NEW APPROACH FOR THE ESTIMATION OF SOIL FLOW IN THE SOIL FOR PAMPA BIOMA

Ano: 2018 | Volume: 40 | Número: Especial

Autores: Leugim Corteze Romio, Tamires Zimmer, Débora Regina Roberti, Lidiane Buligon

Palavras-chave: soil heat flow; bioma pampa; surface energy balance

Resumo Inglês:

The study of the thermal properties of the soil and the variables dependent on these properties is of paramount importance for the understanding of the surface energy balance. Among the main variables, there is the heat flux in the soil, especially since it allows the verification of the influences that occur in the biome of a region as temperature variations occur. This work aims to estimate the coefficient of thermal conductivity and, consequently, to obtain the values ​​for the heat flux in the soil. The data used to estimate the parameters were obtained from an experimental site located in the city of Pedras Altas-RS. The simulations were carried out from two equations, the first one defined by the classic (discretized) Heat Conduction Fourier Law and the second by the modification of the first including a coefficient k, called a "modeling error". Based on the obtained results it can be verified that the modified equation presented better results, when compared to the classic solution.

The study of the thermal properties of the soil and the variables dependent on these properties is of paramount importance for the understanding of the surface energy balance. Among the main variables, there is the heat flux in the soil, especially since it allows the verification of the influences that occur in the biome of a region as temperature variations occur. This work aims to estimate the coefficient of thermal conductivity and, consequently, to obtain the values ​​for the heat flux in the soil. The data used to estimate the parameters were obtained from an experimental site located in the city of Pedras Altas-RS. The simulations were carried out from two equations, the first one defined by the classic (discretized) Heat Conduction Fourier Law and the second by the modification of the first including a coefficient k, called a "modeling error". Based on the obtained results it can be verified that the modified equation presented better results, when compared to the classic solution.