Can Tidal Forcing Alone Generate a GM-Like Internal Wave Spectrum?
文献类型：期刊论文
| 作者 | Chen, Zhiwu1; Chen, Shaomin2; Liu, Zhiyu3,4; Xu, Jiexin1; Xie, Jieshuo1; He, Yinghui1; Cai, Shuqun1,5; caisq@scsio.ac.cn |
| 刊名 | GEOPHYSICAL RESEARCH LETTERS
 |
| 出版日期 | 2019 |
| 卷号 | 46期号:24页码:14644 |
| 关键词 | internal waves near-inertial waves GM spectrum parametric subharmonic instability internal wave breaking northern South China Sea |
| DOI | 10.1029/2019GL086338 |
| 英文摘要 | An idealized two-dimensional numerical model is utilized to study internal wave generation by tide-topography interaction and wind forcing. Previous studies suggest that the quasi-universal Garrett-Munk (GM) internal wave spectrum can be generated and maintained only when energy is supplied from both the wind and the tides, while the present study shows that M-2 tidal forcing alone is sufficient to generate a GM-like spectrum in a latitude band roughly between 17 degrees and 29 degrees, with the steepness parameter epsilon > 1, N(0)h(0)/u(0) > 1 (N-0 is buoyancy frequency, h(0) topographic height, and u(0) tidal amplitude), and a finite excursion parameter. The key lies in the generation of near-inertial waves (NIWs) by breaking internal tides and triadic resonant interactions around supercritical topography. Remarkably, in the northern South China Sea, tidal forcing can contribute a comparable amount of near-inertial energy as that contributed by the summer wind and thus is an important NIW generation mechanism. |
| 资助机构 | Frontier Science Key Research Program of CAS [QYZDJ-SSW-DQC034]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [91858201, 41430964, 41890851, 41521005, 41622601, 41776007]; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0304]; Youth Innovation Promotion Association of CAS [2018378]; CASChinese Academy of Sciences [ISEE2018PY05] ; Frontier Science Key Research Program of CAS [QYZDJ-SSW-DQC034]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [91858201, 41430964, 41890851, 41521005, 41622601, 41776007]; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0304]; Youth Innovation Promotion Association of CAS [2018378]; CASChinese Academy of Sciences [ISEE2018PY05] |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18178]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou, Guangdong, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 4.Xiamen Univ, Coll Ocean & Earth Sci, State Key Lab Marine Environm Sci, Xiamen, Fujian, Peoples R China 5.Xiamen Univ, Coll Ocean & Earth Sci, Dept Phys Oceanog, Xiamen, Fujian, Peoples R China 6.Chinese Acad Sci, Inst South China Sea Ecol & Environm Engn, Guangzhou, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Zhiwu,Chen, Shaomin,Liu, Zhiyu,et al. Can Tidal Forcing Alone Generate a GM-Like Internal Wave Spectrum?[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(24):14644, 14652. |
| APA | Chen, Zhiwu.,Chen, Shaomin.,Liu, Zhiyu.,Xu, Jiexin.,Xie, Jieshuo.,...&caisq@scsio.ac.cn.(2019).Can Tidal Forcing Alone Generate a GM-Like Internal Wave Spectrum?.GEOPHYSICAL RESEARCH LETTERS,46(24),14644. |
| MLA | Chen, Zhiwu,et al."Can Tidal Forcing Alone Generate a GM-Like Internal Wave Spectrum?".GEOPHYSICAL RESEARCH LETTERS 46.24(2019):14644. |
入库方式： OAI收割
来源：南海海洋研究所
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