Abstract
In aseismic design or seismic damage prediction, it is important to grasp the surface ground characteristics which affect dynamic behaviors of the structures during earthquakes. This paper describes an identification analysis method of the surface ground characteristics using horizontal array earthquake observation records. It is based on the assumption that each incident wave of neighboring observation points in the common basement deconvoluted by the multiple reflection theory almost agrees. The method is applied to a practical problem using actually observed earthquake records, and the validity of the results is examined through the comparison with results by the other method. Because the horizontal array observation can be carried out easily in a wide field, the analysis method proposed here should can make a contribution to improvement of the accuracy of aseismic design or seismic damage prediction. However, the surface ground structure must be roughly grasped to evaluate the incident wave in the basement.
