PORÓWNANIE ZASILANIA INFILTRACYJNEGO OSZACOWANEGO ZA POMOCĄ ZINTEGROWANEGO MODELU ZLEWNI Z ROZWIĄZANIEM ZADANIA ODWROTNEGO

Abstract

COMPARISON OF GROUNDWATER RECHARGE ESTIMATION BASED ON INTEGRATED CATCHMENT MODELLING AND INVERSE MODELLINGAbstract. Groundwater flow modelling seems to be one of the most important tools of modern hydrogeology. It is used mainly to calculate spatial distribution of piezometric head in different scales of water flow. The infiltration recharge is a key component for estimating water resources. Using a physically based, distributed and integrated modelling system, such as MIKE SHE, it is feasible to calculate recharge as exchange rate between unsaturated and saturated zones. There is also another approach based on inverse problem. Allison (1988) has proposed a modification to a two-dimensional water flow equation in order to omit most critical disadvantages of ill-posed inverse problem (which is the case of inverse modelling of groundwater flow). In this paper, recharge calculated by an integrated model has been compared to estimations based on inverse modelling.