Study of hydrodynamics of karstic aquifer based on grey correlation analysis

In karst systems, rain events often result in different change at springs. This study shows how long required for water to flow through a karst aquifer based on grey correlation analysis and provides a good way to understand the karstic hydrodynamics. The result indicates that the distortion degree of the precipitation input is lower upper reaches than lower reaches. A conduit-fissure type karst system is characterized that allows rapid transit of water flow through the aquifer in the upper reaches.