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Metamorphosing the SASW method by 2D wavefield transformation / Chun-Hung Lin in Journal of geotechnical and geoenvironmental engineering, Vol. 138 N° 8 (Août 2012) 

Public ISBD [article]  in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 8 (Août 2012) . - pp. 1027–1032 Titre : Metamorphosing the SASW method by 2D wavefield transformation Type de document : texte imprimé Auteurs : Chun-Hung Lin, Auteur ; Chih-Ping Lin, Auteur Année de publication : 2012 Article en page(s) : pp. 1027–1032 Note générale : Géotechnique Langues : Anglais (eng) Mots-clés : Shear  waves  Surface  waves  SASW  MASW  Wavefield  transformation Résumé : Dispersion analysis in surface wave testing is conventionally associated with a certain method of data acquisition, such as phase angle analysis in the two-station spectral analysis of surface wave (SASW) method and two-dimensional (2D) multistation wavefield transformation in the multistation analysis of surface wave (MASW) method. A new procedure has been developed to reconstruct the SASW data as MASW-imitating data, taking advantage of the 2D multistation wavefield transformation to better analyze the SASW data. Numerical simulations and a real-world example demonstrate the feasibility of this procedure, but also reveal an unwanted side effect associated with aliasing. A common-receiver survey is proposed for future experiments to eliminate this unwanted side effect and at the same time increase the lateral resolution. ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000657 [article] Metamorphosing the SASW method by 2D wavefield transformation [texte imprimé] / Chun-Hung Lin, Auteur ; Chih-Ping Lin, Auteur . - 2012 . - pp. 1027–1032. Géotechnique Langues : Anglais (eng) in Journal of geotechnical and geoenvironmental engineering > Vol. 138 N° 8 (Août 2012) . - pp. 1027–1032 Mots-clés : Shear  waves  Surface  waves  SASW  MASW  Wavefield  transformation Résumé : Dispersion analysis in surface wave testing is conventionally associated with a certain method of data acquisition, such as phase angle analysis in the two-station spectral analysis of surface wave (SASW) method and two-dimensional (2D) multistation wavefield transformation in the multistation analysis of surface wave (MASW) method. A new procedure has been developed to reconstruct the SASW data as MASW-imitating data, taking advantage of the 2D multistation wavefield transformation to better analyze the SASW data. Numerical simulations and a real-world example demonstrate the feasibility of this procedure, but also reveal an unwanted side effect associated with aliasing. A common-receiver survey is proposed for future experiments to eliminate this unwanted side effect and at the same time increase the lateral resolution. ISSN : 1090-0241 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0000657