Ecological and sediment dynamics response to typhoons passing from the east and west sides of the Changjiang (Yangtze River) Estuary and its adjacent sea area

doi:10.1016/j.margeo.2023.107188

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Ecological and sediment dynamics response to typhoons passing from the east and west sides of the Changjiang (Yangtze River) Estuary and its adjacent sea area
	Li, Wenjian 2,5; Wang, Zhenyan 1,2,3,4; Lee, Guan-hong 5; Huang, Haijun 1,2
刊名	MARINE GEOLOGY
	2024
卷号	467 页码:15
关键词	Typhoon trajectories Changjiang (Yangtze River) Estuary Ekman transport Phytoplankton bloom Sediment transport
ISSN号	0025-3227
DOI	10.1016/j.margeo.2023.107188
通讯作者	Wang, Zhenyan(zywang@qdio.ac.cn)
英文摘要	The hydrodynamic environment of the Changjiang (Yangtze River) Estuary and its adjacent sea area frequently experiences the influence of typhoon activities during the summer season. However, the differences in responses to typhoons with different trajectories are still poorly understood. Using buoy observations with synchronous satellite images, we investigated the sediment dynamics response to Typhoon Danas and Lekima, which passed through the Changjiang Estuary and its adjacent sea area from the east and west sides, respectively. The results indicated that wind forcings disrupted the semidiurnal cycles of ocean currents, leading to southeastward or northwestward residual currents during typhoons Danas and Lekima, respectively. The residual current velocity was typically below 150 mm/s under calm conditions but exceeded 200 mm/s, reaching up to 600 mm/s during typhoon conditions. Typhoon Danas (Lekima) generated onshore (offshore) Ekman transport in the surface layer, resulting in coastal downwelling (upwelling) and bottom offshore (onshore) currents due to the Ekman pumping (suction) effect. Typhoon Danas shifted the Changjiang Diluted Water from northeastward to southeastward, triggering the post-typhoon phytoplankton bloom, while Typhoon Lekima strengthened and even drove the detachment of the Changjiang Diluted Water. These findings suggest the need for different preventive strategies based on the trajectory of each typhoon, considering the potential land damage caused by west-side typhoons and the occurrence of post-typhoon Harmful Algal Blooms resulting from east-side typhoons. Additionally, sediment transport primarily occurred in the bottom layer, governed by the combined effect of tidal currents and typhoon-driven bottom currents. Typhoon Danas, located on the east side of the Changjiang Estuary, led to offshore (positive cross-shore) sediment flux and southwestward (negative along-shore) sediment flux. Conversely, Typhoon Lekima, situated on the west side, caused onshore (negative cross-shore) sediment flux and northeastward (positive along-shore) sediment flux. These findings suggest that existing sediment records may underestimate the frequency and intensity of historical typhoon activities.
资助项目	Chinese Academy of Sciences[XDB42010203] ; National Natural Science Foundation of China[42176090] ; National Natural Science Foundation of China[42306059] ; Key Laboratory of Marine Geology and Environment, Chinese Academy of Sciences[MGE2021KG07] ; China Postdoctoral Science Foundation[2020M682246] ; Postdoctoral Applied Research Project of Qingdao ; Ministry of Oceans and Fisheries, Korea
WOS关键词	YELLOW SEA ; PHYTOPLANKTON RESPONSES ; VERTICAL MIGRATION ; INNER SHELF ; CHINA SEA ; TRANSPORT ; PLUME ; WATER ; PARTICLES ; COMMUNITY
WOS研究方向	Geology ; Oceanography
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:001140645400001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/184314]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Wang, Zhenyan
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China 4.Shandong Univ Sci & Technol, Qingdao 266590, Peoples R China 5.Inha Univ, Dept Oceanog, 100 Inharo, Incheon 22212, South Korea
推荐引用方式 GB/T 7714	Li, Wenjian,Wang, Zhenyan,Lee, Guan-hong,et al. Ecological and sediment dynamics response to typhoons passing from the east and west sides of the Changjiang (Yangtze River) Estuary and its adjacent sea area[J]. MARINE GEOLOGY,2024,467:15.
APA	Li, Wenjian,Wang, Zhenyan,Lee, Guan-hong,&Huang, Haijun.(2024).Ecological and sediment dynamics response to typhoons passing from the east and west sides of the Changjiang (Yangtze River) Estuary and its adjacent sea area.MARINE GEOLOGY,467,15.
MLA	Li, Wenjian,et al."Ecological and sediment dynamics response to typhoons passing from the east and west sides of the Changjiang (Yangtze River) Estuary and its adjacent sea area".MARINE GEOLOGY 467(2024):15.