Estimating Flow Resistance of Wetlands Using SAR Images and Interaction Models

Remote Sensing

Mercedes Salvia²  Mariano Franco¹  Francisco Grings²  Pablo Perna²  Roman Martino³  Haydee Karszenbaum² 

[1] Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales (FCEyN), Dpto. de Física, Ciudad Universitaria, Pab. I, 1428 Buenos Aires, Argentina; E-Mail:;Instituto de Astronomía y Física del Espacio (IAFE), Ciudad Universitaria, 1428 Buenos Aires, Argentina; E-Mails:;Universidad de Buenos Aires, Facultad de Ingeniería (FIUBA), Grupo de Medios Porosos, Av. Paseo Colón 850, C1063ACV, Buenos Aires, Argentina; E-Mail:

关键词: wetland management;    marsh hydraulic conductivity;    Synthetic Aperture Radar (SAR);    microwave interaction model;   

DOI  :  10.3390/rs1040992

来源: mdpi

【 摘 要 】

The inability to monitor wetland drag coefficients at a regional scale is rooted in the difficulty to determine vegetation structure from remote sensing data. Based on the fact that the backscattering coefficient is sensitive to marsh vegetation structure, this paper presents a methodology to estimate the drag coefficient from a combination of SAR images, interaction models and ancillary data. We use as test case a severe fire event occurred in the Paraná River Delta (Argentina) at the beginning of 2008, when 10% of the herbaceous vegetation was burned up. A map of the reduction of the wetland drag coefficient is presented.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.