Near-inertial waves in the wake of 2011 Typhoon Nesat in the northern South China Sea
文献类型：期刊论文
| 作者 | Yang Bing1,2,3 ; Hou Yijun1,2
|
| 刊名 | ACTA OCEANOLOGICA SINICA
 |
| 出版日期 | 2014-11-01 |
| 卷号 | 33期号:11页码:102-111 |
| 关键词 | near-inertial waves South China Sea Typhoon Nesat |
| 通讯作者 | Hou, YJ (reprint author), Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China. |
| 英文摘要 | In September 2011, Typhoon Nesat passed over a moored array of instruments recording current and temperature in the northern South China Sea (SCS). Awake of baroclinic near-inertial waves (NIWs) commenced after Nesat passed the array. The associated near-inertial currents are surface-intensified and clockwise-polarized. The vertical range of NIWs reached 300 m, where the vertical range is defined as the maximum depth of the horizontal near-inertial velocity 5 cm/s. The current oscillations have a frequency of 0.7099 cycles per day (cpd), which is 0.025f higher than the local inertial frequency. The NIWs have an e-folding time-scale of 10 d based on the evolution of the near-inertial kinetic energy. The depth-leading phase of near-inertial currents indicates downward group velocity and energy flux. The estimated vertical phase velocity and group velocity are 0.27 and 0.08 cm/s respectively, corresponding to a vertical wavelength of 329 m. A spectral analysis reveals that NIWs act as a crucial process to redistribute the energy injected by Typhoon Nesat. A normal mode and an empirical orthogonal function analysis indicate that the second mode has a dominant variance contribution of 81%, and the corresponding horizontal phase velocity and wavelength are 3.50 m/s and 420 km respectively. The remarkable large horizontal phase velocity is relevant to the rotation of the earth, and a quantitative analysis suggests that the phase velocity of the NIWs with a blue-shift of 0.025f overwhelms that of internal gravity waves by a factor of 4.6. |
| 学科主题 | Oceanography |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000344583400010 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/23947]  |
| 专题 | 海洋研究所_海洋环流与波动重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci Ocean Circulat & Waves, Inst Oceanol, Key Lab, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang Bing,Hou Yijun. Near-inertial waves in the wake of 2011 Typhoon Nesat in the northern South China Sea[J]. ACTA OCEANOLOGICA SINICA,2014,33(11):102-111. |
| APA | Yang Bing,&Hou Yijun.(2014).Near-inertial waves in the wake of 2011 Typhoon Nesat in the northern South China Sea.ACTA OCEANOLOGICA SINICA,33(11),102-111. |
| MLA | Yang Bing,et al."Near-inertial waves in the wake of 2011 Typhoon Nesat in the northern South China Sea".ACTA OCEANOLOGICA SINICA 33.11(2014):102-111. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。