EARTHQUAKE DEPARTMENT
THE NATIONAL STRONG MOTION
NETWORK OF TURKEY
Ulubey Ceken ,Eren Tepeugur, Turgay Kuru,, Aytac Apak,
Derya Kokbudak, Vedat Ozsaraç, Selim Sezer and Cuneyt
Sahin.
REPUBLIC OF TUKEY
PRIME MINISTRY
DISASTER AND EMERGENCY MANAGEMENT
PRESIDENCY
EARTHQUAKE DEPARTMENT
HISTORY OF STRONG MOTION NETWORK
The National Strong Motion Network
of Turkey was established in 1973.
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.
SM Network in Turkey
operated by «The Republic
Prime Ministry, Disaster
Management Presidency,
Department» .
has been
of Turkey,
Emergency
Earthquake
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
MAIN GOALS OF STRONG MOTION NETWORK
Strong ground motion observations, determine the forces led to damage
To provide basic data for earthquake zoning map, hazard and risk working
To provide data for engineering seismology and earthquake engineering
researches
To contribute for emergency management and early warning studies
To contribute for safe building and safe settlement working
Earthquake mitigation studies
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
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.
387
400
NUMBER OF STATION
350
300
323
271
300
SM-2, 13,
4%
235
250
205
200
150
100
116
QDR, 23,
6%
GSR, 28,
7%
ETNA,
35, 9%
132
67
50
0
1973 2000 2003 2007 2008 2009 2010 2011 2012
YEARS
CMG5TD, 287,
74%
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
OVERVİEW
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
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
LOCAL NETWORKS
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
ACCELEROMETER STATIONS
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.
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.
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
Base-concrete
of
(220cmx220cmx30cm)
containers
is
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
SITE INVESTIGETIONS
The local site conditions of stations were obtained by in-situ geotechnical
and geophysical surveys.
Borehole (30m)
VS30 measurements with MASW profile
(100 m)
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
The average of shear-wave velocity for upper 30m soil layer (VS30) 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.
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 .
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
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
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.
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
TYPES of ACCELEROMETER
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.
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
DATA CENTER
The data management center is located in Ankara.
MAIN SERVER
DATA CENTER
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
DATA PROCESS
Windows-based software (USDP) was
developed during the project for the filter
Within the framework of the process (Akkar and Bommer, 2006) of
project entitled “Compilation of records in the database.
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) .
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
DATA FORMAT
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.
All data are ASCII format as seen figure.
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
DATA FORMAT
 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).
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/sn2 (gal).
 Until now, There have been about 7600 acceleration records, which are
presented via Internet to all researchers and scientific areas.
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
PROJECTS
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)
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
WEB PAGE
Web Page of our system
http://kyh.deprem.gov.tr
is
Daily
strong
motion
records,
Earthquake Reports ( M4), Station
Information and their maps are
always up to date.
If earthquake point on the map
is clicked, event page opens
User Interfaces
Detailed Special Reports are also
published
after
the
destructive
earthquake occurred.
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
WEB PAGE
Users can provide by using
search engine about the station
or earthquake information and
then they can download the
Raw Data.
Users can
download all
data easly
Users can find
data from a
particular
station by
going to the
station pages
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
TARGETS
 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.
REPUBLIC OF TURKEY
PRIME MINISTRY
DISASTER AND EMERGENCY
MANAGEMENT PRESIDENCY
EARTHQUAKE DEPARTMENT
Thank You ！
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