1. THE NATIONAL STRONG MOTION NETWORK OF TURKEY EARTHQUAKE DEPARTMENT REPUBLIC OF TUKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT Ulubey Ceken,Eren Tepeugur, Turgay Kuru,, Aytac Apak, Derya Kokbudak, Vedat Ozsaraç, Selim Sezer and Cuneyt Sahin.

2. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT HISTORY OF STRONG MOTION NETWORK Once, all stations were analog as the then-available technology. After 1993, digital accelerometers were added to the Network. Today, thanks to the technology, data has been achieved real time and high quality due to increasing number of stations rapidly. The National Strong Motion Network of Turkey was established in 1973. SM Network in Turkey has been operated by «The Republic of Turkey, Prime Ministry, Disaster Emergency Management Presidency, Earthquake Department».

3. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT MAIN GOALS OF STRONG MOTION NETWORK

4. OVERVİEW  The SM Network consist of 387 strong-motion observation stations with spacing of 50 km.  There are 5 different model digital accelerometers in the network. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT

5. The accelerometers are generally installed on the North Anatolian Fault System (NAFS), East Anatolian Fault System (EAFS) and Aegean Graben System where the big earthquakes occurred or the expected active areas. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT OVERVİEW

6. LOCAL NETWORKS Local networks are established with specific geometrical arrays on active fault systems in order to observe seismic activity closely. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT

7. An Example of local networks: IZMIR-NET established by the context of “Modelling Of Seismic Site Response For Earthquake Resistant Structural Design in İzmir Metropolitan Area and Aliağa-Menemen Districts” Project REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT LOCAL NETWORKS

8. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT ACCELEROMETER STATIONS While installing,  Active tectonic lines,  Population of cities and the density of building,  Different geological structures,  Energy lines,  Communication,  Security,  Environmental noise,  Transportation etc. conditions are considered. The instruments are located in governmental buildings area owing to being safety and ease of maintenance. These instruments are installed in the containers as free fields.

9.  Base-concrete of containers is (220cmx220cmx30cm)  The middle-concrete that accelerometers are mounted is (40cmx40cm x60cm)  Half of middle-concrete is on the ground and the other half is under the ground.  There is 20cm space between base and the middle- concrete. Space between them is full of mixture of sand-grovel. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT

10. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT SITE INVESTIGETIONS The local site conditions of stations were obtained by in-situ geotechnical and geophysical surveys. V S30 measurements with MASW profile (100 m) Borehole (30m)

11. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT The average of shear-wave velocity for upper 30m soil layer (V S30 ) is obtained at the each strong-motion site thanks to multi-channel analysis of surface waves (MASW), which is used for defining of soil classification.

12. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT Concerned researcher can provide « Station Information Form» over the Internet through this search engine.

13. COMMUNICATION  Data is transmited to the central office as continuous or trigger mode with communication instruments (Dial-up, Internet, ADSL, GPRS/EDGE).  Data is submitted to users through main server after process. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT

14. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT TYPES of ACCELEROMETER There are 5 digital different type of accelerometers in the network. All of them have three component acceleration sensors. QDR, modified from SMA-1, has 12 bits resolution. SMACH has 72 dB sensitivity and 12 bits digital converter.

15. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT GSR type accelerometers have 16 and 18 bits digital converter. ETNA type records have 18 bits resolution. CMG-5TD is an integrated DM-24 high resolution digitizer. TYPES of ACCELEROMETER

16. DATA CENTER MAIN SERVERDATA CENTER The data management center is located in Ankara. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT

17. Elastic spectral parameters of all records was also determined for researchers by using the same filter method. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT Within the framework of the project entitled “Compilation of The National Strong Motion Network Database According to International Standart“, 3000 events and 4600 raw accelerometric data (between 1976 and 2007) is prosessed uniformly with a consistent methodology through the software called USDP (Utility Software for Data Processing). Windows-based software (USDP) was developed during the project for the filter process (Akkar and Bommer, 2006) of records in the database. DATA PROCESS

18. DATA FORMAT REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT It is possible to be reached to all of accelerograms for researcher since the establishment of Turkish National Strong Motion (1973). An example of file names is Date(yyyymmdd)+time(hhmmss )+ abbreviation of the station (1201)(ex.20030501002704_1201). All data are ASCII format as seen figure.

19. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT  In the header information there are three components of acceleration data like; N-S (North-South), E-W (East-West) and U-D (up-down).  Until now, There have been about 7600 acceleration records, which are presented via Internet to all researchers and scientific areas.  Sample intervals for each records can be found beneath the header "SAMPLE INTERVAL".  Set-off correction process is applied for untreated data. Unit of all acceleration data is cm/sn 2 (gal). DATA FORMAT

20. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT Enhancement of the National Strong Motion Network and Establishing Seismic Arrays in Turkey (Nato Science For Peace Program – Sfp977484) "BYTNet and DATNet"" Establishment of Local Strong Motion Seismic Array (TUBITAK ICTAG-1578/YMAU ) "MATNet" Establishment of Local Strong Motion Seismic Array (Project Number: 040302) "ANANet" Compilation of The National Strong Motion Network Database According to International Standart (TUBITAK Project Number :105G016 ) Modelling Of Seismic Site Response For Earthquake Resistant Structural Design In İzmir Metropolitan Area And Aliağa-Menemen Districts TUBITAK-KAMAG Project (No: 106G159) PROJECTS

21. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT WEB PAGE User Interfaces If earthquake point on the map is clicked, event page opens Web Page of our system is http://kyh.deprem.gov.tr Daily strong motion records, Earthquake Reports ( M  4), Station Information and their maps are always up to date. Detailed Special Reports are also published after the destructive earthquake occurred.

22. Users can provide by using search engine about the station or earthquake information and then they can download the Raw Data. Users can find data from a particular station by going to the station pages WEB PAGE REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT Users can download all data easly

23. REPUBLIC OF TURKEY PRIME MINISTRY DISASTER AND EMERGENCY MANAGEMENT PRESIDENCY EARTHQUAKE DEPARTMENT  At the beginning of 2013, it is aimed to have 450 stations in the network. Furthermore, total station number will be 1000 until 2023.  To increase the number of local or regional array,  To implement shake and intensity maps,  Strong-motion indexes such as real-time intensity, acceleration, velocity, displacement, and response spectra are continuously and automatically to be calculated to utilize for seismic hazard analysis  To review processed accelerograms in order to produce data being uniform and NGA standards  To develop attenuation relationships at the regional and country scale,  Local geology and Vs profile of all stations will be completed.  At the beginning of 2013, it is aimed to have 450 stations in the network. Furthermore, total station number will be 1000 until 2023.  To increase the number of local or regional array,  To implement shake and intensity maps,  Strong-motion indexes such as real-time intensity, acceleration, velocity, displacement, and response spectra are continuously and automatically to be calculated to utilize for seismic hazard analysis  To review processed accelerograms in order to produce data being uniform and NGA standards  To develop attenuation relationships at the regional and country scale,  Local geology and Vs profile of all stations will be completed. TARGETS

24. Thank You ！ A view of İstanbul