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Mathematical and statistical modeling of morphometric and planar parameters of barchans in Pashoeyeh Erg in the west of Lut Desert,Iran

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Journal of Arid Land 2021年第8期13卷 801-813页

作者： hossein ghazanfarpour Mohsen POURKHOSRAVANI Sayed H MOUSAVI Ali MEHRABI Department of Geography and Urban Planning Shahid Bahonar University of KermanKerman ***Iran Department of Geography and Ecotourism Faculty of Natural Resources and GeosciencesUniversity of KashanKashan ***Iran

Barchan dunes are among the most common accumulative phenomena made by wind erosion,which are usually formed in regions where the prevailing wind direction is almost constant throughout the year and there is not enough sand to completely cover the land *** are among the most common windy landscapes in Pashoueyeh Erg in the west of Lut Desert,*** study aims to elaborate on morphological properties of barchans in this region using mathematical and statistical *** results of these methods are very important in investigating barchan shapes and identifying their *** shapes were mathematically modeled by simulating them in the coordinate system through nonlinear parabolic equations,so that two separate equations were calculated for barchan windward and slip-face *** type and intensity of relationships between barchan morphology and mathematical parameters were determined by the statistical *** results indicated that the existing relationships followed the power correlation with the maximum coefficient of determination and minimum error of *** the above two methods is a powerful basis for stimulating barchans in virtual and laboratory *** most important result of this study is to convert the mathematical and statistical models of barchan morphology to each *** length is one of the most important parameters of barchan parabolas,suggesting different states of barchans in comparison with each *** the barchan's focal length decreases,its opening becomes narrower,and the divergence of the barchan's horns *** with longer focal length have greater width,dimensions,and *** general,identifying and estimating the morphometric and planar parameters of barchans is effective in how they move,how much they move,and how they behave in the *** cases play an important role in the management of desert areas.

关键词： barchan dunes desert parabolic equations statistical model wind erosion Pashoueyeh Erg Lut Desert

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