中文摘要：

利用河西地区2001--2004年的GPS数据和水准数据及2003--2004年的重力数据，结合带惯性权重的粒子群算法与位错理论模型，给出3种数据的附有相对权比的联合反演断层滑动速率的模型。对该地区的主要断层三维滑动速率进行的联合反演计算结果表明：河西地区的主要断层均以逆冲为主，具有挤压趋势，其中阿尔金断裂、祁连山断裂、皇城-塔尔庄断裂以及龙首山断裂北部活动较强烈，且这些活动断层与地震孕育和发生可能相关。

英文摘要：

By using the particle swarm optimization algorithm combined with the dislocation model, the model for jointly inversing three-dimensional slip velocity of fault has been constructed. The three-dimensional slip velocity of the main faults in Hexi area was inversed from GPS data in 2001 -2004, leveling data in 2001 -2004 and gravity data in 2003 -2004. The results show that the main faults in Hexi are thrust faults, and all of then have compressional trend. The activities of Altyn Tagh fault, Qilian Mountain fault, Huangcheng-Ta＇ erzhuang fault and the north part of Longshou Mountain are strong. There the occurrence of earthquake may be related with those fault.