Seismic service

Responsibilities toward Civil Protection

•we provide location and magnitude estimations to the Italian Civil Protection for all Ml>2.5:

– in two minutes a short, qualitative notification;

–a preliminary (automatic) determination within 5 minutes;

– a robust revised location within 30 minutes.

•Non mandatory, but convenient: answer to press, public, local authorities.

•3 persons on shift 24/7 (2 seismologist and 1 engineer);

•1 senior seismologist on call;

AIDAAdvanced Information and Data Acquisition system for seismology

Off-line

real time

Network (inclusive of partners)

Around 450 stations from 30 different networks,

~350 IV+MN stations~24 Tbytes (2007-today) arc'd~5 Tbytes/year60 short period120 accelerometers(co-located to velocimeters)

Tipical 3-sensor station (acc, vel, gps)Sant’Agata di Puglia (FG)

Protocol/Link combinations

Real time acquisition monitoring

SL monitor shows data latencies in real time,but also real time waveform, through SeisGram2k.NAQS visual check is available through Waveform.

SpotEW

LocationsItalian Seismicity: hypoinverse(no velocity regionalization)

On a global scale: Early-ESTWith the extra-value of tsunamigenic potential

Near real time revisionSispick2

• home grown software adapted to EW;

• Used for nrt and bulletin;

• MS Windows, but the personnel on shift is acquainted to it and to the os;

• DB input/output.

Views on the wallscreen

SpotEW

Time Domain Moment Tensors

Shake Maps, etc.etc.

Database as an active toolWe have many db's, but integrated in one logical huge db, to keep track of all the information regarding stations and procedures:Configuration filesChannel RoutingCoordinatesResponse FunctionsDataless informationBinder parametersPicker Channel paramsData permissionsStation problem tracking.....

Database as a repository

but also to store and retrieve seismological results:

• Locations

• Bulletins

• QRT manual relocations and communications

• Moment tensors

• Global locations

• Web pages

• Alerts

• Reports

• ....

Archiving tools

Data archiving

“Broad-band seismic recording has the purpose of recording all seismic signals of interest in a single three-component set of seismograms, as opposed to recording different types of signals in separate channels. “ (E. Wielandt)

This implies:

• Continuous signals

• Accurate metadata

• Multiple data streams (downsampling)

Archive operations

•Data are archived in real time (slarchive–Compressed miniseed (steim2)–Downsampled (according to sensor bandwidth)–Day/component files–Quality checked•The day after:–Data are completed•SL: rsync-ed from stations•NMX: re-requesting data from dataserver–Files are transferred to SAN

European Integrated Data Archive

www.seismicportal.eu

Recent efforts: increase system robustness

•2 complete and indipendent chains in Rome for acquisition, analysis and archive

•2 further chains in Sede Irpinia for acquisition (NMX and SL), analysis (EW) and archive

•Shared routines in case of major failures (disaster recovery, in progress)

RomeSede Irpinia

Catania

Thanks!!