Near-Source Attenuation Of Peak Ground Acceleration
Chang Hao Kai
Abstract
I compare attenuation relationship of peak ground acceleration to use different data base. One (KENNETH W. CAMPBELL,1981) used strong motion data recorded within 50 km of the rupture zone were used to study near-source attenuation characteristics of horizontal peak ground acceleration for worldwide earthquakes of magnitudes 5.0 to 7.7. This data base consisted of 229 horizontal components of peak acceleration recorded from 27 earthquakes, including the 15 October 1979, Imperial Valley earthquake. The other (Kun-Sung Liu and Yi-Ben Tsai,2005) is Strong seismic ground motion data obtained by the Taiwan Strong Motion Instrumentation Program (TSMIP) and Central Mountain Strong Motion Array (CMSMA) are used to derive new attenuation relationships for the vertical and horizontal peak ground acceleration (PGA) and peak ground velocity (PGV) for crustal earthquakes in Taiwan. More than 7900 three-component accelerograms recorded from 51 crustal earthquakes in Taiwan, with Mw magnitudes ranging from 4.0 to 7.1.Then using the different ground motion model to predict attenuation relationship of peak ground acceleration
I will compare these models use to make PGA predictions.
KENNETH W. CAMPBELL(1981) used the ground motion model
PGA = a exp (b M) [R + C(M)] ¡Vd
Kun-Sung Liu and Yi-Ben Tsai(2005) used the ground motion model
ln Y=a ln(X + h) + b X + c Mw + d ¡Ó£m
References
KENNETH W. CAMPBELL, NEAR-SOURCE ATTENUATION OF PEAK HORIZONTAL ACCELERATION. Bulletin of the Seismological Society of America, Vol. 71, No. 6, pp. 2039-2070, December 1981
(Abstract) (Full text)
Kun-Sung Liu and Yi-Ben Tsai, Attenuation Relationships of Peak Ground Acceleration and Velocity for Crustal Earthquakes in Taiwan. Bulletin of the Seismological Society of America, Vol. 95, No. 3, pp. 1045¡V1058, June 2005, doi: 10.1785/0120040162