aerodynamic roughness length related to non-aggregated tillage ridges

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ID: 246090
2005
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Abstract
Wind erosion in agricultural soils is dependent, in part, on the aerodynamic roughness length (z0) produced by tillage ridges. Although previous studies have related z0 to ridge characteristics (ridge height (RH) and spacing (RS)), these relationships have not been tested for tillage ridges observed in the North African agricultural fields. In these regions, due to climate and soil conditions, small plowing tools are largely used. Most of these tools produce non-aggregated and closely-spaced small ridges. Thus, experiments were conducted in a 7-m long wind tunnel to measure z0 for 11 ridge types covering the range of geometric characteristics frequently observed in south Tunisia. Experimental results suggest that RH2/RS is the first order parameter controlling z0. A strong relationship between z0 and RH2/RS is proposed for a wide range of ridge characteristics.
Reference Key
kardous2005annalesaerodynamic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;M. Kardous;G. Bergametti;B. Marticorena
Journal journal of food measurement and characterization
Year 2005
DOI
10.5194/angeo-23-3187-2005
URL
https://www.ann-geophys.net/23/3187/2005/angeo-23-3187-2005.pdf
Keywords
cosmic physics sciencephysicsgeophysics

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