Publications des scientifiques de l'IRD

Frappart F., Papa Fabrice, Malbeteau Y., Leon J. G., Ramillien G., Prigent C., Seoane L., Seyler Frédérique, Calmant Stéphane. (2015). Surface freshwater storage variations in the Orinoco floodplains using multi-satellite observations. Remote Sensing, 7 (1), p. 89-110. ISSN 2072-4292.

Titre du document
Surface freshwater storage variations in the Orinoco floodplains using multi-satellite observations
Année de publication
2015
Type de document
Article référencé dans le Web of Science WOS:000348401900005
Auteurs
Frappart F., Papa Fabrice, Malbeteau Y., Leon J. G., Ramillien G., Prigent C., Seoane L., Seyler Frédérique, Calmant Stéphane
Source
Remote Sensing, 2015, 7 (1), p. 89-110 ISSN 2072-4292
Variations in surface water extent and storage are poorly characterized from regional to global scales. In this study, a multi-satellite approach is proposed to estimate the water stored in the floodplains of the Orinoco Basin at a monthly time-scale using remotely-sensed observations of surface water from the Global Inundation Extent Multi-Satellite (GIEMS) and stages from Envisat radar altimetry. Surface water storage variations over 2003-2007 exhibit large interannual variability and a strong seasonal signal, peaking during summer, and associated with the flood pulse. The volume of surface water storage in the Orinoco Basin was highly correlated with the river discharge at Ciudad Bolivar (R = 0.95), the closest station to the mouth where discharge was estimated, although discharge lagged one month behind storage. The correlation remained high (R = 0.73) after removing seasonal effects. Mean annual variations in surface water volume represented similar to 170 km(3), contributing to similar to 45% of the Gravity Recovery and Climate Experiment (GRACE)-derived total water storage variations and representing similar to 13% of the total volume of water that flowed out of the Orinoco Basin to the Atlantic Ocean.
Plan de classement
Hydrologie [062] ; Télédétection [126]
Description Géographique
VENEZUELA ; COLOMBIE
Localisation
Fonds IRD [F B010063890]
Identifiant IRD
fdi:010063890
Contact