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Monitoring flood condition in marshes using EM models and Envisat ASAR observations

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7 Author(s)
F. M. Grings ; Inst. de Astronomia y Fisica del Espacio, Ciudad Univ., Buenos Aires, Argentina ; P. Ferrazzoli ; J. C. Jacobo-Berlles ; H. Karszenbaum
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This paper discusses the contribution of multipolarization radar data in monitoring flooding events in wetland areas of the Delta of the Parana´ River, in Argentina. The discussion is based on the comparison between radiative transfer model simulations and ENVISAT Advanced Synthetic Aperture Radar observations of two types of marshes: junco and cortadera. When these marshes are flooded, the radar response changes significantly. The differences in radar response between the flooded and nonflooded condition can be related to changes in the amount of emerged biomass. Based on this, we propose a vegetation-dependent flooding prediction scheme for two marsh structures: nearly vertical cylinders (junco-like) and randomly oriented discs (cortadera-like).

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IEEE Transactions on Geoscience and Remote Sensing  (Volume:44 ,  Issue: 4 )