Direct Evidence of Standing Internal Tide West of the Luzon Strait Observed by a Large-Scale Observation Array

doi:10.1175/JPO-D-23-0043.1

IOCAS-IR > 海洋环流与波动重点实验室

	Direct Evidence of Standing Internal Tide West of the Luzon Strait Observed by a Large-Scale Observation Array
	Wang, Min 1,2; Zhu, Xiao-hua 1,2,3; Zheng, Hua 1,2; Chen, Juntian 2; Liu, Zhao-jun 2; Ren, Qiang4,5 ; Liu, Yansong 4,5,6; Nan, Feng 4,5,6; Yu, Fei 4,5,6,7; Li, Qiang 8
	2023-09-01
发表期刊	JOURNAL OF PHYSICAL OCEANOGRAPHY
ISSN	0022-3670
卷号	53 期号:9 页码:2263-2280
通讯作者	Zhu, Xiao-hua(xhzhu@sio.org.cn)
摘要	Using a large-scale observation array of 27 simultaneous pressure-recording inverted echo sounders (PIESs), the standing wave features of the mode-1 M2 internal tide west of the Luzon Strait (LS) were identified. These features exhibited nonmonotonic spatial phase shifts and half-wavelength amplitude modulation, resulting in spatially varying amplitudes under PIES observations, which have not been previously observed in field observations west of the LS. Satellite altimeter measurements also identified standing-wave patterns consistent with the PIES observations. These pat-terns emanated from interference between the northwestward and southeastward beams from the LS and the slope of the southern Taiwan Strait, respectively. Near the LS, the two beams superimposed into partial standing waves, whereas the superimposed waves tended to become perfect standing waves near the slope of the southern Taiwan Strait. The nodes and antinodes of the wave shifted under the influence of an anticyclonic eddy. The eddy-induced background current modified the phase speed of the internal tides, and the superimposed standing-wave nodes and antinodes deflected clockwise. The node shifted during three anticyclonic eddy events, and two stations on two sides of the wave node showed opposite variations in amplitude.SIGNIFICANCE STATEMENT: The internal tidal constituent (M2) propagating in opposite directions can result in standing waves, which have been frequently observed in global oceans but were absent west of the Luzon Strait (LS). Our observations (based on a large-scale array west of the LS) discovered a standing M2 internal tide, which stems from interference between the northwestward beams emanating from the LS and southeastward beams from the slope of the southern Taiwan Strait. Anticyclonic eddies play important roles in adjusting the amplitude of internal tides by deflecting the standing-wave nodes and antinodes clockwise. The study facilitates the understanding of the energy distribution and mixing processes west of the LS and provides a fresh perspective on the dynamic relationship between mesoscale perturbations and internal tides.
关键词	Eddies Internal waves Tides In situ oceanic observations
DOI	10.1175/JPO-D-23-0043.1
收录类别	SCI
语种	英语
资助项目	Oceanic Interdisciplinary Program of Shanghai Jiao Tong University[SL2021MS021] ; Innovation Group Project of Southern Marine Science and Engineer-ing Guangdong Laboratory (Zhuhai)[311020004] ; Global Climate Changes and Air-sea Interaction Program[GASI-02-PAC-ST-Wwin]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:001106824200001
出版者	AMER METEOROLOGICAL SOC
WOS关键词	SOUTH CHINA SEA ; LONG-RANGE PROPAGATION ; SURFACE MANIFESTATION ; SUBMARINE-CANYON ; BAROCLINIC TIDES ; GENERATION SITES ; WAVES ; OCEAN ; MESOSCALE ; ALTIMETRY
引用统计	被引频次：4[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/337002/184026
专题	海洋环流与波动重点实验室
通讯作者	Zhu, Xiao-hua
作者单位	1.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai, Peoples R China 2.Minist Nat Resources, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou, Peoples R China 3.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai, Peoples R China 4.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 5.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China 6.Pilot Natl Lab Marine Sci & Technol Qingdao, Marine Dynam Proc & Climate Funct Lab, Qingdao, Peoples R China 7.Univ Chinese Acad Sci, Beijing, Peoples R China 8.Tsinghua Univ, Grad Sch Shenzhen, Shenzhen, Peoples R China
推荐引用方式 GB/T 7714	Wang, Min,Zhu, Xiao-hua,Zheng, Hua,et al. Direct Evidence of Standing Internal Tide West of the Luzon Strait Observed by a Large-Scale Observation Array[J]. JOURNAL OF PHYSICAL OCEANOGRAPHY,2023,53(9):2263-2280.
APA	Wang, Min.,Zhu, Xiao-hua.,Zheng, Hua.,Chen, Juntian.,Liu, Zhao-jun.,...&Li, Qiang.(2023).Direct Evidence of Standing Internal Tide West of the Luzon Strait Observed by a Large-Scale Observation Array.JOURNAL OF PHYSICAL OCEANOGRAPHY,53(9),2263-2280.
MLA	Wang, Min,et al."Direct Evidence of Standing Internal Tide West of the Luzon Strait Observed by a Large-Scale Observation Array".JOURNAL OF PHYSICAL OCEANOGRAPHY 53.9(2023):2263-2280.