Meanwhile, by an analysis of the factors giving rise to the fluctuation of sea level the main cause of the larger amplitude fluctuations of sea level is identified.

同时，通过对相关场资料的分析，揭示了引起这种较大振幅水位波动的主要原因。

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Sea-level fluctuations are monitored, severe weather warnings are issued and long-term weather forecasts are prepared with the help of satellites.

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