Groundwater vulnerability mapping using modified DRASTIC ANP

Ocjenjivanje zona osjetljivosti podzemnih voda u freatskom vodonosniku grada Nagpura u Indiji provedeno je pomoću modificirane metode DRASTIC u okruženju geografskog informacijskog sustava (GIS). U ovom se radu proces ANP po prvi put primjenjuje za modificiranje pondera parametara u okviru metode DRASTIC. Zone osjetljivosti podzemne vode, dobivene na temelju raznih pristupa DRASTIC, uspoređuju se i potvrđuju pomoću terenskih podataka o koncentraciji nitrata. Bolja korelacija uspostavljena je primjenom predloženog modificiranog postupka DRASTIC ANP.Groundwater vulnerable zones in phreatic aquifers of Nagpur city in India were evaluated using the modified DRASTIC method in the geographical Information System (GIS) environment. In the present research, the ANP was applied for the first time to DRASTIC parameters for weight modification. Vulnerable groundwater zones obtained from various DRASTIC approaches were compared and validated using field data on nitrate concentration. A better correlation was established with the proposed Modified DRASTIC ANP procedure