Frappart Frédéric, Zeiger Pierre, Betbeder Julie, Gond Valéry, Bellot Régis, Baghdadi Nicolas, Blarel Fabien, Darrozes José, Bourrel Luc, Seyler Frédérique.
2021. Automatic detection of inland water bodies along altimetry tracks fusing radar backscattering.
In : IGARSS 2021 - 2021 IEEE International Geoscience and Remote Sensing Symposium Proceedings. IEEE
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Résumé : Radar altimetry is commonly used to derive water levels over inland water bodies. If lakes and rivers are increasingly covered with radar altimetry virtual stations, wetlands and floodplains are still poorly monitored using this technique. In this study, an unsupervised classification of Ku-band radar altimetry backscattering coefficients from ENVISAT and Jason-2 is performed in the Congo Cuvette Centrale. Comparisons performed against a classification map of the study area shows a good agreement between the water and vegetation classes of the two datasets. Based on these results, radar altimetry-derived water levels are automatically derived over the water classes. Comparisons against radar altimetry-based water stages from Hydroweb database exhibits also a good agreement.
Mots-clés libres : Radar altimetry, Wetlands, Congo
Auteurs et affiliations
- Frappart Frédéric, Université de Toulouse (FRA)
- Zeiger Pierre, Université de Toulouse (FRA)
- Betbeder Julie, CIRAD-ES-UPR Forêts et sociétés (FRA)
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Gond Valéry, CIRAD-ES-UPR Forêts et sociétés (FRA)
ORCID: 0000-0002-0080-3140
- Bellot Régis, ENSG (FRA)
- Baghdadi Nicolas, INRAE (FRA)
- Blarel Fabien, Université de Toulouse (FRA)
- Darrozes José, Université de Toulouse (FRA)
- Bourrel Luc, Université de Toulouse (FRA)
- Seyler Frédérique, IRD (FRA)
Source : Cirad-Agritrop (https://agritrop.cirad.fr/600333/)
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