基于地磁坐标的多地磁台站日变改正方法  

Diurnal variation correction method for multiple geomagnetic stations based on geomagnetic coordinates

作　　者：高姗 王文博 崔志伟 张琦洁 闫红雨 高维 GAO Shan;WANG Wen-Bo;CUI Zhi-Wei;ZHANG Qi-Jie;YAN Hong-Yu;GAO Wei(China Aero Geophysical Survey and Remote Sensing Center for Natural Resources,Beijing 100083,China;61365 Troops,Tianjin 300100,China;School of Earth and Space Sciences,Peking University,Beijing 100091,China;32011 Troops,Beijing 100094,China)

机构地区：[1]中国自然资源航空物探遥感中心,北京100083 [2]61365部队,天津300100 [3]北京大学地球与空间科学学院,北京100091 [4]32011部队,北京100094

出　　处：《物探与化探》2022年第6期1518-1522,共5页Geophysical and Geochemical Exploration

基　　金：海丝路工程“××××重点海域航空重磁精密测量”(DD20191001);自然资源部航空地球物理遥感地质重点实验室课题(20202YEL10)。

摘　　要：传统多地磁台站日变改正都基于地理坐标,通过改进计算方法的方式来提高日变改正精度,本文通过比较分析传统日变改正的方法,并根据地磁坐标与地磁场强度具有更强相关性的特征,提出基于地磁坐标进行拟合的日变改正方法——地磁坐标拟合法。实验结果表明,基于地磁坐标的多站日变改正方法普遍提高了日变改正的精度,为多站日变改正提供了新的研究思路。The conventional diurnal variation correction of multiple geomagnetic stations based on geographic coordinates is to increase the precision of diurnal variation correction by improving the calculation methods.Based on the comparative analysis of conventional diurnal variation correction methods,this study proposed the geomagnetic coordinate fitting method for diurnal variation correction based on the high correlation between geomagnetic coordinates and geomagnetic field strength.The experimental results show that the diurnal variation correction of multiple geomagnetic stations based on geomagnetic coordinates generally improves the precision of diurnal variation correction and,thus,serves as a new study approach for diurnal variation correction of multiple geomagnetic stations.

关 键 词：多站日变改正 地磁坐标拟合法 日变改正精度 

分 类 号：P631[天文地球—地质矿产勘探]