IGRF13和WMM2020模型在亚洲中低纬度地区的精度评估及分析  

Accuracy Evaluation and Analysis of IGRF13 and WMM2020 Models in Middle and Low Latitudes of Asia

作　　者：刘长青 赵东明[1] 谢心和 付林威 付林 LIU Changqing;ZHAO Dongming;XIE Xinhe;FU Linwei;FU Lin(School of Geospatial Information,University of Information Engineering,Zhengzhou 450000,China)

机构地区：[1]信息工程大学地理空间信息学院,河南郑州450000

出　　处：《测绘与空间地理信息》2024年第2期62-66,共5页Geomatics & Spatial Information Technology

基　　金：国家自然科学基金项目(42174008)资助。

摘　　要：研究了最新的世界地磁场模型WMM2020和国际地磁参考模型IGRF13与亚洲中低纬度区域地磁台站年均值的一致性,计算该区域地磁台站与其对应的地磁场模型各个地磁要素之间的均方根误差,分析WMM2020与IGRF13两者之间的差异,以此来评估最新的世界地磁场模型WMM2020和国际地磁参考模型IGRF13在亚洲中低纬度地区的适用性。分析结果表明,IGRF13模型与亚洲中低纬度地区大部分地磁台站各地磁要素的年均值符合较好,存在显著的相关性,因此,在亚洲中低纬度地区,将最新的世界地磁场模型WMM2020和国际地磁参考模型IGRF13作为构建地磁异常模型时的参考背景场,或是对主磁场进行相关的改正都具有一定适用性。This paper studies the consistency between the latest world geomagnetic field model WMM2020 and the international geo-magnetic reference model IGRF13 and the annual mean value of geomagnetic stations in the middle and low latitudes of Asia,calcu-lates the root mean square error between the geomagnetic stations in this region and their corresponding geomagnetic elements of the ge-omagnetic field model,and analyzes the difference between WMM2020 and IGRF13 to evaluate the applicability of the latest world ge-omagnetic field model WMM2020 and international geomagnetic reference model IGRF13 in the middle and low latitudes of Asia.The analysis results show that the IGRF13 model is in good agreement with the annual average values of magnetic elements at most geomag-netic stations in the middle and low latitudes of Asia,and there is a significant correlation.Therefore,it is applicable to take the latest world geomagnetic field model WMM2020 and the international geomagnetic reference model IGRF13 as the reference background field in the construction of geomagnetic anomaly models or to correct the main magnetic field in the middle and low latitudes of Asia.

关 键 词：地磁场模型 IGRF13 WMM2020 地磁台站 均方根误差 

分 类 号：P208[天文地球—地图制图学与地理信息工程]