lunes, 28 de mayo de 2012
Correlation of aeolian sediment transport measured by sand traps and fluorescent tracers
I post an interesting paper where two different methods, fluorescent tracers and vertical sand traps, were simultaneously used to carry out an aeolian sediment transport flux designed to test the goodness of fluorescent tracers in aeolian environments. Field experiments were performed in a nebkha field close to Famara beach at Lanzarote island (Canary Islands, Spain) in a sector where the dunes were between 0.5 and 0.8 m height and 1-2 m wide and the vegetal cover was approximately 22%. In this dune field the sedimentary supply comes from Famara beach and is blown by trade winds toward the south, where the vegetation acts as natural sediment traps. Wind data were obtained by means of four Aanderaa wind speed sensors ans one Aanderaa vane, all them distributed in a vertical array from 0.1 to 4 m height for 27 h. The average velocity at 1 m height during the experiment was 5.26 m/s with the wind direction from the north.
Cabrera, L., Alonso, I. (2010). Correlation of aeolian sediment transport measured by sand traps and fluorescent tracers. Journal of Marine Systems, 80: 235-242.
Miquel Mir Gual