Analysis of Recent Droughts in Iranshahr Region with the SPI Method

Dryness and drought are two undeniable facts of the under study climatic conditions that without considering them any planning and forecasting result in failure. Drought phenomenon has climatic nature and mainly results from abnormal conditions and disorders in precipitation. Iranshahr region is considered as one of the important cultivation, population and industrial scopes in sistan and Baluchestan province by including particular climatic conditions, From the appearance of drought phenomena point of view and the result arising from it in reducing products from the under cultivation level and the amount of production has sustained a lot of damages from this way. This area of south-eastern has high changes of index form the yearly, seasonal and monthly rains point of view as like as most areas of Iran. By regarding to standard precipitation index (SPI) 14 periods in Iranshahr station (1358-1384statistical years),14 periods in Daman station (1359-1384statistical years), 19 periods in Bampoor station (1349-1384 statistical years) and 12 periods of drought in Golmorti station (1363-1384 statistical years) which has happened such a drought with awful consequences for this area. This research is going to resort toward assigning the yearly rain changes and the frequency of seasonal wet and drought periods of the region stations by using the SPI averages to be able present the solutions for confronting with these phenomena to reduce the damages.