Publication Date:
2017-04-04
Description:
In order to improve the observation capability in one of the most active volcanic areas
in the world, Mt. Etna, we developed a processing method to use the surveillance cameras for
a quasi real-time mapping of syn-eruptive processes. Following an evaluation of the current
performance of the Etna permanent ground NEtwork of Thermal and Visible Sensors (Etna_NETVIS),
its possible implementation and optimization was investigated to determine the locations of
additional observation sites to be rapidly set up during emergencies. A tool was then devised
to process time series of ground-acquired images and extract a coherent multi-temporal dataset of
georeferenced map. The processed datasets can be used to extract 2D features such as evolution
maps of active lava flows. The tool was validated on ad-hoc test fields and then adopted to map
the evolution of two recent lava flows. The achievable accuracy (about three times the original
pixel size) and the short processing time makes the tool suitable for rapidly assessing lava flow
evolutions, especially in the case of recurrent eruptions, such as those of the 2011–2015 Etna activity.
The tool can be used both in standard monitoring activities and during emergency phases (eventually
improving the present network with additional mobile stations) when it is mandatory to carry out a
quasi-real-time mapping to support civil protection actions. The developed tool could be integrated
in the control room of the Osservatorio Etneo, thus enabling the Etna_NETVIS for mapping purposes
and not only for video surveillance.
Description:
Published
Description:
Vienna, Austria
Description:
5V. Sorveglianza vulcanica ed emergenze
Description:
open
Keywords:
volcano monitoring
;
lava flow mapping
;
surveillance camera
;
hazard assessment
;
geo spatial dataset
;
04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
Abstract
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