On simple methods for unsaturated soil hydraulic conductivity determination

  • Bacchi O
  • Reichardt K
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Abstract

The simple methods of LIBARDI et al. (1980) and SISSON et al. (1980) for K(theta) estimation, although developed on completely different theoretical basis, are rigorously identical for the exponential hydraulic conductivity model. The unit gradient approximation used in these methods seems valid for practical purposes but is theoretically in valid.Os métodos simplicados de LIBARDI et al (1980) e de SISSON et al (1980), para determinação da função K(teta), apesar de serem desenvolvidos sobre bases teóricas completamente diferentes, são rigorosamente iguais para o modelo exponencial de condutividade hidráulica. A hipótese do gradiente unitário utilizada nestes métodos parece ser válida apenas para efeito prático, mas não o sendo teoricamente.

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Bacchi, O. O. S., & Reichardt, K. (1993). On simple methods for unsaturated soil hydraulic conductivity determination. Scientia Agricola, 50(2), 326–328. https://doi.org/10.1590/s0103-90161993000200022

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