DROUGHT ANALYSIS OF THE CEYHAN BASIN IN TURKIYE USING DIFFERENT INDICES BASED ON PRECIPITATION

Abstract

Drought is one of the most important natural disasters threatening life, and its impact is becoming more evident daily. Therefore, it is important to analyse the drought regionally, which is expected to substantially impact the Mediterranean region, and develop adaptation strategies against it. In this study, drought analyses were carried out in the Ceyhan Basin for 12-month time periods with various indices using precipitation and temperature data between 1989-2019. Standardized Precipitation Index (SPI), Reconnaissance Drought Index (RDI), and Deciles Index (DI) methods were used to analyse the dry periods in the region. According to the results of these methods, the periods, including extremely dry and wet years, were analysed and compared. As a result, the driest year was found to be 2014, and the wettest year was found to be 2010. Keywords: Drought, Standardized Precipitation Index, Deciles Index, Reconnaissance Drought Index, Ceyhan Basin