A global mantle conductivity model derived from 8 years of Swarm satellite magnetic data

作     者：HongBo Yao ZhengYong Ren KeJia Pan JingTian Tang KeKe Zhang HongBo Yao;ZhengYong Ren;KeJia Pan;JingTian Tang;KeKe Zhang

作者机构：Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment MonitoringMinistry of Education(Central South University)Changsha 410083China Hunan Key Laboratory of Nonferrous Resources and Geological Hazards ExplorationCentral South UniversityChangsha 410083China School of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China School of Mathematics and StatisticsCentral South UniversityChangsha 410083China State Key Laboratory of Lunar and Planetary SciencesMacao University of Science and TechnologyTaipaMacaoChina 

出 版 物：《Earth and Planetary Physics》 (地球与行星物理（英文版）)

年 卷 期：2023年第7卷第1期

页      面：49-56页

核心收录：

学科分类：08[工学] 081601[工学-大地测量学与测量工程] 0816[工学-测绘科学与技术] 

基　　金：financially supported by the National Natural Science Foundation of China(41922027,41830107,42142034,41874086) Innovation-Driven Project of Central South University(2020CX012) Macao Foundation Macao Science and Technology Development Fund(0001/2019/A1) the Pre-research Project on Civil Aerospace Technologies funded by China National Space Administration(D020303) the Hunan Provincial Innovation Foundation for Postgraduate(CX20210277) the Fundamental Research Funds for the Central Universities of Central South University(2021zzts0259) 

主　　题：Macao Science Satellite-1 satellite magnetic data mantle conductivity global electromagnetic induction 

摘      要：Mantle conductivity imaging is one of the scientific goals of the forthcoming Macao Science Satellite-1(MSS-1).To achieve this goal,we develop a data analysis and inversion scheme for satellite magnetic data to probe global one-dimensional(1D)mantle conductivity *** this scheme,we present a new global mantle conductivity model by analyzing over 8 years of Swarm satellite magnetic ***,after sophisticated data selection procedures and the removal of core and crustal fields,the inducing and induced spherical harmonic coefficients of magnetic potential due to the magnetospheric ring current are ***,satellite Cresponses are estimated from the time series of these ***,the observed responses are inverted for both smooth and threejump conductivity models using a quasi-Newton *** obtained conductivity models are in general agreement with previous global mantle conductivity models.A comparison of our conductivity model with the laboratory conductivity model suggests the mean state of the upper mantle and transition zone is relatively *** scheme can be used to process the forthcoming Macao Science Satellite-1 magnetic data.