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对美国地震灾害的评价,大多是以美国西部,特别是加利福尼亚州和内华达州的地震活动部份所取得的认识为依据的。这些州的地震活动,局部是很强烈的。比起美国的任何其他部份,这些州曾发生过较大规模和中等规模的
Most of the assessments of the U.S. earthquake disaster are based on the understanding gained from seismic activities in the western United States, especially in California and Nevada. The seismic activity in these states is very strong locally. Compared to any other part of the United States, these states have experienced larger and medium-scale