IOCAS-IR  > 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, Yang1,3,4; Xu, Zhenhua1,2,3,4; Yin, Baoshu1,2,3,4; Hou, Yijun1,2,3,4; Chang, Hang1,3,4
2018-08-01
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
ISSN2169-9275
Volume123Issue:8Pages:5091-5112
Corresponding AuthorXu, Zhenhua(xuzhenhua@qdio.ac.cn)
AbstractLong-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.
Keywordinternal tides numerical modeling western Pacific interference dissipation
DOI10.1029/2018JC013910
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaOceanography
WOS SubjectOceanography
WOS IDWOS:000445188900003
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/160353
Collection海洋环流与波动重点实验室
Corresponding AuthorXu, Zhenhua
Affiliation1.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
First Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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.
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