Štuopis, A., Juodkazis, V., Mokrik, R.
Quaternary aquifer system flow modelling using chemical and
tritium isotope data: the case of south-east Lithuania
The hydrogeological schematisation of the multi-layered
stratigraphical sequence and the results of groundwater flow modelling by
MODFLOW code for the Quaternary aquifer system of the south-eastern part of
Lithuania have been discussed in the paper. The regional groundwater
steady-state flow model has been calibrated applying hydrochemical and isotope
data. A tritium isotope data set for groundwater in upland, transit and lowland
sites has been used to identify the flow model for water residence time.