Height profile of particle concentration in an aeolian saltating cloud: A wind tunnel investigation by PIV MSD
Attempt is made to define the particle concentration in an aeolian saltating cloud and its variation with height using artificial spherical quartz sand in a wind tunnel. The height profiles of the relative particle concentration in aeolian saltating cloud at three wind velocities were detected by th...
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Published in | Geophysical research letters Vol. 30; no. 19; pp. 2004 - n/a |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
American Geophysical Union
01.10.2003
Blackwell Publishing Ltd |
Subjects | |
Online Access | Get full text |
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Summary: | Attempt is made to define the particle concentration in an aeolian saltating cloud and its variation with height using artificial spherical quartz sand in a wind tunnel. The height profiles of the relative particle concentration in aeolian saltating cloud at three wind velocities were detected by the state of the art PIV (Particle Image Velocimetry) MSD (Mie Scattering Diffusion) technique, and converted to actual concentration based on sand transport rate and the variation with height of velocity of the saltating cloud. The particle concentration was found to decay exponentially with height and to increase with wind velocity. It decayed more rapidly when the wind velocity decreased. The volume/volume concentration in the near‐surface layer was at the order of 10−4. The results obtained by PIV MSD technique were in good agreement with those derived from the sand flux and velocity profiles, the former being about 15% greater than the later. |
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Bibliography: | istex:42DE55CF4C123E57E4D7803920F57D2555A71322 ArticleID:2003GL017915 ark:/67375/WNG-WCCW3VXZ-1 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0094-8276 1944-8007 |
DOI: | 10.1029/2003GL017915 |