Satellite observations of the small-scale cyclonic eddies in the western South China Sea
Liu, F.; Tang, S.; Chen, C.; sltang2009@gmail.com
2015
发表期刊BIOGEOSCIENCES
卷号12期号:2页码:299-305
文章类型1726-4170
摘要High-resolution ocean color observations offer an opportunity to investigate the oceanic small-scale processes. In this study, the Medium Resolution Imaging Spectrometer (MERIS) daily 300m data were used to study small-scale processes in the western South China Sea. It is indicated that the cyclonic eddies with horizontal scales of 10 km are frequently observed during the upwelling season of each year over the 2004-2009 period. These small-scale eddies were generated in the vicinity of the southern front of the cold tongue, and then propagated eastward with a speed of approximately 12 cm s(-1). This propagation speed was consistent with the velocity of the western boundary current. As a result, the small-scale eddies kept the high levels of phytoplankton rotating away from the coastal areas, resulting in the accumulation of phytoplankton in the interior of the eddies. The generation of the small-scale eddies may be associated with strengthening of the relative movement between the rotation speed of the anticyclonic mesoscale eddies and the offshore transport. With the increases of the normalized rotation speed of the anticyclonic mesoscale eddies relative to the offshore transport, the offshore current became a meander under the impacts of the anticyclonic mesoscale eddies. The meandered cold tongue and instability front may stimulate the generation of the small-scale eddies. Unidirectional uniform wind along the cold tongue may also contribute to the formation of the small-scale eddies.
部门归属[Liu, F.] Sun Yat Sen Univ, Sch Marine Sci, Guangzhou 510006, Guangdong, Peoples R China; [Tang, S.; Chen, C.] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China ; LTO
学科领域Environmental Sciences & Ecology ; Geology
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/15127
专题热带海洋环境国家重点实验室(LTO)
通讯作者sltang2009@gmail.com
推荐引用方式
GB/T 7714
Liu, F.,Tang, S.,Chen, C.,et al. Satellite observations of the small-scale cyclonic eddies in the western South China Sea[J]. BIOGEOSCIENCES,2015,12(2):299-305.
APA Liu, F.,Tang, S.,Chen, C.,&sltang2009@gmail.com.(2015).Satellite observations of the small-scale cyclonic eddies in the western South China Sea.BIOGEOSCIENCES,12(2),299-305.
MLA Liu, F.,et al."Satellite observations of the small-scale cyclonic eddies in the western South China Sea".BIOGEOSCIENCES 12.2(2015):299-305.
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