چکیده مقاله
As drought intensity and frequency have increased over recent years in Isfahan province, improving water resources risk management is so essential Identifying the factors that influence in Isfahan precipitation could progress the water recourses risk management This study is aimed to determine the potential impact of Mediterranean oscillation on drought events of Isfahan province The correlations between four Mediterranean oscillation indices including: Western Mediterranean Oscillation WeMO , Mediterranean Circulation Index MCI , Mediterranean Oscillation Algiers/Cairo MOac and MediterraneanOscillation Gibraltar/Israel MOgi versus Standard Precipitation Index SPI in 3, 6 and 12 months timescale in some synoptic stations in Isfahan for the period of the last 20 years 1989 2008 were analyzed separately The results showed that Mediterranean oscillations during June are related withdroughts in Isfahan non simultaneously In seasonal timescale, a significant correlation between WeMO index and spring April June drought was found; and MCI, MOac and MOgi indices are correlated with winter January March drought significantly Correlation between 6 and 12 months SPI and Mediterranean indices were weak It seems that the strongest impact of Mediterranean oscillation isreceived in west and south parts of Isfahan Since there was a long lag time among Mediterranean oscillation indices and drought periods, Mediterranean oscillation indices could be beneficial for Isfahan drought forecasting and improving water recourses risk management Also, physical mechanism responsible for co variability of Mediterranean oscillation and Isfahan rainfall are recommended for further study
کلیدواژهها
نویسندگان
Rabbaneh Roghani
Graduate student, Department of Natural Resources, Isfahan University
Saeid Soltani
Associate professor, Department of Natural Resources, Isfahan University of Technology
شیوه ارجاع
Roghani, Rabbaneh and Soltani, Saeid,1391,Investigation of the relationship between Mediterranean ocean atmospheric oscillation and drought in Isfahan province,9th International Congress on Civil Engineering,Isfahan
ارائهشده در
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