Method for the determination of local wave heights and acoustic sensor in marine seismic signals

摘要

A method is provided for analyzing received seismic signals which are received from a plurality of seismic sensors in response to operation of an acoustic source during a marine seismic survey. The seismic sensors are located at different offsets from the acoustic source. The method comprises the steps of selecting a time window within a particular seismic signal which frames a relatively well-defined event represented in the signal. The particular seismic signal is received from a particular seismic sensor. The method further comprises determining a receiver ghost notch frequency from an amplitude/frequency spectrum of the seismic signal in the window and deriving from the receiver ghost notch frequency an estimate of a height of a water column above the particular seismic sensor which generated said particular seismic signal.