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Ahmadabadi A, Ahmadabadi A, Ghanavati E. Analysis of the spatial relationship between dust and wind erosion in the cities of Aradan and Garmsar. E.E.R. 2025; 15 (4)
URL: http://magazine.hormozgan.ac.ir/article-1-899-en.html
URL: http://magazine.hormozgan.ac.ir/article-1-899-en.html
Kharazmi university , ahmadabadi@khu.ac.ir
Abstract: (3 Views)
. The majority of the Aradan and Garmsar counties exhibited very low, low, and moderate levels of dust dispersion, showing a clear north-south trend. The average dust concentration across these counties also follows this north-south gradient. Since dust concentration is inversely related to horizontal visibility, areas along the Mashhad-Qom and Mashhad-Tehran roads, as well as urban and rural centers located in zones with very low and low visibility, experience very high dust levels. In contrast, the southern regions closer to Khorasan National Park and the salt lake show higher visibility and correspondingly lower dust concentrations compared to the northern part of the study area.
The wind erosion zones were classified into a detachment zone covering 1060 km² (about 11%), a transport zone in the east of Aradan county and Khorasan National Park covering 20 km² (0.02%), and a deposition zone of 112.3 km² (about 1%). Field visits confirmed the presence of active clay and sandy plains in the detachment zone and sand dunes, nebkhas, and sand tongues in the deposition zone. The resulting erosion zone maps highlight that the southern and eastern parts of the counties, especially near Khorasan National Park, exhibit the most intensive erosion activities.
The spatial distribution of wind erosion zones on the dust dispersion map shows two distinct categories: the first is near urban and rural areas and infrastructure such as the Mashhad-Qom and Mashhad-Tehran roads; the second is in the southern and southeastern parts of the study area where all three wind erosion stages (detachment, transport, and deposition) occur.
Keywords: Wind Erosion, Dust, Detachment, Transition and sediment zone, The Aradan and Garmsar counties.
Received: 2025/06/10
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