by David J. Wald, V. Quitoriano, T.H. Heaton, H. Kanamori and C.W. Scrivner
Wald, David J., V. Quitoriano, T.H. Heaton, H. Kanamori and C.W. Scrivner (1998). TriNet "ShakeMaps": Rapid Generation of Peak Ground Motion and Intensity Maps for Earthquakes in Southern California. SMIP98
Seminar on Utilization of Strong-Motion Data, p. 155 - 175.
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Rapid (3-5 minutes) generation of maps of ground motion shaking and intensity is accomplished with advances in
real-time seismographic data acquisition combined with newly-developed relationships between recorded ground motion
parameters and expected shaking intensity values. Estimation of shaking over the entire regional extent of southern
California is accomplished by spatial interpolation of the measured ground motions with geologically-based, frequency
and amplitude-dependent site corrections. Production of the maps is automatic, triggered by any significant earthquake
in southern California. Maps are now made available within several minutes of the earthquake for public and scientific
consumption via the World-Wide-Web; they will be made available with dedicated communications for emergency response
agencies and critical users.