SPATIOTEMPORAL ANALYSIS OF HISTORICAL DROUGHTS IN THE CENTRAL ANATOLIA, TURKEY

Year 2014, Volume: 27 Issue: 4, 1177 - 1184, 24.11.2014

Osman Yıldız

Abstract

The spatiotemporal characteristics of meteorological droughts in the Central Anatolia, a semiarid region in Turkey, are determined utilizing the Standardized Precipitation Index (SPI) as a measure for drought severity. With a surface area of nearly 150,000 km² the region is subjected to frequent and widespread drought events. The regions contains upstream drainage areas of the Kızılırmak and Sakarya rivers, two major water resources of the country supplying flows to several multipurpose reservoirs along their course. Using the temporal and spatial characteristics of monthly SPI, drought intensity-areal extent-frequency curves for various return periods are constructed for the region, and then the spatio-temporal characteristics of selected historical droughts are evaluated. The results indicate that the region is usually under the influence of droughts with low return periods, in other words, high frequency droughts during the study period (from 1956 to 2004). But, the areal extent of droughts may be significant to adversely affect the water resources of the region. The overall evaluation of study results reveal that this method can provide useful information for spatial and temporal variations of droughts and can be utilized for water resources management in this region. 

Keywords

Drought, SPI, frequency curve, semi-arid region, the Central Anatolian Region, Turkey.

References

• [1] Dracup, J.A., Lee, K.S. and Paulson, Jr. E.G., “On the definition of droughts”, Water Resources Research, 16(2): 297-302, (1980).
• [2] Wilhite, D.A. and Glantz, M.H., “Understanding the drought phenomenon: the role of definitions”, IWRA, Water International, 10(33): 111–120, (1985).
• [3] National Drought Mitigation Center, “Drought Science: Understanding and Defining Drought”, http: // www.ngdc.noaa.gov/paleo/drought/ , (2006).
• [4] Mishra, A.K. and Singh, V.P., “Analysis of drought severity–area–frequency curves using a general circulation model and scenario uncertainty”, J. Geophys. Res., 114: D06120.
• doi:10.1029/2008JD010986, (2009). [5] Mishra, A.K. and Singh, V.P., ”Drought modeling – A review”, Journal of Hydrology, 403: 157–175, (2011).
• [6] Clausen, B. and Pearson, C.P., “Regional frequency analysis of annual maximum streamflow drought”, Journal of Hydrology, 173(1–4): 111–130, (1995).
• [7] Shin, H.S. and Salas, J.D.,”Regional drought analysis based on neural networks”, Journal of Hydrologic Engineering, 5(2): 145-155, (2000).
• [8] Kim, Tae-W., Valdés, J.B. and Aparicio, J., “Frequency and spatial characteristics of droughts in the Conchos River basin, Mexico”, IWRA, Water International, 27(3): 420-430, (2002).
• [9] Sırdaş, S. and Şen, Z., “Spatiotemporal drought analysis in the Trakya region, Turkey”, Hydrological Sciences Journal, 48(5): 809-820, (2003).
• [10] Hisdal, H. and Tallaksen, L.M., “ Estimation of regional meteorological and hydrological drought characteristics: a case study for Denmark”, Journal of Hydrology, 281(3): 230-247, (2003).
• [11] Vicente-Serrano, S.M. and López-Moreno, J.I., “Hydrological response to different time scales of climatological drought: an evaluation of the standardized precipitation index in a mountainous Mediterranean basin”, Hydrology and Earth System Sciences, 9: 523-533, (2005).
• [12] Mishra, A.K. and Desai, V.R., “Spatial and temporal drought analysis in the Kansabati River Basin, India”, Int. J. River Basin Management, 3(1): 31–41, (2005).
• [13] Andreadis, K.M., Clark, E.A., Wood, A.W., Hamlet, A.F. and Lettenmaier, D.P., “Twentiethcentury drought in the conterminous United States”, Journal of Hydrometeorology, 6: 985–1001, (2005).
• [14] Vicente-Serrano, S.M., “Spatial and temporal analysis of droughts in the Iberian Peninsula”, Hydrological Sciences Journal, 51(1): 83-97, (2006).
• [15] Yıldız, O., “Investigating Frequency and Spatial Characteristics of Droughts in the Central Anatolian Region, Turkey”, International Congress River Basin Management, Antalya, Turkey, Vol. 2, pp. 235-243, (2007).
• [16] Yıldız, O., ”Assessing Temporal and Spatial Characteristics of Droughts in the Hirfanli Dam Basin, Turkey”, Scientific Research and Essays, 4(4): 249- 255, (2009).
• [17] Burke, E.J. and Brown, S.J., ”Regional drought over the UK and changes in the future”, Journal of Hydrology, 394: 471–485, (2010).
• [18] Núñez, J.H., Verbist, K., Wallis, J.R., Schaefer, M.G., Morales, L. and Cornelis, W.M., “Regional frequency analysis for mapping drought events in northcentral Chile”, Journal of Hydrology, 405: 352–366, (2011).
• [19] Türkeş, M., “Spatial and temporal analysis of annual rainfall variations in Turkey”, International Journal of Climatology, 16: 1057-1076, (1996).
• [20] Komuscu, A.Ü., “An analysis of recent drought conditions in Turkey in relation to circulation patterns”, Drought Network News, 13(2-3): 5-6, (2001).
• [21] The Turkish State Hydraulic Works (www.dsi.gov.tr).
• [22] Turkish State Statistics Institute, “Agricultural Status, Production, Cost, Price (1967-2002)”, http://www.die.gov.tr/, (2002).
• [22] McKee, T.B., Doesken, N.J., Kleis, J., “The Relationship of Drought Frequency and Duration to Time Scales”, Reprints of 8th Conference on Applied Climatalogy, Anaheim, CA, USA, 179-184, (1993).
• [23] Henriques, A.G. and Santos, M.J.J., “Regional drought distribution model”, Phys. Chem. Earth (B), 1- 2: 19-22, (1999).