Results 21 to 30 of about 374 (187)
Transverse Aeolian Ridge Growth Mechanisms and Pattern Evolution in Scandia Cavi, Mars
Frontiers in Earth Science, 2021 In Scandia Cavi on Mars, barchans migrating over a field of transverse aeolian ridges (TARs) leave behind distinctive trails (“wakes”) comprising both TARs undergoing exhumation and coarse-grained ripples being shed from the barchans.
Lori K. Fenton +3 more
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Dune Field Patterns and Their Control Factors in the Middle Areas of China’s Hexi Corridor Desert
Frontiers in Earth Science, 2022 The middle areas of China’s Hexi Corridor Desert are distributed within or at the edge of oases in continental river basins in Northern China. Recently, researchers found that rivers can provide sediment material for dune formation and development, but ...
Yan Zhang, Zhengcai Zhang
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Current diversity of small mammals of the “Sarykum Barkhans” of Dagestan Reserve [PDF]
BIO Web of Conferences, 2021 We studied the species diversity and abundance of small terrestrial mammals in the spring and autumn period of 2016-2019 in four groups of habitats of the protected area “Sarykum barkhans” of the Dagestan Nature Reserve: barkhan, floodplain forest ...
Gudova Marinat +4 more
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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
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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
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IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021 The morphology of isolated barchan dunes on Mars and Earth may shed light on the dynamic conditions that form them, their migration direction and the physical properties of the sediments composing them.
Lior Rubanenko +3 more
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Transformation of parabolic dunes into mobile barchans triggered by environmental change and anthropogenic disturbance [PDF]
, 2018 Parabolic dunes are widely distributed on coasts and margins of deserts and steppes where ecosystems are vulnerable and sensitive to environmental changes and human disturbances. Some studies have indicated that vegetated parabolic dunes can be activated
Baas, Andreas C. W.; id_orcid +5 more
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AIP Advances, 2022 Crescent-shaped dunes, or barchans, usually move in swarms in nature, where their sizes become closer to each other while migrating downstream collectively. A major cause of such a phenomenon is the collision among the dunes.
Nan He +3 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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Birth of a subaqueous barchan dune [PDF]
Physical Review E, 2017 Barchan dunes are crescentic shape dunes with horns pointing downstream. The present paper reports the formation of subaqueous barchan dunes from initially conical heaps in a rectangular channel. Because the most unique feature of a barchan dune is its horns, we associate the timescale for the appearance of horns to the formation of a barchan dune.
Zambrano, Carlos Azael Alvarez +1 more
openaire +3 more sources