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Amazon River discharge estimated from TOPEX/Poseidon altimetry

Abstract : This paper presents an application of the TOPEX/Poseidon (T/P)) satellite altimetry data to estimate river discharge at three sites along the Amazon River. We discuss the methodology to establish empirical relationships between satellite-derived water levels and daily estimations of river discharges based on rating Curves and in situ level measurements at gauging stations. Three sites are chosen: Martacapuru (Rivet- Solimoes), Jatuarana (nearby the confluence of the Solimoes and Rio Negro rivers) and Obidos (Amazon River). We then reconstruct the satellite-based river discharge over a 10-year time span (1992-2002). Comparison between satellite-derived and river discharge at the gauging stations shows that the T/P data can successfully be used for hydrological studies of large rivers, in providing in particular discharge estimates when in Situ data are not available.
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Submitted on : Monday, July 6, 2009 - 5:27:39 PM
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  • HAL Id : hal-00402154, version 1



E. A. Zakharova, A. V. Kouraev, A. Cazenave, F. Seyler. Amazon River discharge estimated from TOPEX/Poseidon altimetry. Comptes Rendus Géoscience, Elsevier Masson, 2006, 338 (3), pp.188-196. ⟨hal-00402154⟩



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