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ANA Brasília UnB Brasília UFF Niteroí UFRJ Rio de Janeiro

ANA Brasília UnB Brasília UFF Niteroí UFRJ Rio de Janeiro. INAMHI Quito. SENAMHI Lima UNALM Lima. Recent progress in estimating suspended sediment yield variability in the Amazon river. SENAMHI La Paz UMSA La Paz. Jean Loup GUYOT, Naziano FILIZOLA, Alain LARAQUE,

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ANA Brasília UnB Brasília UFF Niteroí UFRJ Rio de Janeiro

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  1. ANA Brasília UnB Brasília UFF Niteroí UFRJ Rio de Janeiro INAMHI Quito SENAMHI Lima UNALM Lima Recent progress in estimating suspended sediment yield variability in the Amazon river SENAMHI La Paz UMSA La Paz Jean Loup GUYOT, Naziano FILIZOLA, Alain LARAQUE, Benoit LE GUENNEC, Eurides de OLIVEIRA, Francis SONDAG, Frédérique SEYLER, Geraldo BOAVENTURA, Gérard COCHONNEAU, Gutemberg SILVA, Jacques CALLEDE, Jean Michel MARTINEZ, João Bosco ALFENAS, Josyane RONCHAIL, Julien NICOD, Laurence MAURICE-BOURGOIN, Marcos RIOS, Marie Paule BONNET, Michel MOLINIER, Pascal FRAIZY, Pascal KOSUTH, Patricia MOREIRA-TURCQ, Patrick SEYLER, Philippe VAUCHEL, Reginaldo LONGUINHOS, Valdemar GUIMARAES

  2. Gauging stations national networks In the Amazon basin

  3. Discharge measurements in Amazonian rivers : Rating curves corrections to estimate discharge

  4. Backwater effects in Amazonian rivers : Rating curves corrections to estimate discharge Meade et al., 1991. Environ. Geol. Water Sci., 18 Filizola. 2003. PhD Toulouse

  5. Backwater effects in Amazonian rivers : Rating curves corrections to estimate discharge Q = f(H), Q = f(H, dH/dt), Q = f(H, dH/dL) Vauchel. 2003. HYDRACCESS On line data : Cochonneau et al. 2004. LBA, Brasilia, Poster

  6. Seasonal suspended sediment variability in the Amazon basin : HiBAm Reference Stations Surface sampling every 10 days Section sampling every 2 – 6 months

  7. Rio Beni - Rurrenabaque (Bolivia)

  8. Rio Amazonas - Óbidos (Brasil)

  9. Seasonal suspended sediment variability in the Amazon basin : QS = f(Q) not valid in many cases

  10. Suspended sediment variability in the large amazonian river sections : Sampling strategy Filizola et al. 2004. Hydrological Sciences Journal, 49

  11. Suspended sediment variability in the large Amazonian river sections Suspended sediment vertical distribution is a function of discharge Filizola et al. 2004. Hydrological Sciences Journal, 49

  12. Suspended sediment variability in the large Amazonian river sections Filizola et al. 2004. Hydrological Sciences Journal, 49 The maximum suspended sediment yield is not located near the bottom river

  13. Suspended sediment variability in the large amazonian river sections : calculating yields from on-line WHYBAM database using MESAD QSAr = Q *  [MES]i / n* C QSVe =  Ai * Vi * [MES]i * C QSIn =  qc * [MES]cel * C with [MES]i = f(dB)i Cochonneau. 2004. MESAD

  14. Seasonal suspended sediment yield variability : calculating total suspended sediment from decadal surface sampling and section exploration using HYDRACCESS 1995 – 2003 period : 760 106 t/yr

  15. Seasonal suspended sediment yield variability : Perspectives 1. using MODIS data for monitoring surface suspended sediment Martinez et al. 2004. LBA, Brasilia 2. using 1D hydrodynamic model to estimate total suspended sediment transport Le Guennec et al. 2004. LBA, Brasilia

  16. Sediment budget in the Amazonian floodplain Várzea de Curuaí ? ? Laguna Granja Large scale hydrological budget : 3 to 6 mm/yr (Filizola et al., 2004. LBA Brasilia) Hydrodynamic model on the Varzea de Curuai : 0.6 mm/yr (Maurice-Bourgoin et al., 2004. LBA Brasilia) Pb210 sedimentation rates in the Varzea de Curuai : 5 to 10 mm/yr (Moreira-Turcq et al., 2004. Palaeogeography, Palaeoclimatology, Palaeoecology)

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