DIGITAL SEISMIC NETWORK OF UZBEKISTAN Ilkhom Alimukhamedov Institute of seismology Academy of Sciences

Seismological Institute of Uzbekistan Seismological Institute of the Academy of Sciences republic Uzbekistan was established on October 1, 1966 soon after the destructive Tashkent earthquake on April 26, The major scientific objective of the Institute is seismic zonation, estimation of seismic hazard and risk, long-term earthquake prediction.

In 1900, building of an underground foundation for seismic equipment begins, wherein horizontal pendulums of Repsold-Tselner was established and regular seismometric observation begin from May, In 1912 the station was equipped with new electromagnetic seismographs created by B.B.Golitsyn. The first seismic station in Uzbekistan, May 1901.

Grants In 2004 Uzbekistan seismologists had a grant from China government and 5 seismic stations (3 set of short-period system EDAS-3 and 2 set of the broadband system EDAS-24) were installed around Tashkent city. In 2004 Uzbekistan seismologists had a grant from China government and 5 seismic stations (3 set of short-period system EDAS-3 and 2 set of the broadband system EDAS-24) were installed around Tashkent city. In 2006 within the framework of grant STCU #3394 the equipment was acquired and installation of 18 digital seismic stations on all the territory of Uzbekistan is made. In 2006 within the framework of grant STCU #3394 the equipment was acquired and installation of 18 digital seismic stations on all the territory of Uzbekistan is made. The structure of the complete set includes four-channel 16-digit data logger "Webtronics", GPS-receiver " Garmin ", 4 photo-electric solar panels, the controller of a charge of accumulators, UPS “ NOVA 600AVR ” and industrial computer EBS The structure of the complete set includes four-channel 16-digit data logger "Webtronics", GPS-receiver " Garmin ", 4 photo-electric solar panels, the controller of a charge of accumulators, UPS “ NOVA 600AVR ” and industrial computer EBS An event files format - SAC, PSN-4 or MiniSEED. An event files format - SAC, PSN-4 or MiniSEED.

Operating seismic stations

Digitizer Webtronics Industrial PC EBS UPS and battery Solar panels

Set of equipment on site Chimion Set of equipment on site Nurata

Data transmission Number of stations (Tashkent, Andizhan, Fergana, Namangan, Mingtut, Samarkand, Khiva, Karshi) are connected by ADSL. The event files are automatically sending to FTP-server located in the Tashkent seismic observatory. From other seismic stations the event files are sending to server by dial-up after the operation of trigger. The WinQuake program is applied for summary processing. Number of stations (Tashkent, Andizhan, Fergana, Namangan, Mingtut, Samarkand, Khiva, Karshi) are connected by ADSL. The event files are automatically sending to FTP-server located in the Tashkent seismic observatory. From other seismic stations the event files are sending to server by dial-up after the operation of trigger. The WinQuake program is applied for summary processing.

Digital seismic network of Uzbekistan The web-site of the urgent reports service of the Institute of seismology - is created, where the information on a location and definition of the initial parameters of the earthquakes are take place, registered by a network of seismic monitoring. The web-site of the urgent reports service of the Institute of seismology - is created, where the information on a location and definition of the initial parameters of the earthquakes are take place, registered by a network of seismic monitoring.

Seiscomp3 opening ceremony

In process Seismometers: Guralp CMG6TD-10 CM3-KV-35 sets (Russia) PMD-3 Accelerometers Guralp MEMS 5T - 35 Guralp MEMS 5T - 35

Planned seismic stations

The digital seismic monitoring system of the territory of Uzbekistan will answer to the following requirements: 1. The full covering of the territory by digital system of monitoring with registration of seismic events up to M≥1,5. 1. The full covering of the territory by digital system of monitoring with registration of seismic events up to M≥1,5. 2. Data transmission to the center of processing in a continuous mode or sending seismic event files. 2. Data transmission to the center of processing in a continuous mode or sending seismic event files. 3. Creation of an array from 8 broadband stations for an automatic location of the teleseismic events. 3. Creation of an array from 8 broadband stations for an automatic location of the teleseismic events. 4. The automatic location of earthquakes and definition of their key parameters, and also automatic construction of the moment tensors. 4. The automatic location of earthquakes and definition of their key parameters, and also automatic construction of the moment tensors. 5. Creation of the uniform system allows continuously control the serviceability of local stations and quality of the receiving information. 5. Creation of the uniform system allows continuously control the serviceability of local stations and quality of the receiving information. To the end of 2012 the digital seismic stations network of the Republic of Uzbekistan will consist of 48 stations. To the end of 2012 the digital seismic stations network of the Republic of Uzbekistan will consist of 48 stations.