Research on Iterative Method Used in Reduction to the Pole of Magnetic Anomalies at Low Latitude

Geoscience ›› 2012, Vol. 26 ›› Issue (6): 1175-1184.

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Research on Iterative Method Used in Reduction to the Pole of Magnetic Anomalies at Low Latitude

TAO Chang-Li^-1,2,3, LI Hong-Wei^-3,4, ZHENG Yuan-Man^-1,2,3, MENG Xiao-Gong^-1,2,3, ZHANG Yu-Wen^-1,2,3

1 Key Laboratory of Geodetection (China University of Geosciences, Beijing）, Ministry of Education, Beijing100083, China;
2 State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing100083, China；
3 School of Geophysics and Information Technology, China University of Geosciences, Beijing100083, China
4 National Marine Environmental Forecasting Center, Beijing100081, China

Received:2012-06-06 Revised:2012-08-07 Online:2012-10-24 Published:2012-10-31

Abstract

Abstract:

This paper analyses the iterative method used in the RTP at the magnetic equator, focusing on the key factor in the iteration: the choice of mapping function of the raw data to the target data. This method is extended to other low latitude regions by changing the mapping function, and the condition of convergence at different magnetic latitudes is given. Applications to synthetic and field magnetic data sets show that the improved method is effective for both the other low latitude regions and the magnetic equator, and the efficiency of the iterative calculation is improved.

Key words: magnetic anomaly, RTP by iterative method, mapping function, condition of convergence

TAO Chang-Li, LI Hong-Wei, ZHENG Yuan-Man, MENG Xiao-Gong, ZHANG Yu-Wen. Research on Iterative Method Used in Reduction to the Pole of Magnetic Anomalies at Low Latitude[J]. Geoscience, 2012, 26(6): 1175-1184.

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Research on Iterative Method Used in Reduction to the Pole of Magnetic Anomalies at Low Latitude

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