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本文通过对黄、东海沿岸7个站1975年10月—1976年9月的日平均潮位、气压和风的资料进行谱分析,发现在2—60天周期范围内,海面低频振动的能量主要集中在大于12天周期范围内;3天周期也有明显的峰值;黄海各站冬季的海面变化大于夏季;黄、东海沿岸在冬季有一低频振动由北向南传播,在我们研究的海区,气压是引起海面变化的主要因素,其次是沿岸风应力。本文还对大气强迫力产生海面变化的动力学机制进行了初步探讨。
Based on the spectral analysis of daily average tide gauge, barometric pressure and wind from July 1975 to September 1976 in seven stations along the Yellow Sea and East China Sea coast, this study found that the energy of low frequency vibration of the sea surface concentrated in the range of 2-60 days Over the 12-day period; 3-day periods also have significant peaks; sea level over the Yellow Sea in winter is greater than that over the summer; and there is a low-frequency vibration propagating from north to south during the winter in the Yellow Sea and East China Sea. In our study area, The main factor is followed by coastal wind stress. The paper also discussed the dynamic mechanism of the sea surface pressure caused by atmospheric forcing force.