Results 21 to 30 of about 32,835 (209)
Minimal size of a barchan dune [PDF]
Physical Review E, 2007 Barchans are dunes of high mobility which have a crescent shape and propagate under conditions of unidirectional wind. However, sand dunes only appear above a critical size, which scales with the saturation distance of the sand flux [P. Hersen, S. Douady, and B. Andreotti, Phys. Rev. Lett. {\bf{89,}} 264301 (2002); B. Andreotti, P.
Parteli, Eric J. R. +2 more
openaire +8 more sources
Remote Sensing, 2021 La Banya spit, located at the south of the River Ebro Delta, is a sandy formation, developed by annexation of bars forming successive beach ridges, which are oriented and modeled by the eastern and southern waves.
Inmaculada Rodríguez-Santalla +9 more
doaj +1 more source
Frontiers in Earth Science, 2022 Dunes composed of granular materials are present in deserts and other environments, such as subaqueous environments and environments on other planets, with very different time and length scales for their evolution.
Fang Ma, Fang Ma, Ping Lü, Min Cao
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New method for measurement of barchans parameters Case study: Lut desert, Iran [PDF]
Desert, 2017 This research has attempted to measure the parameters of barchan dunes as one of the desert landforms. This has been conducted by a field survey using cartographic techniques. In the field, two barchan dunes have completely been surveyed by total station
M. Maghsoudi +3 more
doaj +1 more source
AUTOMATIC EXTRACTION OF DUNES FROM GOOGLE EARTH IMAGES NEW APPROACH TO STUDY THE DUNES MIGRATION IN THE LAÂYOUNE CITY OF MOROCCO [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 In desert environments, the sandy dune movements are considered as the main threat to the livelihoods and productivity of people living in Laâyoune city, South of Morocco.
D. Dakir +4 more
doaj +1 more source
The shape of barchan dunes [PDF]
Journal of Physics: Condensed Matter, 2005 Barchans are crescent-shaped sand dunes forming in arid regions with unidirectional wind and limited sand supply. We report analytical and numerical results for dune shapes under different environmental conditions as obtained from the so-called 'minimal model' of aeolian sand dunes. The profiles of longitudinal vertical slices (i.e.
Klaus Kroy +2 more
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Global Surface Winds and Aeolian Sediment Pathways on Mars From the Morphology of Barchan Dunes
Geophysical Research Letters, 2023 In the absence of consistent meteorological data on Mars, the morphology of dunes can be employed to study its atmosphere. Specifically, barchan dunes, which form under approximately unimodal winds, are reliable proxies for the dominant wind directions ...
L. Rubanenko +6 more
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Morphometrics of barchan dunes on Mars
, 2021 Global morphometrics of barchan dunes on Mars, as obtained by an artificial neural ...
Lior Rubanenko (6589988)
core +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
Remote Sensing, 2023 Dune migration is one of the main processes in arid lands’ geomorphology and is important for the design of windbreaks and sand fixation projects and for the monitoring of desertification dynamics. We conducted long-term continuous positioning monitoring
Xuegang Xing +3 more
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