Assessment of spatial changes and the effect of climatic elements affecting the occurrence of dust phenomenon in two sources inside and outside by remote sensing technique

Subject Areas : Applications in natural hazard and disaster

Sedigheh  Iosefi ¹ (PhD student in Environment Engineering Science, Islamic Azad University, Branch Bandarabass, Iran)
Hossein  Gharehdaghi ² (Assistant Professor, Department of Natural Resources and Agriculture, Faculty of Natural Resources, Islamic Azad University, Branch Arsanjan, Fars, Iran)
Marzieh  Rezaie ³ (Assistant Professor, Department of Natural Resources, Faculty of Agriculture and Natural Resources, University of Hormozgan, Bandarabbass, Iran)

Received: 2021-09-21 Accepted : 2021-12-14 Published : 2023-03-21

Keywords: Monitoring, Erosion, dust, plant cover,

Abstract :

Iran's location in the desert belt of the northern hemisphere, rainfall irregularities, multiple droughts and poor vegetation have caused the phenomenon of dust in the country. This phenomenon is one of the most important environmental hazards that causes a lot of damage every year in different parts, especially in the southern and southwestern provinces of the country. The present study investigates the causes of dust storms in Hormozgan province in the period from 2002 to 2009. In this study, which was conducted using the statistics of the Meteorological Organization of Iran in five synoptic stations of Hormozgan province, dust days with two sources near and outside the synoptic stations were extracted and after annual and monthly monitoring of storms, using climatic elements. And Plant Index (EVI) was investigated for dust storms using multivariate regression. The results show that dust with a source close to the station causes the most dust days in the region, so that more than 65% of dust days caused by dust originates near the station and the most occurrence of dust occurred in the warm season. Overall, the results of this study indicate that the simultaneous use of ground measurements and satellite images has a good ability to monitor and investigate dust storms. Due to the fact that most of the dust in this area is close to the station, it is possible to reduce the significant volume of these storms by biological and mechanical measures and to deal with wind erosion.