000010444 001__ 10444
000010444 005__ 20141205155728.0
000010444 04107 $$aeng
000010444 046__ $$k2008-10-12
000010444 100__ $$aKanda, Katsuhisa
000010444 24500 $$aDevelopment of Site-Specific Earthquake Early Warning System for Hazard Mitigation

000010444 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010444 260__ $$b
000010444 506__ $$arestricted
000010444 520__ $$2eng$$aWe have developed a real-time hazard mitigation system using earthquake early warning to achieve (1) enhanced accuracy of seismic intensity estimation and (2) extension of interval from issuance of warning to arrival of strong tremors. Firstly, we have succeeded in reducing the error in seismic intensity estimation compared to that of the commonly used method based on an attenuation relationship and soil amplification factor by considering differences of source locations and propagation passes based on a site-specific empirical method. Secondly, the developed system utilizes a high-speed and reliable communication network for receiving information from JMA and quickly transmitting warning signals to users. In areas close to the epicenters of earthquakes, however, the warning may not be transmitted before strong tremors hit. We have therefore developed an on-site warning system using P-wave-pick-up sensors that can detect the arrival of P-waves at a site and predict the seismic intensity of ensuing ground motion to reduce the time until warning. We validated the prototype system based on vibration tests, numerical simulations and observations. Finally, we installed a practical system at a construction site in the aftershock source area of the 2008 Iwate-Miyagi inland earthquake and confirmed its applicability and accuracy.

000010444 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010444 653__ $$aEarly Warning, On-site Warning, P-wave-pick-up Sensor, Seismic Intensity

000010444 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010444 720__ $$aKanda, Katsuhisa$$iNasu, Tadashi$$iMiyamura, Masamitsu$$iKoide, Eiji
000010444 8560_ $$ffischerc@itam.cas.cz
000010444 8564_ $$s1424250$$uhttps://invenio.itam.cas.cz/record/10444/files/S05-03-006.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S05-03-006.
000010444 962__ $$r9324
000010444 980__ $$aPAPER