Hilbert-Huang transform is a new time-frequency method to process non-stationary signal,including empirical mode
decomposition (EMD) and Hilbert transform.Surface wave mainly distributes in the low frequency components,so IMF
component which merely contains surface wave was removed firstly.Then as for IMF component containing surface wave and
effective wave,we processed them with Hilbert transform.In the time-frequency (TF) pass domain,we designed TF filter to
remove surface wave.Finally,we carried out Hilbert-Huang inverse transform on the seismic record without surface wave after
suppressing low-frequency components of surface wave and other components merely containing effective wave based on
Hilbert-Huang inverse transform.The results based on actual seismic data indicate that this method can suppress surface waves
effectively with less effective signal loss.
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