Title :
Observed effects of soil humus & salt contents on the microwave emissivity of soils
Author :
Bobrov, Pavel P.
Author_Institution :
Omsk State Pedagogical Univ.
Abstract :
Multi-temporal remote sensing techniques have been employed in order to make comparative research of microwave emissivity of soil plots with different salt and humus content. The experiment with radiometers, 6.2 and 8.0 GHz, revealed the changes in radiobrightness temperature hold a direct relationship with changes of soil aggregation after intensive irrigation. The maximum radiobrightness contrast of plots with different humus content came to 60 K and that of salted and non-salted plots - to 30 K. The analysis has shown that there is a good correlation between the diurnal changes of emissivity and the initial moisture (a soil moisture in 2-3 hours after irrigation) of plots. This will make possible to distinguish the plots with different salt and humus content under identical meteorological conditions by the remote sensing method
Keywords :
geophysical techniques; hydrological techniques; radiometry; remote sensing; soil; terrain mapping; 6.2 GHz; 8 GHz; Russia; SHF; Siberia; X-band; diurnal changes; geophysical measurement technique; humus; hydrology; land surface; microwave emissivity; microwave radiometry; organic matter; radiobrightness contrast; radiobrightness temperature; remote sensing; salinity; salt; soil; soil moisture; terrain mapping; Brightness temperature; Dielectric constant; Irrigation; Land surface; Microwave theory and techniques; Radiometers; Remote monitoring; Remote sensing; Soil; Temperature sensors;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.977911
