Using the failure criterion of maximum equivalent stress and the method of element birth and death , the space distribution features of small earthquakes ( micro cracks in rock ) before a strong earthquake are simulated 利用最高应力破裂准则、释放破裂单元刚度生与死的方法，模拟强震前岩石的破裂和小震的空间分布特征。
Such as : the xinfengjiang massive - head dam . earthquake could be felt at reservoir region after it was stored water in 1959 . and , it appeared some rifts on its head during a strong earthquake in 1962 比如：新丰江大头坝在1959年水库蓄水后不久，库区发生有感地震， 1962年3月19日发生m = 6 . 1级强震时造成大坝头部裂缝。
On may 21 , 2003 , a strong earthquake measuring 6 . 7 on the richter scale devastated the city of boumerdes 55 miles east of algiers , the capital of algeria . the severe damage caused by the initial quake was intensified by a series of aftershocks , making the situation even worse 5月21日，阿尔及利亚首都阿尔及尔以东55哩处的布米尔达斯市boumerdes ，发生了芮氏规模6 . 7级的强烈地震，后续并发生多次强烈馀震，造成相当严重的灾情。
Then a windstorm tore away the roofs of almost all the residents homes . trees were uprooted and electric power was cut off . an unprecedented snow fell and , even more unfortunately , a strong earthquake almost leveled the entire village 然而几年前，美丽的村庄接连发生了旱灾洪水，接踵而至的暴风几乎掀走所有居民住家的屋顶，树木被连根拔起电力中断，之后又降下了一场前所未有的大雪，更不幸的是，一场强烈地震几乎将所有的房屋都夷为平地。
Combined report from formosa a strong earthquake with a magnitude of 7 . 3 on the richter scale struck formosa on september 21 , 1999 at 1 : 47 am . the whole island felt the tremendous shock of the quake . people were shaken out of their sleep , and in great fright some escaped outside , still holding onto their quilts 福尔摩沙在9月21日凌晨1时47分发生芮氏规模7 . 3级的强烈地震，地震发生时整个福尔摩沙天动地摇，民众在睡梦中惊醒，许多民众吓得抱着棉被往外跑。
On january 13 , 2001 , at about two a . m . , a strong earthquake hit el salvador in latin america . the supreme master ching hai international association immediately sent relief funds to the victims through the san jose and los angeles centers in the united states , to cover the cost of food supplies and home reconstruction 2001年1月13日凌晨二点多钟，拉丁美洲萨尔瓦多经历了强烈地震，随后清海无上师世界会立即透过美国圣荷西和洛杉矶小中心，汇了一笔捐款给灾民采购粮食及重建家园用。
On may 21 , 2003 , a strong earthquake measuring 6 . 7 on the richter scale devastated the city of boumerdes , 50 km east of algiers , the capital of algeria . a total of 2 , 217 people perished , 9 , 085 were injured and more than two hundred thousand went homeless . the number of casualties continued to increase as aftershocks measuring 5 . 0 or above on the richter scale struck the affected area on may 27 , 28 and 29 5月21日，阿尔及利亚首都阿尔及尔以东50多公里处的布米尔达斯市，发生了芮氏规模6 . 7级的强烈地震，造成2217人死亡9085人受伤，二十多万人无家可归的严重灾情，并于后来的27 28 29日连续发生超过五级以上的多次馀震，使得伤亡人数持续增加中。
Ecently , a strong earthquake struck in the vicinity of los angeles , california , setting off rumors that a greater quake was yet to come . traffic accidents occurred frequently and police car sirens , fire engines , and ambulances could be heard throughout the day . in the ensuing weeks , as halloween approached , an unsettling feeling prevailed among many people concerning the coming of the new millennium 州洛杉矶刚刚经过大地震，市井间又有消息说还会有更大的地震发生，高速公路上车祸频繁，一天到晚警笛声火警及救护车笛声此起彼落，万圣节的到来更为之平添一股鬼气，空气中充满了世纪末的惶恐与不安的气氛。
A perfectly functional and applied information system for the commanding center of earthquake emergency response will be in favor of mastering the situation of earthquake and disaster in space and time when a strong earthquake occurs , thereby to relief the earthquake disaster effectively and reduce the loss furthest 摘要一个功能完善且实用的地震应急指挥中心信息系统，有利于在大震应急时在时间和空间上掌握震情和灾情，便于有效地抗震救灾，最低限度地减少损失。
Athens on september 7th at 2 : 56 p . m . local time , a strong earthquake of magnitude 5 . 9 on the richter scale occurred in the north of athens , the capital city of greece . the center of the earthquake was in the north suburban area of athens . this was the most severe earthquake to occur in athens in decades , causing injury and death to more than five hundred people , destroying many buildings and leaving thousands of people homeless 希腊首都雅典北部9月7日在当地时间下午二时五十六分左右发生芮氏规模五点九级的强烈地震，震央位于雅典北部郊区，这是雅典数十年来最严重的地震，至少造成五百多人伤亡及许多建筑被毁，导致几千人无家可归。
