A 100-degree lithospheric magnetic field model constructed using MSS-1,Swarm-A,and CHAMP satellite data  

作　　者：JiaXuan Zhang Yan Feng Pan Zhang YuXuan Lin XinWu Li Ya Huang 

机构地区：[1]Institute of Space Weather,School of Atmospheric Physics,Nanjing University of Information Science&Technology,Nanjing 210044,China [2]State Key Laboratory of Space Weather,Chinese Academy of Sciences,Beijing 100190,China [3]State Key Laboratory of Environment Characteristics and Effects for Near-space,Nanjing University of Information Science&Technology,Nanjing 210044,China [4]Macao Institute of Space Technology and Application,Macao University of Science and Technology,Macao 999078,China [5]Hubei Subsurface Multi-scale Imaging Key Laboratory,School of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074,China

出　　处：《Earth and Planetary Physics》2025年第3期667-676,共10页地球与行星物理(英文版)

基　　金：the support of the National Natural Science Foundation of China (Nos. 42250103, 41974073, and 41404053);the Macao Foundation and the preresearch project of Civil Aerospace Technologies (Nos. D020308 and D020303);funded by China’s National Space Administration, and the Specialized Research Fund for State Key Laboratories。

摘　　要：By combining data from the Challenging Minisatellite Payload(CHAMP),Swarm-A,and newest Macao Science Satellite-1(MSS-1) missions,we constructed a lithospheric magnetic field model up to spherical harmonic degree N = 100.To isolate the lithospheric magnetic field signals,we utilized the latest CHAOS-8(CHAMP,?rsted,and SAC-C 8) model and MGFM(Multisource Geomagnetic Field Model) to remove nonlithospheric sources,including the core field,magnetospheric field,ocean tidal field,and ocean circulation field.Subsequently,orbit-by-orbit processing was applied to both scalar and vector data,such as spherical harmonic high-pass filtering,singular spectrum analysis,and line leveling,to suppress noise and residual signals along the satellite tracks.With an orbital inclination of only 41°,MSS-1 effectively captures fine-scale lithospheric magnetic field signals in mid-to low-latitude regions.Its data exhibit a root mean square error of only 0.77 nT relative to the final model,confirming the high quality and utility of lithospheric field modeling.The resulting model exhibits excellent consistency with the MF7(Magnetic Field Model 7),maintaining a high correlation up to N = 90 and still exceeding 0.65 at N = 100.These results demonstrate the reliability and value of MSS-1 data in global lithospheric magnetic field modeling.

关 键 词：lithospheric magnetic field Macao Science Satellite-1(MSS-1) line leveling Magnetic Field Model 7(MF7) singular spectrum analysis 

分 类 号：P318[天文地球—固体地球物理学]