铁磁性物质对地磁观测干扰的实验研究
Experimental Research on the Interference of Ferromagnetic Material on Geomagnetic Observation
DOI: 10.12677/ag.2026.1610132, PDF,    科研立项经费支持
作者: 宫静芝, 张亮娥*, 吕永青, 王振江:山西省地震局太原地震监测中心站,山西 太原;太原大陆裂谷动力学国家野外科学观测研究站,山西 太原
关键词: 铁磁性物质;地磁观测;典型干扰;Ferromagnetic Material; Geomagnetic Observation; Typical Interference
摘要: 选取铁磁性干扰源在FHD传感器正南、正北、正东、正西四个方向,不同高度,不同距离多点位布局测量,确定对各分量的干扰幅度。结合太原武家寨磁电台站近年来受铁磁性物质的典型干扰实例,研究铁磁性物质对地磁观测的影响。结果表明:① 同一干扰源在同一高度,干扰源在南北方向干扰幅度基本一致,在东西方向,西面远大于东面,在四个方向干扰幅度H分量 > F分量 > Z分量,且干扰方向基本一致,随距离的增加,干扰幅度逐渐减小。② 干扰源在传感器侧面时,不同方向干扰情况不一样,高于传感器位置传感器位置时干扰幅度大于低于传感器位置的干扰。③ 铁磁性物质对地磁仪器各分量干扰幅度及形态,在不同方向、不同高度有一定的规律,可用于判定铁磁性物质的干扰方位。
Abstract: The ferromagnetic interference source was measured at multiple points in the four directions—due south, due north, due east, and due west—of the FHD sensor, at different heights and distances, to determine the interference amplitude of each component. The influence of ferromagnetic materials on geomagnetic observation is studied based on the typical examples of ferromagnetic interference in Wujiazhai magnetic station in Taiyuan in recent years. The results show that: ① With the same interference source at the same height, the interference amplitude of the interference source is basically the same in the north-south direction, in the east-west direction, the interference on the west side is much larger than that on the east side, the interference amplitudes of the H, F, and Z components follow the order H > F > Z in the four directions, and the interference direction is basically the same, and the interference amplitude decreases gradually with the increase of distance. ② When the interference source is on the side of the sensor, the interference situation in different directions is different, and when the interference source is above the sensor, the interference amplitude is greater than when it is below the sensor. ③ The interference amplitude and shape of each geomagnetic component caused by ferromagnetic materials have certain rules in different directions and different heights, and can be used to determine the interference orientation of the ferromagnetic material.
文章引用:宫静芝, 张亮娥, 吕永青, 王振江. 铁磁性物质对地磁观测干扰的实验研究[J]. 地球科学前沿, 2026, 16(10): 1503-1512. https://doi.org/10.12677/ag.2026.1610132

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