انجمن هیدرولیک ایران نشریه علمی هیدرولیک 2345-4237 6 2 2011 08 23 Numerical Modeling of the Freshwater Lens in Small Islands (Case Study of Kish Island) مدل سازی عددی لنز آب شیرین در جزایر کوچک (مطالعه موردی جزیره کیش) 45 56 85495 10.30482/jhyd.2011.85495 FA محمدمهدی رجبی حامد کتابچی 0000-0003-4643-1415 بهزاد عطائی آشتیانی Journal Article 2011 03 23 The groundwater system in many small islands consists of a freshwater lens surrounded by seawater.<br />A transition zone exists between the freshwater and the seawater in which relative salinity gradually<br />changes from zero to 100 percent. Saltwater intrusion is the most important hazard to groundwater<br />quality in small islands. Kish Island is one of the few islands in the Persian Gulf with extractable fresh<br />groundwater resources. This paper presents details of a comprehensive study conducted to model<br />seawater intrusion in Kish Island. Three dimensional numerical simulations were carried out using<br />SUTRA a density dependent flow and transport numerical model. Model calibration was performed by<br />Inverse modeling. For this purpose the PEST inverse code was combined with SUTRA. Finally model<br />sensitivity was evaluated for aquifer recharge and permeability. This study shows that SUTRA can be<br />regarded as a valuable tool in saltwater intrusion modeling. This is mainly due to the model`s ability to<br />simultaneously solve flow and solute transport equations, as well as other key features of the model<br />such as its ability to simulate the transition zone and the unsaturated layer above the main aquifer and<br />to model the groundwater system in three dimensions. https://jhyd.iha.ir/article_85495_29fa7ee76c445ce283a816ff7782fc0a.pdf