| 棉兰老流和棉兰老潜流在季节尺度上的关系研究 |
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| 引用本文： | 王琰,兰健,李理.棉兰老流和棉兰老潜流在季节尺度上的关系研究[J].海洋学报(英文版),2016,35(5):1-8. |
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| 作者姓名： | 王琰 兰健 李理 |
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| 作者单位： | 海洋与大气学院, 中国海洋大学, 青岛, 266100,海洋与大气学院, 中国海洋大学, 青岛, 266100;物理海洋教育部重点实验室, 中国海洋大学, 青岛, 266100,海洋与大气学院, 中国海洋大学, 青岛, 266100 |
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| 基金项目： | The program of Global Change and Air-Sea Interaction under contract No. GASI-03-01-01-05; the National Basic Research Program of China under contract No. 2012CB417404; the Research Project of Chinese Ministry of Education under contract No. 113041A; the National Natural Science Foundation of China under contract Nos 41276011, 41521091 and U1406401. |
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| 摘 要： | The ocean general circulation model for the earth simulator(OFES) products is applied to estimate the transports of the Mindanao Current(MC) and the Mindanao undercurrent(MUC) and explore the relation between them on seasonal scale. In general, the MUC is composed of the lower part of the Southern Pacific Tropical Water(SPTW)and Antarctic Intermediate Water(AAIW). While the deep northward core below 1 500 m is regarded as a portion of MUC. Both salinity and potential density restrictions become more reasonable to estimate the transports of MC/MUC as the properties of water mass having been taken into consideration. The climatological annual mean transport of MC is(37.4±5.81)×10~6 m~3/s while that of MUC is(23.92±6.47)×10~6 m~3/s integrated between 26.5 σ_θ and 27.7 σ_θ, and(17.53±5.45)×10~6 m~3/s integrated between 26.5 σ_θ and 27.5 σ_θ in the OFES. The variations of MC and MUC have good positive correlation with each other on the seasonal scale: The MC is stronger in spring and weaker in fall, which corresponds well with the MUC, and the correlation coefficient of them is 0.67 in the OFES.The same variations are also appeared in hybrid coordinate ocean model(HYCOM) results. Two sensitive experiments based on HYCOM are conducted to explore the relation between MC and MUC. The MUC(26.5σ_θ27.7) is strengthening as the MC increases with the enhancement of zonal wind field. It is shown,however, that the main part of the increasement is the deeper northward high potential density water(HPDW),while the AAIW almost remains stable, SPTW decreases, and vice versa.
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| 关 键 词： | 棉兰老流 棉兰老潜流 位势密度 流量 季节变化 |
| 收稿时间： | 2015/4/28 0:00:00 |
| 修稿时间： | 2015/9/28 0:00:00 |
The relation between the Mindanao Current and Mindanao Undercurrent on seasonal scale |
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| WANG Yan,LAN Jian and LI Li.The relation between the Mindanao Current and Mindanao Undercurrent on seasonal scale[J].Acta Oceanologica Sinica,2016,35(5):1-8. |
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| Authors: | WANG Yan LAN Jian and LI Li |
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| Institution: | 1.College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China2.College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao 266100, China;Physical Oceanography Laboratory, Ocean University of China, Qingdao 266100, China |
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| Abstract: | The ocean general circulation model for the earth simulator (OFES) products is applied to estimate the transports of the Mindanao Current (MC) and the Mindanao undercurrent (MUC) and explore the relation between them on seasonal scale. In general, the MUC is composed of the lower part of the Southern Pacific Tropical Water (SPTW) and Antarctic Intermediate Water (AAIW). While the deep northward core below 1 500 m is regarded as a portion of MUC. Both salinity and potential density restrictions become more reasonable to estimate the transports of MC/MUC as the properties of water mass having been taken into consideration. The climatological annual mean transport of MC is (37.4±5.81)×106 m3/s while that of MUC is (23.92±6.47)×106 m3/s integrated between 26.5σ θ and 27.7 σ θ , and (17.53±5.45)×106 m3/s integrated between 26.5 σ θ and 27.5 σ θ in the OFES. The variations of MC and MUC have good positive correlation with each other on the seasonal scale: The MC is stronger in spring and weaker in fall, which corresponds well with the MUC, and the correlation coefficient of them is 0.67 in the OFES. The same variations are also appeared in hybrid coordinate ocean model (HYCOM) results. Two sensitive experiments based on HYCOM are conducted to explore the relation between MC and MUC. The MUC (26.5<σ θ <27.7) is strengthening as the MC increases with the enhancement of zonal wind field. It is shown, however, that the main part of the increasement is the deeper northward high potential density water (HPDW), while the AAIW almost remains stable, SPTW decreases, and vice versa. |
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| Keywords: | Mindanao Current Mindanao Undercurrent potential density transport seasonal variability |
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