Publikationsdatum:
2017-04-04
Beschreibung:
On 27 February 2007, a new eruption occurred on
Stromboli which lasted until 2 April. It was characterized by
effusive activity on the Sciara del Fuoco and by a paroxysmal
event (15 March). This crisis represented an opportunity for us
to refine the model that had been developed previously
(2002–2003 eruption) and to improve our understanding of
the relationship between the magmatic dynamics of the
volcano and the geochemical variations in the fluids. In
particular, the evaluation of the dynamic equilibrium between
the volatiles (CO2 and SO2) released from the magma and
the corresponding fluids discharged from the summit area
allowed us to evaluate the level of criticality of the volcanic
activity. One of the major accomplishments of this study is a
4-year database of summit soil CO2 flux on the basis of
which we define the thresholds (low–medium–high) for this
parameter that are empirically based on the natural volcanological
evolution of Stromboli. The SO2 fluxes of the
degassing plume and the CO2 fluxes emitted from the soil
at Pizzo Sopra la Fossa are also presented. It is noteworthy
that geochemical signals of volcanic unrest have been clearly
identified before, during and after the effusive activity. These
signals were found almost simultaneously in the degassing
plume (SO2 flux) and in soil degassing (CO2 flux) at the
summit, although the two degassing processes are shown to
be clearly different. The interpretation of the results will be
useful for future volcanic surveillance at Stromboli.
Beschreibung:
Published
Beschreibung:
443-456
Beschreibung:
1.2. TTC - Sorveglianza geochimica delle aree vulcaniche attive
Beschreibung:
2.4. TTC - Laboratori di geochimica dei fluidi
Beschreibung:
JCR Journal
Beschreibung:
reserved
Schlagwort(e):
Stromboli volcano
;
CO2 soil flux
;
Geochemical monitoring
;
2007 eruption
;
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
;
04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques
;
05. General::05.02. Data dissemination::05.02.01. Geochemical data
;
05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions
Repository-Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Materialart:
article
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