Results 161 to 170 of about 1,253 (211)
Morphodynamics of Barchan-Barchan Interactions Investigated at the Grain Scale [PDF]
Journal of Geophysical Research F: Earth Surface, 2021 Abstract Corridors of size‐selected crescent‐shaped dunes, known as barchans, are commonly found in water, air, and other planetary environments. The growth of barchans results from the interplay between a fluid flow and a granular bed, but their size regulation involves intricate exchanges between different ...
Willian R Assis, Erick M Franklin
exaly +3 more sources
Barchan-Barchan Dune Repulsion Investigated at the Grain Scale
Journal of Geophysical Research F: Earth SurfaceAbstractBarchans are eolian dunes of crescent shape found on Earth, Mars and other celestial bodies. Among the different types of barchan‐barchan interaction, there is one, known as chasing, in which the dunes remain close but without touching each other.
Nicolao C Lima +2 more
exaly +3 more sources
An Application of CNN to Classify Barchan Dunes Into Asymmetry Classes [PDF]
Aeolian Research, 2022 Barchan morphometric data have been used as proxies of meteorological and topographical data in environments where this data is lacking (such as other planetary bodies), gaining insights into barchan dune field dynamics such as barchan collision and ...
Serena Coetzee +2 more
exaly +2 more sources
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.
Chris H Hugenholtz, Thomas E Barchyn
exaly +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Global Barchans: A Distributional Analysis
Aeolian Research, 2020Abstract Analysis of Google Earth imagery shows that barchans have an uneven global distribution. Nevertheless, they are widespread, and found in many of the world’s deserts, as well as from some moist coastal areas. Most barchans occur in 11 main provinces, and some of these are great in extent and contain large numbers of individual dunes.
Andrew Goudie
exaly +2 more sources
A Comprehensive Picture for Binary Interactions of Subaqueous Barchans [PDF]
Geophysical Research Letters, 2020 Abstract We investigate experimentally the short‐range interactions occurring between two subaqueous barchans. The experiments were conducted in a water channel of transparent material where controlled grains were poured inside, and a camera placed on the top acquired images of the bedforms.
Willian R Assis, Erick M Franklin
exaly +3 more sources
Barchans of Minqin: Morphometry
Geomorphology, 2007The barchans on the border of Minqin oasis, China, were surveyed. Our data reconfirmed that the height of slipface is proportional to the width of horns and the baseline can be roughly described by parts of an ellipse and a parabola. We attempted to study dune geomorphology using the theory of differential geometry.
Zhen-Ting Wang +3 more
openaire +1 more source
Journal of Arid Environments, 1993
Abstract Sand dunes represent the most significant landform on the surface of Qatar Peninsula. In this study: field survey and laboratory work were undertaken; topographic maps, aerial photographs and satellite images were interpreted, to describe Qatar dunes both qualitatively and quantitatively.
N.S. Embabi, M.M. Ashour
openaire +1 more source
Abstract Sand dunes represent the most significant landform on the surface of Qatar Peninsula. In this study: field survey and laboratory work were undertaken; topographic maps, aerial photographs and satellite images were interpreted, to describe Qatar dunes both qualitatively and quantitatively.
N.S. Embabi, M.M. Ashour
openaire +1 more source
Barchan-barchan and barchan-obstacle interactions: insights from grain-scale studies
Sand dunes are bedforms that grow due to the action of a fluid flow over a sand bed or pile. Whenever the fluid flow is mainly in one direction and the availability of sand is limited, crescent-shaped dunes known as barchans appear. These dunes are a strong attractor, being found on Earth, Mars, and other celestial bodies, usually in dune fields where ...Franklin, Erick de Moraes +3 more
openaire +1 more source
Bidirectional Winds, Barchan Dune Asymmetry and Formation of Seif Dunes From Barchans: A Discussion
Environmental Earth Sciences, 2016Barchan dunes—which have a crescent shape with two horns pointing downwind—may undergo a transition to a longitudinal (seif) dune under a bimodal wind regime. Understanding the barchan–seif dune transition is important for the research of dune field evolution and for the investigation of planetary climate and wind regimes. Two models have been proposed
Haim Tsoar, Eric J. Parteli
exaly +2 more sources