Scientific- Research Quarterly of Geographical Data (SEPEHR)

Scientific- Research Quarterly of Geographical Data (SEPEHR)

Study of Spatial and Temporal Distribution of Droughts Occurred in Hamadan Province Using Geographic Information System (GIS)

Document Type : Research Paper

Authors
Ali Akbar Sabzi Parvar 1
Zohreh Merianji 2
Abbas Karami 3
1 Ph.D. of Synoptic Meteorology
2 Master of Climatology
3 Master of Geography
Abstract
In order to study the temporal and spatial distribution of drought in Hamadan province, statistics of eleven of province stations for a period of 27 years was used, and after performing validation and homogeneity tests, it was normalized with drought by the Gibbs and Mohr method, and SPI index for years of drought occurrence in the province was determined. According to this, in the years 1996 and 1999 the most severe drought has occurred. After the dry years were determined based on the Gibbs and Mohr method, the related maps were drawn up to determine its dispersion across the province, and finally, using the ranking of these indices, the final map was drawn according to which the intensity of droughts decreases from east to west, namely, the eastern and central regions have been more susceptible to drought in comparison with other parts of the province.
Keywords
Drought
Gibbs and Mohr Method
SPI index
geographic information system (GIS)
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Scientific- Research Quarterly of Geographical Data (SEPEHR)
Volume 14, Issue 53
Spring 2005
Pages 48-52