Estimating of soil salinity by passive microwave observations at C band

Author

Bobrov, Pavel P.

Author_Institution

Omsk State Pedagogical Univ., Russia

Volume

2

fYear

1999

fDate

1999

Firstpage

1105

Abstract

Experimental results of 6.25 GHz radiothermal radiation at sites of salted and non-salted soils (under identical meteorological conditions) are presented. It is shown that the parameters of surface roughness, soil moisture profile and evaporation after intensive short-term irrigation depend on of soil surface layer salinity. This results in a distinction in the emissivity of the salted and non-salted sites for the processes of drying and freezing/thawing. The value of initial brightness contrast and speed of its change depend on the difference in salinity of the test sites

Keywords

evaporation; hydrological techniques; moisture; radiometry; remote sensing; soil; 6.25 GHz; C band; brightness contrast; drying; emissivity; evaporation; freezing; nonsalted soils; passive microwave observations; radiothermal radiation; salted soils; short-term irrigation; soil moisture profile; soil salinity; soil surface layer salinity; surface roughness; thawing; Brightness temperature; Conductivity; Frequency; Hydrology; Irrigation; Radiometers; Rough surfaces; Soil moisture; Surface roughness; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International

Conference_Location

Hamburg

Print_ISBN

0-7803-5207-6

Type

conf

DOI

10.1109/IGARSS.1999.774547

Filename

774547