EARTHQUAKE MONITORING AND SEISMIC NETWORK OF REPUBLIC OF SRPSKA

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1 Пут бањалучког одреда бб, П.П. 147; тел/факс / , ; Сеизмологија Метеорологија и Хидрологија, тел/факс / ; , ЈИБ EARTHQUAKE MONITORING AND SEISMIC NETWORK OF REPUBLIC OF SRPSKA Vesna Šipka, Dejan Jarić Republic Hydrometeorological Institute of Republic of Srpska, Banja Luka

2 Republic Hydrometeorological Service of Republic of Srpska Sector of Meteorology Sector of Hydrology and Ecology Sector of Seismology Department of Observational Seismology Department of Instrumental and Engineering Seismology

3 Seismic monitoring of Republic of Srpska -development of modern seismic network- First seismic station in Banja Luka has been installed after earthquakes at 26. and 27.October 1969 Hydrometeorological Service in Banja Luka is established and responsible for seismic monitoring of the territory of Republika Srpska. First digital station installed in 2005 Real-time data transmission from 2007 First bb station installed 2009 in Banjaluka by INGV /MedNet Total 3 bb

4 Seismic network of Republic of Srpska Significant improvement during period through implementation of DETERMINE Project in Bosnia and Herzegovina with the Slovak AID agency Results: Installation of four new stations/digitizers Wave 24/ Improved coverage of the territory significantly Increased autonomy of seismic monitoring Increased accuracy of the EQ parameters Enabling to record smaller earthquakes Establishing an automatic data processing SC3..and Automatic SMS alert

5 KNYS PRIJ A051A MRAK A052A BLY DOB BLJ A050A MGRS SRKY HAPS RUDO NEVS KLINJ Seismic Network of Republic of Srpska AlpArray station SP station BB station TREB

6 KNYS MED BLY BOCA BIR1 SRKY HAPS Accelerometric Network of Republic of Srpska RHMZ station other station NEVS KLINJE VRBA

7 Seismic network of Republic of Srpska The most interesting part- seismic equipment Sensors SS1 / Kinemetriks LE3Dlite /Lennartz Electronics SM-2 / Russian S5S /Russian Willmore MK-II / Hillger Watts KS2000/Geotech STS2 Episensor FBA-EST Digitizers Q 330 Q730 K2 Wave 24 Lennartz M24 SMART 24 /Geotech Basalt

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9 Seismic network/monitoring of Republic of Srpska current state consists of seismic stations: BB-3, SP-9 / 2 incomplete horizontal seismometers All sites with internet connection (3-3G, 7-ADSL, 1 leased line) Real time data transmission is provided. Data acquisition and processing center in Banja Luka Real time data exchange with all neighboring countries Runing SC3/automatic processing/sms alerting Seismic monitoring of dams Establishing accelerometric network / very slowly

10 BLZBLY DATA ACQUISITION, PROCESSING and PUBLISHING

11 AUTOMATIC PROCESSING SEISCOMP 3

12 MANUAL DATA PROCESSING Seismic Handler Providing manual processed data to EMSC from 2013 SORS- Seismological Observatory of Republic of Srpska

13 Publishing info about earthquakes web page

14 Problems we face Lack of money / our Government does not recognize us as important service / A small number of employees Equipment : old/ different manufacturers/ couses different solutions as well as different problems Inadequate sites / seismic stations located mainly in the vicinity of meteorological stations/

15 Future plans /while waiting for EQ Unification of seismic equipment? Improving quality of seismic sites? Increase coverage of the territory/ satisfying + 3 more BUT Establishing SM network Improve /better or cheaper/ real-time data transmission satellite internet connection on selected sites/ or use AlpArray experience?? Solving the issue of permanent storage of digital seismograms Establish back-up data center further from Banja Luka/seismic hazard Keep on with seismic monitoring of capital structures and increasing number of SM instruments

16 Thank you

17 AlpArray in Bosnia and Herzegovina Republic hydrometeorological institute of Republic of Srpska (1) Institute of Geophysics, ETH Zurich (2) Swiss Seismological Service, ETH Zurich (3) Vesna Šipka 1, Dejan Jarić 1, Saša Šikman 1, Irene Molinari 2, John Clinton 3, Edi Kissling 2

18 AlpArray in Bosnia and Herzegovina /Republic of Srpska /

19 A050A Klekovača 934 m - Free field station really good site

20 A050A Klekovača Free field station The vault preparation

21 A050A Klekovača - Free field station Installation, November 26, 2015 T =-7 Celsius degree

22 A050A Noise performances Very LOW noise level HORIZONTAL VERTICAL

23 A051A Mrakovica 862 m really good, quiet site

24 A051A Mrakovica 862 m Government facility /Basement good/quiet /safe

25 A051A Noise performances Very LOW noise level HORIZONTAL VERTICAL

26 A052A Srbac Free field station Problems: near 2 rivers /aluvion BUT was the only secure location in this area

27 A052A Srbac Free field station

28 A052A Noise performances Noise level is quite high but the vertical component is still acceptable VERTICAL Sensor was moved 2 meters away for few months because of flood problem STS-2 masses not centered. Problem solved with remote recentering HORIZONTAL

29 Noise performance RS stations

30 Integration between AA station and Seismic Service using the AA stations for routine earthquake locations Extremelly useful especially location small EQ A052 M A051 A050

31 Integration between AA station and Seismic Service using the AA stations for routine earthquake locations Extremelly useful especially for EQ monitoring of the western part A052 A051 A050

32 Conclusion Three AlpArray stations improve our network geometry Real time AA data are including in our daily routine AlpArray sites AO50A and AO51 excellent All three sites will be turned on permanent when project activities finish These 3 stations also need maintaining /12+3

33 Thank you