Earthquake magnitude estimation using the τc and Pd method for earthquake early warning systems
نویسندگان
چکیده
منابع مشابه
Determination of earthquake early warning parameters, τc and Pd, for southern California
S U M M A R Y We explore a practical approach to earthquake early warning in southern California by determining a ground-motion period parameter τc and a high-pass filtered displacement amplitude parameter Pd from the initial 3 s of the P waveforms recorded at the Southern California Seismic Network stations for earthquakes with M > 4.0. At a given site, we estimate the magnitude of an event fr...
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In this study, new empirical relationships to estimate key parameters in Earthquake Early Warning (EEW) system including magnitude, epicentral distance and Peak Ground Acceleration (PGA) are introduced based on features of the initial portion of P-wave’s amplitude envelope curve. For this purpose, 226 time series recorded by bore-hole accelerometers of Japanese KiK-net are processed for earthq...
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[1] Effective tsunami early warning for coastlines near a tsunamigenic earthquake requires notification within 5–15 minutes. We have shown recently that tsunamigenic earthquakes have an apparent rupture duration, T0, greater than about 50 s. Here we show that T0 gives more information on tsunami importance than moment magnitude, Mw, and we introduce a procedure using seismograms recorded near a...
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ژورنال
عنوان ژورنال: Earthquake Science
سال: 2013
ISSN: 1674-4519,1867-8777
DOI: 10.1007/s11589-013-0005-4