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Coupling polarimetric L-Band insar and airborne lidar to characterize the geomorphological deformations in the piton de la fournaise volcano / Essam Heggy (2010)  

Public Titre : Coupling polarimetric L-Band insar and airborne lidar to characterize the geomorphological deformations in the piton de la fournaise volcano Type de document : Article/Communication Auteurs : Essam Heggy, Auteur ; Melanie Sedze, Auteur ; Frédéric Bretar, Auteur ; Stéphane Jacquemoud, Auteur ; Paul A. Rosen, Auteur ; Kozin Wada, Auteur ; Thomas Staudacher, Auteur Editeur : New York : Institute of Electrical and Electronics Engineers IEEE Année de publication : 2010 Conférence : IGARSS 2010, IEEE International Geoscience And Remote Sensing Symposium 25/07/2010 30/07/2010 Honolulu Hawaï - Etats-Unis Proceedings IEEE Importance : pp 1911 - 1913 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications photogrammétriques [Termes IGN] bande L [Termes IGN] déformation de la croute terrestre [Termes IGN] données lidar [Termes IGN] données localisées 3D [Termes IGN] interféromètrie par radar à antenne synthétique [Termes IGN] Piton de la Fournaise (volcan) [Termes IGN] polarimétrie radar Résumé : (auteur) Until recently the coarse resolution of topographic mapping acted as a break on understanding the forces and processes that shape the Earth's surface. However, active surface deformation is an important indicator for the earth crustal dynamics since it is directly linked to earthquakes, volcanic eruptions and landslides. Both airborne laser scanning systems (LiDAR) and spaceborne interferometric synthetic aperture radars (InSAR) have provided valuable information for many case studies requiring highresolution characterization of ground movement in relatively large areas to assess the threat and impact of natural hazards especially for volcanic eruptions. The Piton de la Fournaise volcano (Reunion Island, France) is one of the most active basaltic shield volcanoes in the world. It has reached an anomalous activity level in the past years with a major eruption occurring in April 2007. In this paper, we explore the statistical, spatial and temporal behavior of the L-Band backscattering coefficient at both HH and HV polarizations over different type of terrains in the Fournaise lava field as a function of the LiDAR intensity data. The correlation will be used in setting empirical models to correct for the L-Band phase distortion on ash and rough surfaces in volcanic terrains. Numéro de notice : C2010-067 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1109/IGARSS.2010.5649245 En ligne : https://doi.org/10.1109/IGARSS.2010.5649245 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102028