Analysis on Water Level & Pressure Observation Data of Ma-17 Well Since 2000

In this paper the water level & pressure observation data of Ma-17 well since 2000 is collected and analyzed.First, the impact of energy changes on water of the well is analyzed using daily extremum difference method.Second, the earth tidal effect and its characteristics is studied qualitatively and quantitatively using scatter diagram of piecewise data according to time graphs and the method of analysis of all time sliding.Third, the relationship between water level and pressure in long time period is analyzed using the sliding first-order linear regression, and the characteristics of pressure effect is explained.Finally, based on the well water level observation data change phenomenon before and after the Huaizhen earthquake, Wen'an earthquake, Wenchuan earthquake, the mechanism of the changes and variations of water level is discussed, the changing trend of its development is explored in order to make Ma-17 well play a greater role in earthquake prediction work in future.