摘要
<正>汶川地震是中国自1949年建国以来破坏性最强的地震,影响范围最广,灾害损失最严重。测定震级为MS8.0,以及震感等级为修订的麦卡利地震烈度(MMI)表XI度,该地震造成了严重的次生灾害,如滑坡、泥石流和堰塞湖等(图1.1)。1.此地震造成了巨大的生命损失。2008年8月25日估计有69 226人死亡,374 643人受伤,以及17 923人失踪。2.大量的城乡建筑遭到摧毁。包括北川、映秀在内的一些城镇和大量村庄被夷为平地。
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