雅安地震产生原因

　　地震因其突发性和破坏性，成为人类历史上的主要自然灾害之一。地震按照产生原因来分，有构造地震、陷落地震、火山地震等;从序列特征来分，有孤立型地震、主震—余震型地震、双震型地震和震群型地震。按照划分，芦山地震属于主震-余震型构造地震，从目前的数据来看，此次地震的烈度低于5年前的汶川地震，灾情也更小。

　　The earthquake because of its sudden and destructive, become one of the major natural disasters in human history. The earthquake according to the cause, a tectonic earthquake, collapse earthquake, volcano earthquake; from the sequence feature points, there are isolated type earthquake, main shock-aftershock earthquake, double earthquakes and earthquake swarm type. According to the division, Lushan earthquake is mainshock-aftershock seismic structure, from the current data, the earthquake intensity lower than 5 years before the Wenchuan earthquake, the disaster is smaller.

　　我国自古以来就是一个多地震的国家，有史料记载以来，我国60%的省份都发生过7级以上地震。地震是迄今为止尚不能准确预报和破坏性最大的自然灾害之一。此次芦山地震恰好处在汶川地震发生的龙门山断裂带上，地震因何产生、危害如何、是否与汶川地震相关等成为关注热点。

　　Our country is an earthquake since ancient times, history has been recorded, 60% of China's provinces have been more than 7 earthquake. Earthquake is one of the largest natural disasters so far still can not accurately forecast and destructive. The Lushan earthquake happened in Longmen Wenchuan mountain fault earthquake zones, earthquake happen, how does harm, and the Wenchuan earthquake, focus.