| XU Jianping,SHI Maochong,ZHU Bokang,LIU Zenghong. 2004. Several characteristics of water exchange in the Luzon Strait. Acta Oceanologica Sinica, (1):11－22 |
| Several characteristics of water exchange in the Luzon Strait |
| Several characteristics of water exchange in the Luzon Strait |
| Received:September 22, 2003 Revised:February 08, 2004 |
| DOI： |
| Key words:water exchange Kuroshio volume transport Luzon Strait |
| 中文关键词: water exchange Kuroshio volume transport Luzon Strait |
| 基金项目: |
| Author Name | Affiliation | E-mail | | XU Jianping | Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China | sioxu@zgb.com.cn | | SHI Maochong | Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China
China Ocean University, Qingdao 266003, China | | | ZHU Bokang | Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China | | | LIU Zenghong | Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
Key Laboratory of Ocean Dynamic Processes and Satellite Oceanography of State Oceanic Administration, Hangzhou 310012, China | |
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| Abstract: |
| Using the hydrographic data obtained from two sectional observations crossing the Luzon strait in the summer of 1994 and in the winter of 1998, the volume transport through this strait is calculated. It is found that in winter the volume transport (4.45×106 m3/s) is far larger than that in the summer (2.0×106 m3/s), respectively being about equal to 15.0% and 6.9% of the Kuroshio.And the paths of water in and out of the section of the strait vary distinctly with the season. In summer, the water flows in and out of the South China Sea (SCS) three times:that is, the inlet passages almost appear on the southern sides of the three deep troughs,the outlet passages are all located on the northern sides of the troughs,and the in-out volume transports through the channel are not lower than 4.0×106 m3/s. The highest velocity (>80 cm/s) and the largest entering water capacity (6.6×106 m3/s) all occur in the Balintang Channel. Except for the north outlet passage in the section, all the higher velocities over 10 cm/s are mainly distributed on the layer above 500 m. In winter,the water flows in and out of the strait two times:the southern sides of the second and third deep troughs are the main passages of the Kuroshio water running into the SCS,while the whole section of the first deep trough and the bottom section of thesecond deep trough are the outlet passages. The higher velocities over 10 cm/s are almost distributed on the layer above 300m. Numerical calculation shows that the northern side of the third trough may be the outlet passage. |
| 中文摘要: |
| Using the hydrographic data obtained from two sectional observations crossing the Luzon strait in the summer of 1994 and in the winter of 1998, the volume transport through this strait is calculated. It is found that in winter the volume transport (4.45×106 m3/s) is far larger than that in the summer (2.0×106 m3/s), respectively being about equal to 15.0% and 6.9% of the Kuroshio.And the paths of water in and out of the section of the strait vary distinctly with the season. In summer, the water flows in and out of the South China Sea (SCS) three times:that is, the inlet passages almost appear on the southern sides of the three deep troughs,the outlet passages are all located on the northern sides of the troughs,and the in-out volume transports through the channel are not lower than 4.0×106 m3/s. The highest velocity (>80 cm/s) and the largest entering water capacity (6.6×106 m3/s) all occur in the Balintang Channel. Except for the north outlet passage in the section, all the higher velocities over 10 cm/s are mainly distributed on the layer above 500 m. In winter,the water flows in and out of the strait two times:the southern sides of the second and third deep troughs are the main passages of the Kuroshio water running into the SCS,while the whole section of the first deep trough and the bottom section of thesecond deep trough are the outlet passages. The higher velocities over 10 cm/s are almost distributed on the layer above 300m. Numerical calculation shows that the northern side of the third trough may be the outlet passage. |
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