Amazon River discharge estimated from TOPEX/Poseidon altimetry |
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| Authors: | Elena A Zakharova Alexei V Kouraev Anny Cazenave Frédérique Seyler |
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| Institution: | 1. Laboratoire d''études en géophysique et océanographie spatiales (LEGOS), 18, av. Édouard-Belin, 31401 Toulouse cedex 4, France;2. State Oceanography Institute, St. Petersburg branch (SPB SOI), St. Petersburg, Russia;3. Laboratoire des mécanismes et transferts en géologie (LMTG), observatoire Midi-Pyrénées, 14, av. Édouard-Belin, 31400 Toulouse, France |
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| 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: Manacapuru (River Solimões), Jatuarana (nearby the confluence of the Solimões and Rio Negro rivers) and Óbidos (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. To cite this article: E.A. Zakharova et al., C. R. Geoscience 338 (2006). |
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| Keywords: | Amazon River River discharge Satellite altimetry TOPEX/Poseidon Amazone Débit Altimétrie satellitaire TOPEX/Poséidon |
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