حسین رشیدی گویا

Based on existing studies, earthquakes cause changes in the groundwater levels; however, the mechanism of these changes has not been accurately identified so far. One of the main objectives of this research is to determine the factors which directly or indirectly influence the intensity of the groundwater level changes after an earthquake. In this research, some of the factors that caused the increase or decrease of the groundwater level of the Sarpol-e Zahab aquifer after the earthquake on November 12, 2017, have been investigated. Linear regression analysis was used to compare the correlation between the factors which decrease or increase the groundwater levels and the groundwater level changes. The results show relatively high correlation between the RT (resistivity of the saturated zone multiplied by the thickness of the saturated zone) values and the increase in groundwater levels with a correlation coefficient of r=0.70. Also, the water table depth (WTD) with r=0.54 and the extensional area caused by strike-slip fault with r=0.48 had the highest correlation with the decrease in groundwater levels.