Abstract
Seismic site characterization is an extremely crucial task in geotechnical earthquake engineering. For that, it is very important to estimate the shear wave velocity profile of the soil. Although several methods are available for that, the most popular method currently is the multi-channel analysis of surface waves (MASW) method. Its results are useful in many applications such as seismic microzonation and site response analysis. However, there are several uncertainties in the measurement and interpretation of this test. In this paper, an attempt has been made to find out how much these uncertainties can be reduced when prior information is available before the MASW test. The a-priori information is taken in the form of soil layering and their thicknesses in this paper. The results indicate that the availability of a-priori information certainly helps in restraining the final shear wave velocity profile of the soil. In this way, the uncertainties in the MASW test results can be reduced to a great extent when prior information about the soil profile is available.
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