Variation of the PGV/PGA and PGD/PGA along with the Change of Magnitudes and Epicentral Distances
Shaobo Wang · Northwestern Seismological Journal · 2010
Taking three component peak ground accelerations from 13 earthquakes recorded by 486 stations,provided by Pacific Ocean Seismic Engineering Research Center (PEER) and Consortium of Organizations for Strong Motion Observation Systems (COSMOS) as the basis of study,peak ground accelerations are classified according to the magnitudes and the epicentral distances.The relations between the PGV/PGA,PGD/PGA and magnitude,epicentral distance are obtained.The result indicates that the ratio of peak value increases along with the magnitude and epicentral distance increasing.At last,attenuation relationship between the ratio of peak value and magnitude epicentral distance is presented which could be referenced in aseismic design.