Kandilli Observatory and Earthquake Kandilli Observatory and Earthquake Research Institute Research Institute Department of Earthquake Engineering Department of Earthquake Engineering Boğaziçi Boğaziçi University, Istanbul University, Istanbul ISTANBUL ISTANBUL TEST TEST SITE SITE SAFER Final Meeting, GFZ, Potsdam June 3-5 2009
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Kandilli Observatory and Earthquake Research Institute Department of Earthquake Engineering Boğaziçi University, Istanbul ISTANBUL TEST SITE SAFER Final.
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Kandilli Observatory and Earthquake Research InstituteKandilli Observatory and Earthquake Research InstituteDepartment of Earthquake Engineering Department of Earthquake Engineering
Boğaziçi University, Istanbul Boğaziçi University, Istanbul
ISTANBUL ISTANBUL TEST SITETEST SITE
SAFER Final Meeting, GFZ, PotsdamJune 3-5 2009
SAFER Project, Test Site IstanbulSAFER Project, Test Site Istanbul
• Istanbul Earthquake Rapid Response SystemIstanbul Earthquake Rapid Response System • Istanbul Earthquake Early Warning SystemIstanbul Earthquake Early Warning System • Istanbul, AtakoyIstanbul, Atakoy District SOSEWIN (Self-Organizing Seismic Early District SOSEWIN (Self-Organizing Seismic Early Warning Information Network) SystemWarning Information Network) System
• Istanbul Structural Monitoring NetworksIstanbul Structural Monitoring Networks
• Shake and Los Mapping Shake and Los Mapping
ISTANBUL EARTHQUAKE ISTANBUL EARTHQUAKE EARLY WARNING SYSTEMEARLY WARNING SYSTEM
The Early Warning part of The Early Warning part of the I-NET 10+2 strong the I-NET 10+2 strong motion stations were motion stations were located as close as located as close as possible to the Great possible to the Great Marmara Fault zone in “on-Marmara Fault zone in “on-line” mode. line” mode.
Data Transmission is Data Transmission is provided with Spread provided with Spread Spectrum Radio Modem Spectrum Radio Modem and Satellite. and Satellite.
The continuous on-line The continuous on-line data from these stations is data from these stations is used to provide real time used to provide real time warning for emerging warning for emerging potentially disastrous potentially disastrous earthquakes. earthquakes.
DISTRIBUTION OF EARLY WARNING STATIONS and RADIO-MODEM DISTRIBUTION OF EARLY WARNING STATIONS and RADIO-MODEM TRANSMISSIONTRANSMISSION
Satellite Connection
REAL-TIME STRUCTURAL DAMAGE RELATED PARAMETERSREAL-TIME STRUCTURAL DAMAGE RELATED PARAMETERS Many researchers have investigated the relationships between the earthquake damage and the
ground motion parameters such as peak ground motion amplitudes, spectral amplitudes at selected periods.
Arias Intensity, Cumulative Absolute Velocity and Housner’s Spectrum Intensity.
Nakamura (2004) defined the so-called “Destructive Intensity, DI”, represented by the logarithm of the absolute value of the inner product of the acceleration and a velocity vectors:
DI = log (|Σ(a.v)|), MMI=(11/7)*DI + 4.27
BCAV – Window Length=1s
BCAV – W (Window Length=8s)
Correlation between CAV and computed seismic intensity
(Computed Seismic Intensities are obtained from the FAS of simulated accelerograms using Sokolov (2002))
Early Warning times from 280 simulated earthquakes
EEWEEWFAST TRAIN AND FAST TRAIN AND TUBE TUNNELTUBE TUNNEL
IGDAIGDAŞ ServiŞ Service Networkce NetworkEarthquake MonıtorıngEarthquake Monıtorıng
BOĞAZİÇİ DISTRICT DIRECTORY
ANADOLU DISTRICT DIRECTORYİSTANBUL DISTRICT DIRECTORY
ELECTRELECTRIIC POWER C POWER DDIISTRSTRIIBUTBUTIION SYSTEMON SYSTEM
Potential Uses of EW Potential Uses of EW in Istanbulin Istanbul
HEAVY INDUSTRYHEAVY INDUSTRY
ISTANBUL ISTANBUL EARTHQUAKE EARTHQUAKE
RAPID RAPID RESPONSE RESPONSE
SYSTEM SYSTEM STATIONSSTATIONS
KOERI IEWRRS 100 Station +
İGDAŞ (Istanbul Gas Company) 100 Station
Expansion by the end of 2009Expansion by the end of 2009
After triggered by an earthquake, each station processes the streaming three-After triggered by an earthquake, each station processes the streaming three-channel strong motion data to yield the Spectral accelerations at specific periods, channel strong motion data to yield the Spectral accelerations at specific periods, 12Hz filtered PGA and PGV and sends these parameters in the form of SMS 12Hz filtered PGA and PGV and sends these parameters in the form of SMS messages at every 20s directly to the main data center through the messages at every 20s directly to the main data center through the AVEA - AVEA - GSM GSM communication system by using several base stations, microwave system and communication system by using several base stations, microwave system and landlines.landlines.
Spectral displacements obtained from the SMS messages sent from stations are Spectral displacements obtained from the SMS messages sent from stations are interpolated to determine the spectral displacement values at the center of each interpolated to determine the spectral displacement values at the center of each geo-cell (0.01geo-cell (0.01 x 0.01 x 0.01).).
The seismic demand at the center of each geo-cell is computed using these The seismic demand at the center of each geo-cell is computed using these spectral displacements. spectral displacements.
Using the capacities of the buildings (24 types) in each geo-cell the building Using the capacities of the buildings (24 types) in each geo-cell the building damage is computed by using the spectral-displacement based fragility curves damage is computed by using the spectral-displacement based fragility curves ((Capacity SpectrumCapacity Spectrum Procedure). Procedure).
Capacity Capacity SpectrumSpectrum-type -type
Building Building Damage Damage
AssessmentAssessment
LocationLocation o of f earthquakes earthquakes recorded by the recorded by the systemsystem
Information on recorded Earthquakes
Sept. 29, 2004 Marmara Sea Earthquake (M4) ShakeMap (Cambell and Sept. 29, 2004 Marmara Sea Earthquake (M4) ShakeMap (Cambell and Bozorognia, 2008) with no consideration of instrumental data and site responseBozorognia, 2008) with no consideration of instrumental data and site response
Empirical Data Empirical Data IncorporatedIncorporated
(Bias (Bias adjustment at adjustment at surface)surface)
Empirical Empirical Data and Data and Site Site Response Response IncorporatedIncorporated
March 12 2008 March 12 2008 EarthquakeEarthquake
Shake and Loss MapShake and Loss Map
Communication of Rapid Communication of Rapid Response Message Response Message
(Damage Maps)(Damage Maps)
(Mobile phones and PDA’s)(Mobile phones and PDA’s)
Municipality
Governorate
1st Army
NUMBER OF COLLAPSED BUILDINGS PER CELL (Simulated from random data and communicated to end users every day at 10am)
WLAN
Classical Seismological Station
Central Side:A normal NodeVisualizationBackup, Monitoring
DSL
City
The development of a new seismic network for earthquake early warning (EEW), made up of low-cost sensors that will eventually be purchasable by a range of end users, giving very dense urban networks
The Seismological SOSEWIN will complement existing EEW networks.
Gateways (Internet)
Public NodeLow Cost Node
Ref: Picozzi et. al.
Istanbul, AtakoyIstanbul, Atakoy District SOSEWIN (Self-Organizing District SOSEWIN (Self-Organizing Seismic Early Warning Information Network) SystemSeismic Early Warning Information Network) System
Level 1 - Methodology based on EMS98 Vulnerability Classes
D3: Substantial to heavy damage
Level 1 – Casualty Estimation
Koeri,2002
Coburn&Spence
Case Study for 1999 M6 Athens EarthquakeLevel 0 and Level 1
1999 Athens EarthquakeEstimated Intensity Distribution
The 7 September 1999 M6 Athens earthquake
In total 143 people were killed, 1600 people were injured and at least 53,000 buildings were reported to be damaged by this earthquake.
Case Study for 1999 M6 Athens EarthquakeLevel 1 Building Damage and Casualty Estimation
Estimated Number of Damaged Buildings (3080 buildings in Damage States D3 + D4 + D5)
Case Study for 1999 M6 Athens EarthquakeLevel 1 Building Damage and Casualty Estimation
Estimated Number of Deaths (Total: 236 people)
Stations Data From: http://earthquake.rm.ingv.it/shakemap/shake/2206496920/intensity.htmlFault Data From: http://www.emsc-csem.org/index.php?page=current =⊂ recent&evt=20090406_ITALY )
RC4 RC Dual systems (RC frame and wall) - 0.02 0.386 0.86RC5 Precast Concrete Tilt- Up Walls 0.14 0.384 0.7RC6 Precast C. Frames, C. shear walls 0.3 0.544 0.86S1 Steel Moment Frames - 0.02 0.363 0.86S2 Steel braced Frames - 0.02 0.287 0.7S3 Steel frame+unreinf. mas. infill walls 0.14 0.484 0.86S4 Steel frame+cast- in- place shear walls - 0.02 0.224 0.54S5 Steel and RC composite system - 0.02 0.402 1.02W Wood structures 0.14 0.447 0.86
Vulnerability Index
RISK-UEBuilding Typology Matrix
Model Building Types of HAZUS-1999
EARTHQUAKE LOSS ESTIMATION FOR ISTANBUL
The "Credible Worst Case" Scenario event:
An Mw=7.5 (similar to 1999 Kocaeli Earthquake in magnitude and in total rupture length) which is assumed to take place on the fault segments 5, 6, 7 and 8.