The interfering component frequency of an interfering wave is detected from the frequency spectrum of the short-time data (SD).

The method supplies information for filtering the surface waves (ground roll).

A method is disclosed for attenuating ground roll in seismic data signals.

The method according to the invention is furthermore very useful for an automatic process of ground roll detection.

A difference filter is created that incorporates an estimate of ground roll differential move-out between the seismic sensors.

Consequently, ultrasonic wave propagating to the side face (3) is attenuated and generation of parasitic wave due to reflection of the ultrasonic wave is suppressed.

The present invention relates to a method to detect areas of acquired seismic data that contain ground roll.

Provided is a surface acoustic wave resonator having improved surface acoustic wave leakage in the horizontal direction, a small spurious wave and excellent characteristics.

In the high frequency package, a leading end opened line (50) having a length of substantially 1/4 of the wavelength of a spurious wave is arranged on an inner conductor pad (5).