Study of Deposition Rate and Dust Particle Size Distribution with Attention to Soil Properties in Hoveizeh-Khorramshahr Supercritical Source

Dust storms can be one of the most important causes of air pollution in areas with dust sources and also in nearby areas. The purpose of this study was to investigate the changes rate of deposition and the pattern of particle size distribution of dust due to climatic factors around the dust. For this purpose, 30 stations were selected to install marine sediment Marbles traps in the city of Hoveizeh and Susangerd. Each month after collecting the dust samples, the rate of deposition and particle size distribution pattern of the dust were determined. The results of the dust particle deposition showed that the highest and the lowest monthly dust deposition occurred in May and March, respectively. The particle size distribution results showed that silt components form more than 80% of the deposited dust particles. Regarding the similarity of the texture of dust particles with the soil texture of the Hoveizeh-Khorramshahr dust source and also the land features and wind direction pattern of the study area, the origin of these dust storms is known to be from the neighboring areas of Khuzestan province, and probably from the Hoveizeh dust source and the dried wetlands in Iran-Iraq border.