Kazakhstan National monitoring system of nuclear explosions and

							    Institute of Geophysical Research of the National Nuclear Center of RK




Kazakhstan National monitoring system of
   nuclear explosions and earthquakes

                        Mikhailova N.N., Sokolova I.N.
Institute of Geophysical Researches of the National Nuclear Center of the
                Republic of Kazakhstan, Kurchatov – Almaty

www.kndc.kz
     Institute of Geophysical Research of the National Nuclear Center of RK




The last decade in Kazakhstan was marked by creation of the new modern
monitoring system for nuclear explosions and earthquakes. This monitoring
system was created in Kazakhstan National Nuclear Center (NNC RK). Data of
this system are used in solving the tasks of global monitoring of nuclear
explosions and earthquakes. Data are transferred to International Centers to
compile seismic bulletins (REB, ISC, EMSC) and are available to researches from
different countries via IRIS/DMC; also, data of this system are used in tasks of
Republic system of seismic observations.


•   The system includes:
•   seismic monitoring stations network;
•   infrasound monitoring stations;
•   Kazakhstan National Data Center in Almaty (KNDC);
•   Stations communication system with National and International Data
    Centers
    Institute of Geophysical Research of the National Nuclear Center of RK




Figure 1. The map of seismic and infrasound NNC RK stations location (8 seismic arrays, 5
three component seismic stations, 3 infrasound arrays).
       Institute of Geophysical Research of the National Nuclear Center of RK




The main feature of the seismic monitoring system is:

-the major part of the stations is seismic arrays;

-all stations are digital;

-stations are located mainly throughout the perimeter of Kazakhstan
territory;

-due to careful geological site selection for stations construction and with
relation to seismic noise characteristics, good arrays configuration, and
combination of broadband and short-period instruments, all stations are
high sensitive to both regional and teleseismic events.

All these features allow to use the system successfully within National and
International monitoring.
   Institute of Geophysical Research of the National Nuclear Center of RK



The models of daytime seismic noise by data of NNC RK network stations
                       and world noise models.
   Institute of Geophysical Research of the National Nuclear Center of RK



Center for Acquisition and Processing of the special Seismic

                                 Information (Almaty)

The main tasks of the Center are:

• Acquisition and transmission of data from NNC
  RK network stations;
• Processing of arriving seismic and infrasound
  data;
• Storage and data exchange with other National
  and international Centers;
• Conducting of scientific researches in support of
  monitoring.
Institute of Geophysical Research of the National Nuclear Center of RK




Communication scheme of Data Center in Almaty and
               observation stations
      Institute of Geophysical Research of the National Nuclear Center of RK



Kazakhstan Data Center conducts active data exchange with many scientific
Organizations of Kazakhstan and the whole world.

Data exchange is conducted with the following Organizations:

Origin data in real time are transferred to IDC (Vienna), USA NDC (Florida,
USA), IRIS (USA).

Automatic seismological bulletin – EMSC (France).

Interactive bulletin – ISC (England).

Summary bulletin – Institute of Seismology of Kazakhstan.

Reports on large teleseismic events – GS RAS (Obninsk).

SEED-volumes –IRIS/DMC

KNDC data are transferred to NORSAR (Norway), to SEA/DASE on demand.
     Institute of Geophysical Research of the National Nuclear Center of RK




      Data Center creates the following products:

• Automatic seismological bulletin (represented on the web-site);

• Online interactive bulletin (is represented on the web-site);

• Joint online seismological bulletin (data of SEME MES RK and
  IGR NNC RK) (is available on the web-site for special users);

• Catalogues of earthquakes and explosions (after discrimination
  of source nature).

• Automatic bulletin of infrasound events
      Institute of Geophysical Research of the National Nuclear Center of RK




                                             Conclusion

The modern stations system of seismic and infrasound monitoring was created in
   Kazakhstan for a short period under the auspices and active participation of
   International Organizations.

Data of this system are used in tasks of Republican seismic observation system.
   Processing results are transferred to SEME MES to be used during creation of
   earthquakes catalogues and source mechanisms, and finally to precise the
   maps of seismic zoning and earthquake prediction.


Data of this system are used for the tasks of nuclear explosions and earthquakes
   global monitoring. Data are transferred to International Centers to create
   world seismic bulletins (REB, ISC, EMSC) and to carry out scientific
   investigations by researchers from different countries

.