Results 31 to 40 of about 374 (187)

Geomorphology of the Tafilalt Basin, South-East Morocco – implications for fluvial–aeolian dynamics and wind regimes

open access: yesJournal of Maps, 2021
The hyper-arid Taflilat Basin, South-East Morocco, is dominated by two ephemeral fluvial networks and several ergs with various dune forms from barchans to mega dunes. Especially the genesis of the star dunes remains an open research question. Therefore,
Manuel Herzog   +2 more
doaj   +1 more source

Analysis of movement and relationships between morphometric components of sand dunes (barchans) in the south-eastern of Iran

open access: yesActa 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

The shape of barchan dunes [PDF]

open access: yesJournal 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
openaire   +1 more source

Morphologic characteristics of aeolian deposits and erosive winds in Sistan plain [PDF]

open access: yesمدیریت بیابان, 2018
Shifting aeolian dunes damage to infrastructure in Sistan plain.  Accordingly, distribution, morphology and fixed and unfixed status of sand dunes in erosive corridors were surveyed by using satellite images and field investigation.
Hamidreza Abbasi   +3 more
doaj   +1 more source

A Thorough Review of Sand Dunes in Iran and Their Relationship to Certain Climatic Features [PDF]

open access: yesمدیریت بیابان, 2023
IntroductionSand covers around 20% of the world's drylands, and 97% of it is found in the sandy land of the arid region of the earth. Different landforms are created by the wind in these regions. Sand dunes are a landform that is mentioned in arid lands.
Maryam Bagherpour   +3 more
doaj   +1 more source

Dataset for "Barchan dunes cruising dune-size obstacles"

open access: yes, 2023
This is part of the data concerning experiments on barchans interacting with an obstacle. Here, you find images, animated movies and a table for all tests.THIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE.
Righi Assis, W (via Mendeley Data)
core   +4 more sources

Size distribution and structure of Barchan dune fields [PDF]

open access: yesNonlinear Processes in Geophysics, 2011
Barchans are isolated mobile dunes often organized in large dune fields. Dune fields seem to present a characteristic dune size and spacing, which suggests a cooperative behavior based on dune interaction. In Duran et al.
O. Durán   +3 more
doaj   +1 more source

Morphological study of the sand dunes in Zarrin Erg and its adaptation to the regional wind data [PDF]

open access: yesکاوش‌های جغرافیایی مناطق بیابانی, 2020
The purpose of this study is to investigate the morphology of the sand dunes located in Zarin Erg in the northwest of the city of Yazd and its accordance with the wind data provided by the surrounding synoptic stations.
Mohamad Sharifi Paichoon   +2 more
doaj  

Barchan dunes on Pluto? [PDF]

open access: yesEPJ Web of Conferences, 2017
We show that the orientation and morphology of bedforms occurring on top of Pluto’s smooth ice coats are consistent with an aeolian origin under conditions of unidirectional flow. From scaling relations for dune size as a function of attributes of atmosphere and sediments, we find that the average diameter of the granular particles constituting such ...
Parteli Eric J. R., Pöschel Thorsten
openaire   +2 more sources

Fuljis: A Discussion [PDF]

open access: yesDesert
In the late nineteenth century Anne and Wilfrid Blunt described horse-shoe shaped hollows they called fuljis in dunes in the Nafud sandsea of Nejd in Arabia.
Andrew Goudie
doaj   +1 more source

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