List of Articles دشت سیستان

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  1 - Investigation of Relation between Meteorological and Hydrological Drought in Sistan Plain
  Artemis Roodari Farzad Hassanpour Mostafa Yaghoobzadeh Majid Delavar
  10.22034/jest.2018.18561.2745
  Background and Objective: Drought is a natural and repeatable disasterwhich affects all climates. Because of the intrinsically dry climate and low precipitation in Sistan plain, the main water resources are surface water originated from a neighboring country. This study More

  Background and Objective: Drought is a natural and repeatable disasterwhich affects all climates. Because of the intrinsically dry climate and low precipitation in Sistan plain, the main water resources are surface water originated from a neighboring country. This study investigates the relationship between meteorological and hydrological drought in Sistan plain. Method: At first, meteorological and hydrological drought were investigated by indices including moving average, SPI and SDI in Sistan plain. Moreover, the relationship between them was evaluated for 45 years. Findings: Results show that indices of meteorological and hydrological droughts do not match with each other in the entire of the study period, but there is a significant relationship between them during dry years. It was also observed that a drought period started in 1999 and continued until 2012. Discussion and Conclusion: Therefore, due to low volume and high coefficient of variations of rainfall and vital role of surface flows in the supply of water in the plain, hydrological drought shows conditions of drought is better than the meteorological drought in Sistan plain.   Manuscript profile
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  2 - Quantitative estimation of sand dunes using UAV imaging in Sistan sub-arid region
  saeed pourmorteza Hamid Gholami Alireza Rashki Navaz Moradi
  10.30495/girs.2023.691225
  Sand dunes are one of the most important facies of wind erosion. Our understanding of the complex interactions of sand dunes is often limited by the lack of accurate morphological data. The erosion and sedimentation process is very important and there is currently a lac More

  Sand dunes are one of the most important facies of wind erosion. Our understanding of the complex interactions of sand dunes is often limited by the lack of accurate morphological data. The erosion and sedimentation process is very important and there is currently a lack of field data for executive projects, study plans and validation of erosion and sedimentation models. Images of the study area were taken using a Phantom 4 Pro UAV at an altitude of 60 meters on September 22, 2019. This type of UAV, which is small and light, with its 20-megapixel camera and GPS, can provide high quality images. After separating the dunes, a three-dimensional area in terms of square meters and volume in terms of cubic meters were obtained. And the product of a small amount of bulk density of soil in terms of cubic centimeters and the volume of dunes in terms of cubic meters The weight of the dunes was obtained in terms of tons.In the study, the slope percentage and sediment height were determined based on the windward part and the wind shelter of the dune The highest wind area was slope 10-20% And the maximum sediment is in the slope of 70-100% And in the wind shelter, the maximum area was on a slope of 30-50% And the highest sediment was determined in the slope of 70-100% . Manuscript profile