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Effect of background parabolic current on characteristics and energetics of internal solitary waves by numerical simulation
Lu Haibin; Xie Jieshuo; Yao Yuan; Xu Jiexin; Chen Zhiwu; He Yinghui; Cai Shuqun; Cai, SQ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
2016
Source PublicationACTA OCEANOLOGICA SINICA
Volume35Issue:1Pages:2016-01-10
AbstractBased on modifications of the observed background parabolic current in upper layer of the northeastern South China Sea (SCS), the effects of eight kinds of background currents on the characteristics and energy conversion of internal solitary waves (ISWs) are investigated by an Internal Gravity Wave (IGW) model. It is found that, although the background current has little effect on the number of the generated ISWs, it reduces the resulted phase speed of ISW. When the background parabolic current appears with its lower boundary near or above the main thermocline, the ISW amplitude and the depth of the isopycnal undergoing maximum displacement increase; when the background parabolic current curvature is reduced, the ISW amplitude and the ratio of baroclinic to barotropic energy reduce, whilst the phase speed of ISW, the baroclinic energy, and the ratio of baroclinic kinetic energy (KE) to available potential energy (APE) increase; when the lower boundary of background parabolic current extends down to the seabed and the background current curvature is reduced, the ISW amplitude and phase speed decrease, whilst the barotropic kinetic energy, the baroclinic energy and the ratio of KE to APE increase. At a whole depth, when the lower background current curvature is reduced and the upper current curvature is increased, the ISW amplitude, and phase speed, the ratio of baroclinic to barotropic energy, the baroclinic energy, and the ratio of KE to APE all increase.
Department[Lu Haibin; Xie Jieshuo; Xu Jiexin; Chen Zhiwu; He Yinghui; Cai Shuqun] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Lu Haibin] Huaihai Inst Technol, Sch Geodesy & Geomat Engn, Lianyungang 222005, Peoples R China; [Lu Haibin; Xie Jieshuo] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Yao Yuan] State Ocean Adm, Qinhuangdao Marine Environm Monitoring Cent Stn, Qinhuangdao 066002, Peoples R China ; LTO
KeywordInternal Solitary Waves Background Current Baroclinic Energy South China Sea
Subject AreaOceanography
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15583
Collection热带海洋环境国家重点实验室(LTO)
Corresponding AuthorCai, SQ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
Recommended Citation
GB/T 7714
Lu Haibin,Xie Jieshuo,Yao Yuan,et al. Effect of background parabolic current on characteristics and energetics of internal solitary waves by numerical simulation[J]. ACTA OCEANOLOGICA SINICA,2016,35(1):2016-01-10.
APA Lu Haibin.,Xie Jieshuo.,Yao Yuan.,Xu Jiexin.,Chen Zhiwu.,...&Cai, SQ .(2016).Effect of background parabolic current on characteristics and energetics of internal solitary waves by numerical simulation.ACTA OCEANOLOGICA SINICA,35(1),2016-01-10.
MLA Lu Haibin,et al."Effect of background parabolic current on characteristics and energetics of internal solitary waves by numerical simulation".ACTA OCEANOLOGICA SINICA 35.1(2016):2016-01-10.
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