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Pure and Applied Geophysics

, Volume 175, Issue 12, pp 4427–4447 | Cite as

Inversion of Density Interfaces Using the Pseudo-Backpropagation Neural Network Method

  • Xiaohong Chen
  • Yukun DuEmail author
  • Zhan Liu
  • Wenju Zhao
  • Xiaocheng Chen
Article
  • 112 Downloads

Abstract

This paper presents a new pseudo-backpropagation (BP) neural network method that can invert multi-density interfaces at one time. The new method is based on the conventional forward modeling and inverse modeling theories in addition to conventional pseudo-BP neural network arithmetic. A 3D inversion model for gravity anomalies of multi-density interfaces using the pseudo-BP neural network method is constructed after analyzing the structure and function of the artificial neural network. The corresponding iterative inverse formula of the space field is presented at the same time. Based on trials of gravity anomalies and density noise, the influence of the two kinds of noise on the inverse result is discussed and the scale of noise requested for the stability of the arithmetic is analyzed. The effects of the initial model on the reduction of the ambiguity of the result and improvement of the precision of inversion are discussed. The correctness and validity of the method were verified by the 3D model of the three interfaces. 3D inversion was performed on the observed gravity anomaly data of the Okinawa trough using the program presented herein. The Tertiary basement and Moho depth were obtained from the inversion results, which also testify the adaptability of the method. This study has made a useful attempt for the inversion of gravity density interfaces.

Keywords

Three-dimensional gravity inversion density interfaces pseudo-BP neural network southern Okinawa trough Moho 

Notes

Acknowledgements

Financial support for this work was provided by the Fundamental Research Funds for the Central Universities (Grant no. 18CX02072A) and the National High Technology Research and Development Program of China (Grant no. 2006AA06Z204). The authors wish to express thanks to Yuguo Li for English manuscript revision.

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Xiaohong Chen
    • 1
    • 2
  • Yukun Du
    • 3
    Email author
  • Zhan Liu
    • 1
    • 2
  • Wenju Zhao
    • 4
  • Xiaocheng Chen
    • 5
  1. 1.School of GeosciencesChina University of Petroleum (East China)QingdaoChina
  2. 2.Laboratory for Marine Mineral ResourcesQingdao National Laboratory for Marine Science and TechnologyQingdaoChina
  3. 3.Research Institute of Unconventional Oil and Gas and Renewable EnergyChina University of Petroleum (East China)QingdaoChina
  4. 4.China National Petroleum CorporationZhuozhouChina
  5. 5.Marine and Environmental Geology Department, Qingdao Geo-exploration Academy of ChinaMetallurgical Geology BureauQingdaoChina

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