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Automated detection of thermal features of active volcanoes by means of infrared AVHRR records / N. Pergola in Remote sensing of environment, vol 93 n° 3 (15/11/2004)  

Public [article]  inRemote sensing of environment > vol 93 n° 3 (15/11/2004) . - pp 311 - 327 Titre : Automated detection of thermal features of active volcanoes by means of infrared AVHRR records Type de document : Article/Communication Auteurs : N. Pergola, Auteur ; F. Marchese, Auteur ; V. Tramutoli, Auteur Année de publication : 2004 Article en page(s) : pp 311 - 327 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] analyse diachronique [Termes IGN] anomalie thermique [Termes IGN] détection automatique [Termes IGN] éruption volcanique [Termes IGN] Etna (volcan) [Termes IGN] fiabilité des données [Termes IGN] image NOAA-AVHRR [Termes IGN] image thermique [Termes IGN] image TIROS-AVHRR [Termes IGN] méthode robuste [Termes IGN] prévention des risques [Termes IGN] rayonnement infrarouge thermique [Termes IGN] Stromboli (volcan) [Termes IGN] surveillance géologique [Termes IGN] tâche claire [Termes IGN] test de performance [Termes IGN] volcan Résumé : (Auteur) An innovative, Advanced Very High Resolution Radiometer (AVHRR)-based technique for improved automatic detection of volcanic Hotspots and thermal anomalies is proposed in this paper. It is mainly based on a multitemporal analysis of historical, long-term satellite records. Such a technique basically rests on the Robust AVHRR Techniques (RAT) approach, which has been already successfully applied to sevreral natural and environmental emergencies (e.g., fires, floods, earthquakes). In this work, the proposed technique has been tested on an extended set of eruptive events of Mt. Etna and Stromboli volcanoes. Results achieved, in terms of reliability (low false alarm rate) as well as of effectiveness (detection sensitivity), are described in detail. Moreover, the potential in low-level thermal anomaly detection, as possible pre-eruptive thermal signs, is also addressed and preliminary results obtained for a couple of events, discussed. The study cases here presented show the benefits of such a technique especially when different observational conditions (time/season of pass, atmospheric moisture content, solar illumination, satellite angles of view, etc.) are considered, making such a method globally applicable. The future prospects, also in terms of possible operational scenarios, coming from the implementation of such an approach on the new generation of satellite sensors (such as SEVIRI aboard Meteosat Second Generation) are also discussed. Numéro de notice : A2004-439 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2004.07.010 En ligne : https://doi.org/10.1016/j.rse.2004.07.010 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26959 [article]