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Estimativas de umidade no solo usando GPR
(Universidade Federal do Pará, 2011) MESQUITA, Marcelo Jorge Luz; LUIZ, José Gouvêa; http://lattes.cnpq.br/8676530374310847
This work aims to analyze the effectiveness of GPR (Ground Penetrating Radar) as a measure of moisture in comparison to the established system TDR (Time Domain Reflectometry) and introduce changes in the calibration equations that allow estimation of the moisture from the wave velocity of the GPR. This work presents the methodologies for collecting and processing the GPR data, aimed at determining the moisture. One of the methods was applied in Cuiarana (Salinópolis - PA) with 400 MHz antenna and compared with data from TDR. The relative permittivity obtained by means of the velocities of the waves of GPR were used to infer the values of moisture from Topp and Roth's equations and thus to compare them to the values obtained with TDR. The data were statistically correlated and analyzed, enabling the establishment of a new calibration equation as a function of relative permittivity and other in terms of the speed of the GPR wave. The study successfully showed the feasibility and limitations of estimating water content with GPR.