Drought is universal phenomenon that can occur everywhere and can cause harmful impacts on human beings and natural ecosystems. Thus, it is very important to study drought character ristics part of for water resources management. In this study, the Standardized Precipitation Index (SPI) is used for drought frequency analysis in Isfahan province. After collecting the precipitation data in the province stations and removing those stations with incomplete data, frequency analysis of drought was carried out by 12-month SPI time series scale end of March. Then, the maps of drought return periods were prepared and analyzed by SURFER software. These maps show that moderate and severe drought with long return period mainly in the west the province and extreme drought events in the east and north east of the province with short return periods which indicate high sensitivity and the necessity for suitable managing programs to deal with the problem of drought.
Saadati,S , Soltani,S and eslamian,S . (2009). Statistical analysis of return period of drought conditions in Isfahan province using the Standardized Precipitation Index. Journal of Range and Watershed Managment, 62(2), 257-270.
MLA
Saadati,S , , Soltani,S , and eslamian,S . "Statistical analysis of return period of drought conditions in Isfahan province using the Standardized Precipitation Index", Journal of Range and Watershed Managment, 62, 2, 2009, 257-270.
HARVARD
Saadati S, Soltani S, eslamian S. (2009). 'Statistical analysis of return period of drought conditions in Isfahan province using the Standardized Precipitation Index', Journal of Range and Watershed Managment, 62(2), pp. 257-270.
CHICAGO
S Saadati, S Soltani and S eslamian, "Statistical analysis of return period of drought conditions in Isfahan province using the Standardized Precipitation Index," Journal of Range and Watershed Managment, 62 2 (2009): 257-270,
VANCOUVER
Saadati S, Soltani S, eslamian S. Statistical analysis of return period of drought conditions in Isfahan province using the Standardized Precipitation Index. JRWM. 2009;62(2):257-270 (In Persian).
