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Acta Geophysica

, Volume 57, Issue 3, pp 616–635 | Cite as

Signal reconstruction of surface waves on SASW measurement using Gaussian Derivative wavelet transform

  • Sri Atmaja P. RosyidiEmail author
  • Mohd Raihan Taha
  • Zamri Chik
  • Amiruddin Ismail
Research Article

Abstract

Surface wave method consists of measurement and processing of the dispersive Rayleigh waves recorded from two or more vertical transducers. The dispersive phase data are inverted and the shear wave velocity versus depth is obtained. However, in case of residual soil, the reliable phase spectrum curve is difficult to be produced. Noises from nature and other human-made sources disturb the generated surface wave data. In this paper, a continuous wavelet transform based on mother wavelet of Gaussian Derivative was used to analyze seismic waves in different frequency and time. Time-frequency wavelet spectrum was employed to localize the interested seismic response spectrum of generated surface waves. It can also distinguish the fundamental mode of the surface wave from the higher modes of reflected body waves. The results presented in this paper showed that the wavelet analysis is able to determine reliable surface wave spectrum of sandy clayey residual soil.

Key words

signal reconstruction continuous wavelet transform (CWT) surface waves Gaussian Derivative wavelets 

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Copyright information

© © Versita Warsaw and Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Sri Atmaja P. Rosyidi
    • 1
    Email author
  • Mohd Raihan Taha
    • 2
  • Zamri Chik
    • 2
  • Amiruddin Ismail
    • 2
  1. 1.Department of Civil EngineeringMuhammadiyah University of YogyakartaYogyakartaIndonesia
  2. 2.Department of Civil and Structural EngineeringUniversiti Kebangsaan MalaysiaBangiMalaysia

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