Comparisons between non-interferometric and interferometric passive surface wave imaging methods—towards linear receiver array

SUMMARY Passive seismic methods in highly populated urban areas have gained much attention from the geophysics and civil engineering communities. Linear arrays are usually deployed for passive surface wave investigations because of their high convenience, imaging commonly used linear can be grouped as non-interferometric (e.g. multichannel analysis wave, refraction microtremor) interferometric waves spatial autocorrelation). It is well known that interferometry method able to retrieve Green’s function between inter-station pairs based on data how work. Although also popular effective near-surface imaging, particularly geotechnical industry, there no theoretical proof clarify accuracy and/or bias these methods. In this study, we use numerical derivations simulations demonstrate underlying physics both methods, under two common noise source environments including a homogeneous distribution dominant in-line distribution. We prove strength accurate dispersion over provide way estimate biases measurements. Finally, present comprehensive comparisons different with three typical field examples considering various observation systems.