Observation and computation of surface seiche in Lake Biwa, Japan

利用水动力学方程对日本琵琶湖表面定振波进行了计算和分析,结果表明其主要周期约为69.5min。另外,利用实测水位资料,采用最大熵谱法进行分析,得到的主要周期约为68min,两者吻合很好。;The periods of seiche oscillation in Lake Biwa, Japan were computed according to the hydrodynamics equations with the main period being about 69.5 minutes. In addition, the real water level data at the Great Bridge Station were analysed by using the maximum entropy method. The periods acquired was about 68 minute. These results coincided with each other.