| 夏季越南东北外海暖水的时空变化特征及其机理研究 |
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| 作者姓名： | YAN Yunwei CHEN Changlin LING Zheng |
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| 作者单位： | College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China;State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China |
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| 基金项目： | The National Science Fund of China for Distinguished Young Scholars (NSFDYS) under contract No.41125019，the National Basic Research Program of China under contract Nos 2012CB955601 and 2013CB430301，the Basic Research Program of Second Institute of Oceanogra-phy |
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| 摘 要： | Due to orographic blockage, a weak wind wake occurs in summer off northeast Vietnam in the South China Sea. Under the wind wake, warm water is observed from both high-resolution satellite data and hydrographic observations. The wake of warm water forms in June, continues to mature in July and August, starts to decay in September, and disappears in October. The warm water wake also shows robust diurnal variation – it intensifies during the day and weakens in the night. Warm water wakes can be generated through wind-induced mixing and thermal(latent heat flux) processes. In this paper, a mixed layer model is used to evaluate the relative importance of the two processes on seasonal and diurnal timescales, respectively. The results demonstrate that thermal processes make a greater contribution to the wake than wind-induced mixing processes on a seasonal timescale, while the warm water wake is dominated by wind-induced mixing processes on a diurnal timescale.
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| 关 键 词： | 中国南海 东北部 温水 越南 混合方法 时间尺度 昼夜变化 水文观测 |
| 收稿时间： | 2014/2/24 0:00:00 |
| 修稿时间： | 2014/6/13 0:00:00 |
Warm water wake off northeast Vietnam in the South China Sea |
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| YAN Yunwei,CHEN Changlin,LING Zheng.Warm water wake off northeast Vietnam in the South China Sea[J].Acta Oceanologica Sinica,2014,33(11):55-63. |
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| Authors: | YAN Yunwei CHEN Changlin and LING Zheng |
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| Institution: | 1.College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China;State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China2.State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China |
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| Abstract: | Due to orographic blockage, a weak wind wake occurs in summer off northeast Vietnam in the South China Sea. Under the wind wake, warm water is observed from both high-resolution satellite data and hydrographic observations. The wake of warm water forms in June, continues to mature in July and August, starts to decay in September, and disappears in October. The warm water wake also shows robust diurnal variation-it intensifies during the day and weakens in the night. Warm water wakes can be generated through wind-induced mixing and thermal (latent heat flux) processes. In this paper, a mixed layer model is used to evaluate the relative importance of the two processes on seasonal and diurnal timescales, respectively. The results demonstrate that thermal processes make a greater contribution to the wake than wind-induced mixing processes on a seasonal timescale, while the warm water wake is dominated by wind-induced mixing processes on a diurnal timescale. |
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| Keywords: | warm water wake wind-induced mixing processes thermal processes seasonal timescale diurnal timescale northeast Vietnam South China Sea |
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