Study on Dynamic Characteristics of Groundwater based on the Time Series Analysis Method

According to many years' groundwater monitoring data of Jinan City,using the multiple regression model to analyse the dynamic characteristics of karst groundwater in Jinan.The annual dynamic characteristics of groundwater level presented obvious seasonal.With the time elapse,the influence of rainfall on the ground water level decreased gradually and the groundwater exploitation gradually increased.The time series analysis method was used to separate trend term,periodic term and randomentry of ground water series,and established the prediction model of groundwater level,the calculated results was consistent with actual situation.Providing the scientific basis to rational use of the karst water,springs protection and groundwater monitoring management.