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2017 Vol.27, Issue 4 Preview Page

Research Article

1D Wavelet Filtering for Groundroll Suppression in Land Seismic-Reflection Data
Jin-Hyeon Sa1
,
Jae-Eun Lee1
,
Sung-Soo Kim2
,
Ji-Soo Kim1*
1Department of Earth and Environmental Sciences, Chungbuk National University
2School of Electrical Engineering, Chungbuk National University
* 교신저자* Corresponding Author
December 2017. pp. 513-518
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Abstract

Groundroll is a coherent noise showing dispersive behavior in land seismic-reflection records and its rejection has been a stubborn problem in data processing because they severely degrade the continuities and resolution of reflection signals. Conventional processing schemes of attenuating noises are the kind of frequency filtering (i.e., bandpass and f-k) that uses the Fourier transform (FT) along the entire trace in the time domain. To suppress them in this study, 1D wavelet filtering (WT) that can control time-varying frequency properties is tested and performed in the land-based synthetic and field seismic data. The results are compared to the ones from conventional filtering techniques in terms of continuities and resolution of reflection events. This filtering technique enhanced the reflection events by effectively eliminating the dispersive groundroll and random noises with control of time-scale function on wavelet domain.

Keywords
groundroll suppression
land seismic data
dispersion
wavelet transform
wavelet filtering
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Information
  • Publisher :Korean Society of Engineering Geology
  • Publisher(Ko) :대한지질공학회
  • Journal Title :The Journal of Engineering Geology
  • Journal Title(Ko) :지질공학
  • Volume : 27
  • No :4
  • Pages :513-518
  • Received Date : 2017-12-18
  • Revised Date : 2017-12-19
  • Accepted Date : 2017-12-24
  • DOI :https://doi.org/10.9720/kseg.2017.4.513
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