Frappart F., Papa Fabrice, Guntner A., Werth S., da Silva J. S., Tomasella J., Seyler Frédérique, Prigent C., Rossow W. B., Calmant Stéphane, Bonnet Marie-Paule. (2011). Satellite-based estimates of groundwater storage variations in large drainage basins with extensive floodplains. Remote Sensing of Environment, 115 (6), p. 1588-1594. ISSN 0034-4257.
Titre du document
Satellite-based estimates of groundwater storage variations in large drainage basins with extensive floodplains
Frappart F., Papa Fabrice, Guntner A., Werth S., da Silva J. S., Tomasella J., Seyler Frédérique, Prigent C., Rossow W. B., Calmant Stéphane, Bonnet Marie-Paule
Source
Remote Sensing of Environment, 2011,
115 (6), p. 1588-1594 ISSN 0034-4257
This study presents monthly estimates of groundwater anomalies in a large river basin dominated by extensive floodplains, the Negro River Basin, based on the synergistic analysis using multisatellite observations and hydrological models. For the period 2003-2004, changes in water stored in the aquifer is isolated from the total water storage measured by GRACE by removing contributions of both the surface reservoir, derived from satellite imagery and radar altimetry, and the root zone reservoir simulated by WGHM and LaD hydrological models. The groundwater anomalies show a realistic spatial pattern compared with the hydrogeological map of the basin, and similar temporal variations to local in situ groundwater observations and altimetry-derived level height measurements. Results highlight the potential of combining multiple satellite techniques with hydrological modeling to estimate the evolution of groundwater storage.
