EARTHQUAKE INSTRUMENTAL INTENSITY
Abstract
Instrumental intensity is calculated from the largest amplitudes recorded at seismic stations. As data transmission between seismic stations and the processing centre is conducted in real time, information on earthquake effects is obtained almost immediately after the event. However, such assessment requires a dense network of seismic instruments and a mathematical relation linking the macroseismic earthquake intensity with data on seismic ground motion. Such systems are already in operation in urban areas with a dense network of instruments, such as some parts of the U.S.A. and Japan.
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