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Floodplain water storage in the Negro river basin estimated from microwave remote sensing of inundation area and water levels / Frédéric Frappart in Remote sensing of environment, vol 99 n° 4 (15/12/2005)

Public [article]  inRemote sensing of environment > vol 99 n° 4 (15/12/2005) . - pp 387 - 399 Titre : Floodplain water storage in the Negro river basin estimated from microwave remote sensing of inundation area and water levels Type de document : Article/Communication Auteurs : Frédéric Frappart, Auteur ; F. Seyler, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 387 - 399 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes descripteurs IGN] altimétrie satellitaire par radar [Termes descripteurs IGN] Amazone (fleuve) [Termes descripteurs IGN] analyse diachronique [Termes descripteurs IGN] bassin hydrographique [Termes descripteurs IGN] données altimétriques [Termes descripteurs IGN] fleuve [Termes descripteurs IGN] image JERS [Termes descripteurs IGN] inondation [Termes descripteurs IGN] niveau de l'eau [Termes descripteurs IGN] plaine [Termes descripteurs IGN] sédimentation [Termes descripteurs IGN] télédétection en hyperfréquence Résumé : (Auteur) The objective of this study is to determine spatio-temporal variations of water volume over inundated areas located in large river basins using combined observations from the Synthetic Aperture Radar (SAR) onboard the Japanese Earth Resources Satellite (JERS-1), the Topex/Poseidon (T P) altimetry satellite, and in-situ hydrographic stations. Ultimately, the goal is to quantify the role of floodplains for partitioning water and ,sediment fluxes over the great fluvial basins of the world. SAR images are used to identify the type of surface (open water, inundated areas, forest) and, hence, the areas covered with water. Both radar altimetry data and in-situ hydrographic measurements yield water level time series. The basin of the Negro River, the tributary which carries the largest discharge to the Amazon River, was selected as a test site. By combining area estimates derived from radar images classification with changes in water level, variations of water volume (focusing on a seasonal cycle) have been obtained. The absence of relationship between water volume and inundated area, reflecting the diverse and widely dispersed floodplains of the basin, is one of the main result of this study. Numéro de notice : A2005-208 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27345 [article]

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