Apports de l’imagerie satellite pour le suivi de l’impact des événements cycloniques à Madagascar
This study focuses on the use of earth observation data for the monitoring of tropical cyclones and their impact in the South-western Indian Ocean. Two recent events that occurred in Madagascar are investigated: (i) Haruna, that hit the south-western coast in February 2013 and (ii) Enawo, that hit t...
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Pôle de Recherche pour l'Organisation et la diffusion de l'Information Géographique
2020-04-01
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| Series: | EchoGéo |
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| Online Access: | https://journals.openedition.org/echogeo/18634 |
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| author | Thibault Catry Christophe Révillion Pascal Mouquet Gwenaëlle Pennober |
| author_facet | Thibault Catry Christophe Révillion Pascal Mouquet Gwenaëlle Pennober |
| author_sort | Thibault Catry |
| collection | DOAJ |
| description | This study focuses on the use of earth observation data for the monitoring of tropical cyclones and their impact in the South-western Indian Ocean. Two recent events that occurred in Madagascar are investigated: (i) Haruna, that hit the south-western coast in February 2013 and (ii) Enawo, that hit the north-eastern coast in March 2017. The results showed that satellite imagery is suitable for the quantification of hurricane-related floods over Madagascar territory. The synergetic use of optical and SAR (Synthetic Aperture Radar) sensors, with high temporal and spatial resolution allowed to : (i) carry out a near-real time monitoring of floods caused by Haruna during the crisis and a characterization of water level subsidence in post-crisis (combining SPOT 5, RADARSAT-2 and Pléiades images), (ii) a mapping of floods related to Enawo in urban areas and in rice fields in the regions of Sambava and Maroantsetra (combining Sentinel-1, Sentinel-2, and participatory mapping). |
| format | Article |
| id | doaj-art-d89aa20932f541afa4807e656afa0127 |
| institution | Kabale University |
| issn | 1963-1197 |
| language | fra |
| publishDate | 2020-04-01 |
| publisher | Pôle de Recherche pour l'Organisation et la diffusion de l'Information Géographique |
| record_format | Article |
| series | EchoGéo |
| spelling | doaj-art-d89aa20932f541afa4807e656afa01272025-01-30T12:45:25ZfraPôle de Recherche pour l'Organisation et la diffusion de l'Information GéographiqueEchoGéo1963-11972020-04-015110.4000/echogeo.18634Apports de l’imagerie satellite pour le suivi de l’impact des événements cycloniques à MadagascarThibault CatryChristophe RévillionPascal MouquetGwenaëlle PennoberThis study focuses on the use of earth observation data for the monitoring of tropical cyclones and their impact in the South-western Indian Ocean. Two recent events that occurred in Madagascar are investigated: (i) Haruna, that hit the south-western coast in February 2013 and (ii) Enawo, that hit the north-eastern coast in March 2017. The results showed that satellite imagery is suitable for the quantification of hurricane-related floods over Madagascar territory. The synergetic use of optical and SAR (Synthetic Aperture Radar) sensors, with high temporal and spatial resolution allowed to : (i) carry out a near-real time monitoring of floods caused by Haruna during the crisis and a characterization of water level subsidence in post-crisis (combining SPOT 5, RADARSAT-2 and Pléiades images), (ii) a mapping of floods related to Enawo in urban areas and in rice fields in the regions of Sambava and Maroantsetra (combining Sentinel-1, Sentinel-2, and participatory mapping).https://journals.openedition.org/echogeo/18634hurricaneMadagascarOptical and SAR remote-sensing |
| spellingShingle | Thibault Catry Christophe Révillion Pascal Mouquet Gwenaëlle Pennober Apports de l’imagerie satellite pour le suivi de l’impact des événements cycloniques à Madagascar EchoGéo hurricane Madagascar Optical and SAR remote-sensing |
| title | Apports de l’imagerie satellite pour le suivi de l’impact des événements cycloniques à Madagascar |
| title_full | Apports de l’imagerie satellite pour le suivi de l’impact des événements cycloniques à Madagascar |
| title_fullStr | Apports de l’imagerie satellite pour le suivi de l’impact des événements cycloniques à Madagascar |
| title_full_unstemmed | Apports de l’imagerie satellite pour le suivi de l’impact des événements cycloniques à Madagascar |
| title_short | Apports de l’imagerie satellite pour le suivi de l’impact des événements cycloniques à Madagascar |
| title_sort | apports de l imagerie satellite pour le suivi de l impact des evenements cycloniques a madagascar |
| topic | hurricane Madagascar Optical and SAR remote-sensing |
| url | https://journals.openedition.org/echogeo/18634 |
| work_keys_str_mv | AT thibaultcatry apportsdelimageriesatellitepourlesuividelimpactdesevenementscycloniquesamadagascar AT christopherevillion apportsdelimageriesatellitepourlesuividelimpactdesevenementscycloniquesamadagascar AT pascalmouquet apportsdelimageriesatellitepourlesuividelimpactdesevenementscycloniquesamadagascar AT gwenaellepennober apportsdelimageriesatellitepourlesuividelimpactdesevenementscycloniquesamadagascar |