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- W2851559933 abstract "Summary Soil bulk density ( ρ b ) and volumetric water content ( θ ) determine the volume fractions of soil solids, water and air, and influence mass and energy transfer in soil. It is desirable to monitor ρ b and θ concurrently and non‐destructively. We present a heat pulse‐based method for simultaneous determination of ρ b and θ from soil thermal properties. The method uses equations that relate ρ b and θ to soil volumetric heat capacity ( C ) and to soil thermal conductivity ( λ ). We developed a three‐step procedure to calculate ρ b and θ from C and λ measured by a heat pulse sensor, with soil texture and specific heat of soil solids known a priori . Laboratory evaluation of soil samples with various textures showed that the three‐step method provided reliable estimates of ρ b and θ at θ values greater than the critical water content ( θ c ) when λ started to respond notably to increases in θ . This method provides a new way to determine ρ b and θ simultaneously with heat pulse sensors. Highlights We developed an approach to determine soil bulk density ( ρ b ) and water content ( θ ) simultaneously with a heat pulse sensor. We estimated ρ b and θ from soil thermal properties based on heat capacity and thermal conductivity models. The new approach provided reliable ρ b and θ values at water contents > θ c , the critical value. At θ < θ c , the approach gave unstable results because soil thermal conductivity was insensitive to ρ b ." @default.
- W2851559933 created "2018-07-19" @default.
- W2851559933 creator A5014256411 @default.
- W2851559933 creator A5066432816 @default.
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- W2851559933 date "2018-07-12" @default.
- W2851559933 modified "2023-10-15" @default.
- W2851559933 title "Simultaneous determination of soil bulk density and water content: a heat pulse‐based method" @default.
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- W2851559933 doi "https://doi.org/10.1111/ejss.12690" @default.
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