In the ReMi (refraction microtremor) method, the phase velocities are determined at the frequencies where a slope or a peak occurs in the spectral ratio map. Once, a dispersion curve is obtained as a velocity values versus periods, then S-wave velocities of the subsurface can be derived by using some inversion methods. We use the damped least-squares method with the singular value decomposition for the matrix manipulations. An appropriate weighting scheme is suggested for the ReMi data for describing data uncertainties. First, the measured data are smoothed by a combination of simple fitting functions that simulates the behaviour of a dispersion curve. Then the weight coefficients are derived from the differences between the measured and the smoothed data sets in order to make the interpretation algorithm stable.


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error