| Wang Huizan,Liu Quanhong,Yan Hengqian,Song Bo,Zhang Weimin. 2019. The interactions between surface Kuroshio transport and the eddy field east of Taiwan using satellite altimeter data. Acta Oceanologica Sinica, 38(4):116－125 |
| The interactions between surface Kuroshio transport and the eddy field east of Taiwan using satellite altimeter data |
| 台湾以东表面黑潮流量与涡旋场相互作用研究 |
| Received:February 08, 2018 |
| DOI：10.1007/s13131-019-1417-3 |
| Key words:wavelet analysis causal analysis Kuroshio east of Taiwan correlation sea level anomaly |
| 中文关键词: 小波分析 因果分析 台湾以东黑潮 相关关系 海面高度异常 |
| 基金项目:The National Key R&D Program of China under contract No. 2018YFC1406202; the National Natural Science Foundation of China under contract Nos 41206002, 41706021, 41775053 and 91428206; the China Postdoctoral Science Foundation under contract No. 2014M551711. |
| Author Name | Affiliation | E-mail | | Wang Huizan | State Key Laboratory of Satellite Ocean Environment Dynamics (SOED), Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou 310012, China
College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, China | wanghuizan@126.com | | Liu Quanhong | College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, China | | | Yan Hengqian | College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, China | | | Song Bo | College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, China | | | Zhang Weimin | College of Meteorology and Oceanography, National University of Defense Technology, Changsha 410073, China | |
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| Abstract: |
| Based on the daily sea surface height and absolute geostrophic velocity data from 1993 to 2015 provided by the AVISO Center of French Space Agency, the surface Kuroshio transport east of Taiwan and its adjacent eddy field (sea surface height anomaly) were analyzed. Four main periods of the surface Kuroshio transport and eddy field east of Taiwan were obtained, which were used to reveal their interactions. The main conclusions are as follows:(1) Based on the wavelet analysis, the surface Kuroshio transport east of Taiwan and its nearby eddy field showed significant seasonal, annual and interannual periods. In addition to the obvious periods of 182 days (0.5 year) and 365 days (1 year), there were also more obvious periods of about 860 days (2.35 years) and 2 472 days (6.8 years) for the surface Kuroshio transport. There were also four more obvious periods corresponding to the eddy field of 200 days (0.55 year), 374 days (1 year), 889 days (2.43 years) and 2 374 days (6.5 years), although there were latitudinal variations. (2) Based on both the correlation and causal analysis, the correlation between the surface Kuroshio transport and the nearby eddy field over the above four periods was analyzed, and different Kuroshio-eddy interactions, with period and latitudinal variability, were revealed. |
| 中文摘要: |
| 本文基于法国空间局AVISO中心提供的1993年~2015年的卫星遥感海面高度和海表流场逐日资料，分析了台湾以东表面黑潮流量及其邻近海域的涡旋场（海面高度异常），得到了台湾以东表面黑潮流量和涡旋场的四个主要周期，并研究了不同对应周期的黑潮表面流量及其邻近涡旋场之间的相互作用关系。论文主要结论如下：（1）基于小波分析法，分析了台湾以东表面黑潮流量及其邻近的涡旋场，发现两者都具有明显的季节、年和年际变化周期。对于表面黑潮流量，除了具有182天（0.5年）和365天（1年）的显著周期外，还存在860天（2.35年）和2472天（6.8年）左右的较为明显的周期。涡旋场也相应地存在200天（0.55年）、374天（1年）、889天（2.43年）和2374天（6.5年）四个较明显的周期，但在不同的纬度存在一定差异；（2）基于相关分析和因果分析法，分析了以上四个周期内表面黑潮流量及其邻近涡旋场的相关性，揭示了黑潮与涡旋在不同周期区间、不同纬度相互影响关系的差异。 |
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