Observation of Enhanced Nonlinear Interactions After Severe Tropical Storm Chanchu (2004) in the Western South China Sea
文献类型：期刊论文
| 作者 | Wang, Dong-Xiao; Chen, Gui-Ying; Shang, Xiao-Dong; Xie, Xiao-Hui; Liang, Chang-Rong |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
 |
| 出版日期 | 2019 |
| 卷号 | 124期号:6页码:3837 |
| 关键词 | tropical cyclone nonlinear interaction internal wave spectrum |
| ISSN号 | 2169-9275 |
| DOI | 10.1029/2018JC014839 |
| 英文摘要 | Severe tropical storm Chanchu passed the subsurface mooring in the western South China Sea in June 2004, and its effects on the internal wavefield and nonlinear interactions were examined. The internal wavefield was characterized by diurnal (D-1) and semidiurnal (D-2) tides before Chanchu. However, after the passage of Chanchu, the internal wavefield was not only characterized by diurnal and semidiurnal tides but also by near-inertial (f) waves, internal waves with higher harmonic frequency (fD(2)=f+D-2 and D-3=D-1+D-2), and enhanced diurnal currents. Analysis of the rotary coefficient and bicoherence suggested that the observed fD(2) waves, D-3 waves, and enhanced diurnal currents originated from the nonlinear interactions of f+D-2=fD(2), D-1+D-2=D-3, and f+f=2f, respectively. Previous studies indicated that the nonlinear interactions induced by tropical cyclones mainly occur between the near-inertial waves and internal tides (f+D-1=fD(1) or f+D-2=fD(2)). Our observations indicate that tropical cyclones can also induce the self-interaction of near-inertial waves (f+f=2f) and enhance nonlinear interactions between diurnal and semidiurnal tides (D-1+D-2=D-3). Critical diurnal latitudes (where 2f approximate to D-1) play an important role in the occurrence of these nonlinear interactions. Near-inertial waves undergo self-interactions (f+f=2f) near the critical diurnal latitudes, and near-inertial energy is transferred to diurnal waves. Enhanced diurnal waves further contribute to the nonlinear interactions of D-1+D-2=D-3. These nonlinear processes might promote the energy cascade of the near-inertial waves induced by tropical cyclones near the critical diurnal latitudes and play an important role in ocean mixing. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/17711]  |
| 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.State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou, Zhejiang, Peoples R China 2.[Liang, Chang-Rong 3.Chen, Gui-Ying 4.Shang, Xiao-Dong 5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Dong-Xiao,Chen, Gui-Ying,Shang, Xiao-Dong,et al. Observation of Enhanced Nonlinear Interactions After Severe Tropical Storm Chanchu (2004) in the Western South China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2019,124(6):3837, 3848. |
| APA | Wang, Dong-Xiao,Chen, Gui-Ying,Shang, Xiao-Dong,Xie, Xiao-Hui,&Liang, Chang-Rong.(2019).Observation of Enhanced Nonlinear Interactions After Severe Tropical Storm Chanchu (2004) in the Western South China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,124(6),3837. |
| MLA | Wang, Dong-Xiao,et al."Observation of Enhanced Nonlinear Interactions After Severe Tropical Storm Chanchu (2004) in the Western South China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 124.6(2019):3837. |
入库方式： OAI收割
来源：南海海洋研究所
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