MEASUREMENT OF SOIL WATER CONTENT PROFILE USING GROUND-PENETRATING RADAR

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  • 地中レーダによる地盤の水分動態の非破壊計測方法
  • チチュウ レーダ ニ ヨル ジバン ノ スイブン ドウタイ ノ ヒハカイ ケイソク ホウホウ

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Abstract

The potential of a ground penetrating radar (GPR) for the soil water content and water table determination in a sandy soil were evaluated. It is shown from field experiments that the GPR measurements performed satisfactorily. An artificial sandy soil embankment model was used in a field experiments. The horizontal time domain reflectometry (TDR) probes and observation wells were used to measure soil water content and water table for comparison to the GPR data. A similar trend of water table behavior and values of water contents were measured by TDR, observation wells and GPR methods. GPR system offers a fast and nondestructive way for estimating the soil dielectric constant and may be an interesting tool for low-cost mapping of soil water content and trace the transient behavior of the water table in sandy soils.

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