Determination of Groundwater Recharge Area by Using Hydroisotope Technic of Sei Bingei Area and Surrounding Areas, Langkat Regency, North Sumatra

Abstract

Determination of Groundwater Recharge Area by Using Hydroisotope Technic of Sei Bingei Area and Surrounding Areas, Langkat Regency, North Sumatra

Identifying spring recharge areas using stable isotope and geophysical methods: A case study of the Ababi Mountain Region, Bali, Indonesia

“…The stable isotope approach can be used to de ne locations that receive spring recharge and groundwater. Several Indonesian regions-Bali in particular-have used the isotopic technique to determine groundwater genesis (Maria et al, 2021;Nuha et al, 2020;Toulier et al, 2019), particularly in Bali. The application of isotope 18O and 2H methods in Denpasar City to delineate the groundwater recharge zone in urban areas (Ardana et al, 2022).…”

“…In units of ‰ (per mil), the notations (δD)SMOW and (δ 18 O)SMOW are denoted as (δD) and (δ 18 O), respectively. δ smpl was used to express the sample isotopes' relative abundance(Nuha et al, 2020):(1) sampling site; hence, equations 2 and 3 must be used to calculate the average value(Kresic & Stevanovic, 2010;Clark, 2015):…”