HR: 1340h
AN: S13C-1436    [Abstracts]
TI: Vrancea Earthquake Early Warning System Development in Romania
AU: * Constantin, I
EM: viorel@infp.ro
AF: National Institute for Earth Physics, Calugareni 12, Magurele, 077125, Romania
AU: Alexandru, M
EM: marmura@infp.ro
AF: National Institute for Earth Physics, Calugareni 12, Magurele, 077125, Romania
AU: Gheorghe, M
EM: marmur@infp.ro
AF: National Institute for Earth Physics, Calugareni 12, Magurele, 077125, Romania
AU: Adrian, G
EM: adrian@infp.ro
AF: National Institute for Earth Physics, Calugareni 12, Magurele, 077125, Romania
AB: A prototype early warning system was developed in Romania in order to provide 25-35 seconds warning time for Bucharest facilities for earthquake with M >6.5. The prototype system consists of four components: network ground motion sensors in the epicentral area, an area centre in epicentre, a digital radio communication link and a central data centre. These components are fully functional at Romania seismic data centre (RO_NDC) in Bucharest since August 2003. The system is in testing phase for one important user from Bucharest the Van de Graff Accelerator were we provide about 25 seconds warning time before shaking occurs. Because the prototype system demonstrated that potentially useful warnings of strong shaking from Vrancea earthquakes are feasible, the National Institute for Earth Physics decide to implement this system for other four important facilities from Romania. At every user was installed a dedicate device which is able to stop trigger the specific safety rules for each facility. The system was tested only with offline earthquakes due to the fact that since August 2003 there was no strong earthquake such that the real time detection algorithm to issue an alarm. The detection algorithm is based on a combination of spectral and amplitude analysis for the first 4 seconds of the P wave.
DE: 7212 Earthquake ground motions and engineering seismology
SC: Seismology [S]
MN: 2007 Fall Meeting