用三维解析信号技术处理华南航磁异常

THE APPLICATION OF 3-D ANALYTICAL SIGNAL TECHNIQUE TO THE TREATMENT OF AEROMAGNETIC ANOMALIES IN SOUTH CHINA

处于低纬度的华南发育了大量的花岗岩和火山岩 ,其磁场特征不同于其他地区。本文用三维解析信号技术对华南航磁异常进行了处理 ,以探索在不同地质背景地区的解析信号技术的应用效果。根据解析信号的强弱 ,对华南磁场进行了分区 ,并结合地震和华南花岗岩同位素地球化学的研究成果探讨了磁场分区的深部地质背景。

In South China which lies in low latitudes,there are large quantities of granites and volcanic rocks,whose magnetic fields are different from those in other areas.This paper applied 3?D analytical signal technique to the treatment of aeromagnetic anomalies in South China so as to probe into the application effects of analytical signal technique in areas with different geological settings.It divided the South China magnetic fields on the basis of intensities of analytical signals and,in combination with the achievements in seismic and isotopic geochemical studies of South China granites,investigated the deep geological backgrounds for the division of magnetic fields.