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学科主题: Oceanography
题名: Intraseasonal variability of sea surface height in the Bay of Bengal
作者: [Cheng, Xuhua ; Qi, Yiquan ; Du, Yan] Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China ; [Cheng, Xuhua ; Xie, Shang-Ping ; McCreary, Julian P.] Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA ; [Xie, Shang-Ping] Ocean Univ China, Phys Oceanog Lab, Qingdao, Peoples R China
通讯作者: xuhuacheng@scsio.ac.cn
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
发表日期: 2013
卷: 118, 期:2, 页:816-830
部门归属: LTO
资助者: This work was supported by the National Basic Research Program of China (2010CB950303, 2012CB955600), the Natural Science Foundation of China (41176023, 41176024), U.S. NSF, NASA, and JAMSTEC. The work was initiated when X. H. C. was a visiting scholar at the International Pacific Research Center (IPRC). X. H. C. is also sponsored by the "Youth Innovation Promotion Association", CAS. The constructive remarks by two anonymous reviewers are greatly appreciated. The IPRC/SOEST Publication 945/8852.
摘要: Intraseasonal variability (ISV) of sea surface height (SSH) over the Bay of Bengal (BoB) is studied using altimetry data and an eddy-resolving ocean model. In both the model hindcast and satellite observations, large SSH ISV is found along the eastern and northern coasts of the BoB, in the western BoB, and in a zonal band across the Bay centered near 5 degrees N. The ISV displays a clear seasonality. In the western BoB, it reaches its annual maximum in spring, whereas it does so in summer and autumn southeast of Sri Lanka. Driven by equatorial intraseasonal winds, equatorial Kelvin waves propagate eastward, reach the western coast of Sumatra, and reflect there to propagate around the perimeter of the BoB as coastally trapped waves. Two distinct bands of high eddy activity are detected in the western and central BoB, respectively. In both bands, isolated eddies propagate southwestward. Eddy formation in the eddy train in the central Bay is linked to the coastal wave as it bends around the corner of the Irrawaddy Delta off Myanmar. Eddy activity contributes to the high ISV in the central Bay to some extent. An energetics analysis indicates that high total eddy energy in the western BoB is due to barotropic/baroclinic instability of the mean current. Citation: Cheng, X., S.-P. Xie, J. P. McCreary, Y. Qi, and Y. Du (2013), Intraseasonal variability of sea surface height in the Bay of Bengal, J. Geophys. Res. Oceans, 118, 816-830, doi:10.1002/jgrc.20075.
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000317840700018
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10932
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[Cheng, Xuhua; Qi, Yiquan; Du, Yan] Chinese Acad Sci, State Key Lab Trop Oceanog, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Cheng, Xuhua; Xie, Shang-Ping; McCreary, Julian P.] Univ Hawaii Manoa, Int Pacific Res Ctr, Honolulu, HI 96822 USA; [Xie, Shang-Ping] Ocean Univ China, Phys Oceanog Lab, Qingdao, Peoples R China.Intraseasonal variability of sea surface height in the Bay of Bengal,JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2013,118(2):816-830
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