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Overcome challenges of the in situ monitoring of essential variables of soil or other porous media (concrete, silos, compost, etc.), such as water content, salinity, and temperature. In situ metrology with the measurement of real soil variables, representativity, limited invasiveness, vertical profiles, a spatial scale from 50 m to several km, a temporal scale from 5 min to years, autonomy, real-time and remote data retrieval, ease of installation, low maintenance, robust, and cost-effective for duplication. The sensor contains all that is necessary in a compact form, reducing its footprint and any perturbation of water flows. Networks of a series of sensors provide spatial mapping and meet multiple applications. View this paper
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