IOCAS-IR  > 海洋环流与波动重点实验室
Long-range propagation and associated variability of internal tides in the South China Sea
Xu, Zhenhua1,2,3; Liu, Kun1,2,4; Yin, Baoshu1,2,3; Zhao, Zhongxiang5; Wang, Yang1,2,4; Li, Qun6
2016-11-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
Volume121Issue:11Pages:8268-8286
SubtypeArticle
AbstractThe variability of internal tides during their generation and long-range propagation in the South China Sea (SCS) is investigated by driving a high-resolution numerical model. The present study clarifies the notably different processes of generation, propagation, and dissipation between diurnal and semidiurnal internal tides. Internal tides in the SCS originate from multiple source sites, among which the Luzon Strait is dominant, and contributes approximately 90% and 74% of the baroclinic energy for M-2 and K-1, respectively. To the west of the Luzon Strait, local generation of K-1 internal tides inside the SCS is more energetic than the M-2 tides. Diurnal and semidiurnal internal tides from the Luzon Strait radiate into the SCS in a north-south asymmetry but with different patterns because of the complex two-ridge system. The tidal beams can travel across the deep basin and finally arrive at the Vietnam coast and Nansha Island more than 1000-1500 km away. During propagation, M-2 internal tides maintain a southwestward direction, whereas K-1 exhibit complicated wave fields because of the superposition of waves from local sources and island scattering effects. After significant dissipation within the Luzon Strait, the remaining energy travels into the SCS and reduces by more than 90% over a distance of approximate to 1000 km. Inside the SCS, the K-1 internal tides with long crests and flat beam angles are more influenced by seafloor topographical features and thus undergo apparent dissipation along the entire path, whereas the prominent dissipation of M-2 internal tides only occurs after their arrival at Zhongsha Island.
KeywordInternal Tides South China Sea Tidal Mixing Numerical Simulation
DOI10.1002/2016JC012105
Indexed BySCI
Language英语
WOS IDWOS:000392841000018
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136296
Collection海洋环流与波动重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean & Climate Dynam, Qingdao, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA
6.Polar Res Inst China, Shanghai, Peoples R China
First Author Affilication中国科学院海洋研究所
Recommended Citation
GB/T 7714
Xu, Zhenhua,Liu, Kun,Yin, Baoshu,et al. Long-range propagation and associated variability of internal tides in the South China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2016,121(11):8268-8286.
APA Xu, Zhenhua,Liu, Kun,Yin, Baoshu,Zhao, Zhongxiang,Wang, Yang,&Li, Qun.(2016).Long-range propagation and associated variability of internal tides in the South China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,121(11),8268-8286.
MLA Xu, Zhenhua,et al."Long-range propagation and associated variability of internal tides in the South China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 121.11(2016):8268-8286.
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