Dynamics of Eddy Generation in the Central Bay of Bengal
文献类型：期刊论文
| 作者 | Qi, Yiquan; Du, Yan1; Chen, Xiao; Cheng, Xuhua2; McCreary, Julian P.; Qiu, Bo4 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2018 |
| 卷号 | 123期号:9页码:6861 |
| 关键词 | Bay of Bengal mesoscale eddy reduced-gravity model |
| ISSN号 | 2169-9275 |
| DOI | 10.1029/2018JC014100 |
| 英文摘要 | Eddy activity in the central Bay of Bengal (BoB) is revealed using satellite observations and hydrographic data. Altimetric data show that eddies are generated near the eastern boundary, propagate southwestward, and have periods predominantly in the 30- to 120-day band. Temperature profiles from the Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA) buoy at 90 degrees E, 15 degrees N, have their highest amplitude in the depth range of the thermocline, indicating that the eddies are associated with a vertical motion of the thermocline (a first-baroclinic-mode response). To investigate the cause of the eddies, we obtained a suite of solutions to nonlinear and linear versions of a 11/2-layer (reduced-gravity) model. They demonstrate that equatorial wind forcing, Myanmar bump and Andaman Island, and nonlinearity are all essential for eddy formation. Among the nonlinear terms, the advection terms are the primary cause. This study combines observations and model to understand eddy generation in the central Bay of Bengal. When equatorial wind-driven downwelling (upwelling) Kelvin waves propagate to the tip of the Irrawaddy Delta off Myanmar, anticyclonic (cyclonic) eddies are generated there that subsequently propagate southwestward. The eddies are mainly driven by equatorial zonal winds, with both nonlinearity and coastline geometry essential for eddy generation. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17575]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Univ Hawaii Manoa, Dept Oceanog, Honolulu, HI 96822 USA 2.Hohai Univ, Coll Oceanog, Nanjing, Jiangsu, Peoples R China 3.Hohai Univ, Minist Educ, Key Lab Coastal Disaster & Def, Nanjing, Jiangsu, Peoples R China 4.Cheng, Xuhua; McCreary, Julian P.] Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA 5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Yiquan,Du, Yan,Chen, Xiao,et al. Dynamics of Eddy Generation in the Central Bay of Bengal[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2018,123(9):6861, 6875. |
| APA | Qi, Yiquan,Du, Yan,Chen, Xiao,Cheng, Xuhua,McCreary, Julian P.,&Qiu, Bo.(2018).Dynamics of Eddy Generation in the Central Bay of Bengal.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,123(9),6861. |
| MLA | Qi, Yiquan,et al."Dynamics of Eddy Generation in the Central Bay of Bengal".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 123.9(2018):6861. |
入库方式： OAI收割
来源：南海海洋研究所
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