Warm water wake off northeast Vietnam in the South China Sea

YAN Yunwei; CHEN Changlin; LING Zheng

doi:10.1007/s13131-014-0555-x

夏季越南东北外海暖水的时空变化特征及其机理研究

doi: 10.1007/s13131-014-0555-x

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, China
2.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

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出版历程
- 收稿日期: 2014-02-24
- 修回日期: 2014-06-13

Warm water wake off northeast Vietnam in the South China Sea

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, China
2.
State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China

摘要

摘要: 夏季南海盛行西南季风, 由于安南山脉的阻挡作用, 在越南东北外海形成一风速低值区。卫星数据和现场观测资料都表明在该风速低值区存在暖水。该暖水具有显著的季节变化：六月份形成, 七、八月份达到最强, 九月份开始衰弱, 十月份消失不见。除季节变化外, 暖水还有明显的日变化, 白天增强, 晚上减弱。我们进一步利用混合层模式对该暖水形成的动力过程和热力过程进行了研究。结果表明在季节尺度上热力过程对暖水形成的贡献比动力过程大而在日变化尺度上动力过程占主导作用。
- 越南东北外海暖水 /
- 动力过程 /
- 热力过程 /
- 混合层模式
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.
- warm water wake /
- wind-induced mixing processes /
- thermal processes /
- seasonal timescale

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参考文献(29)

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文章访问数: 1227
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PDF下载量: 1105
被引次数: 0

夏季越南东北外海暖水的时空变化特征及其机理研究

doi: 10.1007/s13131-014-0555-x

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出版历程

Warm water wake off northeast Vietnam in the South China Sea

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