Document Type : Research Paper
General Department of Natural Resources and Watershed Management of Qom Province
Faculty of Geography, University of Tehran
Professor, Department of Geography, Shahid Beheshti University, Tehran
Associate Professor, Department of Geography, Shahid Beheshti University, Tehran
Today, the dust problem has become a regional and global crisis. Dust and sandstorms can be considered as funding sources for the formation of sand dunes. The purpose of this study is to investigate the movement of dust production sources and their role in the formation of sand dunes in the Jalali sandy area located in the east of Qom province. The research data includes library information, sampled points as well as information obtained from meteorological stations in Qom province and using the HYSPLIT model. The tools used in the research include climatic data from ArcGIS, WRPLOT, Google earth, Excel and NOAA satellite data. During the years (1987-2019), 89% of dust occurrence occurred in the warm half of the year and 11% in the cold half of the year. The drawn flowers of the three stations of Kuh-e-Sefid, Qom and Kushk-e-Nusrat show the superiority of the east, southeast, west and southwest directions towards Qom city. Dust also emphasizes dominance in the east in hot seasons. Routing and movement of dust in the sampled points at altitudes up to 1000 m and 1000 to 1500 m in reverse using the HYSPLIT model showed the external origin, deserts of Saudi Arabia, Syria and Iraq and the internal origin of the salt lake and plain Abandoned agricultural lands and lands have a more prominent role in the production of dust sources and the formation of glorious sand dunes.
Keywords: Dust, Rose, HYSPLIT, WRPLOT, Jalali Sands.