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学科主题: Geochemistry & Geophysics
题名: Asymptotic theory of the wind-driven boundary jet's stability
作者: Chao, JP ; Feng, LC ; Wang, DX
通讯作者: 321019chao@vip.sina.com
关键词: South China Sea ; western boundary jet ; stability of the boundary wave ; coupled wave ; equivalent shallow water model
刊名: CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
发表日期: 2006
卷: 49, 期:3, 页:642-649
收录类别: sci
部门归属: Natl Marine Environm Forecast Ctr, Beijing 100081, Peoples R China; SOA, Inst Oceanog 1, Qingdao 266061, Peoples R China; Chinese Acad Sci, LASG, Inst Atmospher Phys, Beijing 100029, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; Chinese Acad Sci, Key Lab Trop Marine Environm Dynam, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China
项目归属: LED
摘要: In observation, there is a southward jet in the western boundary of the South China Sea (SCS), when the north wind is strong in winter. The jet stream can bend into wave, even eddy under certain conditions. In the text, we used equivalent shallow water model and truncated model method to analyse the stability of the jet, and pointed out the conditions of the appearing of instable wave. The results indicate that when the southward wind-driven current is strong and narrow, the metamorphic Kelvin wave and wind stress forced "topographic Rossby-wave" can couple into instable wave in the long-wave period. When the wavelength of the instable wave is about 200 km, it spreads northward at a speed about 0.2 m . s(-1), and the amplitude of the wave can increase to e multiples in about 1.5 days. Further analyses indicate that the northward wind-driven current in the western boundary of the ocean is stable in summer. The observation can partly be explained by these conclusions.
原文出处: 查看原文
WOS记录号: WOS:000237873000006
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/5797
Appears in Collections:热带海洋环境动力实验室(LTO)_期刊论文

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Chao, JP; Feng, LC; Wang, DX.Asymptotic theory of the wind-driven boundary jet's stability,CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2006,49(3):642-649
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