Publication Date:
2017-04-04
Description:
Natural precipitation and water samples from
passive devices were collected at Mt. Vesuvius and Vulcano
Island, Italy, during the period 2004–2006, in order to
investigate its possible interactions with fumarolic gases.
Evidence of chemical reactions between fumarolic fluids
and rain samples before and after its deposition into the
sampling devices was found at Vulcano Island. Very low
pH values (down to 2.5) and significant amounts of chlorine
and sulfate (up to 22 mEq/l) were measured at sampling
points located close to the fumarolic field. In contrast,
anthropogenic contributions and/or dissolution of aerosols
(both maritime and continental) influence the chemistry of
rainwaters at Mt. Vesuvius, which show inter-annual
variations that are highly consistent with those recorded at
the coastal site at Vulcano Island. Chemistry of waters
directly exposed to fumarolic fluids may then give useful
information about its temporal evolution, holding the signal
of the ‘‘maximum’’ chemical event occurred in the meanwhile.
In addition, the observation of the health status of
vegetation colonizing the immediate surroundings of the
fumarolic fields, due to its strong dependence on the
interactions with these fluids, may work as a possible
biomarker of volcanic activity
Description:
In press
Description:
1.2. TTC - Sorveglianza geochimica delle aree vulcaniche attive
Description:
N/A or not JCR
Description:
reserved
Keywords:
Geochemistry
;
Precipitation
;
Fumarole
;
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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