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太湖表面定振波的数值计算和最大熵谱分析
逄勇, 濮培民
中国科学院南京地理与湖泊研究所 南京 210008
摘要:
利用水动力学方程对太湖表面的定振波进行计算，算得定振波周期约为452min。另外，利用1992年8月29－31日在太湖西山观测到的水位资料，采用最大滴谱法，分析太湖表面的定振波，得周期值约为450min，计算和分析的周期值基本吻合，取熵谱分析结果得太湖表面的单节点定振波周期值为450min。
关键词:  太湖  定振波  数值计算  最大熵谱分析
DOI：
分类号:
基金项目:
NUMERICAL COMPUTATION AND MAXIMUM ENTROPY ANALYSIS OF THE SURFACE SEICHE IN TAIHU LAKE
Pang Yong, Pu Peimin
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008
Abstract:
A seiche is a lake surface wave oscillation with stable period and important influence on the verticle and horizontal exchange of momentum heat and matter in the lake. The periods of the seiche oscillation in Taihu Lake were computed with the one dimensional hydrodynamic equations in this article. In the computation, Taihu Lake was divided into 62 sections from northwest to southeast and the length of the deep water line in the lake was 62km. The initial amplltude of the seiche in the northwest point was 5cm. The computed one-node oscillation period was about 452min. The observed water level data in the Taihu Lake from 29 August to 31 August 1992 were analyzed by using the maximum entropy method. The one-node oscillation period analyzed was about 450min. The one-node seiche periods calculated by both methods almost coincided each other and was about 7.5h.
Key words:  Taihu Lake, Seiche, Numerical computation, The maximum entropy analysis
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