm, Typhoon Matsa, on phytoplankton chlorophyll-a (Chl-a) concentration off East China. By using satellite remote sensing data, we analyze the changes of Chl-a concentration, Sea Surface Temperature (SST) and wind speed in the pre- and post-typhoon periods. We also give a preliminary discussion on the different responses of the Chl-a concentration between nearshore and offshore waters. In nearshore/coastal regions where nutrients are generally rich, the Chl-a maximum occurs usually at the surface or at the layer close to the surface. And, in offshore tropical oligotrophic oceans, the subsurface maxima of Chl-a exist usually in the stratified water column. In an offshore area east of Taiwan, the Chl-a concentration rose gradually in about two weeks after the typhoon. However, in a coastal area north of Taiwan high Chl-a concentration decreased sharply before landfall, rebounded quickly to some degree after landfall, and restored gradually to the pre-typhoon level in about two weeks. The Chl-a concentration presented a negative correlation with the wind speed in the nearshore area during the typhoon, which is opposite to the response in the offshore waters. The phenomena may be attributable to onshore advection of low Chl-a water, coastal downwelling and intensified mixing, which together bring pre-typhoon surface Chl-a downward in the coastal area. In the offshore area, the typhoon may trigger increase of Chl-a concentration through uptake of nutrients by typhoon-induced upwelling and entrainment mixing.