Commenced in January 2007
Paper Count: 31105
Regional Analysis of Streamflow Drought: A Case Study for Southwestern Iran
Abstract:Droughts are complex, natural hazards that, to a varying degree, affect some parts of the world every year. The range of drought impacts is related to drought occurring in different stages of the hydrological cycle and usually different types of droughts, such as meteorological, agricultural, hydrological, and socioeconomical are distinguished. Streamflow drought was analyzed by the method of truncation level (at 70% level) on daily discharges measured in 54 hydrometric stations in southwestern Iran. Frequency analysis was carried out for annual maximum series (AMS) of drought deficit volume and duration series. Some factors including physiographic, climatic, geologic, and vegetation cover were studied as influential factors in the regional analysis. According to the results of factor analysis, six most effective factors were identified as area, rainfall from December to February, the percent of area with Normalized Difference Vegetation Index (NDVI) <0.1, the percent of convex area, drainage density and the minimum of watershed elevation that explained 90.9% of variance. The homogenous regions were determined by cluster analysis and discriminate function analysis. Suitable multivariate regression models were evaluated for streamflow drought deficit volume with 2 years return period. The significance level of regression models was 0.01. The results showed that the watershed area is the most effective factor with high correlation with deficit volume. Also, drought duration was not a suitable drought index for regional analysis.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1328001Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1438
 L. Abdullaev, and K. Jumaboev, (2004) "Water Management and Drought Mitigation Strategies: Application of IWMI experience for CAC region". Www. IWMI.org.
 S.R. Chalise, S.R. Kansakar, G. Rees, K. Croker, and M. Zaidman, "Management of water resources and low flow estimation for the Himalayan basins of Nepal", Journal of Hydrology, No. 282, Issues 1-4, 2003, pp. 25-35.
 J.A. Dracup, K.S. Lee, and E.G. Paulson, "On the definition of droughts," Water Resources Research 16 (2), 1980, pp. 297-302.
 A.K. Fleig, L.M. Tallaksen, H. Hisdal, and S. Demuth, "A global evaluation of streamflow drought characteristics," Hydrology and Earth System Sciences sions, vol. 10, 2006, pp.535-552.
 C.T. Haan, "Statistical Methods in Hydrology," Ames, Iowa: The Iowa State University Press, 1977, pp. 130-160.
 A.G. Henriques, and M.J.J. Santos,. "Regional drought distribution model," in Physics and chemistry of the earth. Part B. Hydrology, oceans and atmosphere, European water, 1999.
 H. Hisdal, K. Stahl, L.M. Tallaksen, and S. Demuth, "Have streamflow droughts in Europe become more severe or frequent?," International Journal of Climatology vol. 21, 2001, pp.317-333.
 H. Hisdal, and L.M. Tallaksen, (Eds) "Drought event difention," ARIDE Technical Report No.6, University of Oslo, Norway, 2000.
 H. Hisdal, and L.M. Tallaksen, "Estimation of regional, meteorological and hydrological drought characteristics: a case study for Denmark," Journal of Hydrology, vol. 281, 2003, pp. 230-247.
 W. Jacubowski, and L. Radczuk, NIZOWKA2003 Software, Agricultural University of Wroclaw, Poland, 2003.
 Jamab Engineering consultants Company, "The report of Iran Water comprehensive plan," Iran water Resources Management Organization publication, 2000, pp. 30-85.
 R.T. Kjeldsen, A. Lundrof, and D. Rosbjerg, "Use of a two-component exponential distribution in partial duration modeling of hydrological drought in Zimbabwean rivers," Hydrological science journal, vol. 45(2), 2000, pp. 285-298.
 A. Longobardi, and P. Villani, "Baseflow index regionalization analysis in a Mediterranean area and data scarcity context: Role of the catchment permeability index," Journal of Hydrology, vol. 355(1-4), 2008, pp. 63- 75.
 R.T. Nathan, and T.A. McMahon, "Identification of homogeneous regions for the purpose of regionalization," Journal of Hydrology, vol. 121, 1990, pp. 217-238.
 G. Nutzmann, and S. Mey, "Model-based estimation of runoff changes in a small lowland watershed of north-eastern Germany," Journal of Hydrology, vol. 334(3-4), 2007, pp. 467-476.
 Z. Radic, and V. Mihailovic, "Development of monitoring system for Serbia hydrological droughts analysis," Serbia Water National Program "Hydrological bases of water resources and international cooperation ". NPV - 21A, 2005.
 Z. Sen, "Regional drought and flood frequency analysis: theoretical consideration," Journal of Hydrology vol. 46, 1980, pp. 265-279.
 L.M. Tallaksen, "Streamflow drought frequency analysis," in Drought and Drought Mitigation in Europe, J.V. Vogt and F. Somma Ed. Kluwer Academic Publishers, the Netherlands, 2000, pp.103-117.
 L.M. Tallaksen, and H. Hisdal, "Regional analysis of extreme streamflow drought duration and deficit volume," in FRIEND-97- Regional Hydrology: Concepts and Models for Sustainable Water Resource Management, A. Gustard, S. Blazkova, M. Brilly, S. Demuth, J. Dixon, H. Van Lanen, C. Llasat, S. Mkhandi, and E. Servat, Ed. IAHS Publication vol. 246, 1997, pp. 141-150.
 D.A. Wilhite, and M.H. Lantz, "Understanding the drought phenomenon: the role of definitions," Water International vol. 10 (3), 1985, pp. 111-120.
 V. Yevjevich, "An objective approach to definition and investigations of continental hydrologic droughts," Hydrology Papers 23, Colorado State University, Fort Collins, USA, 1967.
 V. Yevjevich, "Methods for determining statistical properties of droughts," in Coping with droughts, V. Yevjevich, L. da Cunha, and E. Vlachos, Ed. Colorado, Water Resources Publications, 1983, pp. 22-43.
 M.D. Zaidman, H.G. Rees, and A.R. Young, "Spatio-temporal development of streamflow droughts in north-west Europe," Hydrology and Earth System Sciences, vol. 5(4), 2001, pp. 733-751.
 E. Zelenhasi'c, and A. Salvai, "A method of streamflow drought analysis," Water Resour. Res., vol. 23(1), 1987, pp. 156-168.