IAFE   05512
INSTITUTO DE ASTRONOMIA Y FISICA DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Paraná River Delta flood as seen by Aquarius, SMOS, AMSR2 and SAR systems
Autor/es:
SALVIA, MARÍA MERCEDES; GRINGS, FRANCISCO MATIAS; BARRAZA, VERONICA; BRUSCANTINI, CINTIA; PERNA, PABLO; FERRAZZOLI, PAOLO; KARSZENBAUM HAYDEE
Lugar:
Buenos Aires
Reunión:
Encuentro; 8th Aquarius/SACD Science Meeting; 2013
Institución organizadora:
CONAE - NASA
Resumen:
In April-June, 2013, strong rains fell over the upper Paraná Basin. This led to the occurrence of a moderate flood wave that reached the lower Paraná Basin on July, 2013. The objective of this paper is to compare the capabilities of Aquarius, SMOS and AMSR2 data to estimate the fraction of flooded area inside a wetland, in combination with Cosmo Skymed data. The general approach is based on the use of PI from a complete series of passive data for flooded fraction estimation, and the use of Cosmo Skymed data in specific dates for parameter calibration. First, flooded area fraction is evaluated by applying a threshold technique to Cosmo Skymed signatures collected in Huge Region mode. Then, passive signatures of the same day and the fraction of flooded area derived by SAR are used to estimate the polarization difference of the flooded area (PIf) for those dates. Finally, these PIf are used on the complete set of passive data to get flooded area fraction for the whole period. Finally, we compare the capabilities of these passive sensors to detect and monitor floodplain inundation, and we discuss the effect that the different spatial resolutions have for this hydrological application.