Long-Range Radiation and Interference Pattern of Multisource M-2 Internal Tides in the Philippine Sea

doi:10.1029/2018JC013910

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

	Long-Range Radiation and Interference Pattern of Multisource M-2 Internal Tides in the Philippine Sea
	Wang, Yang 1,3,4; Xu, Zhenhua 1,2,3,4; Yin, Baoshu 1,2,3,4; Hou, Yijun 1,2,3,4; Chang, Hang 1,3,4
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
	2018-08-01
卷号	123 期号:8 页码:5091-5112
关键词	internal tides numerical modeling western Pacific interference dissipation
ISSN号	2169-9275
DOI	10.1029/2018JC013910
通讯作者	Xu, Zhenhua(xuzhenhua@qdio.ac.cn)
英文摘要	Long-range radiation and interference of M-2 internal tides from multiple sources in the Philippine Sea are examined by driving a high-resolution numerical model. The M-2 internal tides are effectively generated around the boundary area, which includes the Luzon Strait, Ryukyu Island chain, Bonin Ridge, Mariana Arc, and Izu Ridge, favoring the occurrence of complex interference patterns. The local sources (mainly Daito Islands and Palau Ridge) inside the basin contribute to a small portion (5%) of total energy but enhance the geographical inhomogeneity of the baroclinic field. The mode-1 and mode-2 M-2 tidal beams from boundary sources radiate a long distance into the basin but exhibit different interference-modulated geography variations. A 2-D line source model characterizing interference can reproduce the general baroclinic field. Two notable interference cases are investigated: (1) the superposition of internal tides from Luzon Strait and Miyako Strait bifurcates into several southeastward beams, consistent with previous numerical simulations and altimeter measurements, and (2) the interference between Tokara Strait and Bonin Ridge exhibits a multiscale spatial pattern, which is modulated by the local generated energy and bathymetry features. Energetic dissipation occurs both near the boundary sources and in the basin. A locally dissipated fraction q of 0.4 is estimated at the Luzon Strait and Bonin Ridge with continuous bathymetry features, while q of 0.6 is estimated at the Ryukyu Island chain and Mariana Arc with discrete topographic variability. A lower locally dissipated fraction indicates a stronger energy flux radiating into the basin, where enhanced dissipation coincides closely with the interference-modulated flux field.
资助项目	National Key Research and Development Program of China[2017YFA0604102] ; Strategic Pioneering Research Program of CAS[XDA11010204] ; QNLM[2016ASKJ12] ; National Natural Science Foundation of China[41528601] ; National Natural Science Foundation of China[41676006] ; National Natural Science Foundation of China[U1406401] ; National Natural Science Foundation of China[41421005] ; Youth Innovation Promotion Association CAS, CAS Interdisciplinary Innovation Team ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC024]
WOS研究方向	Oceanography
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000445188900003
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/160352]
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, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yang,Xu, Zhenhua,Yin, Baoshu,et al. Long-Range Radiation and Interference Pattern of Multisource M-2 Internal Tides in the Philippine Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2018,123(8):5091-5112.
APA	Wang, Yang,Xu, Zhenhua,Yin, Baoshu,Hou, Yijun,&Chang, Hang.(2018).Long-Range Radiation and Interference Pattern of Multisource M-2 Internal Tides in the Philippine Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,123(8),5091-5112.
MLA	Wang, Yang,et al."Long-Range Radiation and Interference Pattern of Multisource M-2 Internal Tides in the Philippine Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 123.8(2018):5091-5112.