Document Type : Original Article
Authors
1 M.Sc. Graduated, Borujerd Branch, Islamic Azad University, Borujerd, Iran
2 M.Sc. Student, Department of Natural Resource, University of Sari, Iran
Abstract
Drought is a natural hazard that has significant impact on economic, agricultural, environmental, and social aspects. In the present study details analysis of rainfall data has been carried out for the years 1981-2011. Standard precipitation index (SPI) has been used to evaluate the precipitation deficit in the Karun watershed of Iran. The results indicated that 1981-82,82-83,83-84,84-85,88-89,89-90,90-91,93-94,96-97,98-99,99-2000,2000-2001,2002-2003,2007-2008,2008-2009, 2009-2010 and 2010-2011 the SPI values is negative. It is very anguish. And also this found threat drought the water resource and agriculture
Keywords
Zamani Poor A, (2002). Traditional methods of coping with drought and famine in the Qayenat region. The National Conference of strategies to deal with the water crisis. Zabul, 233-215.
Pereira L.S, Cordery I, and Iacovides I. (2002) .Coping with Water Scarcity .UNESCOIHPVI, Technical Documentsin Hydrology No. 58, UNESCO, Paris, 267pp. (available online: http://unesdoc.unesco.org/images/0012/001278/127846e.pdf.
Komuscu A, (1999). Using the SPI to Analyze Spatial and Temporal Patterns of Drought in Turkey. Drought Network News, 11(1): 7-13.
Bonaccorso B, Bordi I, Cancelliere A, Rossi G, Sutera A (2003). Spatial variability of drought: an analysis of SPI in Sicily. Water Resour Manag 17:273–296.
Sharma T.C, (1997). Estimation of drought severity on independent and dependent hydrologic series. Water Resources Management 11, 35–50.
Chiew F.H.S, Piechota T.C, Dracup J.A, McMahon T.A. (1998). El Nino/Southern Oscillation and Australian rainfall ,streamflow and drought: links and potential for forecasting. Journal of Hydrology, 204,138–149.
McKee T.B, Doesken N.J, Kleist J, January, (1993).Therelationshipofdrought frequency and duration to timescales. In: Eighth Conference on Applied Climatology. Anaheim, CA. Palmer W.C, (1965). Meteorological drought. Research paperno. 45,USWeather Bureau (NOAA Library and Information Services Division, Washington, DC 20852).
Palmer W.C, (1968). Keeping track of crop moisture conditions, nationwide: the new crop moisture index.Weatherwise, 21,156–161.
Mishra A.K, Singh V.P, (2010).Areviewofdroughtconcepts.J.Hydrol.391(1–2), 202–216.
Mishra A.K, Singh V.P, (2009).Analysis of drought severity–area–frequency curves using a general circulate on model and scenario uncertainty.J.Geophys.Res.114, D06120.doi: 10.1029/2008JD010986.
Mishra A.K, V.R. Desai. (2005). Drought forecasting using stochastic models. Journal Stochastic Environmental Research and Risk Assessment (SERRA). 326-339.
Richard R, J. Heim. (2002) . A review of twentieth-century drought indices used in the United State. Bulletin of the American Meteorology Society, 83(8):1149-1165
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