NATIONAL SEISMIC NETWORKS OF TURKEY

Transcription

1 Ministry of Public Works and Settlement General Directorate of Disaster Affairs EARTHQUAKE RESEARCH DEPARMENT (GDDA- ERD) NATIONAL SEISMIC NETWORKS OF TURKEY RELEMR WORKSHOP İSTANBUL Sami ZÜNBÜL and Yıldız IRAVUL

2 NATIONAL WEAK GROUND MOTION NATIONAL WEAK GROUND MOTION National Strong Ground Motion and Weak Ground Motion networks have been operated by The Ministry of Public Works and Settlement, General Directorate of Disaster Affairs, Earthquake Research Department, Ankara NATIONAL STRONG GROUND MOTION NATIONAL STRONG GROUND MOTION Total #137 Total #209

3 Developments of Turkish National Seismic networks through time Weak Ground Motion Strong Ground Motion Planing

4 National Strong Motion Network At present, the number of stations is 209. At the end of 2008, we are planning to increase the number of stations to 270.

5 National Weak Motion Network

6 National Weak Motion Network At present, the number of stations is 137. We are going to install 3 more stations along NAFZ. Broad-band Station (58) sec of CMG 3TD Very Broad-band Station (1)GSL ANTO (USGS-IRIS) sec of Geotech KS-3600 Local Network- Broad-band Station (59) sec of CMG 3TD 3- Component Short Period (7) - 1 sec of Geotech S13J and CMG-DM24MK3 Digitizer 1- Component Short Period (12) - 1 sec of Geotech S13 CMG-DM16R8 ADC card

7 Stations and Instrumentations

8 Earthquake Watching System by Earthworm 2. STEP Earthworm runs and determines rapidly earthquake location. 1. STEP Scream sends data to Earthworm. 3. STEP This program shows earthquake location on the map and gives its information.

9 Network and System All seismic data has been observed 24 hours continuously and issued immediately the center of Seismology Division (

10 TURDEP THE RESEARCH PROJECT ON THE EARTHQUAKE BEHAVIOR OF THE REGIONS WITH HIGH SEISMIC RISK (GEO-STRATEGIC) BUT DIFFERENT TECTONIC REGIMES BY A MULTIDISCIPLINARY APPROACH For earthquake hazard reduction, it is aimed to observe earthquake activity and earthquake precursors by multidisciplinary studies related to the three main fault zones in our country and to introduce the earthquake hazard seriously in the regions under risk. Thus, a data base information will be obtained for a disaster management system in the international standards. 14 universities participate in this project which is supported by Tubitak- Marmara Research Center.

11 DEPAR IMMEDIATE OBSERVATION AND INVESTIGATIONS AFTER EARTHQUAKE GDDA-TUBITAK MARMARA RESEARCH CENTER AIM: For the cases which affect the settled areas in our country and given below: Earthquakes with magnitudes equal to or greater than 6.0 and cause loss of lives and damage, Earthquakes with magnitudes smaller than 6.0 and occur often in the same region which is called earthquake swarm and cause inconvenience in public as an unusual situation, To investigate the reasons of the damages in the buildings caused by the ground conditions after the earthquake, to determine the characteristics and behavior of earthquakes delicately, to constitute necessary measurements for the epicentral determination of the destructive aftershocks and immediate earthquake observation, to inform the authorities and public about the preliminary determinations and results Research Group (DEPAR) consists of four subgroups; Group for Earthquake Seismology Group for GPS Deformation Group for Accelerometers Group for Remote Sensing and Geological Mapping.

12 DEPAR Project BALA Earthquake Aftershock observation stations (Dec. 21, 2007)

13 BALA Earthquake Aftershock distributions (Dec. 20, Feb. 28 Şubat, 2008)

14 Our Aim and Plans Seismicity of Turkey (M>4.0, ) To develop our present network for quick and correct determination of the epicentral parameters of earthquakes with M>3.0, To complete basic facilities for the waveform data exchange with the seismological Data Centers.

15 Thank you.