Effect of a fast-moving tropical storm Washi on phytoplankton in the northwestern South China Sea

doi:10.1002/2016JC012286

IOCAS-IR > 海洋环流与波动重点实验室

	Effect of a fast-moving tropical storm Washi on phytoplankton in the northwestern South China Sea
	Zhao, Hui 1,2; Pan, Jiayi 2,3,4; Han, Guoqi 5; Devlin, Adam T.2; Zhang, Shuwen 1; Hou, Yijun 6
	2017-04-01
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
卷号	122 期号:4 页码:3404-3416
文章类型	Article
摘要	Tropical cyclones may augment nutrients in the ocean surface layer through mixing, entrainment, and upwelling, triggering phytoplankton blooms in oligotrophic waters such as the South China Sea (SCS). Previous studies focused mainly on responses of marine environments to strong or slow-moving typhoons in the SCS. In this study, we analyze variations of chlorophyll a (Chl a) and oceanic conditions in the continental shelf region east of Hainan Island during the fast-moving tropical storm Washi and investigate its influences on phytoplankton bloom and related dynamic mechanisms. Results indicate that there was significant variation of Chl a concentration in the continental shelf region, with low values (about 0.1 mg m(-3)) before the storm and a 30% increase after the storm. This increase was spatially variable, much larger nearshore than offshore. Power spectral analysis of Acoustic Doppler Current Profiler (ADCP) data at a shelf site near the study region reveals strong near-inertial oscillations (NIOs) in the upper layer, with a period of about 36 h, close to the local inertial period. The NIOs intensified mixing and modified the stratification of the upper layer, inducing uplift of nutrients and Chl a into the mixed layer from below, and leading to surface Chl a increase. The relatively shallow nutricline and thermocline in the continental shelf region before the storm were favorable for upwelling of nutrients and generation of NIOs. Advection of nutrients from enhanced runoff during and after the storm may be responsible for the larger increase of the Chl a nearshore.
关键词	Tropical Storm Chlorophyll a Primary Productivity Near-inertial Oscillation Mixing
DOI	10.1002/2016JC012286
收录类别	SCI
语种	英语
WOS记录号	WOS:000402139900043
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.qdio.ac.cn/handle/337002/136848
专题	海洋环流与波动重点实验室
作者单位	1.Guangdong Ocean Univ, Zhanjiang, Peoples R China 2.Chinese Univ Hong Kong, Inst Space & Earth Informat Sci, Hong Kong, Hong Kong, Peoples R China 3.Chinese Univ Hong Kong, Shenzhen Res Inst, Shenzhen, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Coll Marine Sci, Nanjing, Jiangsu, Peoples R China 5.Fisheries & Oceans Canada, Northwest Atlantic Fisheries Ctr, St John, NF, Canada 6.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Hui,Pan, Jiayi,Han, Guoqi,et al. Effect of a fast-moving tropical storm Washi on phytoplankton in the northwestern South China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2017,122(4):3404-3416.
APA	Zhao, Hui,Pan, Jiayi,Han, Guoqi,Devlin, Adam T.,Zhang, Shuwen,&Hou, Yijun.(2017).Effect of a fast-moving tropical storm Washi on phytoplankton in the northwestern South China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,122(4),3404-3416.
MLA	Zhao, Hui,et al."Effect of a fast-moving tropical storm Washi on phytoplankton in the northwestern South China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 122.4(2017):3404-3416.

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