Physics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012georl..3905404w&link_type=abstract
Geophysical Research Letters, Volume 39, Issue 5, CiteID L05404
Physics
Global Change: Geomorphology And Weathering (0790, 1824, 1825, 1826, 1886), Atmospheric Processes: Boundary Layer Processes, Atmospheric Processes: Land/Atmosphere Interactions (1218, 1631, 1843, 4301), Atmospheric Processes: Turbulence (4490)
Scientific paper
The turbulent structure of airflow over a barchan sand dune is determined using quadrant analysis of wind velocity data derived from sonic anemometers. Results indicate an increased frequency of ejection and sweep events in the toe region of the dune, characteristic of the turbulent bursting process. In contrast, at the crest there was a significant increase in the occurrence of outward interactions. Combined with high frequency saltation data our analyses show that turbulent structures characterised by a positive streamwise fluctuating velocity (+u′ sweeps at the toe and outward interactions at the crest) have a dominant influence on sand transport on the dune, together accounting for up to 83% and 95% of transporting events at the toe and crest respectively.
Weaver Corinne M.
Wiggs Giles F. S.
No associations
LandOfFree
Turbulent flow structures and aeolian sediment transport over a barchan sand dune does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Turbulent flow structures and aeolian sediment transport over a barchan sand dune, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbulent flow structures and aeolian sediment transport over a barchan sand dune will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1559192