Recovery of Love wave overtone waveforms and dispersion curves from single-station seismograms using time-warping

SUMMARY Time-warping is a signal processing technique that, when applied to an isolated measurement of transient that propagates in waveguide, allows contributions from individual mode numbers be and extracted. Dispersion curves for can, turn, recovered. Isolation associated with possible because after time-warping—a special environmentally dependent non-uniform sampling—is applied, the energy corresponding each number frequency spectrum time-warped signal. Here we derive time-warping transform teleseismic Love waves, assuming Earth structure approximately known, illustrate utility using both synthetic measured seismograms.