Application of spectrum analysis method to the prediction ofgroundwater regime in west Jilin province
Yang Zhong · Shuiwen dizhi gongcheng dizhi · 2005
In this paper, the spectrum analysis method is applied to the prediction of groundwater regime in west Jilin province. The water level sequence is expanded in a certain range after the trend is eliminated by using Fourier series. The relation among spectrum parameters is analyzed and the prediction model is set up. The model results show that the groundwater level in this area has two major periods, 1 year and 6 to 8 years, which reflect the seasonal and climatic variation of the groundwater level. The prediction result indicates that the groundwater level of several regions will decline continually, and measures should be taken in time. The results of this work can provide evidence for groundwater development and water resources management in this area.