Infrasound station IS31-Aktyubinsk

Aktyubinsk infrasound station was built in 2001 and according to the Protocol to the Comprehnesive Nuclear test Ban Treaty it is a part of International Monitoring System. It is located in North-West of Kazakhstan near Aktobe town.
The station is equipped with MB2000 microbarometers, connected to wind noise reducing systems (high frequency, low frequency).
The construction and installation of equipment were performed by joint efforts of CTBTO and IGR NNC RK and were completed in year 2001.
During 2001 - 2002 Aktyubinsk infrasound array operateid in testing mode.

This figure shows the configuration of Aktyubinsk infrasound array, and the table below lists the coordinates of all elements of the array. IS31 array is a traingle with sides of about 2 km, with L2-L4 elements in the nodes and L1 central point surrounded by additional high frequency array (H1-H4), set up as a square with 200 m side. The data registered by the station is sent in real time mode to the International Data Center, Vienna and from IDC to Data Center IGR NNC RK, Almaty, also in real time mode.