Prethodno priopćenje
Heterogeneity influence on groundwater age
Morena Galešić
; Faculty of Civil Engineering, Architecture and Geodesy, University of Split, Matice Hrvatske 15, HR-21000 Split, CROATIA
Hrvoje Gotovac
; Faculty of Civil Engineering, Architecture and Geodesy, University of Split, Matice Hrvatske 15, HR-21000 Split, CROATIA
Sažetak
Groundwater age is considered as an important water property and can indicate its quality. Insufficient number of data and measurements in the subsurface has been mitigated by using direct simulation of groundwater age. Numerical model is developed using Lagrangian approach and random walk particle tracking method, where groundwater age is calculated as travel time of certain particles including the processes of advection and dispersion. For proposed method, flow calculation is the basic input; hence an upgrade has been done to existing software solution in order to get correct groundwater age simulations and continuous velocity fields. Synthetic examples were
simulated for homogeneous, layered and for low and medium heterogeneous aquifer systems. For the heterogeneous aquifer system a stochastic analysis has been done using a Monte Carlo simulations. The results are given as groundwater age fields. An application is recognized in possibility to estimate the expected groundwater age at certain location of water intake. Therefore, calculated probability distributions may be used as decision support tool in order to estimate the level of aquifer's auto purification, or to apply certain level of water treatment before usage.
Ključne riječi
groundwater age; Lagrangian approach; random walk particle tracking method; heterogeneity; Monte Carlo simulation; probability distributions of groundwater age
Hrčak ID:
184965
URI
Datum izdavanja:
18.7.2013.
Posjeta: 346 *