آنالیز الگوهای فضایی خشک سالی با استفاده از شاخص SPI در استان گلستان
عنوان مقاله English
Analysis of Spatial Drought Patterns Using the SPI Index in Golestan Province
نویسندگان English
Scarcity in precipitation along with great variability is the most feature of climate in Iran. Drought as a
phenomenon of climate, leaving behind undesirable effects every year in Iran. The purpose of this study was
investigation of the spatial characteristics of drought using SPI index in monthly scale in Golestan province.
Therefore, the 35-year rainfall data from 23 climate stations were used. Monthly Moving Average chart
reviews showed that withincreasing time scales, the severity of the drought is reduced while the drought
duration is increased.The highest intensity and frequency of droughts were occured in the northeast stations
in Golestan province. Zoning map was also showed the drought prone zone increases while changing time
scales from 3-month to 24-month.
کلیدواژهها English
