【摘要】 根据中牟县17口地下水观测井1990—2015年地下水埋深资料,采用Morlet小波函数分析了不同尺度地下水位变化特征。研究结果表明,中牟县地下水年尺度动态变化主要存在3类尺度的周期变化规律,其中25 a左右时间尺度为地下水位变化的第一主周期,36、10 a分别为第二、第三主周期;春、夏、秋、冬4个季节尺度下,地下水动态变化均以25 a左右时间尺度为第一主周期。年尺度和季节尺度降水量周期性变化对地下水埋深变化均具有一定的相关性。更多还原

【Abstract】 According to the groundwater depth data of 17 groundwater observation Wells in Zhongmou county from 1990 to 2015, the variation of the groundwater level at different scales were analyzed by using Morlet wavelet function. The results showed that there were mainly three types of periodic change rules for the dynamic change of annual groundwater scale in Zhongmou county, of which the time scale around 25 years was the first main period of groundwater level change, and the second and third main periods were 36 years and10 years respectively. At the four seasonal scales of spring, summer, autumn and winter, the dynamic change of groundwater took the time scale of about 25 years as the first main cycle. Periodic changes of annual and seasonal precipitation had a certain correlation with the changes of groundwater depth.更多还原