The Friuli Venezia Giulia accelerometric network RAF and ... · Authorities which make decisions immediately after a strong earthquake occurrence. During a strong earthquake, the

The Friuli Venezia Giulia accelerometric network RAF and its integration with the RAN.Giovanni Costa

Seismologia Research and Monitoring group, Department of Mathematics and Geosciences, University of Trieste, Italy;

Seismological Researcher

and Monitoring group

Giovanni Costa, Piero Falconer, Lorenzo Furlan, Antonella Gallo, Lara Tiberi, Blaž Vičič, Giuliana Zoppé

1993 - 2000 2000 -

2011 -

1976 – 2016 Simposio “Monitoraggio sismico e accelerometrico per la Protezione Civile: stato dell’arte e nuove strategie a 40 anni dal terremoto del Friuli / CRS Udine 19 aprile 2016

Autenticazione della SIM associazione IP statico

Private APN

Server Radius

Telecom

DPC

CDN

SIM SIM SIM

Registrazione della SIM accesso alla rete GPRS tramite APN dedicato

Stazioni

trasmissione dati GPRS

Passo Pura

GemonaGorizia

Monte Pala

X

Stazione CARC - Borgo Teresiano - Trieste

(Cucchi et al., 2013)

0 2 4 6 8

Frequency Hz

0

4

8

12

Resp

onse

spect

ra r

atio

CARC station HVSR

North components

30/08/2003 Friuli Ml 3.8

14/09/2003 Appennino Ml 5.0

23/05/2004 Bosnia Mb 4.9

12/07/2004 Bovec Mlb 5.1

14/09/2004 Rijeka Mb 4.5

24/11/2004 Garda Mb 5.3

25/11/2004 Adriatico Mb 5.2

(Fitzko et al., 2007)

0 2 4 6 8

Frequency Hz

0

4

8

12

Fou

rier

spect

ra r

atio

CARC noise

North/Vertical

East/Vertical



0 2 4 6 8

Frequency Hz

0

4

8

12

Fou

rier

spect

ra r

atio

CARC noise

North/Vertical

East/Vertical

0 2 4 6 8

Frequency Hz

0

4

8

12

Fou

rier

spect

ra r

atio

CARC noise meas. upper floor vs. basement

NS

EW

Z



GESC

GEPF

GETM

Gemona fan

Evento Bovec – Krn 1998 (Ml 5.7)

spettri di risposta (damping 5%)

Evento Bovec – Krn 2004 (Ml 5.2) spettri di risposta

(damping 5%)

GESCGEPF

GETM GEDE

Gemona del Friuli

functionality

functionality

Daily report

orb

Daily

history

Funzionalita_RF20160514.xml

0

10

20

30

40

50

60

70

80

90

100

110% Funzionalità

RAN

RAF

9/ 7/ 2015 – 17/ 4/2016

CE3RNCentral and Eastern European Earthquake Research Network

RAF

BOVEC 1998

BOVEC 2004

Živčić, (Susans, 2007)

THE INTERREG IIIA PROJECTs

“TRANS-NATIONAL

SEISMOLOGICAL NETWORK

IN THE SOUTH-EASTERN ALPS”

Trans-National Seismological Networks in

the South-Eastern Alps-

CE3RN

FASTLINK

Trans-National Seismological

DATABASE

2003-201613:04:15.0002004194

13:04:30.0002004194

13:04:45.0002004194

13:05:00.0002004194

13:05:15.0002004194

13:05:30.0002004194

13:05:45.0002004194

ARSA HHZ

BILJ BHZ

BOJS HHZ

CADS HHZ

CEY HHZ

COLI SHZ

CRES HHZDOBS HHZ

DRE SHZ

GCIS HHZGOLS HHZ

GORS HHZ

GROS HHZ

KBA HHZKNDS HHZ

KOGS HHZ

LEGS HHZLISS HHZ

LJU HHZ

LSR SHZ

NOME HHZ

OBKA BLZ

PDKS HHZPERS HHZ

ROBS HHZ

TRI HHZ

VINO BHZ

VISS HHZ

ZAMG

OGS

DST/OGS

ARSO - provisional stations

not available at the time of the earthquake



200320142016Southeastern Alps Transfrontalier Network“Reti sismologiche senza frontiere nelle Alpi sud-orientali“ and “FASTLINK”

Moratto et al., 2009

Misfit

Stucchi et al. (2007) 264.01

N

II

Misfit

N

i

OBSCOM

N=137

Moratto et al., 2009

Friuli Venezia Giulia

Accelerometric Network – RAF

RAN - Syscom

RAN - Kinemetrics

RAF

ISNet

RAN - CESI

RAN RAF

Real-time system

A fast seismic data analysis is essential to provide useful information to

Authorities which make decisions immediately after a strong earthquake

occurrence. During a strong earthquake, the modern accelerometers are the

only instruments which can provide near source high-quality data that are

important both for scientific (e.g. a better understanding of the source

characteristic) and for civil protection purposes (e.g. a rapid provision of

information on ground motion parameters to Authorities).

Automatic and fast techniques have been developed by the University of Trieste

for the automatic real-time strong motion data analysis. These techniques have

tested at University of Trieste using the VBB and strong-motion data of the

Central and Eastern European Earthquake Research Network (CE3RN). Starting

from 2012 this technique has been installed and optimized in the data acquisition

centre of the National Department of Civil Protection of Italy (DPC) in Rome to

process the near real-time data of the National Accelerometric Network (RAN).

Fast strong motion data analysis

Fast strong motion data analysis

The developed procedure estimates in real time the seismic moment, moment

magnitude and corner frequency of events recorded by a network comprising

broad-band, velocimeter and accelerometer sensors.

Engineering and damage parameters

PGA, PGV, PGD, PSA, duration, Arias, Housner, RMSA, intensity of zero

crossing, Saragoni index, damage factor, etc.

are also obtained in near real-time, archived and sent by e-mail to the Civil

Defence Authorities.

The procedure produces reliable results even for small-magnitude events (≈ 2).

originstamagwfmeas

wfmax

DSTalevDSTalertplacessnetstaorigin

Alert (python)

alertmeas

Alert

green: new tables

DmG.sms

dbmw (fortran90)

Seismic Moment, f0, stress drop, Mw computation

Response spectra and Ground Motion Parameters

Signal pre-processing

dbmw (fortran90)


Select N, E, Zcomponent

wfdiscorigin

netmag

Select originMl > magmin

dismin<dist<dismax Reject

Extract noise and S-waves windows

arrivalassoc

Apply, rmean, detrend, d2,instrumental

response

Apply bandpassButterworth

filter

compute instrument response

calibrationSite

Sensorinstrument

F2 > f1F1 < fmin, f2 > fmax

compute displacement, velocity, acceleration

waveforms


Fourier spectra

Define low- high- pass corner frequencies

(f1, f2)

dbmw (fortran90)


Select N, E, Zcomponent

wfdiscorigin

netmag

Select originMl > magmin

dismin<dist<dismax Reject

Extract noise and S-waves windows

arrivalassoc

Apply, rmean, detrend, d2,instrumental

response

Apply bandpassButterworth

filter

compute instrument response

calibrationSite

Sensorinstrument

F2 > f1F1 < fmin, f2 > fmax


waveforms


Fourier spectra

Define low- high- pass corner frequencies

(f1, f2)

f1

f2SNR > 3

dbmw (fortran90)

compute transversal component

Seismic Moment, f0, stress drop, Mw computation

Compute Fourierspectrum

Correct spectra for geometrical spreading and anelastic

attenuation

Estimate velocity and displacement spectra at the

source

Determine the seismic moment, Mw, f0, stress drop, equivalent

radius

stamwnetmwnetmag

ANDREWS METHOD (1986)

Brune source model

1.180)( ffQ (Consoli and Rovelli, 1981)

(Rmax =70km)

)()()()( RGfEfDfA

12

0

3

0 14

)(

f

f

k

MfD

)(

)(fQ

fT

efE

RRG

1)(

kM 3

0 4

KANAMORI (1979) 1.6)log(3

20 MMW

dffVSV

f

f

sup

inf

22

dffDSD

f

f

sup

inf

22

2/12/32 224 SVSD

222/10 SVSDf

Gallo et al., 2014

Gallo et al., 2014

SEISMIC MOMENT AND MOMENT MAGNITUDE COMPUTATION

dbmw (fortran90)

compute response spectra (2, 5, 10, 20 %)

Compute PGA, PGV, PGD, PSA03, PGA10,

PGA30, duration

Compute RMSA, Intensity of zero crossing, Saragoni index, damage

factor

wfparamwfdamage

Response spectra and Ground Motion Parameters

Shake Maps

generation

new dbmw (C)

Select N, E, Zcomponents From “chan”

Fortran90 C

orb2wf orb2wf X

Rotate components to N and E

Energy computation

originsite

GeositeSpetparwfparam

wfdamagenetmw SPT (python)

SPT

SPTmap.gmt

green: new tables

future development: python

Period (s)

PG

A (

cm/s

2)

Response spectrum

Smoothed spectrum

Design spectrum

siteGeositeNorSpectra

NorSpectra (python) TR=30 R=30 TR=50 TR=72 TR=101 TR=140 TR=201 TR=475 TR=975 TR=2475 ID LON LAT ag Fo TC * ag Fo TC * ag Fo TC * ag Fo TC * ag Fo TC * ag Fo TC * ag Fo TC * ag Fo TC * ag Fo TC * 13111 6.5448 45.134 0.263 2.50 0.18 0.340 2.51 0.21 0.394 2.55 0.22 0.469 2.49 0.24 0.545 2.50 0.24 0.640 2.49 0.25 0.943 2.4 4 0.27 1.267 2.42 0.27 1.767 2.43 0.29 13333 6.5506 45.085 0.264 2.49 0.18 0.341 2.51 0.21 0.395 2.55 0.22 0.469 2.49 0.24 0.543 2.50 0.24 0.636 2.50 0.25 0.935 2.4 4 0.27 1.254 2.42 0.28 1.751 2.44 0.29 13555 6.5564 45.035 0.264 2.50 0.18 0.340 2.51 0.20 0.393 2.55 0.22 0.466 2.50 0.24 0.540 2.51 0.24 0.630 2.51 0.25 0.923 2.45 0.27 1.237 2.43 0.28 1.729 2.44 0.29 13777 6.5621 44.985 0.263 2.50 0.18 0.338 2.52 0.20 0.391 2.55 0.22 0.462 2.51 0.24 0.535 2.51 0.24 0.621 2.52 0.25 0.909 2.46 0.27 1.217 2.44 0.28 1.703 2.44 0.29 12890 6.6096 45.188 0.284 2.46 0.19 0.364 2.51 0.21 0.431 2.50 0.22 0.509 2.48 0.24 0.585 2.50 0.24 0.695 2.47 0.25 1.006 2.4 4 0.27 1.338 2.43 0.27 1.844 2.44 0.29 13112 6.6153 45.139 0.286 2.46 0.19 0.366 2.51 0.21 0.433 2.50 0.22 0.511 2.48 0.24 0.586 2.50 0.25 0.695 2.47 0.25 1.005 2.4 5 0.27 1.336 2.43 0.27 1.841 2.44 0.29 13334 6.621 45.089 0.288 2.46 0.19 0.367 2.51 0.21 0.434 2.50 0.22 0.511 2.49 0.24 0.586 2.51 0.25 0.694 2.48 0.25 1.001 2.45 0.27 1.332 2.43 0.27 1.835 2.44 0.29 13556 6.6268 45.039 0.288 2.46 0.19 0.367 2.51 0.21 0.433 2.51 0.22 0.510 2.49 0.24 0.584 2.51 0.25 0.691 2.48 0.25 0.996 2.4 5 0.27 1.325 2.44 0.28 1.828 2.44 0.29 13778 6.6325 44.989 0.288 2.46 0.19 0.366 2.52 0.21 0.430 2.51 0.22 0.507 2.50 0.24 0.580 2.51 0.25 0.686 2.49 0.25 0.989 2.4 5 0.27 1.318 2.44 0.28 1.819 2.44 0.29 14000 6.6383 44.939 0.286 2.47 0.19 0.363 2.52 0.21 0.426 2.52 0.22 0.502 2.50 0.24 0.576 2.52 0.24 0.679 2.49 0.25 0.981 2.4 5 0.27 1.307 2.44 0.28 1.807 2.44 0.29 14222 6.6439 44.889 0.284 2.47 0.19 0.360 2.53 0.21 0.421 2.53 0.22 0.497 2.50 0.24 0.570 2.52 0.24 0.671 2.50 0.25 0.970 2.4 5 0.27 1.294 2.44 0.28 1.792 2.44 0.29 12891 6.6803 45.192 0.306 2.43 0.20 0.389 2.50 0.21 0.467 2.47 0.23 0.544 2.49 0.23 0.625 2.50 0.25 0.736 2.47 0.26 1.049 2.4 6 0.27 1.374 2.46 0.28 1.875 2.46 0.29 10228 6.6826 45.794 0.283 2.42 0.20 0.364 2.46 0.22 0.430 2.46 0.24 0.505 2.44 0.25 0.577 2.48 0.26 0.679 2.48 0.26 0.992 2.4 3 0.27 1.335 2.38 0.28 1.924 2.30 0.30 13113 6.686 45.143 0.309 2.43 0.20 0.391 2.51 0.21 0.470 2.47 0.23 0.546 2.49 0.23 0.627 2.50 0.25 0.737 2.48 0.26 1.048 2.46 0.27 1.373 2.46 0.28 1.873 2.46 0.29

SpetPar

Period (s)

PG

A (

cm/s

2)

Response spectra

Smoothed spectra

Design spectra

Tolmezzo

Ml 0.8

Ml 1.3

Ml 2.0

Tolmezzo

Thank you for your attention.

Seismological Researcher

and Monitoring group

http://rtweb.units.it.

Giovanni Costa, Piero Falconer, Lorenzo Furlan, Antonella Gallo, Lara Tiberi, Blaž Vičič, Giuliana Zoppé

Documents

The Friuli Venezia Giulia accelerometric network RAF and ... · Authorities which make decisions immediately after a strong earthquake occurrence. During a strong earthquake, the