The effect of the coarsening of sand surface and grass roots on wind erosion in sands

Wind tunnel tests were performed to clarify the characteristics of progressive coarsening of sand surface with root alignments and its effect on erosion rates. Sand beds with rows of grass roots, composed of dyed coarse sand, 2.00>d>0.84, and fine sand, d<0.84mm, in various ratios, were exp...

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Bibliographic Details
Published inJournal of the Japanese Society of Revegetation Technology Vol. 27; no. 1; pp. 62 - 67
Main Authors Yu, Yi, Okumura, Takenobu, Sueyasu, Katsumi, Takuma, Katsutoshi
Format Journal Article
LanguageJapanese
English
Published JAPANESE SOCIETY OF REVEGETATION TECHNOLOGY 2001
Subjects
Coarse particle residue
Coarsening
Grass roots
Wind erosion
Wind tunnel tests
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Summary:Wind tunnel tests were performed to clarify the characteristics of progressive coarsening of sand surface with root alignments and its effect on erosion rates. Sand beds with rows of grass roots, composed of dyed coarse sand, 2.00>d>0.84, and fine sand, d<0.84mm, in various ratios, were exposed intermittently to wind of 3 kinds of velocities, and were photographed at five minute intervals. The wind erosion rate in grassy sands decreased over the initial time period of about 5 minutes. The analysis of the data on the area ratio of residual coarse sand within the bed verified the phenomena of earlier decrease in the erosion rate.
ISSN:0916-7439
0916-7439
DOI:10.7211/jjsrt.27.62