Traditionally, the intensity of earthquake motion was evaluated by human senses as well as damage extents. Examples of this kind of scale are JMA scale, Mercalli intensity scale, and the MSK scale in Fig. 5.1. Since the development of earthquake monitoring instruments in more recent times, the intensity of earthquake motion started to be expressed by the maximum acceleration, the maximum velocity, the maximum displacement, a response spectrum, etc. Although the maximum acceleration is the most popular and the maximum velocity is the second, there is no single parameter that can fully take into account the nature of complicated earthquake motion.
KeywordsGround Motion Epicentral Distance Seismic Intensity Natural Period Maximum Acceleration
Unable to display preview. Download preview PDF.