Satellite-based estimates of groundwater storage variations in large drainage basins with extensive floodplains |
| |
| Authors: | Frédéric Frappart Fabrice Papa Andreas Güntner Joecila Santos da Silva Frédérique Seyler William B Rossow Marie-Paule Bonnet |
| |
| Affiliation: | a Université de Toulouse; CNRS; IRD; OMP GET; F-31400 Toulouse, Franceb Université de Toulouse; CNES; CNRS; IRD; OMP LEGOS; F-31400 Toulouse, Francec NOAA-CREST, City College of New York, NY, USAd GFZ, Telegrafenberg, Potsdam, Germanye Universidade Federal do Amazonas, LAPA, Manaus, Brazilf INPE/Centro de Ciência do Sistema Terrestre, Cachoeira Paulista/SP, Brazilg IRD, US ESPACE, Montpellier, Franceh LERMA, Observatoire de Paris, CNRS, Paris, France |
| |
| Abstract: | 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. |
| |
| Keywords: | Groundwater Remote sensing Hydrological modeling |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
