地面高精度磁测野外工作中仪器校正点使用的常见问题及应对方法  

Common problems and solutions in the use of instrument calibration points in high-precision ground magnetic surveys in the field

作　　者：耿涛[1,2] GENG Tao(Xi'an Center,China Geological Survey,Xi'an 710054,China;Northwest Geological Science and Technology Innovation Center,Xi'an 710054,China)

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054 [2]西北地质科技创新中心,陕西西安710054

出　　处：《物探与化探》2023年第4期1078-1082,共5页Geophysical and Geochemical Exploration

基　　金：国家重点研发计划项目“典型覆盖区航空地球物理技术示范与处理解释软件平台开发”(2017YFC0602200)第五课题“北秦岭华阳川地区隐伏铀矿空-地-井协同勘查技术示范研究”(2017YFC0602205)。

摘　　要：地面高精度磁测野外工作中,利用仪器校正点了解一个闭合观测单元内仪器性能是否正常,是保证数据采集质量的重要环节。但由于有些工作者未能了解仪器校正点的正确使用方法,造成仪器的早、晚校正测量工作没有起到对当天仪器工作状态的监控作用,影响了高精度磁测数据采集的质量。本文通过具体实例分析,提出在检查仪器的早、晚校正测量结果时,不但应关注早、晚校正测量结果之间的差值,还应检查早、晚校正测量结果与仪器校正点实际磁场值之间的差值,以保证野外高精度磁测数据采集的质量。To ensure the high quality of data acquisition in high-precision ground magnetic surveys in the field,it is an important link to ascertain the instrument performance in a period using instrument calibration points.However,some workers fail to properly use in-strument calibration points and thus fail to monitor the operation state of instruments on a day through the early and late calibration measurement of the instruments,affecting the acquisition of high-precision magnetic survey data.Based on the analysis of specific ex-amples,this study proposed that the checking of early and late calibration measurement results of instruments should consider both the differences between these results,as well as the differences between these results and the actual magnetic field values of instrument cor-rection points.The purpose is to ensure the high-quality field acquisition of high-precision magnetic survey data.

关 键 词：高精度磁测 野外工作 仪器校正点 使用问题 应对方法 数据质量 

分 类 号：P631[天文地球—地质矿产勘探]