改进磁变仪布局的研究  

A STUDY OF IMPROVEMENT OF MAGNETIC VARIOMETER DEPLYMENT

作　　者：朱兆才[1] 董秀云 

机构地区：[1]大连地震台,大连44中学

出　　处：《华北地震科学》1995年第4期62-69,共8页North China Earthquake Sciences

摘　　要：本文讨论了各分量磁变仪磁针之间的相互影响以及地磁场各分量的变化、记录光入射角对记录的影响，并由此认为一套磁变仪的布局应满足三项标准：（１）各分量仪磁针间的相互静磁影响要小，且任一磁针受其它磁针工作的影响要低于该分量仪记录的分辨率；（２）各分量仪的状态函数稳定，即保持走向能力强；（３）可产生较高精度的线性记录磁照图。鉴于目前的磁变仪布局与此三标准有明显差距，故本文提出了一种新的布局方案，可满足此三项标准。This paper has discussed the mutual influcene of magnetic needles of magnetic variometers of various components, the variations of various components of geomagnetic field, and the effect of the incident angle of recording light on recordings. From this,it is considered that the deployment of a set of magnetic variometers should satisfy the following three criteria: (1) the mutual magnetostatic effect of magnetic needles of magnetic variometers of various components is small, and the effect of a working magnetic needle on any other magnetic needle is lower than the recording resolution of the magnetic variometer at this component; (2) the state function of magnetic variometers of various components is stable, their directional ability is strong; (3)the linear recording magnetic photographic graphs with relatively high precision can be produced. In view of that the present deployment of magnetic variometers falls short of these three criteria, this paper has presents a new deployment plan, which can satisfy the three criteria.

关 键 词：地磁仪 磁场 磁化强度 磁照图 改进 

分 类 号：P318.61[天文地球—固体地球物理学]