A nonlinear method of removing harmonic noise in geophysical data

Y. Jeng, C. S. Chen

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A nonlinear, adaptive method to remove the harmonic noise that commonly resides in geophysical data is proposed in this study. This filtering method is based on the ensemble empirical mode decomposition algorithm in conjunction with the logarithmic transform. We present a synthetic model study to investigate the capability of signal reconstruction from the decomposed data, and compare the results with those derived from other 2-D adaptive filters. Applications to the real seismic data acquired by using an ocean bottom seismograph and to a shot gather of the ground penetrating radar demonstrate the robustness of this method. Our work proposes a concept that instead of Fourier-based approaches, the harmonic noise removal in geophysical data can be achieved effectively by using an alternative nonlinear adaptive data analysis method, which has been applied extensively in other scientific studies.

Original languageEnglish
Pages (from-to)367-379
Number of pages13
JournalNonlinear Processes in Geophysics
Volume18
Issue number3
DOIs
Publication statusPublished - 2011 Jun 30

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ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Geophysics
  • Geochemistry and Petrology

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