低磁纬度磁界面反演  

Magnetic Interface Inversion at Low Magnetic Latitudes

作　　者：雷文敏[1] 吴健生[1] 

机构地区：[1]同济大学海洋地质国家重点实验室,上海200092

出　　处：《同济大学学报（自然科学版）》2011年第4期620-624,共5页Journal of Tongji University:Natural Science

基　　金：国家"九七三"重点基础研究发展计划(2007CB4110602);国家自然科学基金(40674063);国家"八六三"高技术研究发展计划(2010AA09Z302)

摘　　要：指出了低磁纬度地区化极存在的误差,研究了磁异常数据的模拟退火反演方法,以立方体单元剖分网格充填磁场参数后模拟磁界面,同时反演磁界面,并结合模拟退火非线性算法的特点,研究易于加入约束条件的、方式灵活的建模方法,设计磁异常结构较复杂的模型.通过模型试验和实际资料处理,验证了该方法的正确性.The error of reduction to pole in the low magnetic latitude area was revealed,and a study was made of study simulated annealing inversion of magnetic data.By subdividing the grid into cube elements and filling them with magnetic field parameters,magnetic interface can be simulated and inversed.In combination with the nonlinear characteristics of simulated annealing algorithm,a study was made of the modeling method with easy and flexible way of adding constraints,and magnetic anomaly model was established with complex structure.Feasibility is proved through model test and field data processing

关 键 词：低磁纬度 斜磁化 化极 模拟退火 磁界面反演 

分 类 号：P318.4[天文地球—固体地球物理学]