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Sources and routing of the Amazon River Flood Wave

Richey, Jeffrey E. ; Mertes, Leal A. K. ; Dunne, Thomas ; Victoria, Reynaldo L. ; Forsberg, Bruce R. ; Tancredi, Antônio C. N. S. ; Oliveira, Eurides

Global biogeochemical cycles, 1989-09, Vol.3 (3), p.191-204 [Periódico revisado por pares]

Washington, DC: Blackwell Publishing Ltd

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  • Título:
    Sources and routing of the Amazon River Flood Wave
  • Autor: Richey, Jeffrey E. ; Mertes, Leal A. K. ; Dunne, Thomas ; Victoria, Reynaldo L. ; Forsberg, Bruce R. ; Tancredi, Antônio C. N. S. ; Oliveira, Eurides
  • Assuntos: Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Freshwater ; Hydrology ; Hydrology. Hydrogeology
  • É parte de: Global biogeochemical cycles, 1989-09, Vol.3 (3), p.191-204
  • Notas: ark:/67375/WNG-XT2FV6QH-8
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  • Descrição: We describe the sources and routing of the Amazon River flood wave through a 2000‐km reach of the main channel, between São Paulo de Olivença and Obidos, Brazil. The damped hydrograph of the main stem reflects the large drainage basin area, the 3‐month phase lag in peak flows between the north and south draining tributaries due to seasonal differences in precipitation, and the large volume of water stored on the floodplain. We examined several aspects of the valley floor hydrology that are important for biogeochemistry. These include volumes of water storage in the channel and the floodplain and the rates of transfer between these two storage elements at various seasons and in each segment of the valley. We estimate that up to 30% of the water in the main stem is derived from water that has passed through the floodplain. To predict the discharge at any cross section within the study reach, we used the Muskingum formula to predict the hydrograph at downriver cross sections from a known hydrograph at upstream cross‐sections and inputs and outputs along each reach. The model was calibrated using three years of data and was successfully tested against an additional six years of data. With this model it is possible to interpolate discharges for unsampled times and sites.
  • Editor: Washington, DC: Blackwell Publishing Ltd
  • Idioma: Inglês
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