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。
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.
出处
《大地测量与地球动力学》
CSCD
北大核心
2010年第5期28-31,47,共5页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(40674001)
关键词
位错模型
粒子群算法
联合反演
断层滑动速率
地震
＇dislocation model
particle swarm optimization algorithm （PSO）
joint inversion
fault slip velocity
earthquake
