Heated Optical Fiber for Distributed Soil-Moisture Measurements: A Lysimeter Experiment
نویسندگان
چکیده
منابع مشابه
Heated distributed temperature sensing for field scale soil moisture monitoring.
Characterizing both spatial and temporal soil moisture (θ) dynamics at site scales is difficult with existing technologies. To address this shortcoming, we developed a distributed soil moisture sensing system that employs a distributed temperature sensing system to monitor thermal response at 2 m intervals along the length of a buried cable which is subjected to heat pulses. The cable temperatu...
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Surface soil moisture content is highly variable in both space and time. Remote sensing can provide an effective methodology for mapping surface moisture content over large areas but ground based measurements are required to test its reliability and to calibrate retrieval algorithms. Recently, we had the opportunity to design and perform an experiment aimed at jointly acquiring measurements of ...
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Several recent studies have highlighted the potential of Actively Heated Fiber Optics (AHFO) for high resolution soil moisture mapping. In AHFO, the soil moisture can be calculated from the cumulative temperature ( T cum ), the maximum temperature ( T max ), or the soil thermal conductivity determined from the cooling phase after heating ( λ ). This study investigates the performance of the T c...
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ژورنال
عنوان ژورنال: Vadose Zone Journal
سال: 2012
ISSN: 1539-1663
DOI: 10.2136/vzj2011.0199