Analysis of the occurrence of dust and its zoning in Khorasan Razavi

In arid and semiarid region, dust happened frequently. Including, result of adverse effects the occurrence of dust is on agricultural production, soil and water pollution, diseases of the respiratory and environmental issues, social challenges, a sharp reduction in horizontal visibility and traffic accidents resulting from its. In this research, changes in the number dust occurrence on the moon, season and years studied (2004-2010) were analyzed. After calculating the number of dust per year, dust zoning done with using kriging in software ArcGIS. The results indicate that Sarakhs and Ghochan respectively had maximum and minimum dust occurrence in year. Also may and spring maximum number occurrence dust in over months and seasons of the year. The result of zoning showed that we move from center and north to the borders of the number of dust is added. The results also indicate those years of 2008 and 2005 respectively highest and lowest number of dust were in the province.