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Research on RTP aeromagnetic gradient data and its applicability in different latitudes

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Abstract

Aeromagnetic gradient data needs to be reduced to the pole so that it can be better applied to geological interpretation through theoretical derivation. In this paper, we conduct research on the morphological characteristics of the total and horizontal gradient modules before and after reduction to the pole and design models at different latitudes, with consistent and inconsistent magnetic field direction and geological body magnetization direction. We discuss how to use the total gradient module and horizontal gradient module in geological interpretation. The reduced-to-the-pole (RTP) method is required for the horizontal gradient module method but not for the total gradient module. Finally, the conclusions derived from the theoretical models are verified through analysis of real data. The position determination of a geological body using the total gradient method, gradient data, or total-field data works better without RTP, ensuring data primitive authenticity. However, the horizontal gradient module should be reduced to the pole to determine the boundary of the geological body. Finally, the theoretical model is verified by actual data analysis. Both the total and horizontal gradient methods can be applied to geological interpretation.

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Authors and Affiliations

  1. College of Geo-exploration Sciences and Technology, ilin University, Chang Chun, 130026, China

    Lin Li

  2. China University of Geosciences (Beijing), Beijing, 100083, China

    Hua Guo & Ping Wang

  3. China Aero Geophysical Survey and Remote Sensing Center, Beijing, 100083, China

    Hua Guo, Ping Wang & Wei-Jie Jia

Authors
  1. Lin Li
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  2. Hua Guo
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  3. Ping Wang
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  4. Wei-Jie Jia
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Corresponding author

Correspondence to Hua Guo.

Additional information

This paper is surpported by the National 863 Program (Grant No. 2013AA063901).

Li Lin, graduated from College of GeoExploration Sicence and Technology of Jilin University in 2011 and obtained bachelor’s degree. Graduated from College of Geo Exploration Sicence and Technology of Jilin University in 2014 and obtained master’s degree. Now in the college study for a doctorate. The main research interest is the gravity and magnetic potential field data processing and interpretation.

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Li, L., Guo, H., Wang, P. et al. Research on RTP aeromagnetic gradient data and its applicability in different latitudes. Appl. Geophys. 13, 48–58 (2016). https://doi.org/10.1007/s11770-016-0534-4

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  • DOI: https://doi.org/10.1007/s11770-016-0534-4

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