Application of wavelet transform to spectral analysis of surface wave method

Sheng-Huoo Ni, Y. H. Huang, Y. Z. Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The spectral analysis of surface waves (SASW) test is a seismic method for determining the shear wave velocity (Vs) profile of a site. Three components need to perform the SASW test: field test for data collection, evaluation of experimental dispersive curve by phase unwrapping method, and determining the Vs profile of a site by inversion process. Previous studies have shown that errors may arise in experimental dispersive curve when conventional SASW test and data analysis procedures are followed. In this study, the wavelet transform is introduced to evaluate the experimental dispersive curve without using phase unwrapping method. The wavelet-based SASW method was performed at four sites, and the Vs profiles determined by the proposed method are compared with the results of PS logging tests. The determined Vs profile by the proposed method is close to the results of PS logging test for the depth less than 25 m.

Original languageEnglish
Title of host publicationThe Proceedings of the 19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
Pages860-865
Number of pages6
Publication statusPublished - 2009
Event19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE - Osaka, Japan
Duration: 2009 Jun 212009 Jun 26

Other

Other19th (2009) International OFFSHORE AND POLAR ENGINEERING CONFERENCE
CountryJapan
CityOsaka
Period09-06-2109-06-26

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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