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Title

THE EFFECT OF ENSO PHENOMENON ON GROUNDWATER TABLE (CASE STUDY: ISFAHAN AND HORMOZGAN PROVINCES)

Pages

 Start Page 1 | End Page 11

Abstract

 In this study, the effect of ENSO was evaluated on GROUNDWATER TABLE changes using 22 piezometers wells located in Isfahan and Hormozgan Provinces. The results showed that among 10 ENSO indexes, the Pacific North American Index (NOI) and the Multivariable Enso Index (MEI) presented the maximum correlation of GROUNDWATER TABLE in Isfahan and Hormozgan provinces, correspondingly. In Isfahan the percent of wells that had significant correlation between GROUNDWATER TABLE and MEI was 26%. In Hormozgan the correlation for NOI was 55%. The comparison of correlation values of GROUNDWATER TABLE in each province with El Niño and La Niña phases indicated that the effect of El Niño phase on GROUNDWATER TABLE in both provinces was more than La Niña phase; as in each province, the number of stations with significant correlation in El Niño phase was more than La Niña phase. In Isfahan province, the effect of El Niño phase on GROUNDWATER TABLE changes was more than Hormozgan province (64% compared to 36%). The results of percent of GROUNDWATER TABLE changes in each province in La Niña to El Niño phases illustrated that there was no similarity and matching behavior in the studied stations.

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