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2010年4月14日发生在中国的MW6.9级地震惨剧和近期发生在海地、智利、墨西哥以及其他地方的毁灭性地震使很多人产生了这样的疑问:这种地震活动是否异常?科学家称,2010年并没有显示出异常高的地震活动迹象。自1900年以来,全世界每年平均发生16次7级或7级以上地震(地震学家将其定
The tragic earthquake of magnitude MW6.9 that struck China in April 14, 2010, and the recent devastating earthquakes in Haiti, Chile, Mexico and elsewhere have led many to wonder if the earthquake is abnormal or not 2010 did not show signs of unusually high seismic activity. Since 1900, an average of 16 earthquakes of magnitude 7 or higher occur every year in the world (seismologists have set it