贵州后寨典型岩溶小流域水动力特征分析

以贵州后寨典型岩溶小流域为例,采用时间序列分析方法分析了岩溶含水系统的水动力特征.分析结果表明:后寨岩溶含水系统对降雨信号响应的敏感度从上游到下游不断减弱,而对降雨信号的记忆作用从上游到下游不断加强;流量对降雨信号的响应存在滞后性,滞后时间从上游到下游有规律地增加,上中游流量对降雨信号响应的线性化程度明显高于下游.

Hydrodynamic characteristic analysis of Houzhai karst watershed in Guizhou Province

Using the Houzhai karst watershed in Guizhou Province as an example,a time series analysis method was used to study the hydrodynamic characteristics of the karst aquifer system.Results obtained through autocorrelation and cross-correlation show that the sensitivity of the Houzhai karst aquifer system to the input rainfall signal decreases gradually from upstream to downstream,but the memorizing action increases gradually from upstream to downstream.The spectrum analysis shows that there is a lag in the response of discharge to the input rainfall signal and that the lag time increases regularly from upstream to downstream.The results also indicate that the degree of the linearity of the response of discharge to the input rainfall signal in the upstream and midstream is higher than that in the downstream.