Characterization of wind-blown sediment transport with height in a highly mobile dune (SW Spain)
- Resource Type
- Authors
- Navarro, Marina; Muñoz-Perez, J. J.; Román-Sierra, Jorge; Ruiz-Cañavate, A.; Gómez-Pina, G.
- Source
- Recercat: Dipósit de la Recerca de Catalunya
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Geologica Acta; Vol. 13 No. 2 (2015): Selected contributions from the 7th Iberian Conference on Coastal Geomorphology (JGEOLIT2013), Oviedo (Spain); 155
RCUB. Revistas Científicas de la Universidad de Barcelona
instname
Geologica Acta, Vo l . 13, N º 2, June 2015, 155-166 DOI : 10 .1344 / GeologicaActa 2015 . 13.2.6
Geologica Acta; 2015: Vol.: 13 Núm.: 2. Special Issue: Selected contributions from the 7th Iberian Conference on Coastal Geomorphology.; p. 155-166
Recercat. Dipósit de la Recerca de Catalunya
RODIN. Repositorio de Objetos de Docencia e Investigación de la Universidad de Cádiz
Dipòsit Digital de Documents de la UAB
Universitat Autònoma de Barcelona
- Subject
- Sand trap
Aeolian sand transport
Average grain size
Dune mobility
Anemometer
- Language
- ISSN
- 1696-5728
1695-6133
The Valdevaqueros dune is located at one of the windiest points of Europe, where the frequent occurrence of strong easterly winds has generated a highly mobile dune. Several rotating cup anemometers in vertical array and a self-designed vertical sand trap, were placed to retain the drift sands at different heights over the surface in order to determine theoretical and actual sand transport rates in the Valdevaqueros dune system. General results show that 90% of the wind-blown sand is transported within the first 20cm above the dune crest surface. Theoretical transport rates based on different empirical formulae were 0.33 to 0.78 times the in-situ sand transport rate detected, which was 2.08·10-2kgm-1s-1 under moderate wind power (mean speed ranging from 8.4 to 17.9ms-1). Analysis of different statistical grain-size parameters helped to understand sand transport distribution at different heights.