HR: 0800h
AN: H31D-01    [Abstracts]
TI: Multi Satellite Radar Altimetry for the Study of Hydrological Cycle Within the Rio Negro Floodplains (Brazilian Amazon)
AU: * Silva, J S
EM: silva@lmtg.obs-mip.fr
AF: Universidade Federal do Rio de Janeiro UFRJ COPPE PEC, Cidade Universitaria Centro de Tecnologia Bloco B Sala B101, Rio de Janeiro, RJ 21941972, Brazil
AU: * Silva, J S
EM: silva@lmtg.obs-mip.fr
AF: Laboratoire dEtudes en Geophysique et Oceanographie Spatiales LEGOS UMR5566 UR065 CNES CNRS IRD UPS, Observatoire Midi-Pyrenees 14 avenue Edouard Belin, Toulouse, 31400, France
AU: Roux, E
EM: emmanuel.roux@lmtg.obs-mip.fr 1
AF: Laboratoire des Mecanismes et Transferts en Geologie LMTG UMR5563 UR154 CNRS IRD UPS, Observatoire Midi-Pyrenees 14 avenue Edouard Belin, Toulouse, 31400, France
AU: Calmant, S
EM: stephane.calmant@ird.fr
AF: Laboratoire dEtudes en Geophysique et Oceanographie Spatiales LEGOS UMR5566 UR065 CNES CNRS IRD UPS, Observatoire Midi-Pyrenees 14 avenue Edouard Belin, Toulouse, 31400, France
AU: Seyler, F
EM: frederique.seyler@ird.fr
AF: Laboratoire des Mecanismes et Transferts en Geologie LMTG UMR5563 UR154 CNRS IRD UPS, Observatoire Midi-Pyrenees 14 avenue Edouard Belin, Toulouse, 31400, France
AU: Rotunno, O C
EM: otto@coc.ufrj.br
AF: Universidade Federal do Rio de Janeiro UFRJ COPPE PEC, Cidade Universitaria Centro de Tecnologia Bloco B Sala B101, Rio de Janeiro, RJ 21941972, Brazil
AU: Mansur, W J
EM: webw@coc.ufrj.br
AF: Universidade Federal do Rio de Janeiro UFRJ COPPE PEC, Cidade Universitaria Centro de Tecnologia Bloco B Sala B101, Rio de Janeiro, RJ 21941972, Brazil
AU: Filizola, N P
EM: naziano.filizola@yahoo.com.br
AF: Universidade Federal do Amazonas UFAM, Avenida Gal Rodrigo Otavio Jordao Ramos 3000 Campus Universitario Sala NIEMA, Manaus, AM 69077000, Brazil
AU: Guyot, J
EM: guyot@lmtg.obs-mip.fr
AF: Laboratoire des Mecanismes et Transferts en Geologie LMTG UMR5563 UR154 CNRS IRD UPS, Observatoire Midi-Pyrenees 14 avenue Edouard Belin, Toulouse, 31400, France
AU: Bonnet, M
EM: bonnet@lmtg.obs-mip.fr
AF: Laboratoire des Mecanismes et Transferts en Geologie LMTG UMR5563 UR154 CNRS IRD UPS, Observatoire Midi-Pyrenees 14 avenue Edouard Belin, Toulouse, 31400, France
AB: Frappart et al. (RSE, 2005) studied the floodplain volume variation in the Rio Negro basin, using the sole TOPEX/POSEIDON (T/P) GDR's data. In this study, river main stream and their linked floodplains could not be separated, due to the course effective resolution of these data. We have processed both data of ENVISAT RA2 altimeter, and retracked T/P data. The T/P data have been retracked with three of the ENVISAT trackers (Ocean, Ice1, Ice2). We present results of the comparison between the capability of each sensor and tracker to discriminate small water bodies including river main stream and floodplain. Using an original 3D method for defining virtual stations, we computed time series of water stage for each individual inundated area. This time series evidence the great spatial variability of the hydrological cycle, depending on the connection and the relative location between the main stream and lakes.
DE: 0429 Climate dynamics (1620)
DE: 0439 Ecosystems, structure and dynamics (4815)
DE: 1852 Plant uptake
DE: 1866 Soil moisture
DE: 1890 Wetlands (0497)
SC: Hydrology [H]
MN: 2007 Joint Assembly