Opera 2015 - Episode
Event number: None, Paroxysm
Date/time: 2015-01-31 06:30 UTC to 2015-02-02 05:30 UTC
Area: Etna Volcano
Etna volcano eruption started 2015-01-31 06:30 (13 km
far from ERO station sensors)
Eruption picture taken from http://www.vnews24.it/2015/02/02/etna-eruzione-foto/
Distance calculation from ERO monitoring station and the eruption
crater made with Google Maps
Vulcanic tremor detected during the eruption:
Like reported by INGV
ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA - SEZIONE DI
CATANIA - OSSERVATORIO ETNEO
ERO Monitoring station, geophone (top) and induction coil
(bottom), 290115 0000 to 030215 1200 (132 hours monitoring)
Paroxysm (purple rectangle) starts 310115 06:30 and stops 020215
Within the orange rectangles noises produced by human activity,
during the daytime hours.
Schumann resonances marked on left side of bottom spectrogram.
One can easily observe that, during the 24 hour period, there are
many signals anthropogenic nature with an intensity much higher of
the background noise
Like detected by our geophone. Multistrip hourly representation.
Magnetic field daily multistrip.
Magnetic field detected with induction coil. Paroxysm event start,
stop and length, are marked with purple arrows.
Some service interruptions were caused by maintenance work we have
made on the monitoring station (parts in yellow ovals).
Any change of the magnetic field than normal daily is detectable
by this graph: no particular signal preceded or accompanied the
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