Title :
Freeze/thaw classification for prairie soils using SSM/I radiobrightnesses
Author :
Judge, Jasmeet ; Galantowicz, J.F. ; England, A.W. ; Dahl, P.
Author_Institution :
Radiat. Lab., Michigan Univ., Ann Arbor, MI, USA
Abstract :
The state of soil moisture is an important variable in land surface processes. Moist soils can be classified as frozen or thawed using SSM/I radiobrightness signatures. Though the lowest frequency of SSM/I, 19.35 GHz, is above the Debye relaxation frequency of liquid water, the spectral gradient remains sensitive to the state of soil moisture. Frozen soil was classified as such by a negative 19.35 to 37 GHz or 19.35 to 85 GHz spectral gradient and a low 37 GHz radiobrightness
Keywords :
geophysical techniques; hydrological techniques; ice; microwave measurement; millimetre wave measurement; radiometry; remote sensing; soil; 19.35 to 85 GHz; Debye relaxation frequency; EHF; SHF; SSM/I radiobrightness; USA; Unites States; freeze/ haw classification; frozen soil; ice; measurement technique; microwave radiometry; millimetric radiometry; mm wave; prairie; satellite remote sensing; soil moisture; terrain mapping; thaw state; Atmosphere; Atmospheric measurements; Brightness; Electromagnetic wave absorption; Moisture; Radiometry; Rough surfaces; Scattering; Soil; Surface roughness;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1996. IGARSS '96. 'Remote Sensing for a Sustainable Future.', International
Conference_Location :
Lincoln, NE
Print_ISBN :
0-7803-3068-4
DOI :
10.1109/IGARSS.1996.516958
