Noise reduction technique applied to the multichannel analysis of surface waves

Taohidul Islam, Zamri Chik, Mohd. Marzuki Mustafa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper shows the presence of noises and technique to reduce these noises during the surface wave analysis. The frequency-dependent properties of Rayleigh-type surface waves can be used for imaging and characterizing the shallow subsurface. Interference by coherent source-generated noise inhibits the reliability of shear-wave velocities determined through inversion of the phase velocities of Rayleigh waves. Among these interferences by non-planar, non-fundamental mode Rayleigh waves (noise) are body waves, scattered and non-source-generated surface waves, and higher-mode surface waves. For the reduction of noise, the filtering technique is implemented in this paper for the multichannel analysis of surface wave method (MASW). With the de-noising technique during the MASW method, more robust and reliable outcome is achieved. The significance of this paper is to obtain pre-awareness about noises during surface wave analysis and take better outcomes with de-noising performance in near surface soil investigations.

Original languageEnglish
Pages (from-to)1306-1311
Number of pages6
JournalActa Geologica Sinica
Volume86
Issue number5
DOIs
Publication statusPublished - Oct 2012

Fingerprint

surface wave
Rayleigh wave
body wave
phase velocity
noise reduction
analysis
wave velocity
S-wave
soil surface
method

Keywords

  • filtering
  • multichannel analysis of surface wave method
  • near surface soil
  • noises

ASJC Scopus subject areas

  • Geology

Cite this

Noise reduction technique applied to the multichannel analysis of surface waves. / Islam, Taohidul; Chik, Zamri; Mustafa, Mohd. Marzuki.

In: Acta Geologica Sinica, Vol. 86, No. 5, 10.2012, p. 1306-1311.

Research output: Contribution to journalArticle

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