Research Article
Jun 1980
Profile Soil Moisture from Surface Measurements
Publication: Journal of the Irrigation and Drainage Division
Volume 106, Issue 2
Abstract
A method is presented for predicting the volumetric soil moisture of the soil profile from the surface layer soil moisture measurement and information on the soil properties of the profile under bare soil conditions. This method is based upon soil physics relationships and the assumption of hydraulic potential equilibrium throughout the profile. This procedure was tested using data generated with a soil-moisture-simulation model for a variety of situations involving bare soils. Results indicated that this procedure can be used to predict profile soil moisture within acceptable error bounds under some conditions. However, the surface layer measurements should be made during predawn period. The optimal surface layer thickness inferred from the analyses was about 0.1 m (4 in). These results provide some guidelines for developing remote sensing methods for soil-moisture determination.
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Published In
Journal of the Irrigation and Drainage Division
Volume 106 • Issue 2 • June 1980
Pages: 81 - 92
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Jun 1980
Published online: Feb 11, 2021
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Thomas J. Jackson, AM.ASCE
Hydrologist, USDA-SEA-AR, Hydrology Lab., Plant Physiology Inst., Beltsville, Md.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.