@incollection{fdi:010072207, title = {{S}patio-temporal dynamics of the floods in the {G}uayas watershed ({E}cuatorian {P}acific coast) using {ENVISAT} {ASAR} images}, author = {{F}rappart, {F}. and {B}ourrel, {L}uc and {S}alazar, {X}.{R}. and {B}aup, {F}. and {D}arrozes, {J}. and {P}ombosa, {R}.}, editor = {}, language = {{ENG}}, abstract = {{T}he floods are an annual phenomenon on the {P}acific coast of {E}cuador and can become devastating during {E}l {N}ino years, especially in the {G}uayas watershed (32,300 km(2)), the largest drainage basin on the {S}outh {A}merican western side of the {A}ndes. {I}n this study, we used {ENVISAT} {ASAR} {GM} {SAR} images with a spatial resolution of 1 km to map the flooded areas between 2004 and 2008 and study the spatio-temporal dynamics of floods in the {G}uayas {B}asin. {M}aximum of likelihood supervised classification performed on {ASAR} images acquired during four consecutive dry seasons allowed us to identify five classes of land cover consistent with land use map. {F}rom the four wet seasons, we computed standardized anomalies of backscattering coefficient to detect changes between dry and wet season and tested different thresholds to identify flooded areas.}, keywords = {{EQUATEUR} ; {GUAYAS} {BASSIN} {VERSANT}}, booktitle = {2015 {IEEE} international geoscience and remote sensing symposium ({IGARSS}) proceedings}, numero = {}, pages = {2515--2518}, address = {{P}iscataway}, publisher = {{IEEE}}, series = {}, year = {2015}, DOI = {10.1109/{IGARSS}.2015.7326322}, ISBN = {978-1-4799-7929-5}, URL = {https://www.documentation.ird.fr/hor/fdi:010072207}, }