The Influence of ENSO on the Structure of Internal Tides in the Xisha Area
文献类型：期刊论文
| 作者 | Zhai, Rong-Wei; Chen, Gui-Ying; Liang, Chang-Rong; Shang, Xiao-Dong; Xie, Jie-Shuo |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
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| 出版日期 | 2020 |
| 卷号 | 125期号:3页码:e2019JC015405 |
| 关键词 | ENSO internal tides vertical structure stratification Xisha area |
| ISSN号 | 2169-9275 |
| 英文摘要 | Based on mooring data in the Xisha area of the South China Sea from August 2007 to December 2016, we found that the diurnal internal tides (ITs) had a tendency to weaken from 2008 to 2016, while the semidiurnal ITs were enhanced from 2011 to 2015. The diurnal and semidiurnal ITs in the Xisha area were negatively and positively correlated with the Nino 3.4 Index, respectively. It was also found that the large-scale El Nino-Southern Oscillation (ENSO) can influence ITs. The link between ENSO and ITs is stratification. The upper-ocean stratification of the Xisha area in El Nino years was stronger than that in La Nina years. Under the effects of stratification, the structures of diurnal and semidiurnal ITs showed different patterns during El Nino and La Nina years; both were dominated by low modes in La Nina years but displayed more signals of high modes in El Nino years. Plain Language Summary El Nino-Southern Oscillation (ENSO), originates in the tropical Pacific Ocean, is the strongest large-scale climate fluctuation with worldwide impacts. ENSO can influence the sea surface temperature of the South China Sea. In so doing, it changes the stratification of the South China Sea, which can affect the vertical structure of internal tides (ITs). High-mode ITs usually dissipate locally and thus generate local mixing, whereas low-mode ITs can propagate for a long distance before being dissipated. This paper studied the modulation of ITs by ENSO events basing on a total of 9 years of observation data. The results showed that, in La Nina years, the diurnal and semidiurnal ITs were dominated by low modes. However, in El Nino years, the diurnal and semidiurnal ITs displayed more signals of high modes. Key Points Diurnal internal tides in the Xisha area of the South China Sea showed a weakening trend over the 2008-2016 period, while semidiurnal internal tides had opposite trend Upper-ocean stratification of the Xisha area in the South China Sea in El Nino years was stronger than in La Nina years Internal tides were dominated by high modes during El Nino years but displayed more signals of low modes in La Nina years |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18339]  |
| 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.Shang, Xiao-Dong 2.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.[Chen, Gui-Ying 5.Liang, Chang-Rong 6.Shang, Xiao-Dong 7.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou, Peoples R China 8.[Chen, Gui-Ying 9.Liang, Chang-Rong 10.Shang, Xiao-Dong |
| 推荐引用方式 GB/T 7714 | Zhai, Rong-Wei,Chen, Gui-Ying,Liang, Chang-Rong,et al. The Influence of ENSO on the Structure of Internal Tides in the Xisha Area[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2020,125(3):e2019JC015405. |
| APA | Zhai, Rong-Wei,Chen, Gui-Ying,Liang, Chang-Rong,Shang, Xiao-Dong,&Xie, Jie-Shuo.(2020).The Influence of ENSO on the Structure of Internal Tides in the Xisha Area.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,125(3),e2019JC015405. |
| MLA | Zhai, Rong-Wei,et al."The Influence of ENSO on the Structure of Internal Tides in the Xisha Area".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 125.3(2020):e2019JC015405. |
入库方式： OAI收割
来源：南海海洋研究所
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