COMPARISON BETWEEN RECORDED AND DERIVED SEISMIC PEAK HORIZONTAL GROUND ACCELERATION DATA IN JORDAN

The isoseismal map for the earthquake that occurred in the Jordan vall ey on 11 July 1927 was analyzed and used to develop peak ground accele ration (PGA) Attenuation relation for Jordan needed for use in relevan t seismic hazard evaluation procedures. Strong motion data of earthqua kes that occurred in Jordan and Israel during the last fifteen years w ere summarized. A comparison was made between recorded PGA's and those calculated using the derived Attenuation relation and that developed by Esteva (1974) that is commonly used by experts in the region. The c omparison showed that the derived relation is appropriate for estimati ng PGA values on alluvium foundations. The derived relation gave resul ts close to those obtained using the Esteva (1974) relation.