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Estimating erosion rates of tropical shorelines from Radarsat-1 / Vern Singhroy (01/09/1998)  

Public contenu dans ISPRS Commission 7 Symposium Resource and environmental monitoring 1996-2000 / Gabor Remetey-Fulopp (1998)   Titre : Estimating erosion rates of tropical shorelines from Radarsat-1 Type de document : Article/Communication Auteurs : Vern Singhroy, Auteur ; Marx Barbosa, Auteur Editeur : International Society for Photogrammetry and Remote Sensing ISPRS Année de publication : 01/09/1998 Conférence : ISPRS 1998, Commission 7 symposium on Resource and environmental monitoring 01/09/1998 04/09/1998 Budapest Hongrie OA Proceedings archives Importance : pp 174 - 177 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] érosion côtière [Termes IGN] forêt tropicale [Termes IGN] Guyana [Termes IGN] image Radarsat [Termes IGN] littoral [Termes IGN] mangrove [Termes IGN] risque naturel [Termes IGN] zone intertropicale Résumé : (Auteur) On a global scale, shorelines are eroding at an increasing rate. The local shoreline geomorphology and regional differences in coastal processes are fundamental in estimating erosion rates. Our results show that in the permanently cloudy tropical coastal areas of and north east Brazil, RADARSAT S7 image is particularly useful to map areas of erosion, and deposition, as well as the adjacent affected coastal land use. Coastal changes were estimated by comparing recent RADARSAT images with previous topographic maps. In north east Brazil erosion rates on fractured quaternary sediments vary from 0 to 12 meters a year, and on the more resistant sandstone erosion rates vary from 0 to 6 meters a year. In Guyana, low flat areas below sea level, erosion rates vary from 0 to 25 meters a year. In EI Nino year, these estimates are expected to increase. Numéro de notice : C1998-039 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Communication DOI : sans En ligne : https://goobi.tib.eu/viewer/image/1669065049/197/ Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=65763