Deep propagation of wind-generated near-inertial waves in the Northern South China Sea

doi:10.1016/j.dsr.2023.104226

IOCAS-IR > 海洋环流与波动重点实验室

	Deep propagation of wind-generated near-inertial waves in the Northern South China Sea
	Chen, Zifei1,2 ; Chen, Zhiwu 3; Yu, Fei 1,2,4; Qiang, Ren1,2 ; Liu, Xingchuan 1,2; Nan, Feng 1,2; Wang, Jianfeng 1,2; Si, Guangcheng 1,2; Hu, Yibo 1,4
	2024-02-01
发表期刊	DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
ISSN	0967-0637
卷号	204 页码:11
通讯作者	Yu, Fei([email protected]) ; Qiang, Ren([email protected])
摘要	Using a subsurface mooring deployed at a depth of -2290 m in the northern South China Sea, the characteristics of deep -propagating near -inertial waves (NIWs) (>1500 m) generated by a combination of a winter storm and a typhoon were examined. The NIWs had a large vertical wavelength and showed a high coherence in near -full water depth. Correspondingly, the strong vertical shear and energy of the NIWs were concentrated at vertical scales larger than -500 m. The average vertical group velocity was -160 m/day. The horizontal wavelength decreased from -600 km in the upper layer to a few tens of kilometers below a depth of 1500 m. Interestingly, the near -inertial energy did not decrease obviously at depths of 100-1500 m, where the average downward nearinertial energy flux (Fz) was (2.3 +/- 0.9) x 10(-3) W/m(2) and nearly equaled that at 100 m depth. Combined with the slab model, the mean Fz at a depth of 100-1500 m can reach 19%-43% of that in the mixed layer. During the deep propagation of NIWs, the near -inertial shear was not strong in the upper layer. However, in the deep layer, the total shear was dominated by deep -propagating NIWs and was significantly enhanced. Correspondingly, the estimated diapycnal diffusivity increased, reaching a maximum value of -270% of the averaged value. This study contributes to our understanding of the deep propagation of wind -generated NIWs in the open ocean.
关键词	Near -inertial waves Deep propagation Energy flux Diapycnal mixing
DOI	10.1016/j.dsr.2023.104226
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2022YFC3104105]; National Key Research and Development Program of China[2017YFC1403401]; National Natural Science Foundation of China[42306008]; National Natural Science Foundation of China[42176025]; National Natural Science Foundation of China[42376010]; China Postdoctoral Science Foundation[2023M743523]; China Postdoctoral Science Foundation[2023M733525]; Natural Science Foundation of Shandong Province[ZR2023QD077]; State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences[LTO2307]; Taishan Scholars Program tsqn[202306282]
WOS研究方向	Oceanography
WOS类目	Oceanography
WOS记录号	WOS:001165096900001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS关键词	INTERNAL WAVES ; TURBULENT DISSIPATION ; KINETIC-ENERGY ; CURRENTS ; OSCILLATIONS ; MESOSCALE ; SURFACE ; STORM ; SHEAR
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/184494
专题	海洋环流与波动重点实验室
通讯作者	Yu, Fei; Qiang, Ren
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 3.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	海洋环流与波动重点实验室
通讯作者单位	海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Chen, Zifei,Chen, Zhiwu,Yu, Fei,et al. Deep propagation of wind-generated near-inertial waves in the Northern South China Sea[J]. DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,2024,204:11.
APA	Chen, Zifei.,Chen, Zhiwu.,Yu, Fei.,Qiang, Ren.,Liu, Xingchuan.,...&Hu, Yibo.(2024).Deep propagation of wind-generated near-inertial waves in the Northern South China Sea.DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS,204,11.
MLA	Chen, Zifei,et al."Deep propagation of wind-generated near-inertial waves in the Northern South China Sea".DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS 204(2024):11.