Publication Date:
2021-12-01
Description:
The Santa Barbara and Aragona areas are affected
by mud volcanism (MV) phenomena, consisting of continuous
or intermittent emission of mud, water, and gases. This
activity could be interrupted by paroxysmal events, with an
eruptive column composed mainly of clay material, water,
and gases. They are the most hazardous phenomena, and today
it is impossible to define the potential parameters for
modelling the phenomenon. In 2017, two digital surface
models (DSMs) were performed by drone in both areas, thus
allowing the mapping of the emission zones and the covered
areas by the previous events.
Detailed information about past paroxysms was obtained
from historical sources, and, with the analysis of the
2017 DSMs, a preliminary hazard assessment was carried
out for the first time at two sites. Two potentially hazardous
paroxysm surfaces of 0.12 and 0.20 km2 for Santa Barbara
and Aragona respectively were defined. In May 2020, at
Aragona, a new paroxysm covered a surface of 8721m2. After
this, a new detailed DSM was collected with the aim to
make a comparison with the 2017 one. Since 2017, a seismic
station was installed in Santa Barbara. From preliminary
results, both seismic events and ambient noise showed a frequency
of 5–10 Hz.
Description:
Dipartimento Regionale Protezione Civile – Regione Sicilia (grant no. 840/December 2016)
Description:
Published
Description:
3407–3419
Description:
7SR AMBIENTE – Servizi e ricerca per la società
Description:
JCR Journal
Keywords:
mud volcanoes
;
Santa Barbara (Sicily)
;
Aragona (Sicily)
;
risk assessment
;
05.08. Risk
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
Permalink
