摘要
针对强剩磁条件下磁化方向估计中存在的问题,提出在剩磁影响下磁性体磁化方向相关估计方法。首先,对磁倾角和磁偏角选取确定的参数范围,并以等间隔的步长进行递变,获得一系列的磁化方向数值;然后,根据不同的磁化方向对铁磁物质的实测磁总场异常数值进行化极处理;最后,求解磁总场化极数据与实测归一化磁源强度数据的互相关系数,取互相关最大值对应的磁化方向作为最终结果。仿真和实验结果表明,本方法能有效估计出近等轴状磁性体的总磁化方向。
We propose the correlation method for estimating the magnetization direction of magnetic bodies un- der the influence of remanent magnetization. First, we determine the parameter range of magnetic inclination and declination, obtaining a serious of values of the magnetization direction at equal intervals. Then, the measured magnetic total field anomalies are transformed into the reduced-to-the-pole data according to the dif- ferent magnetization directions. Finally, the cross-correlation between the reduced-to-the-pole data and the normalized source strength data is solved. The theoretical magnetic total maximum correlation coefficient is regarded as the estimated total magnetization direction. Simulation and experimental results show that： this method can effectively estimate the magnetization direction of the magnetic bodies, especially when the mag- netic total field anomalies are approximate equiaxial.
出处
《大地测量与地球动力学》
CSCD
北大核心
2017年第7期756-760,共5页
Journal of Geodesy and Geodynamics
关键词
剩磁
磁化方向
化极
归一化磁源强度
互相关
emanent magnetization
magnetization direction
reduced-to-the-pole
normalized source strength
cross- correlation
