井地磁异常联合反演方法及应用研究

非线性算法在寻找全局最优解方面具有巨大优势，因而目前大量用于各种地球物理数据的联合反演中。利用一种改进型的遗传算法实现了井地磁测资料的联合反演。设计了二度板状体模型，理论模型的试验说明了方法的可行性和合理性。最后利用程潮铁矿区地面、井中的实际资料和解释结果进行了不同干扰情况下的井地磁测资料联合反演，结果表明井地联合反演有一定的抗干扰能力，其反演方法效果优于地面或井中单独数据反演。

Research on Joint Inversion Methods and its Application of Surface and Borehole Magnetic anomaly

Nonlinear algorithm has an obvious advantage in searching the global optimal solution, so it has been widely applied in various geophysical data joint inversion. In this paper, we use an improved genetic algorithm in the borehole--ground magnetic data joint inversion and design a two--dimension plate model whose ideal model tests reveal the method ＂s feasibility and rationality. In the end the method is utilized in the borehole--ground ob- served data in Chengchao iron ore area, and the result indicates this method equips a certain anti--interference ability and is superior to individual ground or borehole data inversion.