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作者对1605年琼州大地震震源区区域重、磁资料,依常规方法进行了一系列数据处理,包括布格重力异常的浅层沉积校正,向上延拓(9个上延高度)、滑动平均(6个方域窗口)、莫氏面反演,以及航磁△T的化极、化极向上延拓(6个上延高度),航磁△T的△X、△Y、△Z三个分量在垂向上的一阶导数、磁源重力、居里面反演等计算处理。本文系统阐述了各项计算处理的结果及其反映的重、磁场特征,指出所论区域重、磁异常等值线的展布及变化都很有规律,各项异常等值线中的主要梯级带及同形扭曲带,不同类型、不同方向的异常交接带,大体上比较吻合,可以互相对应,互为检验和补益;并且,其线性异常、异常等值线展布的梯级带或同形扭曲带,均以北东东走向有规律地分布为主,北北西—北西及北东走向者居次要地位。
The author carried out a series of data processing based on heavy and magnetic data and conventional methods in the area of source region of the Qiongzhou large earthquake in 1605, including shallow sedimentary correction of Bouguer gravity anomalies, upward extension (9 up-elevation), sliding averaging 6 square wave windows), Mohsian surface inversion, and aeromagnetic △ T of the pole, the pole up extension (6 on the height), aeromagnetic △ T △ X, △ Y, △ Z three Component in the vertical first derivative, magnetic gravity source, in-depth inversion calculation. This paper systematically expounds the results of various computational processes and the characteristics of heavy and magnetic fields reflected by them, and points out that the distribution and changes of the isometric and magnetic anomalies are very regular, and the major steps in the anomalous contours Belt and the same type of twisted belt, different types, different directions of the abnormal hand-over with the band, in general, can correspond to each other for mutual inspection and replenishment; and its linear anomaly, , Both of which are mainly distributed regularly in the north, east and east directions, and those in the north, north, west and north east tend to be the secondary status.