Results 11 to 20 of about 1,738,277 (218)
Evidence of Secondary Bedform Controls on River Dune Migration
Geophysical Research LettersIn rivers worldwide, multiple scales of dunes coexist. It is unknown how the larger, primary dunes interact with secondary bedforms that are superimposed.
J. Y. Zomer, A. J. F. Hoitink
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An analytical model for the growth and migration of a transverse dune
The European Physical Journal E, 2019 The growth and migration speed formulae for a 2-d transverse dune are derived under the assumptions of shape similarity, the near surface airflow independent of height, and the 100% sand trapping efficiency of lee face during dune evolution. Although very simple, this analytical model can quantificationally reflect the field investigations of barchan ...
Wen-Xiao, Ning +2 more
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3D airflow modelling and dune migration patterns in an arid coastal dune field
Journal of Coastal Research, 2013 0 ...
Jackson, Derek W.T. +3 more
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Ecological studies of isopoda and diplopoda in dune grassland [PDF]
, 1978 Distribution, population dynamics, biomass and population production of macrodecomposers have been studied in order to clarify the role of four species in the processes of energy transfer in a dune grassland ecosystem.
Davis, Robert Clive
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Strong-wind events control barchan dune migration
Communications Earth & EnvironmentWind is the most important external force in shaping aeolian landforms. Yet, it remains unclear what role the strong-wind events will play in the development of aeolian landforms compared with the effect of regular winds.
Hongjing Ren +5 more
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Observation of density segregation inside migrating dunes [PDF]
Physical Review E, 2011 Spatiotemporal patterns in nature, such as ripples or dunes, formed by a fluid streaming over a sandy surface show complex behavior despite their simple forms. Below the surface, the granular structure of the sand particles is subject to self-organization processes, exhibiting such phenomena as reverse grading when larger particles are found on top of ...
Groh, Christopher +2 more
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Dynamics of migrating sand dunes interacting with obstacles [PDF]
Physical Review Fluids, 2021 Wind- and water-driven migrating sand dunes frequently interact with elevated natural and artificial topographical features. The dune-obstacle interaction can alter the migrating behavior of the dune and, depending on the nature of the obstacle, it may generate various societal and technological risks.
Karol A. Bacik +4 more
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The role of long-term landscape photography as a tool in dune management [PDF]
, 2009 Attitudes to maintaining dune diversity are changing under the realization that existing dune stabilization techniques are fixing dune landscapes, causing ‘coastal squeeze’ and loss of habitat as shorelines retreat.
Worsley, Annie T. +7 more
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Sand dunes as migrating strings
Physical Review E, 2013 We develop a reduced complexity model for three-dimensional sand dunes, based on a simplified description of the longitudinal and lateral sand transport. The spatiotemporal evolution of a dune migrating over a nonerodible bed under unidirectional wind is reduced to the dynamics of its crest line, providing a simple framework for the investigation of ...
Guignier, Lucie +4 more
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International Journal of Digital Earth, 2020 Quantifying the kinematic evolution patterns of dune migration plays a major role in resisting the sand-dust disasters and evaluating the desertification process. With the increment of optical observations, measuring the dune migration with dense spatial
Chao Ding +3 more
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