Case study demonstrates effectiveness of Ambient Vibration Array in characterizing S-wave velocities, indicating its utility in geophysical assessments.
Key Points
This case study aims to evaluate the effectiveness of the Ambient Vibration Array (AVA) method for characterizing 1D S-wave velocity profiles.
Simultaneous acquisition of ambient seismic noise on three circular arrays with diameters of 30, 90, and 270 m using 31 three-component nodes.
Processing of circular arrays individually to obtain dispersion curves across a wide frequency range.
Joint reconstruction and inversion of dispersion curves for fundamental and first upper modes of Rayleigh and Love waves.
The resulting 1D model characterizes S-wave velocities down to a depth of 150 m.
Effective dispersion curves were constructed for fundamental and upper modes, aiding in accurate velocity profiling.