2003年5月21日,一次震级为M_w6.8的破坏性地震袭击了阿尔及利亚北部城市阿尔及尔以东40km的布迈德斯地区(图1)。主震持续了约36～40s,造成灾难性的后果,据称有2300人死亡,超过11450人受伤,约200000人无家可归。这次地震推毁及严重破坏约180000幢住宅和6000座公共建筑,评估损失达50亿美元。在阿尔及利亚,震中半径400km范围内主震时有感。北边直到西班牙东南部(包括巴利阿里群岛)、撒丁岛和法国南部地震时也有感。 On May 21, 2003, a devastating earthquake of M_w6.8 hit the Bumaides area 40 km east of Algiers, a city in the north of Algeria (Figure 1). The main shock lasted about 36-40 seconds, causing catastrophic consequences. It is said that 2,300 people were killed, more than 11,450 were injured and about 200,000 were left homeless. The earthquake destroyed and severely damaged about 180,000 residential buildings and 6,000 public buildings, assessing the loss of up to 5 billion U.S. dollars. In Algeria, there is a feeling of mainshock within a radius of 400km from the epicenter. From the north until the southeastern part of Spain (including the Balearic Islands), Sardinia and the southern French earthquake.