Options
The Stromboli Volcano Broadband Seismic Monitoring System
Author(s)
Type
Conference paper
Language
English
Obiettivo Specifico
1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
3.6. Fisica del vulcanismo
Status
Published
Conference Name
Issued date
April 2004
Conference Location
Vienna
Abstract
After the beginning of the eruptive crisis that has interested the Stromboli volcano
(Southern Italy) at the end of 2002, starting the second half of January 2003 it has been
installed on the island a centralized broadband seismic network, at present composed
by 11 stations, all equipped with Guralp CMG-40T (0,02-60 s period). The network
is one of the first designed to monitor and analyze in real time the very long periods
(VLP) events, which are produced, in the case of the Stromboli volcano, at a rate of
hundreds per day. The disposition of the stations has been chosen in order to realize an
azimuth and distance homogeneously distribution regarding possible seismic sources
situated along the upper part of feeding system of the volcano. The network shows a
distribution of stations that encircle the volcanic structure to various levels regarding
the area of craters and the eruptive vents, with distance of the stations from the emission
centers that vary between some hundreds of meters to about 2 kilometers. The
signals, acquired using 24 bits A/D data loggers designed by INGV - CNT, are transmitted
via UHF radiomodems to two intermediate centralization sites . The first one
is the Observatory of S. Vincenzo where are centralized the stations installed on the
northern side of the island, the second is the Observatory INGV in the Lipari island,
where are centralized all the other stations. From these two intermediate centralization
sites the data are transmitted via TCP/IP protocol, using the Italian scientific-academic
internet network GARR, towards the INGV monitoring centers of Catania and Observatory
Vesuviano (Naples), where the broadband signals are monitored and processed,
using a 64 CPU computer cluster to perform the VLP real-time analysis.
(Southern Italy) at the end of 2002, starting the second half of January 2003 it has been
installed on the island a centralized broadband seismic network, at present composed
by 11 stations, all equipped with Guralp CMG-40T (0,02-60 s period). The network
is one of the first designed to monitor and analyze in real time the very long periods
(VLP) events, which are produced, in the case of the Stromboli volcano, at a rate of
hundreds per day. The disposition of the stations has been chosen in order to realize an
azimuth and distance homogeneously distribution regarding possible seismic sources
situated along the upper part of feeding system of the volcano. The network shows a
distribution of stations that encircle the volcanic structure to various levels regarding
the area of craters and the eruptive vents, with distance of the stations from the emission
centers that vary between some hundreds of meters to about 2 kilometers. The
signals, acquired using 24 bits A/D data loggers designed by INGV - CNT, are transmitted
via UHF radiomodems to two intermediate centralization sites . The first one
is the Observatory of S. Vincenzo where are centralized the stations installed on the
northern side of the island, the second is the Observatory INGV in the Lipari island,
where are centralized all the other stations. From these two intermediate centralization
sites the data are transmitted via TCP/IP protocol, using the Italian scientific-academic
internet network GARR, towards the INGV monitoring centers of Catania and Observatory
Vesuviano (Naples), where the broadband signals are monitored and processed,
using a 64 CPU computer cluster to perform the VLP real-time analysis.
File(s)
Loading...
Name
EGU04-J-06536.pdf
Size
34.24 KB
Format
Adobe PDF
Checksum (MD5)
97e6cc1722d0c6fc045427daba310f79