Bulletin of the Geological Society of Malaysia, Volume 46, May 2003, pp. 475 - 478
School of Environment and Natural Resource Science, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor DE
Abstract: A considerable amount of research has been devoted to the subject of attenuation of motion resulting from the geometrical and material dampings on soil medium. However, there are very few studies available on the effect of attenuation of rockmass at the moment. In this study, the loss of the amplitude (A) or energy vibration due to the geometrical and material dampings of Rayleigh waves were estimated by SASW method. The results of measurements were analyzed in the frequency domain and the attenuation characteristics of rockmass were studied in term of a frequency-independent attenuation coefficient (αo), by applying Bornitz equation. The experimental curve is fitted to a corresponding theoretical curve, in order to obtain a frequency-independent attenuation coefficient (αo). The aim of this survey is to characterize the attenuation coefficient of surface waves on rockmass, as a result of discontinuity spacing using the SASW method.