Document Type : Applied Article
Authors
1
Ph.D. Candidate in Geomorphology and Environmental Management, University of Sistan and Baluchestan, Zahedan, Iran
2
Ph. D in Geomorphology, Department of Physical Geography, Faculty of Geography and Environmental Planning, University of Sistan and Baluchestan, Zahedan, Iran
3
Professor in Geomorphology, Department of Physical Geography, Faculty of Geography and Environmental Planning, University of Sistan and Baluchestan, Zahedan, Iran
4
Professor, of Remote Sensing and GIS, Islamic Azad University, Yazd Branch, Iran
10.22059/jhsci.2023.364639.793
Abstract
As active landforms in desert regions, barkhans and other types of sand unevenness have always been affected by the prevailing climatic conditions. By moving to link routes, they cause noticeable dangers. Nosrat Abad-Fahraj link route is in provinces of Sistan & Baluchestan and Kerman. Due to the dry and desert climatic conditions, the main aim of the present study is to investigate the dangers of sandstorms and barkhans displacement in the mentioned route. First, employing Sentinel 2 satellite image (2016-2023) and remote sensing methods, some information about the geographical distribution and geomorphological diversity of the hills on a local scale was obtained. In this regards, four sandhills areas namely, Barkhans, Seif and Silk were analyzed in a certain link path and certain morphological changes. The results of the analysis of the images showing the amount of displacement in these four areas during an eight-year period are as follows: Barchan in region number 1 has displaced about 98 to 100 meters with the direction of south and southeast to north and northeast, in Silk sand unevenness in region 2, brankhes have displaced about 25 to 30 meters from southwest to northeast and annually, Seif hills in region 3 (north of the road) have displaced approximately 244 meters from west and southwest to the east and northeast and are developing towards the link route. In region 4, which is located in the southern part of Rig Yalan, the displacement amount, during the whole studied period, is about 210 meters. But due to the direction of the displacement towards north and northeast, it causes no harm to the route. For content confirmation, the region wind data at 10-meter-level and synoptic station were used.
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