Results 41 to 50 of about 937 (213)
Numerical data for "Force distribution within a barchan dune"
, 2020 This dataset contains information from numerical simulations on the distribution of forces within a subaqueous barchan dune. The files contain information of the contact forces between two particles (in contact force 0.5 s folder), and the resultant ...
Alvarez, C
core +2 more sources
Diachronic analysis to detect and monitor Barchan dune migration in Ain Salah (Algeria)
Geoadria, 2022 The aim of this work is to analyze deposit patterns and their effect on urban and agricultural areas in the Ain Salah region in southern Algeria. A supervised classification of Landsat images over a 13-year period (2005, 2009, 2013, and 2017) was applied
Abdelhafid Bouzekri
doaj +1 more source
Remote Sensing, 2019 A barchan dune near Tarfaya in Morocco has been surveyed using ground-penetrating radar (GPR) revealing packages of dipping strata within the dune that are truncated by bounding surfaces. The bounding surfaces dip in the downwind direction, truncate sets
Charles S. Bristow
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Migration and Morphology of Asymmetric Barchans in the Central Hexi Corridor of Northwest China
Geosciences, 2018 Crescent-shaped barchan dunes often display an asymmetric shape, with one limb longer than the other. As shown in previous studies, asymmetric bimodal winds constitute one major cause of barchan asymmetry, but the heterogeneous conditions of sand ...
Zhengcai Zhang +3 more
doaj +1 more source
Size distribution and structure of Barchan dune fields [PDF]
Nonlinear Processes in Geophysics, 2011 Barchans are isolated mobile dunes often organized in large dune fields. Dune fields seem to present a characteristic dune size and spacing, which suggests a cooperative behavior based on dune interaction. In Duran et al.
O. Durán +3 more
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Tikrit Journal of Pure Science, 2023 Study of three Barchan sand dunes in Na'ama area southeast Tikrit city have been carried out for (10) samples, the investigation included petrographical, mineralogical and geochemical aspects of the sand dunes from grain size point, the sand grains are ...
Yaseen S. K. Al-Jwaini
doaj +1 more source
DETECTION OF CRESCENT SAND DUNES CONTOURS IN SATELLITE IMAGES USING AN ACTIVE SHAPE MODEL WITH A CASCADE CLASSIFIER [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 Crescent sand dunes called barchans are the fastest moving sand dunes in the desert, causing disturbance for infrastructure and threatening human settlements.
M. A. Azzaoui +4 more
doaj +1 more source
European Journal of Lipid Science and Technology, Volume 128, Issue 6, June 2026.The conjugation of carbohydrates to a phospholipid backbone can be catalyzed via a transphosphatidylation reaction with phospholipase D (PLD). The illustration highlights the conjugation sites identified in this study for three common monosaccharides: glucose, fructose, and xylose.
Nikolina Barchan +2 more
wiley +1 more source
Classifying barchan outlines into morphological classes using convolutional neural networks : a proof of concept [PDF]
, 2022 Thesis (PhD (Geography))--University of Pretoria, 2022.Remotely sensed imagery is a valuable source of data for studying barchan morphology. However, manual methods of data extraction constrain both the spatial and temporal resolution of studies because ...
core +1 more source
DETECTION OF BARCHAN DUNES IN HIGH RESOLUTION SATELLITE IMAGES [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 Barchan dunes are the fastest moving sand dunes in the desert. We developed a process to detect barchans dunes on High resolution satellite images. It consisted of three steps, we first enhanced the image using histogram equalization and noise reduction ...
M. A. Azzaoui +4 more
doaj +1 more source