BEHAVIOUR OF SALT DISTRIBUTION IN DRY SOILS

https://doi.org/10.4081/jae.2007.4.21

Authors

  • Angelo Sommella | mikimos@mac.com
  • Alessandro Santini
  • Gerardo Severino
  • Alessandro Comegna

Abstract

The behaviour of soil salinity in dry conditions is investigated by means of analytical tools. We present a closed solution for advective transport, and apply it to two typical real-world scenarios: i) a finite depthdistributed (i.e. Heaviside-type), and ii) an instantaneous top-surface broadcasted (i.e. Dirac-type) saline pulse. Our analytical solution is then incorporated into a stochastic stream tube model to compute the mean salinity profile in a heterogeneous field. An unusual phenomenon of plume contraction is observed when the soil is getting drier and drier (typically at long times during a water redistribution period). It is emphasized that our results are in agreement with previous analytical studies (see e.g. [22,23,24]), and match quite well synthetic as well as real data provided that sandy soils are dealt with.

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Published
2007-12-31
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Section
Original Articles
Keywords:
salinity, soil, analytical solutions, heterogeneity.
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How to Cite
Sommella, A., Santini, A., Severino, G., & Comegna, A. (2007). BEHAVIOUR OF SALT DISTRIBUTION IN DRY SOILS. Journal of Agricultural Engineering, 38(4), 21–24. https://doi.org/10.4081/jae.2007.4.21

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