Abstract: Soil parameters have an important impact on the response to earthquake damage, H/V spectral ratio and the refraction microtremor (REMI) methods are of practical significance to determine soil thickness and velocity structure of the site. The REMI method acquires data by the conventional refraction seismic equipment, and makes use of ambient seismic field as the source. The transformation from the time-space domain to the slowness-frequency domain will be carried out in the REMI method to extract the dispersion curve by means of the tau-p transform and the Fourier transform. Different from surface wave exploration of active source, the soil structure will be achieved in the greater depth by the dispersion curves inversion.

Key words: Soil parameters, H/V spectral ratio, REMI, Dispersion curves inversion