Results 21 to 30 of about 590 (205)
Real barchan dune collisions and ejections [PDF]
Geophysical Research Letters, 2012 From high-resolution satellite imagery of barchan sand dunes, we provide geomorphological evidence of collisions that result in the ejection of a barchan from the wake of another barchan dune.
Barchyn, Thomas E., Hugenholtz, Chris H.
core +3 more sources
Dünen mit Vegetation und Barchan-Dünenfelder
, 2015 Desertification is closely related to aeolian sediment transport, including sand dunes formation, evolution and migration. Sand dunes propagate in huge clusters of thousand of dunes with an internal complex dynamics that determines their size and spatial
Durán, Orencio
core +3 more sources
Role of transverse displacements in the formation of subaqueous barchan dunes [PDF]
Physical Review Letters, 2020 Crescentic shape dunes, known as barchan dunes, are formed by the action of a fluid flow on a granular bed. These bedforms are common in many environments, existing under water or in air, and being formed from grains organized in different initial ...
Alvarez, Carlos A., Franklin, Erick M.
core +5 more sources
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
Vegetation covers change and its impact on Barchan Dune morphology in Parangtritis Coast, Indonesia [PDF]
E3S Web of Conferences, 2020 Barchan dune is a peculiar type of dune that forms in wind corridors at the Inner Zone of Parangtritis Sand Dune. Their existence is increasingly threatened by land-use changes, especially vegetation coverage.
Laksono Agung +4 more
doaj +1 more source
Acta Universitatis Carolinae Geographica, 2022 Morphology of barchan dunes plays a key role in the rate of movement of barchan dunes and accordingly, the areas that are in the path of barchan dunes can be identified.
Mehdi Feyzolahpour +2 more
doaj +1 more source
Revealing the Intricate Dune‐Dune Interactions of Bidisperse Barchans [PDF]
Journal of Geophysical Research: Earth Surface, 2022 Abstract Three dimensional dunes of crescentic shape, called barchans, are commonly found on Earth and other planetary environments. In the great majority of cases, barchans are organized in large fields in which corridors of size‐selected barchans are observed, and where barchan‐barchan interactions play an important role in size ...
Willian Righi Assis +2 more
openaire +2 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
doaj +1 more source
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