Seasonal characteristics of internal tides and their responses to background currents in the Luzon Strait

doi:10.1007/s13131-015-0747-z

IOCAS-IR > 海洋环流与波动重点实验室

	Seasonal characteristics of internal tides and their responses to background currents in the Luzon Strait
	Fang Yong 1; Hou Yijun 2; Jing Zhiyou 1
	2015-11-01
发表期刊	ACTA OCEANOLOGICA SINICA
卷号	34 期号:11 页码:46-54
文章类型	Article
摘要	The spatial-temporal characteristics of internal tides (ITs) in the southwest Luzon Strait are examined, based on 9-month mooring current records from autumn 2008 to summer 2009. The results of spectral analysis show that the ITs in diurnal and semidiurnal frequencies are prominent at the mooring site, especially for the clockwise rotary component. The diurnal ITs are mostly dominated by the first mode except for that in spring when the second mode is relatively predominant. The semidiurnal ITs display a variable multimodal structure. Moreover, an apparent difference is detected in the kinetic energy of diurnal ITs. The energy is strongest in winter, and followed by that in summer, whereas the value is smallest in spring and autumn. It is suggested that the incoherent motions are responsible for the significant seasonal variations of diurnal ITs, reflecting interaction between diurnal ITs and the varying background conditions. However, the semidiurnal ITs are independent of seasonal change, whose energy is smaller and only one-third of the diurnal energy in winter. Nevertheless, the abnormal variations of semidiurnal ITs are also related to the variable background conditions. The incoherent semidiurnal constituent accounts for about 37% of the total semidiurnal tidal kinetic energy, but the diurnal tidal motions contain fewer incoherent component (22.2%).
关键词	Internal Tide Seasonal Variation Background Current Luzon Strait
DOI	10.1007/s13131-015-0747-z
收录类别	SCI
语种	英语
WOS记录号	WOS:000362919700007
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/54377
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves KLOCAW, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Fang Yong,Hou Yijun,Jing Zhiyou. Seasonal characteristics of internal tides and their responses to background currents in the Luzon Strait[J]. ACTA OCEANOLOGICA SINICA,2015,34(11):46-54.
APA	Fang Yong,Hou Yijun,&Jing Zhiyou.(2015).Seasonal characteristics of internal tides and their responses to background currents in the Luzon Strait.ACTA OCEANOLOGICA SINICA,34(11),46-54.
MLA	Fang Yong,et al."Seasonal characteristics of internal tides and their responses to background currents in the Luzon Strait".ACTA OCEANOLOGICA SINICA 34.11(2015):46-54.

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