Abstract

The effects of the 6.2 mb(Lg) magnitude Charleston, MO earthquake of October 31, 1895 are presented and discussed with respect to seismic hazard mitigation in central United States, and the likelihood that some of the states in the region will be adopting changes in their building codes to include seismic loading. Foundations of thick localized deposits of Holocene alluvium, found in the major river valleys, may play a significant role in the character of the ground motions. The seismic response of such foundation conditions needs to be thoroughly documented, if the benefits and cost-effectiveness of the future building codes are to be maximized.

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