地震学报Issue(1)：130-137,8.DOI:10.11939/jass.2016.01.013
仪器定向误差对地磁日变化记录准确度的影响研究
Influences of instrument orientation error on the accuracy of daily variation of geomagnetic record
摘要
Abstract
Based on the daily variation of geomagnetic data recorded by fluxgate magnetometer GM4-2 at Hongshan geomagnetic observatory,this paper propo-ses a method for eliminating instrument orientation error,namely the correction method for magnetic axis zero drift S 0 of D element.First,based on the mea-surement theory of magnetic axis zero drift S 0 ,a rotation platform without magnetism has been trial-produced to measure the S0 ,which is about 1 024.7 nT for the GM4-2.Then,we correct the error of S 0 value in reorientation.Finally, the S 0 value is applied to both theoretical daily variation and daily variation recorded by the instrument after orientation.The results show that the magne-tic axis zero drift S 0 of D element is the main factor for the orientation error. The daily variation recorded by the instrument after orientation are consistent with the theoretical daily variation,thus eliminating the daily variation distor-tion caused by the orientation error,and reflecting the geomagnetic filed varia-tion more realistically.关键词
磁通门磁力仪/GM4-2 定向/零场漂移 S0/无磁旋转平台Key words
fluxgate magnetometer GM4-2/orientation/the magnetic axis zero drift S 0/rotation platform without magnetism分类
天文与地球科学引用本文复制引用
胡秀娟,李西京,王静,李细顺,畅国平,王秀敏,宋昭,罗娜,解真..仪器定向误差对地磁日变化记录准确度的影响研究[J].地震学报,2016,(1):130-137,8.基金项目
河北省地震局三结合课题（DZ20150424093）和中国地震局行业标准（054219）共同资助． （）
