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CHEN PEI-SHAN YEN SHOU-MIN (Institute of Geophysics, Academia Sinica)  
In this paper, the authors combine the Haskell's model which is a moving fault of finite length and the Aki's so-called w2 model which is constructed by fitting an exponentially decaying function to the autocorrelation function of the dislocation velocity. Neglecting some secondary factors and terms and at the sametime considering its relation with the earthquake intensity, the authors have proposed a model for computing the distribution of earthquake intensity. Using this model and the seismic source parameters obtained by source mechanism studies, the authors computed the theoretical distributions of earthquake intensity for four typical earthquakes. Com-parison of the theoretical with the observed distributions, the agreement is close. It shows that this model not only can explain many earthquake intensity distributions in practice, some of which are hard to explain from the point of view of geological structures, but also may be used for computing the theoretical earthquake intensity distribution for a very large area.
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