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Hydrodynamic modelling of the Amazon River: Factors of uncertainty

Eduardo Chavarri Alain Crave 1 Marie-Paule Bonnet Abel Mejia Joecila Santos da Silva 2 Jean Loup Guyot
1 GR - Géosciences Rennes
2 CESTUAv - Centro de Estudos do Tropico Umido
Abstract : Hydrodynamic modelling of Amazonian rivers is still a difficult task. Access difficulties reduce the possibilities to acquire sufficient good data for the model calibration and validation. Current satellite radar technology allows measuring the altitude of water levels throughout the Amazon basin. In this study, we explore the potential usefulness of these data for hydrodynamic modelling of the Amazon and Napo Rivers in Peru. Simulations with a 1-D hydrodynamic model show that radar altimetry can constrain properly the calibration and the validation of the model if the river width is larger than 2500 m. However, sensitivity test of the model show that information about geometry of the river channel and about the water velocity are more relevant for hydrodynamic modelling. These two types of data that are still not easily available in the Amazon context.
keyword : Hydrodynamic modelling Amazon River Radar altimetry Model sensitivity
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https://hal-insu.archives-ouvertes.fr/insu-00827367
Contributor : Isabelle Dubigeon Connect in order to contact the contributor
Submitted on : Wednesday, May 29, 2013 - 10:40:45 AM
Last modification on : Tuesday, October 19, 2021 - 10:52:50 PM

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INSU | UNIV-RENNES1 | CNRS | OSUR | GR | GR-DIMENV | UNIV-RENNES

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Eduardo Chavarri, Alain Crave, Marie-Paule Bonnet, Abel Mejia, Joecila Santos da Silva, et al.. Hydrodynamic modelling of the Amazon River: Factors of uncertainty. Journal of South American Earth Sciences, Elsevier, 2013, 44, pp.94-103. ⟨10.1016/j.jsames.2012.10.010⟩. ⟨insu-00827367⟩

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