<abstract xmlns="http://www.w3.org/1999/xhtml">
        
        <p> Climatic and meteorological conditions may limit the aeolian transport within barchans. An explanation of that issue was the main goal of the investigation held in Western Sahara dune fields located around Tarfaya and Laâyoune. Particular attention was paid to the factors causing the moisture content rising of the sand dune surface layer, which could influence the wind threshold shear velocity in the aeolian transport. The wetted surface layer of sand, when receiving moisture from precipitation or suspensions, reduces the aeolian transport, even in case of wind velocity above 4-5 m s<sup>-1</sup>. Fog and dew condensation does not affect the moisture of deeper sand layers, what occurs after rainfall.</p>
      </abstract>

Climatic and meteorological conditions may limit the aeolian transport within barchans. An explanation of that issue was the main goal of the investigation held in Western Sahara dune fields located around Tarfaya and Laâyoune. Particular attention was paid to the factors causing the moisture content rising of the sand dune surface layer, which could influence the wind threshold shear velocity in the aeolian transport. The wetted surface layer of sand, when receiving moisture from precipitation or suspensions, reduces the aeolian transport, even in case of wind velocity above 4-5 m s-1. Fog and dew condensation does not affect the moisture of deeper sand layers, what occurs after rainfall.

The Sources of Moisture in the Sand Dunes – The Example of the Western Sahara Dune Field

Faculty of Geography and Regional Studies, University of Warsaw, Poland

Quaestiones Geographicae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Climatic and meteorological conditions may limit the aeolian transport within barchans. An explanation of that issue was the main goal of the investigation...

The Sources of Moisture in the Sand Dunes – The Example of the Western Sahara Dune Field

Publié en ligne: 19 sept. 2014

Pages: 199 - 204

Reçu: 30 mai 2014

DOI: https://doi.org/10.2478/quageo-2014-0042

Mots clés
moisture, dune, Western Sahara

© Faculty of Geographical and Geological Sciences, Adam Mickiewicz University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The Sources of Moisture in the Sand Dunes – The Example of the Western Sahara Dune Field

Publié en ligne: 19 sept. 2014

Pages: 199 - 204

Reçu: 30 mai 2014

DOI: https://doi.org/10.2478/quageo-2014-0042

Mots clésmoisture, dune, Western Sahara

© Faculty of Geographical and Geological Sciences, Adam Mickiewicz University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
moisture, dune, Western Sahara