中文摘要：

为深入分析岩溶含水系统水动力特征，将时间序列分析中的相干谱分析和交叉振幅分析应用于后寨岩溶含水系统水动力特征研究。相干谱分析揭示岩溶含水系统中存在对降雨信号线性化程度高的快速流和对降雨信号线性化程度低的慢速流；通过交叉振幅分析，提取了岩溶含水系统对降雨输入信号的过滤方式，获得了岩溶含水系统上、中、下游不同比例的快慢速流成分。分析结果表明，相干谱和交叉振幅分析方法在岩溶含水系统水动力特征研究中具有较好的实用性。

英文摘要：

In order to analyze the hydrodynamic characteristic of karstic water system, the coherency and cross-amplitude analysis are adopted to study the hydrodynamic characteristics in Houzhai karstic water system. The result of coherency analysis reveals that the existence of quick flow and slow flow components, which transmit the precipitation high linear and low linear. The cross-amplitude analysis identifies the way in which the system modified the input signal. According to the frequency width of the quick flow, the ratios of quick flow and slow flow are divided. The result shows that the coherency and cross-amplitude analysis is a practicable method tor studying the hydrodynamic characteristics in karstic water systems.