Assessment and improvement of a robust satellite technique (RST) for thermal monitoring of volcanoes

The RST approach (robust satellite technique) is a multi-temporal scheme of satellite data analysis already successfully used to monitor volcanoes at different geographic locations. In this work, the results of a long-term validation analysis of RST-based hot spot products are presented. This study...

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Bibliographic Details
Published in:Remote sensing of environment 2011-06, Vol.115 (6), p.1556-1563
Main Authors: Marchese, F., Filizzola, C., Genzano, N., Mazzeo, G., Pergola, N., Tramutoli, V.
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Applied geophysics
Assessments
Biological and medical sciences
Data processing
Earth sciences
Earth, ocean, space
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General aspects. Techniques
Hazard mitigation
Hot spots
Internal geophysics
Monitoring
Monitors
NOAA-AVHRR
Robust satellite technique
Satellites
Teledetection and vegetation maps
Thermal monitoring
Volcanoes
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Summary:The RST approach (robust satellite technique) is a multi-temporal scheme of satellite data analysis already successfully used to monitor volcanoes at different geographic locations. In this work, the results of a long-term validation analysis of RST-based hot spot products are presented. This study was performed processing fourteen years of NOAA-AVHRR (National Oceanic and Atmospheric Administration-Advanced Very High Resolution Radiometer) records acquired over Mt. Etna area between 1 January 1995 and 31 December 2008, at different overpass times (day/night), and analyzing hundreds of volcano bulletins reporting information on Mt. Etna eruptive activity, provided by visual observations and ground-based measurements. An optimized configuration of the RST approach, named RST VOLC, is also, for the first time, presented and discussed here. This method, thanks to a better tradeoff between reliability and sensitivity, may be particularly suitable to support operational systems for volcano monitoring and hazard mitigation. ► A new, RST-based technique (RST VOLC) for volcanic hot spot detection is presented. ► A long term validation analysis (14 years) of RST VOLC hot spot products is discussed. ► A comparison with standard RST approach is carried out. ► Improvements in tradeoff between reliability and sensitivity are evaluated. ► Advantages for pre-eruptive thermal anomaly identification are discussed.
ISSN:0034-4257
1879-0704
DOI:10.1016/j.rse.2011.02.014