Publication Date:
2021-03-01
Description:
Fluids are key factors in volcanic and hydrothermal
processes, and fluid circulation into, and release from, volcanoes take extraordinarily variegate forms. Volcanic gases
are persistently dissipated by crater fumaroles and openvents, to sustain vigorous plumes in the most extreme cases. Meteoric fluids permeate through volcanic rocks and,
when variably admixed with ascending magma-sourced
fluids, drive the incessant activity of volcano-hosted hydrothermal systems. Less visible, but not less important,
forms of degassing include the volatile release from soils
and cold groundwater systems in volcano peripheries. Investigating the chemistry of volcanic-hydrothermal fluids
and quantifying the associated volatile fluxes are crucial
to understanding how volcanoes operate, and to fully constrain hydrothermal circulation in the subsurface.
Volcano-hydrothermal
fluids have been a matter
of study, interest and fascination for Prof. Mariano
Valenza over his entire lifetime. For more than four
decades, Mariano Valenza,
Professor of Geochemistry
and Volcanology at Università di Palermo, investigated, with incessant enthusiasm, unique curiosity, and
distinctive intellectual rigour, the chemistry of fluids
in volcanic environments.
Over the years, he contributed enormously to the development of fluid geochemistry
by pioneering research in a variety of related fields, including -to name only a few- the redox properties of magmatic
gases, their diffuse release through soils, and their continuous monitoring via instrumental networks. In doing so, he
was an example for generations of scientists, leaving an
indelible mark in the field of volcanic and hydrothermal
fluid geochemistry.
With this thematic set of fifteen papers -published in this
and in the next issue of the Italian Journal of Geoscienceswe wish to properly honour Mariano Valenza’s memory. The
collection of papers covers a variety of complementary topics and summarizes the state-of-the-art in the field of fluid
geochemistry of volcanic and geothermal areas.
Description:
Published
Description:
4V. Processi pre-eruttivi
Description:
1IT. Reti di monitoraggio e sorveglianza
Description:
JCR Journal
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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