Experimental study of blown sand in a vegetated area

Keiko Udo, Satoshi Takewaka

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Wind-tunnel experiments were conducted to investigate the effects of vegetation, in particular beach grass, on blown sand in terms of elevation changes of a mobile sand bed and distributions of mean wind velocity for various vegetation canopies. For flexible vegetation layer displacement amplitude of vegetation leaf sway was also measured. The results indicate that a vegetation canopy with low height, high density, and vegetation flexibility is effective in reducing the sand-transport rate. Within and above a canopy of flexible vegetation, the vibrations of leaves increases the air turbulence, which creates a complex interaction between the mean wind velocity and the air turbulence, and thereby reduces the wind velocity in the vegetation area; consequently, the sand-transport rate decreases.

Original languageEnglish
Pages (from-to)1175-1182
Number of pages8
JournalJournal of Coastal Research
Volume23
Issue number5
DOIs
Publication statusPublished - 2007 Sep 1
Externally publishedYes

Keywords

  • Aeolian sand transport
  • Beach erosion
  • Grass
  • Saltation
  • Wind tunnel

ASJC Scopus subject areas

  • Ecology
  • Water Science and Technology
  • Earth-Surface Processes

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