Bogning S. auteur aut IRD Frappart F. auteur aut IRD Blarel F. auteur aut IRD Nino Fernando auteur aut IRD Mahé Gil auteur aut IRD Seyler Frédérique auteur aut IRD Braun Jean-Jacques auteur aut IRD Onguéné R. auteur aut IRD Etamé J. auteur aut IRD text bookSection eng text/pdf born digital access Radar altimetry, initially developed to observe the surface topography of the ocean, is now commonly used for the monitoring of inland water bodies. In this study, an altimetry-based gauging network was built in the Ogooué River Basin (ORB), in Gabon, Central Africa. It is composed of altimetry-based virtual stations (VS) under the altimetry tracks of ERS-2/ENVISAT/ SARAL, Cryosat-2, Sentinel-3A and Jason-2/Jason-3. River discharge was estimated from 1995 to 2017 combining water level records from several virtual stations close to Lambaréné gauge station and the rating curve from this station. Very good agreement was found in terms of R (>0.95), RMSE and annual discharge. specialized ALTIMETRIE RADAR NIVEAU DE L'EAU ESTIMATION SURVEILLANCE DEBIT VARIATION ANNUELLE JAUGEAGE COURS D'EAU REJET 1995 2017 GABON 062EVAEAU02 126TELAPP04 9304-9307 Piscataway IEEE 2018 IGARSS.International Geoscience and Remonte Sensing Symposium, 38, Valence (ESP), 2018/07/22-27 https://www.documentation.ird.fr/hor/fdi:010078605 10.1109/IGARSS.2018.8519574 978-1-5386-7150-4 https://www.documentation.ird.fr/hor/fdi:010078605 https://www.documentation.ird.fr/intranet/publi/depot/2020-07-10/010078605.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2020-07-01 2020-07-16 fdi:010078605 fre