IGGCAS OpenIR  > 岩石圈演化国家重点实验室
Three-dimensional inversion of magnetic data in the simultaneous presence of significant remanent magnetization and self-demagnetization: example from Daye iron-ore deposit, Hubei province, China
Liu, Shuang1,2,3; Fedi, Maurizio2; Hu, Xiangyun1; Ou, Yang4; Baniamerian, Jamaledin2,5; Zuo, Boxin1; Liu, Yuegao6; Zhu, Rixiang3
2018-10-01
Source PublicationGEOPHYSICAL JOURNAL INTERNATIONAL
ISSN0956-540X
Volume215Issue:1Pages:614-634
AbstractNatural remanent magnetization and self-demagnetization on high-susceptibility bodies are two important factors affecting magnetic data inversion. We propose a framework for the inversion and interpretation of magnetic anomalies, in which significant remanent magnetization and self-demagnetization are present simultaneously. The framework is based on the assumptions that the external applied field and internal self-demagnetization field are uniform and the deflection of self-demagnetization in the total magnetization direction is negligible. First, the magnetization vector distributions are obtained from magnetic data by estimating the magnetization direction, then inverting for the magnetization intensity distribution, using the inferred magnetization direction as a constraint. Based on a priori information about the Koenigsberger ratio derived from petrophysical measurements, the direction and intensity of the remanent magnetization are obtained. The self-demagnetization factor is then computed using the finite volume method. Finally, the true-susceptibility distribution is achieved by correcting for the self-demagnetization effect. The method is first applied to synthetic magnetic data produced by a prism-shaped source model that has significant remanent magnetization and high susceptibility. In a case study of the Daye iron-ore deposit, Hubei province, China, the true susceptibility and remanent magnetization are reconstructed. The remanence direction information reveals that local geological activities such as synclines and faults lead to changes in the remanence directions at different local deposits.
KeywordMagnetic anomalies modelling and interpretation Rock and mineral magnetism Inverse theory
DOI10.1093/gji/ggy299
Funding OrganizationNational Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Natural Sciences Foundation of Hubei Province ; Natural Sciences Foundation of Hubei Province ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Natural Sciences Foundation of Hubei Province ; Natural Sciences Foundation of Hubei Province ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Natural Sciences Foundation of Hubei Province ; Natural Sciences Foundation of Hubei Province ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Natural Sciences Foundation of Hubei Province ; Natural Sciences Foundation of Hubei Province
WOS KeywordNORMALIZED SOURCE STRENGTH ; VECTOR INVERSION ; TOTAL MAGNITUDE ; ERROR ANALYSIS ; DIRECTION ; 3D ; ANOMALIES ; SURFACE ; 2D ; GRAVITY
Language英语
Funding ProjectNational Natural Sciences Foundation of China[41604087] ; National Natural Sciences Foundation of China[41630317] ; National Natural Sciences Foundation of China[41674110] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[CUGL170407] ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan)[CUG160609] ; China Postdoctoral Science Foundation[2016M590132] ; Natural Sciences Foundation of Hubei Province[2016CFB122]
Funding OrganizationNational Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Natural Sciences Foundation of Hubei Province ; Natural Sciences Foundation of Hubei Province ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Natural Sciences Foundation of Hubei Province ; Natural Sciences Foundation of Hubei Province ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Natural Sciences Foundation of Hubei Province ; Natural Sciences Foundation of Hubei Province ; National Natural Sciences Foundation of China ; National Natural Sciences Foundation of China ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; Fundamental Research Funds for the Central Universities, China University of Geosciences (Wuhan) ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Natural Sciences Foundation of Hubei Province ; Natural Sciences Foundation of Hubei Province
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000448242600037
PublisherOXFORD UNIV PRESS
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/89158
Collection岩石圈演化国家重点实验室
Corresponding AuthorHu, Xiangyun
Affiliation1.China Univ Geosci, Inst Geophys & Geomat, Hubei Subsurface Multiscale Imaging Key Lab, Wuhan, Hubei, Peoples R China
2.Naples Univ Federico II, Dept Earth Environm & Resources Sci, Naples, Italy
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
4.Chinese Acad Geol Sci, Inst Geophys & Geochem Explorat, Langfang, Peoples R China
5.Grad Univ Adv Technol, Coll Sci & Adv Technol, Dept Earth Sci, Mahan, Iran
6.China Geol Survey, Xian Ctr, Minist Land & Resources, Key Lab Study Focused Magmatism & Giant Ore Depos, Xian, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Liu, Shuang,Fedi, Maurizio,Hu, Xiangyun,et al. Three-dimensional inversion of magnetic data in the simultaneous presence of significant remanent magnetization and self-demagnetization: example from Daye iron-ore deposit, Hubei province, China[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2018,215(1):614-634.
APA Liu, Shuang.,Fedi, Maurizio.,Hu, Xiangyun.,Ou, Yang.,Baniamerian, Jamaledin.,...&Zhu, Rixiang.(2018).Three-dimensional inversion of magnetic data in the simultaneous presence of significant remanent magnetization and self-demagnetization: example from Daye iron-ore deposit, Hubei province, China.GEOPHYSICAL JOURNAL INTERNATIONAL,215(1),614-634.
MLA Liu, Shuang,et al."Three-dimensional inversion of magnetic data in the simultaneous presence of significant remanent magnetization and self-demagnetization: example from Daye iron-ore deposit, Hubei province, China".GEOPHYSICAL JOURNAL INTERNATIONAL 215.1(2018):614-634.
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