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@PHDTHESIS{Qu:202688,
author = {Qu, Wei},
title = {{C}haracterization of soil water content variability at the
catchment scale using sensor network and stochastic
modelling},
volume = {271},
school = {Universität Bonn},
type = {Dr.},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2015-04872},
isbn = {978-3-95806-067-8},
series = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
Umwelt / Energy $\&$ Environment},
pages = {XVI, 123 S.},
year = {2015},
note = {Universität Bonn, Diss., 2015},
abstract = {Wireless sensor network technology has recently been used
for high spatial and temporal resolution soil water content
measurements to facilitate better understanding of
hydrological processes in catchment scale. Its performance
strongly depends on the quality of the sensorsand the number
of sensor nodes. In the first paper, the newly developed
SPADE soil water content sensor was calibrated using a
two-step laboratory-based procedure using dielectric
reference liquids. The sensor accuracy was evaluated in
terms of sensor-to-sensor variability and temperature
effect. Using sensor-specific calibration significantly
improved the estimation of apparent dielectric permittivity
as compared to using a universal calibration function. The
transferability of the temperature correction function from
reference liquids to soils was successful and has been
verified with undisturbed soil samples. A site-specific
petrophysical model (complex refraction index model, CRIM)
was used to convert apparent dielectric permittivity into
soil water content using 15 soil samples from the
Rollesbroichcatchment, with RMSE values of 0.028, 0.025, and
0.022 cm$^{3}$cm$^{-3}$ for 5, 20, and 50 cm, respectively.
[...]},
cin = {IBG-3},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)11 / PUB:(DE-HGF)3},
urn = {urn:nbn:de:0001-2015071631},
url = {https://juser.fz-juelich.de/record/202688},
}