Effect of background parabolic current on characteristics and energetics of internal solitary waves by numerical simulation

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	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
刊名	ACTA OCEANOLOGICA SINICA
	2016
卷号	35 期号:1 页码:2016-01-10
关键词	internal solitary waves background current baroclinic energy South China Sea
通讯作者	Cai, SQ (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China.
中文摘要	Based 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.
学科主题	Oceanography
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15583]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 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 Shuqun.(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.