Institutional Repository of Key Laboratory of Ocean Circulation and Wave Studies, Institute of Oceanology, Chinese Academy of Sciences
| Generation and Propagation of M-2 Internal Tides Modulated by the Kuroshio Northeast of Taiwan | |
Chang, Hang1,2,3; Xu, Zhenhua1,2,3,4; Yin, Baoshu1,2,3,4; Houl, Yijun1,2,3,4; Liu, Yahao1,2,3,4; Li, Delei1,2,3,4; Wang, Yang1,2,3 ; Cao, Shengshan5; Liu, Antony K.5,6
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| 2019-04-01 | |
| Source Publication | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
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| ISSN | 2169-9275 |
| Volume | 124Issue:4Pages:2728-2749 |
| Corresponding Author | Xu, Zhenhua(xuzhenhua@qdio.ac.cn) |
| Abstract | The variability and energetics of M-2 internal tides during their generation and propagation through the Kuroshio flows northeast of Taiwan are investigated using a high-resolution numerical model. The corrugated continental slopes, particularly the I-Lan Ridge and Mien-Hua Canyon, are first identified as the energetic sources of M-2 internal tides. The domain-integrated M-2 barotropic-to-baroclinic conversion rate under the Kuroshio influence is similar to 2.35GW, similar to 0.9GW of which is generated at the I-Lan Ridge, similar to 0.93GW at the Mien-Hua Canyon, and similar to 0.52GW at the north shelf. The M-2 internal tide generation is influenced by the horizontally varying, zonally tilting stratification associated with the Kuroshio. In this situation, the conversion rate decreases by similar to 30% at the I-Lan Ridge but increases to within similar to 10% at the Mien-Hua Canyon and north shelf, in comparison to the simulation initiated with horizontal homogeneous stratification. Internal tides from multiple sources interfere to form a three-dimensional baroclinic field. The interference by the internal tides from the Mien-Hua Canyon and north shelf is refracted by the Kuroshio and exhibits a mesoscale gyre pattern, which can explain the frequent occurrence of internal solitary waves. An energetic along-slope tidal beam (TBKC) from the I-Lan Ridge radiates southward against the northward Kuroshio flows, causing strong vertical displacement, which favorably compares with recently reported field measurements. The M-2 internal tide energy dissipates primarily near the source sites, and the remaining energy radiates outward over limited distances. Complex topographic features and background currents enhance the internal tide dissipation, which induces strong, inhomogeneous diapycnal mixing. |
| Keyword | internal tides Kuroshio western Pacific numerical simulaton mixing |
| DOI | 10.1029/2018JC014228 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFA0604102] ; National Key Research and Development Program of China[2016YFC1401404] ; Strategic Pioneering Research Program of CAS[XDA22050202] ; National Natural Science Foundation of China[91858103] ; National Natural Science Foundation of China[41528601] ; National Natural Science Foundation of China[41676006] ; Scientific and Technological Innovation Project - QNLM[2016ASKJ12] ; Youth Innovation Promotion Association CAS ; CAS Interdisciplinary Innovation Team ; Key Research Program of Frontier Sciences, CAS[QYZDB-SSW-DQC024] ; High Performance Computing Center at the IOCAS |
| WOS Research Area | Oceanography |
| WOS Subject | Oceanography |
| WOS ID | WOS:000467950800026 |
| Publisher | AMER GEOPHYSICAL UNION |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/156972 |
| Collection | 海洋环流与波动重点实验室 |
| Corresponding Author | Xu, Zhenhua |
| Affiliation | 1.Chinese Acad Sci, CAS Key Lab Ocean Circulat & Waves, Inst Oceanol, Qingdao, Shandong, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Shandong, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol, Qingdao, Shandong, Peoples R China 5.Ocean Univ China, Sch Math Sci, Qingdao, Shandong, Peoples R China 6.Ocean Univ China, Ocean Remote Sensing Inst, Qingdao, Shandong, Peoples R China |
| First Author Affilication | Institute of Oceanology, Chinese Academy of Sciences; Center for Ocean Mega-Science, Chinese Academy of Sciences |
| Corresponding Author Affilication | Institute of Oceanology, Chinese Academy of Sciences; Center for Ocean Mega-Science, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Chang, Hang,Xu, Zhenhua,Yin, Baoshu,et al. Generation and Propagation of M-2 Internal Tides Modulated by the Kuroshio Northeast of Taiwan[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2019,124(4):2728-2749. |
| APA | Chang, Hang.,Xu, Zhenhua.,Yin, Baoshu.,Houl, Yijun.,Liu, Yahao.,...&Liu, Antony K..(2019).Generation and Propagation of M-2 Internal Tides Modulated by the Kuroshio Northeast of Taiwan.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,124(4),2728-2749. |
| MLA | Chang, Hang,et al."Generation and Propagation of M-2 Internal Tides Modulated by the Kuroshio Northeast of Taiwan".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 124.4(2019):2728-2749. |
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