The Three-Dimensional Internal Tide Radiation and Dissipation in the Mariana Arc-Trench System

doi:10.1029/2020JC016502

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	The Three-Dimensional Internal Tide Radiation and Dissipation in the Mariana Arc-Trench System
	Zhao, Chen 1,5,6; Xu, Zhenhua 1,4,5,6,7; Robertson, Robin 3; Li, Qun 2; Wang, Yang 1,5,6,7; Yin, Baoshu 1,4,5,6,7
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2021-05-01
卷号	126 期号:5 页码:23
关键词	Mariana Arc Abyssal Ocean internal tide numerical energy
ISSN号	2169-9275
DOI	10.1029/2020JC016502
通讯作者	Xu, Zhenhua(xuzhenhua@qdio.ac.cn)
英文摘要	Internal tides are energetic in the Mariana arc, but their three-dimensional radiation and dissipation remain unexplored, particularly the trench-arc-basin impacts. Here, the generation, propagation and dissipation of M-2 internal tides over the Mariana area are examined using a series of observation-supported high-resolution simulations. The M-2 barotropic to baroclinic conversion rate amounts to 8.35 GW, of which two arc-shaped ridges contribute similar to 81% of the generated energy. The contributions to generation by the Mariana basin and deep trench are weak. Nevertheless, they are important in modulating the energy radiation and dissipation, since tidal beams can spread to these areas. The Mariana ridges radiate the westward-focused and eastward-spreading tidal beams. This is very consistent with the altimetric measurements. The resonance in the ridge center enhances the westward converging beam, which can travel across the Palau Ridge, 800 km away. In contrast, the eastward beams propagate over a limited lateral range, but can radiate and dissipate significant energy in the deep water column, reaching even to the abyssal Mariana trench. The direct estimation from the model results reveals the dissipation's multilayer vertical profile in the entire water column, and is well consistent with the finescale parameterization estimate based on vertical strain. However, the estimate of an oft-used energy balance method, which typically assumes an exponentially decaying vertical structure function for the dissipation rate based on distance above the seafloor, is largely inconsistent with the measurements. Our findings highlight the complexity of three-dimensional radiation paths and dissipation map of internal tides in the Mariana area.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA22050202] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; National Key Research and Development Program of China ; National Natural Science Foundation of China[92058202] ; National Natural Science Foundation of China[2017YFA0604102] ; National Natural Science Foundation of China[2016YFC1401404] ; National Natural Science Foundation of China[91858103] ; CAS Key Research Program of Frontier Sciences[QYZDB-SSW-DQC024] ; CAS Key Deployment Project of Center for Ocean Mega-Research of Science[COMS2020Q07] ; CAS-CSIRO Jointly Project[133244KYSB20190031] ; High Performance Computing Center at the IOCAS
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000654462400035
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176912]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Xu, Zhenhua
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Polar Res Inst China, Shanghai, Peoples R China 3.Xiamen Univ Malaysia, China Asean Coll Marine Sci, Sepang, Malaysia 4.Chinese Acad Sci, Inst Oceanol, CAS Engn Lab Marine Ranching, Qingdao, Peoples R China 5.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 6.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 7.Pilot Natl Lab Marine Sci & Technol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Chen,Xu, Zhenhua,Robertson, Robin,et al. The Three-Dimensional Internal Tide Radiation and Dissipation in the Mariana Arc-Trench System[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2021,126(5):23.
APA	Zhao, Chen,Xu, Zhenhua,Robertson, Robin,Li, Qun,Wang, Yang,&Yin, Baoshu.(2021).The Three-Dimensional Internal Tide Radiation and Dissipation in the Mariana Arc-Trench System.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,126(5),23.
MLA	Zhao, Chen,et al."The Three-Dimensional Internal Tide Radiation and Dissipation in the Mariana Arc-Trench System".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 126.5(2021):23.