Nonlinear interactions among internal tidal waves in the northeastern South China Sea
文献类型：期刊论文
| 作者 | Xie, XH ; Shang, XD ; Chen, GY |
| 刊名 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
 |
| 出版日期 | 2010 |
| 卷号 | 28期号:5页码:996-1001 |
| 关键词 | South China Sea (SCS) internal waves nonlinearity rotary spectra bicoherence |
| ISSN号 | 0254-4059 |
| 通讯作者 | xdshang@scsio.ac.cn |
| 中文摘要 | We used a set of 75-day long ADCP data from the northeastern South China Sea (SCS) to investigate nonlinear interactions among freely propagating internal tidal waves. The kinetic energy spectra displayed significant peaks at some higher tidal frequencies, such as O1M2 (O-1+M-2), and M-4 (M-2+M-2), where O-1 is the lunar diurnal internal tide, M-2 is the lunar semidiurnal internal tide, and M-4 is the first higher harmonic frequency of M-2. These higher tidal harmonic frequency peaks, as well as the fundamental tidal harmonic peaks, show a sigma (-2.3) spectral falloff rate with frequency. In addition, we explored the possible generation mechanism of higher tidal harmonics. Analysis on the rotary and bicoherence spectra suggests that strong forced non-resonant interaction induced by nonlinear advections was the dominant physical mechanism that induced these higher tidal harmonics. Moreover, the energetic, freely propagating semidiurnal (M-2) internal tidal wave played the most crucial role in these interactions. These results indicate that strong nonlinear forced non-resonant interactions among internal tides can be one of the processes responsible for the redistribution of energy in the internal wave spectrum. |
| 学科主题 | Limnology; Oceanography |
| 收录类别 | SCI |
| 原文出处 | SCIENCE PRESS |
| WOS记录号 | WOS:000281711600007 |
| 公开日期 | 2011-07-03 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/6235]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 推荐引用方式 GB/T 7714 | Xie, XH,Shang, XD,Chen, GY. Nonlinear interactions among internal tidal waves in the northeastern South China Sea[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(5):996-1001. |
| APA | Xie, XH,Shang, XD,&Chen, GY.(2010).Nonlinear interactions among internal tidal waves in the northeastern South China Sea.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(5),996-1001. |
| MLA | Xie, XH,et al."Nonlinear interactions among internal tidal waves in the northeastern South China Sea".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.5(2010):996-1001. |
入库方式： OAI收割
来源：南海海洋研究所
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