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

DIGITAL SEISMIC NETWORKDIGITAL SEISMIC NETWORKOFOF

UZBEKISTANUZBEKISTAN

Ilkhom AlimukhamedovIlkhom Alimukhamedov

Institute of seismologyInstitute of seismologyAcademy of SciencesAcademy of Sciences

Seismological Institute of UzbekistanSeismological Institute of Uzbekistan

Seismological Institute of the Academy of Sciences republic Seismological Institute of the Academy of Sciences republic Uzbekistan was established on October 1, 1966 soon after Uzbekistan was established on October 1, 1966 soon after the destructive Tashkent earthquake on April 26, 1966. the destructive Tashkent earthquake on April 26, 1966.

The major scientific objective of the Institute isThe major scientific objective of the Institute isseismic zonation, estimation of seismic hazard and risk,seismic zonation, estimation of seismic hazard and risk,long-term earthquake prediction. 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, 1901.

In 1912 the station was equipped with new electromagnetic seismographs created by B.B.Golitsyn.

The first seismic station in Uzbekistan, May 1901.The first seismic station in Uzbekistan, May 1901.

GrantsGrants

In 2004 Uzbekistan seismologists had a grant from China government and 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 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.broadband system EDAS-24) were installed around Tashkent city.

In 2006 within the framework of grant STCU #3394 the equipment was 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 acquired and installation of 18 digital seismic stations on all the territory of Uzbekistan is made. Uzbekistan is made.

The structure of the complete set includes four-channel 16-digit data The structure of the complete set includes four-channel 16-digit data logger "Webtronics", GPS-receiver " Garmin ", 4 photo-electric solar panels, logger "Webtronics", GPS-receiver " Garmin ", 4 photo-electric solar panels, the controller of a charge of accumulators, UPS “ NOVA 600AVR ” and the controller of a charge of accumulators, UPS “ NOVA 600AVR ” and industrial computer EBS-1363.industrial computer EBS-1363.

An event files format - SAC, PSN-4 or MiniSEED.An event files format - SAC, PSN-4 or MiniSEED.

Operating seismic stations

Digitizer Digitizer WebtronicsWebtronics

Industrial PCIndustrial PC EBS-1363-1EBS-1363-1

UPSUPS and batteryand batterySolar panelsSolar panels

Set of equipment on site Set of equipment on site ChimionChimion

Set of equipment on site Set of equipment on site NurataNurata

Data transmissionData transmission

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

Digital seismic network of Uzbekistan http://isas.uzsci.netDigital seismic network of Uzbekistan http://isas.uzsci.net

The web-site of the urgent reports service of the Institute of The web-site of the urgent reports service of the Institute of seismology - seismology - http://isas.uzsci.nethttp://isas.uzsci.net is created, where the information is created, where the information on a location and definition of the initial parameters of the on a location and definition of the initial parameters of the earthquakes are take place, registered by a network of seismic earthquakes are take place, registered by a network of seismic monitoring. monitoring.

Seiscomp3 Seiscomp3 opening ceremonyopening ceremony

In processIn process

Seismometers:Seismometers:Guralp CMG6TDGuralp CMG6TD -10-10

CM3-KVCM3-KV -35 sets (Russia)-35 sets (Russia)

PMDPMD -3-3

AccelerometersAccelerometers

Guralp MEMS 5T Guralp MEMS 5T - 35- 35

Planned seismic stations

The digital seismic monitoring system of the territory of The digital seismic monitoring system of the territory of Uzbekistan will answer to the following requirements:Uzbekistan will answer to the following requirements:

1. 1. The full covering of the territory by digital system of The full covering of the territory by digital system of monitoring with registration of seismic events up to M≥1,5.monitoring with registration of seismic events up to M≥1,5.

2. 2. Data transmission to the center of processing in a Data transmission to the center of processing in a continuous mode or sending seismic event files.continuous mode or sending seismic event files.

3. 3. Creation of an array from 8 broadband stations for Creation of an array from 8 broadband stations for an automatic location of the teleseismic events.an automatic location of the teleseismic events.

4. 4. The automatic location of earthquakes and The automatic location of earthquakes and definition of their key parameters, and also automatic definition of their key parameters, and also automatic construction of the moment tensors.construction of the moment tensors.

5. 5. Creation of the uniform system allows continuously Creation of the uniform system allows continuously control the serviceability of local stations and quality of the control the serviceability of local stations and quality of the receiving information.receiving information.

To the end of 2012 the digital seismic stations network To the end of 2012 the digital seismic stations network of the Republic of Uzbekistan will consist of 48 stations.of the Republic of Uzbekistan will consist of 48 stations.