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Improvement and development of the tiltmetric monitoring networks of Neapolitan volcanoes
Author(s)
Language
English
Obiettivo Specifico
2V. Struttura e sistema di alimentazione dei vulcani
Status
Published
JCR Journal
JCR Journal
Title of the book
Issue/vol(year)
1/61(2018)
Pages (printed)
SE114
Issued date
2018
Abstract
The goal of this work is to illustrate the technological development of
the tiltmetric monitoring network of Osservatorio Vesuviano, since 1986,
retracing the technical steps that led to the current network configuration.
This network is devoted to the monitoring of the three Neapolitan
volcanoes: Vesuvius, Phlegrean Fields and Ischia Island, which are
widely recognized among the volcanic areas with the highest risk worldwide.
Ground tilt monitoring had to face numerous technical obstacles,
mainly due to background noise characterizing densely urbanized areas
like the Neapolitan volcanoes. The network started with the first installations
of horizontal optical pendulums that recorded analog signals. In
the following years, the network was equipped with electronic sensors
more handy and easy to install. A technological leap forward occurred
when the first digital sensors were installed in deep boreholes, allowing
them to record tilt signals not affected by thermal disturbances. These
data are digitally acquired and managed by a datalogger for the data
storage and exchange. Currently the network consists of 10 sensors in
Phlegrean Fields, 8 in Vesuvius and 3 in Ischia Island, making it one of
the densest tiltmetric volcano monitoring network worldwide. This network
can boast a database containing thirty years of data acquired by
both analog and digital stations. Data consists of both ground and
meteorological signals, such as temperature and atmospheric pressure. In
these areas they allow a continuous monitoring of the temporal variations
of the ground tilt with important implications in understanding the dynamics of these active volcanoes.
the tiltmetric monitoring network of Osservatorio Vesuviano, since 1986,
retracing the technical steps that led to the current network configuration.
This network is devoted to the monitoring of the three Neapolitan
volcanoes: Vesuvius, Phlegrean Fields and Ischia Island, which are
widely recognized among the volcanic areas with the highest risk worldwide.
Ground tilt monitoring had to face numerous technical obstacles,
mainly due to background noise characterizing densely urbanized areas
like the Neapolitan volcanoes. The network started with the first installations
of horizontal optical pendulums that recorded analog signals. In
the following years, the network was equipped with electronic sensors
more handy and easy to install. A technological leap forward occurred
when the first digital sensors were installed in deep boreholes, allowing
them to record tilt signals not affected by thermal disturbances. These
data are digitally acquired and managed by a datalogger for the data
storage and exchange. Currently the network consists of 10 sensors in
Phlegrean Fields, 8 in Vesuvius and 3 in Ischia Island, making it one of
the densest tiltmetric volcano monitoring network worldwide. This network
can boast a database containing thirty years of data acquired by
both analog and digital stations. Data consists of both ground and
meteorological signals, such as temperature and atmospheric pressure. In
these areas they allow a continuous monitoring of the temporal variations
of the ground tilt with important implications in understanding the dynamics of these active volcanoes.
Type
article
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