Calibration of TDR coil probe for the soil moisture measurement
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- Kaihotsu Ichirow
- Professor Emeritus, Hiroshima University
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- Nissen Henrik Hoffman
- Municipality of Aalborg
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- Mordrup Per
- Aalborg University
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- Aida Kentaro
- International Centre for Water Hazard and Risk Management
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- Asanuma Jun
- University of Tsukuba
Bibliographic Information
- Other Title
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- 野外試験用マイクロTDRコイルプローブの校正実験
Abstract
<p>Soil moisture change in the surface thin soil layer (0-5cm depth soil layer) affects remarkably exchange of water and energy in soils-atmosphere continuum and water resources management. Knowing soil moisture in the surface thin soil layer is also important for the high quality validation of the satellite soil moisture measurement. A tiny sensor of coil probe (CP) of time domain reflectometry (TDR) developed in laboratory by Nissen et al.(1998) was slightly improved in sensor length for the field soil moisture measurement in the surface thin soil layer, which was made of brass and enamel wires (45mm in diameter and 40mm in length). Calibration experiments were conducted to obtain the fundamental characteristics of soil moisture measurement and working conditions of CP. The results suggest that CP can measure precisely soil moisture as same as two-rod TDR probe and apply to the field soil moisture measurement in the surface thin soil layer.</p>
Journal
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- Proceeding of Annual Conference
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Proceeding of Annual Conference 35 (0), 187-, 2022
THE JAPAN SOCIETY OF HYDROLOGY AND WATER RESOURCES
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Keywords
Details 詳細情報について
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- CRID
- 1390857445989076864
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Disallowed