Exploration methods are extended to their limits as the search for energy resources continues. Successful application of high-frequency seismic methods requires evaluating each element in the seismic data acquisition system and assuring that each part of the system contributes to the success of the method. This extends from seismic signal generation through data processing where good equipment performance and correct parameter selection are required.

The Vibroseis system depends upon the ability of vibrators to generate synchronous, repeatable sweeps over the frequency range of interest. Many considerations are used in building a vibrator. Typical baseplate responses show excellent drive levels at the design goal of 200 Hz. With an excellent source available, correct application is essential to assure retention of high-frequency data. Recording offsets, array lengths, and array sampling must be selected for the sweep frequencies used. Also, approximate matching of the data acquisition system response to the spectral response of the earth reduces the dynamic range requirements for recording systems and subsequent data processing. Data are included to show the successful application of high-frequency techniques to stratigraphic expl ration problems.

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