Seasonal characteristics of internal tides and their responses to background currents in the Luzon Strait
文献类型：CNKI期刊论文
| 作者 | FANG Yong; HOU Yijun; JING Zhiyou |
| 发表日期 | 2015-11-15 |
| 出处 | Acta Oceanologica Sinica
 |
| 关键词 | internal tide,seasonal variation,background current,Luzon Strait |
| 英文摘要 | The spatial-temporal characteristics of internal tides(ITs) in the southwest Luzon Strait are examined, based on9-month mooring current records from autumn 2008 to summer 2009. The results of spectral analysis show that the ITs in diurnal and semidiurnal frequencies are prominent at the mooring site, especially for the clockwise rotary component. The diurnal ITs are mostly dominated by the first mode except for that in spring when the second mode is relatively predominant. The semidiurnal ITs display a variable multimodal structure. Moreover,an apparent difference is detected in the kinetic energy of diurnal ITs. The energy is strongest in winter, and followed by that in summer, whereas the value is smallest in spring and autumn. It is suggested that the incoherent motions are responsible for the significant seasonal variations of diurnal ITs, reflecting interaction between diurnal ITs and the varying background conditions. However, the semidiurnal ITs are independent of seasonal change, whose energy is smaller and only one-third of the diurnal energy in winter. Nevertheless, the abnormal variations of semidiurnal ITs are also related to the variable background conditions. The incoherent semidiurnal constituent accounts for about 37% of the total semidiurnal tidal kinetic energy, but the diurnal tidal motions contain fewer incoherent component(22.2%). |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | The National Natural Science Foundation of China under contract Nos 41276022,U1133001,41230962,41206010 and 41206008 ; the Open Fund of the Key Laboratory of Ocean Circulation and Waves,Chinese Academy of Sciences under contract No.KLOCW1506 ; Guangdong Province Key Laboratory for Coastal Ocean Variation and Disaster Prediction Technologies,Guangdong Ocean University under contract No.GLOD1401 |
| 卷 | v.34期:11页:50-58 |
| 语种 | 英文; |
| 分类号 | P731.23 |
| ISSN号 | 0253-505X |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189860]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.StateKeyLaboratoryofTropicalOceanography(LTO),SouthChinaSeaInstituteofOceanology,ChineseAcademyofSciences 2.KeyLaboratoryofOceanCirculationandWaves(KLOCAW),InstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | FANG Yong,HOU Yijun,JING Zhiyou. Seasonal characteristics of internal tides and their responses to background currents in the Luzon Strait. 2015. |
入库方式： OAI收割
来源：海洋研究所
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