祁连山北缘断裂滑动参数的GPS数据蚁群算法反演研究

介绍了新近为求解复杂组合优化问题提出的蚁群算法,分析和讨论了蚁群算法在反演参数的搜索空间离散化,将参数反演问题转换成一个组合优化问题等过程;再针对断层参数的特点,改进蚁群算法并结合多断裂位错模型,利用河西地区1999～2001年和2001～2004年期间观测的GPS数据对祁连山北缘断层的三维滑动速率进行了反演计算分析....

Inversion Research on GPS Data Ant Colony Algorithm of Slip Parameters in Northern Margin Fault of the Qilian Mountains

The principle and the main characteristics of ant colony algorithm（ACA）,a new simulating evolutionary algorithm proposed recently for solving complicated combinational optimization problems are introduced in this paper.The ant colony algorithm in the search space discretization and the process of transforming inversion parameter problems into combined optimization problems are analyzed and discussed.And then ACA is modified by replacing tour length and visibility in ACA with the characteristics of fault parameters,and combined multi-fault dislocation of the theoretical model,using the Hexi area during the 1999-2001 and 2001-2004 observation of the GPS data in the northern margin of the Qilian Mountains fault slip rate for the three-dimensional inversion analysis.The results show that the ant colony algorithm can be effective in solving three-dimensional fault slip rate inversion parameters of the problem,the rate of fault activity with the results of the numerical inversion is consistent with geological methods.