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学科主题: Oceanography
题名: Three-dimensional oceanic eddy analysis in the Southern California Bight from a numerical product
作者: Dong, CM ; Lin, XY ; Liu, Y ; Nencioli, F ; Chao, Y ; Guan, YP ; Chen, D ; Dickey, T ; McWilliams, JC
通讯作者: cdong@atmos.ucla.edu
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
发表日期: 2012
卷: 117, 页:C00H14
部门归属: [Dong, Changming; McWilliams, James C.] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA; [Lin, Xiayan; Liu, Yu; Guan, Yuping] Chinese Acad Sci, State Key Lab Trop Oceanog, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Lin, Xiayan; Liu, Yu] Chinese Acad Sci, Grad Univ, Beijing, Peoples R China; [Nencioli, Francesco] Univ Aix Marseille 2, Lab Oceanog Phys & Biogeochim, UMR CNRS IRD 6535, Ctr Oceanol Marseille, F-13288 Marseille 9, France; [Chao, Yi] CALTECH, NASA Jet Prop Lab, Pasadena, CA 91109 USA; [Chao, Yi] Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90095 USA; [Chen, Dake] SIO SOA, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China; [Dickey, Tommy] Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93106 USA
项目归属: LTO
摘要: With eight islands, complex coastlines and bottom topography, strong wind curls, and frequent upwelling fronts, the Southern California Bight (SCB) is an area with strong eddy activity. By applying an automated eddy detection scheme to a 12 year high-resolution numerical product of the oceanic circulation in the SCB, a three-dimensional eddy data set is developed. It includes information for each eddy's location, polarity, intensity, size, boundary, and moving path at nine vertical levels. Through a series of statistical analyses applied to the eddy data set, three-dimensional statistical characteristics of mesoscale and submeoscale eddy variations in the SCB are elucidated; these shed light on how eddies are generated, evolve, and terminate. A significant percentage of eddies is found to be generated around islands and headlands along the coastline, which indicates that islands in the SCB play a vital role in eddy generation. Three types of eddies, based on shape, are identified from the numerical product: bowl, lens, and cone. A dynamic analysis shows that some submesoscale eddies with finite local Rossby numbers tend to be ageostrophic balanced while mesoscale eddies are in geostrophic balance. The present research results are useful for the interpretation of data sets obtained during the interdisciplinary Santa Barbara Channel Radiance in a Dynamic Ocean (RaDyo) field experiment conducted on September 3-25, 2008.
语种: 英语
WOS记录号: WOS:000298932000002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10219
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Dong, CM; Lin, XY; Liu, Y; Nencioli, F; Chao, Y; Guan, YP; Chen, D; Dickey, T; McWilliams, JC.Three-dimensional oceanic eddy analysis in the Southern California Bight from a numerical product,JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2012,117():C00H14
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