Wind-driven rain erosion


Erpul G., Norton L., Gabriels D.

International Workshop on Innovative Soil-Plant Systems for Sustainable Agricultural Practices, İzmir, Türkiye, 3 - 07 Haziran 2002, ss.316-327 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: İzmir
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.316-327
  • Anahtar Kelimeler: wind-driven rain, interrill erosion, rainsplash transport, and overland flow transport, SEDIMENT TRANSPORT CAPACITY, RUNOFF, DEPTH
  • Ankara Üniversitesi Adresli: Evet

Özet

The erosion process involves detachment of soil particles from a soil surface and transport of these particles from their original position. The main agents that loosen, break down, and carry the soil particles are wind and water. Wind and water erosion have been separately studied in detail, and various models have been independently developed to predict the amount of either wind or water erosion. Also, physically based models have been developed to make the dynamic relationships of the erosion agents and processes clear and easy to understand. The objective of sub-process parameterization is to adjust parameters to account for spatial and temporal changes in the models. These efforts provide valuable information on the complex interrelation of parameters or processes and more accurate soil loss model predictions. Interrelations between wind and rain and the effects of wind on detachment and transport processes of interrill rain erosion provide a great opportunity for a given prediction technology to improve the estimation of erosion. Therefore, our study hypothesizes that, in the situations where wind and rain occur at the same time, which is a common phenomenon in erosion events, thin flow-driven sediment transport shows a complementary relationship to wind-driven soil particle transport. When raindrops first impact bare soil and until runoff occurs, the wind-driven transport process operates alone, and net movement of soil particles is caused by wind in its prevailing direction. As soon as runoff starts, the flow-driven processes begin to transport soil particles downslope.