“…Extracting dispersion curves from ambient noise is a key step in microtremor survey and ambient seismic noise tomography. A number of methods have been developed during the past few decades, such as the spatial autocorrelation method (Aki, ), the frequency wave number (FK) method (Capon, ; Lacoss et al, ), the phase velocity image analysis (Yao et al, ), the multichannel analysis of surface wave (MASW) method (e.g., Park et al, , ; Park & Miller, ), and the high‐resolution linear Radon transform (e.g., Luo et al, ; Pan et al, ). Methods for extracting the fundamental dispersion curve are considered mature.…”