It has been recognized that urban areas located rather distantly from earthquake sources may, under some special circumstances, be affected by the earthquake tremors. A well known example is the 1985 Michoacán earthquake, in which a large earthquake (Ms = 8.1) along the coast of México caused destruction and loss of life in Mexico City, 350 km away from the epicenter. Much of the destruction was due to significant amplification of the earthquake ground motions by thick sedimentary deposits in the down-town area of the city (Seed et al., 1987). This might be a peculiar case,...

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