| Liu Kexiu,Ma Jirui,Xu Jianping,Han Guijun,Fan Zhenhua. 2002. Sea surface height anomaly and geostrophic circulation variations in the South China Sea from TOPEX/POSEIDON altimetry. Acta Oceanologica Sinica, (3):345－354 |
| Sea surface height anomaly and geostrophic circulation variations in the South China Sea from TOPEX/POSEIDON altimetry |
| Sea surface height anomaly and geostrophic circulation variations in the South China Sea from TOPEX/POSEIDON altimetry |
| Received:March 01, 2002 Revised:March 28, 2002 |
| DOI： |
| Key words:The South China Sea sea surface height circulation TOPEX/POSEIDON |
| 中文关键词: The South China Sea sea surface height circulation TOPEX/POSEIDON |
| 基金项目:This study was supported by the National Natural Science Foundation of China under contract No.40006001; the Young Oceanologist Foundation of the State Oceanic Administration under contract No.99306. |
| Author Name | Affiliation | | Liu Kexiu | National Marine Data and Information Service, Tianjin 300171, China | | Ma Jirui | National Marine Data and Information Service, Tianjin 300171, China
Key Laboratory of Ocean Dynamic Proccsscs and Satellite Oceanography, Statc Oceanic Administration, Hangzhou 310012, China | | Xu Jianping | Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
Key Laboratory of Ocean Dynamic Proccsscs and Satellite Oceanography, Statc Oceanic Administration, Hangzhou 310012, China | | Han Guijun | National Marine Data and Information Service, Tianjin 300171, China | | Fan Zhenhua | National Marine Data and Information Service, Tianjin 300171, China |
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| Abstract: |
| The sea surface height anomaly (SSHA) and geostrophic circulation in the South ChinaSea (SCS) are studied using TOPEX/POSEIDON (T/P) altimetry data. The SSHA, which is obtained after tidal correction based on the tidal results from T/P data, is predominated by seasonal alternating monsoons. The results reveal that the SSHA in the central part of the SCS is positive in spring and summer, but negative in autumn and winter. It is also found that the SSHA in the SCS can be approached with the sum of tidal constituents SA and SSA. The geostrophic circulations in the SCS are calculated according to sea surface dynamic topography, which is the sum of SSHA and mean sea surface height. It is suggested that the circulation in the upper layer of the SCS is generally cyclonic and notably western intensified during autumn and winter, while the western intensification is weak during spring and summer. It is also indicated that the Kuroshio intrudes into the northeastern SCS throuth the Luzon Strait in winter. But there is no indication of Kuroshio intruding into the SCS in summer. |
| 中文摘要: |
| The sea surface height anomaly (SSHA) and geostrophic circulation in the South ChinaSea (SCS) are studied using TOPEX/POSEIDON (T/P) altimetry data. The SSHA, which is obtained after tidal correction based on the tidal results from T/P data, is predominated by seasonal alternating monsoons. The results reveal that the SSHA in the central part of the SCS is positive in spring and summer, but negative in autumn and winter. It is also found that the SSHA in the SCS can be approached with the sum of tidal constituents SA and SSA. The geostrophic circulations in the SCS are calculated according to sea surface dynamic topography, which is the sum of SSHA and mean sea surface height. It is suggested that the circulation in the upper layer of the SCS is generally cyclonic and notably western intensified during autumn and winter, while the western intensification is weak during spring and summer. It is also indicated that the Kuroshio intrudes into the northeastern SCS throuth the Luzon Strait in winter. But there is no indication of Kuroshio intruding into the SCS in summer. |
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