Controlling effects of mesoscale eddies on thermohaline structure and in situ chlorophyll distribution in the western North Pacific

doi:10.1016/j.jmarsys.2017.07.002

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	Controlling effects of mesoscale eddies on thermohaline structure and in situ chlorophyll distribution in the western North Pacific
	Gao, Wei 1,2,3; Wang, Zhenyan 1,2,4; Zhang, Kainan 1,2,3
刊名	JOURNAL OF MARINE SYSTEMS
	2017-11-01
卷号	175 页码:24-35
关键词	Mesoscale Eddy Thermohaline Structure Subsurface Chlorophyll Maximum Layer Pycnocline Western North Pacific
DOI	10.1016/j.jmarsys.2017.07.002
文献子类	Article
英文摘要	Based on the conductivity, temperature and depth (CTD) data collected at 93 hydrographic stations during a marine cruise and on contemporary satellite altimeter observations, a series of eddies have been observed passing over the stratified upper water of the Parece Vela Basin. The results from hydrographic measurements and in situ chlorophyll fluorescence measurements have revealed that these eddies exerted significant controlling effects on the thermohaline structure and chlorophyll distribution, especially on the prevalent subsurface chlorophyll maximum layer (SCML). Based on these observations and particulate beam attenuation coefficient (c(p)) data, the in situ phytoplankton bloom around the pycnocline can be largely attributable to the formation of a well-developed SCML in the studied system. The uplift of the cold subsurface water within the cyclone, shoaling the pycnocline to a shallower layer, resulted in a low-temperature anomaly and different salinity anomalies at different depths. This uplift in the cyclone further caused the SCML to appear at a shallower depth with a higher in situ chlorophyll concentration than that in the normal domain. Conversely, the sinking of the warm surface water to the subsurface layer within the anticyclone depressed the pycnocline to a deeper layer and generated a high-temperature anomaly and opposite salinity anomalies compared with the cyclone. The sinking of the pycnocline within the anticyclone considerably influenced the characteristics of the SCML, which had a deeper depth and a lower in situ chlorophyll concentration than that of the normal sea. This study contributes rare quasi-synchronous CTD observations capturing mesoscale eddies and provides valuable descriptions of the variations in the SCML under the influence of mesoscale eddies based on in situ optical measurements from the seldom-discussed western North Pacific. (C) 2017 Elsevier B.V. All rights reserved.
语种	英语
WOS记录号	WOS:000411420700003
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/143202]
专题	海洋研究所_海洋地质与环境重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Gao, Wei,Wang, Zhenyan,Zhang, Kainan. Controlling effects of mesoscale eddies on thermohaline structure and in situ chlorophyll distribution in the western North Pacific[J]. JOURNAL OF MARINE SYSTEMS,2017,175:24-35.
APA	Gao, Wei,Wang, Zhenyan,&Zhang, Kainan.(2017).Controlling effects of mesoscale eddies on thermohaline structure and in situ chlorophyll distribution in the western North Pacific.JOURNAL OF MARINE SYSTEMS,175,24-35.
MLA	Gao, Wei,et al."Controlling effects of mesoscale eddies on thermohaline structure and in situ chlorophyll distribution in the western North Pacific".JOURNAL OF MARINE SYSTEMS 175(2017):24-35.