165 Application of Macro-Micro Analysis Method to Estimate Strong Motion Distribution and Resulting Structure Response Muneo Hori (1) and Tsuyoshi Ichimura (2) (1) Earthquake Research Institute, University of Tokyo & RISTEX, Yayoi, Bunkyo, Tokyo 113-0032, Japan (e-mail: hori@eri.u-tokyo.ac.jp; phone: +81 3-5841-5740). (2) Department of Civil Engineering, Tohoku University & RISTEX, Aoba, Sendai, Miygai 980-8579, Japan (e-mail: t-ichim@msd.civil.tohoku.ac.jp; phone: +81 22-217-7420). Abstract The macro-micro analysis method, which is based on the multi-scale analysis, is to compute strong motion distribution with highest spatial and temporal resolution. The linkage of the multi-scale analysis solutions is modified, and the accuracy of the simulation is improved. The computed strong motion distribution is used to shake a computer model of an actual town, which consists of an underground structure model and building models. The model is constructed by using data which are stored in Geographical Information System, and dynamic responses are computed for all buildings subjected to the strong motion at each site. Introduction For the safety of a metropolis against a huge earthquake, it is essential to predict possible disaster in a realistic manner such that more effective countermeasures are made. Such prediction requires the high accuracy for strong motion simulation as well as the reliability of a model of the target metropolis. However, there are the following two difficulties: 1) enormous computer resources that are needed by the prediction of high spatial resolution; and 2) the limitation of available data for underground and man-made structures. Therefore, we have been developing a multi-scale numerical analysis method, called the macro-micro analysis method, for computing the earthquake simulation with high resolution (Ichimura and Hori, 2000[1]), and proposing a methodology of constructing simulation models by making use of data which are stored in Geographical Information System (GIS). In this paper, we report the current state of the macro-micro analysis method and its application to an earthquake simulation of a town. A key issue of the macro-micro analysis method is the multi-scale analysis which first computes waves with a lower spatial resolution and then calculates waves with a higher one. Thus, a rational linkage of waves with the different resolutions, which, in seismology, corresponds to the extrapolation from