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磁梯度测量是随着磁法勘探技术的不断进步而发展起来的一种新技术。它具有不受日变和正常场因素的影响,能够全面利用磁场信息的优点。本文使用GSM-19磁力仪和Grad601-2垂直磁梯度仪观测球体模型和有限长水平圆柱体模型产生的总磁异常场和垂直磁梯度场,对它们的平面分布进行了对比分析,深入探讨地面垂直磁梯度测量的应用效果。最后,盘龙城府河工区疑似古墓葬的总场和梯度场测量结果对比分析说明,垂直磁梯度场能够突出弱磁异常信息。
Magnetic gradient measurement is a new technology developed with the continuous improvement of magnetic exploration technology. It has the advantage of being able to fully utilize the magnetic field information without being affected by the factors of daily change and normal field. In this paper, we use GSM-19 magnetometer and Grad601-2 vertical magnetic gradiometer to observe the total magnetic anomaly field and vertical magnetic gradient field produced by the spherical model and finite-length horizontal cylinder model, and compare their planar distribution, Application Effect of Vertical Magnetic Gradient Measurement. Finally, the comparative analysis of the total field and gradient field measurements of the suspected ancient tombs in the Panlongcheng Fuhe area shows that the vertical magnetic gradient field can highlight the information of the weak magnetic anomaly.