由于重力区域场的普遍存在,局部异常的准确获取及其定量反演,一直是很困难的问题.求取重力一次垂向导数,可以在很大程度上消除区域场的影响.由于垂向一次导数异常等价于垂直磁化的垂直磁场强度异常,这样就提供了一个新的重力异常推断解释途径.实践 Due to the prevalence of the gravitational field field, the accurate acquisition of local anomalies and their quantitative inversion have been difficult problems. Taking a vertical derivative of gravity can largely eliminate the influence of the regional field. The derivative anomaly is equivalent to the abnormal vertical magnetic field strength of perpendicular magnetization, thus providing a new way of explaining the anomalous gravity anomalies.