Seismic monitoring in Italy: INGV Network
L. Luzi, R. Puglia, P. Augliera, M. Massa S. Mazza, A. Mandiello
Brief history
The Is?tuto Nazionale di Geofisica e Vulcanologia (INGV) was funded in 1999 with the objecEve of gathering in one insEtuEon the Italian researchers operaEng in the field of geophysics and volcanology The INGV is in charge of the seismic monitoring of the Italian territory and the main Italian volcanoes, through advanced monitoring networks
Brief history • The INGV seismic network started in the ‘80s, aOer the Irpinia earthquake.
• Since 2001 the monitoring system managed by INGV has been strongly improved thanks to the support of the (DPC) and the project Prosis, funded by the ministry of the research (MIUR), with parEcular emphasis given to real-‐Eme data transmission.
• The system robustness is guaranteed by independent acquisiEon chains in the departments of Rome, Irpinia and Catania
Responsibili?es toward Civil Protec?on
• INGV provides locaEon and magnitude esEmaEons for all Ml>2.5: within 2 min a short, qualitaEve noEficaEon within 5 min a preliminary (automaEc) determinaEon within 30 min a robust revised locaEon
• Non mandatory, but convenient: answer to press, public, local authoriEes
• 3 persons on shiO 24/7 (2 seismologist and 1 engineer) • 1 senior seismologist on call
Seismic service
The network Around 450 stations from 30 different networks, ~350 IV+MN stations ~24 Tbytes (2007-today) arc'd ~5 Tbytes/year 60 short period ~120 accelerometers (co-located to velocimeters)
Instruments The staEons are equipped with either commercial (mostly Nanometrics, Kinemetrics and ReOek) or INGV-‐ produced digiEzers (GAIA2). Episensor accelerometers are coupled mainly with Trillium sensors. In about 100 sites, conEnuous GPS's send stream data at 1s or 30s sampling rate. Presently, data from about 350 staEons are received in real-‐Eme, mostly through satellite links and terrestrial digital lines, while other data are received through radio links and Internet. A few dense dial-‐up local networks in central Italy contribute to the monitoring system.
Typical 3-‐sensor sta?on (acc, vel, gps) Sant’Agata di Puglia (FG)
Sensors and digi?zers
Others207%
SS-1-Ranger62%
LE3D-1S72%
Trillium-240s83%S-13
196%
Trillium-120s217%
STS-2-120S2910%
LE3D-5S3110%
Trillium-40s15853%
Other318%
Q4120133%
Taurus246%
GAIA1267%
GAIA212733%
Trident16342%
....104 combinations!
SHL -‐ Satellite Hellasat SIN -‐ Satellite Intelsat SLK -‐ Satlink UMT -‐ Modem UMTS CDA -‐ CDA WFI -‐ WIFI SPC_AN -‐ SPC sede Ancona IN_GIB -‐ Internet dalla sede di Gibilmanna SNM -‐ Satellite Nanometrics RUP – Rupa PRR -‐ PonteRadio+RUPA FWB – FastWeb WND -‐ Wind
Others 4%
RUP-NAQS 2%UMT-SL 2%
INT-EW 2%SNM-NAQS 2%
WFI-SL 3%CDA-SL 3%CDA 4%SLK-SL 4%INT-NAQS 4%
SHL-NAQS 8%
RUP-SL 9%
INT-SL 12%
INT 19%
SIN-NAQS 23%
Protocol/Link combinaEons
The develop of an advanced system • Realize a robust and versaEle system • Integrate partner networks • Face a strong earthquake • Build up a secure, redundant system • Take into account new commitments
(projects) • Make data available to research (in real Eme
and off-‐line) • Support real Eme quality check and data
mining procedures
AIDA Advanced Informa?on and Data Acquisi?on system for seismology
Off-line
Real time
Acquisi?on • The SeedLink server is the main collector, from
where data are retrieved for quasi real Eme applicaEons (e.g. TDMT)
• InterNAQS for other nmx users • Data flow from SL and NAQS (nmxptool with 2
min delay) to EarthWorm, as well as to the archive
• Big users only (projects and InsEtuEons) are allowed to connect, on bilateral agreements
Data archiving We have many db's, but integrated in one logical huge db, to keep track of all the information regarding stations and procedures: Configuration files Channel Routing Coordinates Response Functions Dataless information Binder parameters Picker Channel params Data permissions Station problem tracking .....
SM monitoring at INGV • The planning of the installaEon of accelerometric sensors started in 2005, with the aim of coupling the velocimetric sensors and recover the seismic signal in case of velocity trace clipping
• In 2006 the INGV started the acEvity of coupling the velocimetric sensors and, at the present Eme, about 120 staEons have been completed
• The mobile network, that is installed during an emergency, was equipped with SM sensors for the first Eme during the Garda 2004 sequence
Sites equipped with SM sensors
At present Eme about 120 accelerometers are co-‐located to velocimeters and transmit conEnuous data to the SeedLink server
SM monitoring at INGV
• The INGV staEons (with few excepEons) are installed in free field and far from urban areas, as the main goals of the network are seismic monitoring and support to seismic research.
• The accelerometric network managed by the civil protecEon (RAN) is only equipped with accelerometric sensors and the aim is to monitor ground shaking in urban areas
INGV SM data archiving • In 2012, during the Emilia sequence, INGV started its policy of data archiving
Two main repositories are used: • ISMD for RT and distribuEon to the seismological community
• DYNA-‐Archive for the distribuEon to the engineering and engineering seismology community
+ SM archives: ISMD DYNA-‐archive
New archives in AIDA
INGV Strong Mo?on Data
Raw acceleraEons are downloadable in sac format (counts), while ascii waveforms are given available aOer an automaEc processing in order to obtain the relevant meta-‐data, the velocity and displacement Eme series and acceleraEon response spectra. AOer some months the events will be published on Dyna-‐Archive aOer the manual revision.
DYNA-‐Archive
DYNA-‐archive (DYNamic Accelerometric archive) is a web-‐portal aiming at distribuEng with delay aOer the earthquake occurrence the final version of the INGV strong moEon aOer a revision of the automaEc results provided in quasi real-‐Eme by the ISMD system. Accelerometric waveforms are manually processed in order to calculate the SM parameters, velocity and displacement waveforms and acceleraEon response spectra. Event and staEon metadata are also revised
http://dyna.mi.ingv.it/DYNA-archive/
Unprocessed acceleration, processed acceleration, velocity and displacement plus acceleration response spectra (5% damping) are distributed
Processed waveforms
Poten?al integrated SM monitoring
An agreement with RAN has been established to receive the PGA of the RAN staEons and produce integrated shakemaps
Actual integra?on
Thank you!