The corrected ground acceleration components recorded by the Ceyhan station are given in Figure 3. accelerations are integrated and resolved, peak ground velocities of 30 cm/s and 25 cm/s and peak ground displacements of 8 cm and 12 cm are obtained in the longitudinal and transverse directions to the fault respectively. The acceleration response spectra of the Ceyhan ground motion components are shown in Figure 4. This figure indicates similarity of the intensity and frequency content of ground motions in two horizontal directions. Ceyhan is located in the second most severe seismic zone in Turkey where the probability of exceeding an effective peak ground acceleration of 0.3 g is 10 percent in 50 years, or the return period is 475 years. Hence Ceyhan ground motion does not exceed the seismic hazard defined for Ceyhan in the seismic zones map of Turkey.