Satellite-based estimates of groundwater storage variations in large drainage basins with extensive floodplains

REMOTE SENSING OF ENVIRONMENT

卷:115

Article

Frappart, Frederic¹  Papa, Fabrice^2,3  Guentner, Andreas⁴  Werth, Susanna⁴  da Silva, Joecila Santos⁵  Tomasella, Javier⁶  Seyler, Frederique⁷  Prigent, Catherine⁸  Rossow, William B.³  Calmant, Stephane²  Bonnet, Marie-Paule¹ 

[1] Univ Toulouse, CNRS, IRD, OMP GET, F-31400 Toulouse, France

[2] Univ Toulouse, CNRS, CNES, OMP LEGOS,IRD, F-31400 Toulouse, France

[3] CUNY City Coll, NOAA CREST, New York, NY USA

[4] GFZ, Potsdam, Germany

[5] Univ Fed Amazonas, LAPA, Manaus, Amazonas, Brazil

[6] INPE Ctr Ciencia Sistema Terr, Cachoeira Paulista, SP, Brazil

[7] US ESPACE, IRD, Montpellier, France

[8] CNRS, Observ Paris, LERMA, Paris, France

关键词: Groundwater;    Remote sensing;    Hydrological modeling;   

DOI  :  10.1016/j.rse.2011.02.003

来源: Elsevier

【 摘 要 】

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. (C) 2011 Elsevier Inc. All rights reserved.

【 授权许可】

Free