DocumentCode :
1850385
Title :
AMSR-E observations of rain and flood events over vegetated areas of LA Plata basin
Author :
Ferrazzoli, P. ; Rahmoune, R. ; Grings, F. ; Douna, V. ; Parmuchi, G. ; Salvia, M. ; Karszenbaum, H.
Author_Institution :
Ing. - DISP, Tor Vergata Univ., Rome, Italy
fYear :
2010
fDate :
1-4 March 2010
Firstpage :
63
Lastpage :
66
Abstract :
This work analyzes AMSR-E signatures collected in two sites of La Plata basin, in South America. Within the wide Chaco forest, an area close to Las Lomitas meteorological station was selected. Here the forest is uniform, but not very dense, with biomass values in the range 70-120 t/ha. After strong rain events, appreciable variations of polarization index at C and X band were observed. As expected, the better dynamic range is obtained at C band. Also AMSR-E signatures collected during a strong flooding event in the Delta of Paraná River were analyzed. Variations of polarization index are strong, as expected. Information about the water level in the river was made available by hydrometric stations. We selected specific pixels characterized by different kinds of land cover: agricultural fields, marshes, and planted forests. A significant correlation between polarization index (at various frequencies) and water level is proved. A flood monitoring algorithm based on AMSR-E brightness temperature difference is tested. Optical and radar data are used as ancillary input for calibration and validation proposes.
Keywords :
floods; hydrological techniques; radiometry; rain; remote sensing; rivers; AMSR-E observations; C band observations; Chaco forest; La Plata basin; Parana River; South America; X band observations; agricultural fields; biomass values; brightness temperature; flood events; flood monitoring algorithm; land cover; microwave remote sensing; optical data; polarization index; radar data; rain events; vegetated areas; water level; Brightness temperature; Floods; Indexes; Monitoring; Rain; Remote sensing; Rivers; forest; hydrology; microwave remote sensing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Radiometry and Remote Sensing of the Environment (MicroRad), 2010 11th Specialist Meeting on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-8120-0
Electronic_ISBN :
978-1-4244-8121-7
Type :
conf
DOI :
10.1109/MICRORAD.2010.5559588
Filename :
5559588
Link To Document :
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