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 Yong1; Hou Yijun2; Jing Zhiyou1
2015-11-01
Source PublicationACTA OCEANOLOGICA SINICA
Volume34Issue:11Pages:46-54
SubtypeArticle
AbstractThe 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%).
KeywordInternal Tide Seasonal Variation Background Current Luzon Strait
DOI10.1007/s13131-015-0747-z
Indexed BySCI
Language英语
WOS IDWOS:000362919700007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/54377
Collection海洋环流与波动重点实验室
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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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