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Fig. 9.31 Comparative analysis of results received by means of RIMS (solid curve), microwave
monitoring (dashed curve) and in-situ measurements (dislocation of sites where measurements
were carried out
flying
laboratory Miramap on August 2, 2007 near village Nikolovo (Bulgaria) one day later the rich
rainfall (Soldatov 2011)
is marked by symbol
. Measurements were realized by means of
fl
vegetation. The VHF-band image clearly demonstrates no effect of canopy on
signal returns for grass and bushes.
Calculation of the hydrological characteristics of agricultural
fields based on data
of microwave monitoring as input information for the RIMS gives possibility to
increase the crops and to control the quality of soil resources. As Krapivin and
Shutko (2012) repot, some experimental investigations of the RIMS were realized
during spring of 2007 on the Bulgarian territory using Miramap
flying laboratory
equipped by microwave radiometers (Fig. 2.7 ). Some results are given in Figs. 2.14 ,
2.15 , 9.31 and 9.32 . The RIMS input information was quantized topographic maps
fl
Fig. 9.32 Microwave assessments of surface soil moisture in dry (a) and wet (b) conditions.
colors chosen correspond to the following gradations of soil moisture in upper 0 - 5 cm thick layer.
measurements were carried out on July 31, 2007 (a) and on August 2, 2007 (b) in Rusenski Lom
River region (Bulgaria). Dark blue sites correspond to the soil moisture content of 0.2
0.3 g/cm 3
-
or to open water
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