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自然电场法梯度测量是一种原理看似简单,但实际操作却较为困难的地球物理方法。自然电场法对物理性质差异较大的物体有着敏感的反应。自然电场曲线所包含的信息即包括了地下异常信息,同时又包括地形高程等影响信息。实践证明,对于高程变化较大的地区,自然电场曲线经过地形高程等校正之后,才能更为准确的反应地下异常信息。
Gradient measurement by natural electric field method is a geophysical method that seems simple in principle but difficult in practice. The natural electric field method has a sensitive reaction to objects with different physical properties. The information contained in the natural electric field curve includes the underground anomaly information as well as the impact information such as the terrain elevation. Practice has proved that, for areas with large elevation changes, the natural electric field curve can correct the underground anomaly more accurately after being corrected by the terrain elevation.